Java 单击编辑文本时的时间选择器对话框
单击Java 单击编辑文本时的时间选择器对话框,java,android,timepicker,Java,Android,Timepicker,单击editext时获取timepicker。 请注意，我将代码放在一个片段中。 我所做的改变如下： 新增：Contextctx到settime.java package com.example.appointapp; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Locale; import android.app.DatePickerDialog; import android
editexttimepickerctx到settime.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
在线：
SetTime fromTime = new SetTime(chostime,this);
它告诉我：构造函数SetTime（editText，AppointFragment）
没有定义
我尝试将其更改为：
SetTime fromTime = new SetTime(chostime,getActivity());
当尝试运行应用程序时，请告诉我以下错误
12-30 18:03:55.120:E/AndroidRuntime（1376）：java.lang.NullPointerException
代码如下：
AppointFragment.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
SetTime.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
首先在AppointFragment
中重写onActivityCreated（）
，然后使用getActivity（）
创建SetTime
对象
private SetTime fromTime;
private EditText chosdate, chostime;
...
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
fromTime = new SetTime(chostime,getActivity());
}
下面是使用片段设置时间的完整代码。您也可以使用相同的方法设置日期
MainActivity.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
ChildFragment.java（用于显示编辑文本）
TimePickerFragment.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
活动\u main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frameLayout"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/time_edit_text"/>
</LinearLayout>
child_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frameLayout"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/time_edit_text"/>
</LinearLayout>
首先在AppointFragment
中重写onActivityCreated（）
，然后使用getActivity（）
创建SetTime
对象
private SetTime fromTime;
private EditText chosdate, chostime;
...
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
fromTime = new SetTime(chostime,getActivity());
}
下面是使用片段设置时间的完整代码。您也可以使用相同的方法设置日期
MainActivity.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
ChildFragment.java（用于显示编辑文本）
TimePickerFragment.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
}
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
public class MainActivity extends AppCompatActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create a new Fragment to be placed in the activity layout
ChildFragment firstFragment = new ChildFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
//firstFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.frameLayout, firstFragment).commit();
}
public class TimePickerFragment extends DialogFragment
implements TimePickerDialog.OnTimeSetListener {
public interface Callback
{
public void onTimeSelected(String time);
}
private Callback timeCallback;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
timeCallback = (Callback) getTargetFragment();
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
timeCallback.onTimeSelected(hourOfDay + ":" + minute + ":00");
}
}
活动\u main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frameLayout"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/time_edit_text"/>
</LinearLayout>
child_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frameLayout"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/time_edit_text"/>
</LinearLayout>
以下是代码：
AppointFragment.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
SetTime fromTime = new SetTime(chostime,getActivity());
}
}
SetTime.java
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
SingleFragmentAcitivity.java
public abstract class SingleFragmentActivity extends FragmentActivity {
protected abstract Fragment createFragment();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
FragmentManager fm = getSupportFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragmentContainer);
if (fragment == null) {
fragment = createFragment();
fm.beginTransaction()
.add(R.id.fragmentContainer, fragment)
.commit();
}
}
}
Appointactivity.java
package com.example.appointapp;
import android.support.v4.app.Fragment;
public class AppointActivity extends SingleFragmentActivity {
@Override
protected Fragment createFragment() {
return new AppointFragment();
}
}
Fragment_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/new_patient"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/new_patient" />
<Button
android:id="@+id/new_appoint"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/new_appoint"/>
</LinearLayout>
Fragment_.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Spinner
android:id="@+id/Patients_list"
android:layout_width="117dp"
android:layout_height="wrap_content" />
<EditText
android:id="@+id/datea_text"
android:layout_width="143dp"
android:layout_height="wrap_content"
android:hint="@string/datea_text_hint" />
<EditText
android:id="@+id/timea_text"
android:layout_width="141dp"
android:layout_height="wrap_content"
android:hint="@string/timea_text_hint" />
<Button
android:id="@+id/savea_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="@string/savea_button" />
</LinearLayout>
感谢您的帮助以下是代码：
AppointFragment.java
package com.example.appointapp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.DatePicker;
import android.widget.EditText;
public class AppointFragment extends Fragment{
private static final String TAG = "AppoinFragment";
EditText chosdate, chostime;
private Appointment mappointment;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mappointment= new Appointment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_appoint, parent, false);
chosdate = (EditText)v.findViewById(R.id.datea_text);
chostime = (EditText)v.findViewById(R.id.timea_text);
SetTime fromTime = new SetTime(chostime,this);
chosdate.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
DialogFragment datePickerFragment = new DatePickerFragment() {
@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Log.d(TAG, "onDateSet");
Calendar c = Calendar.getInstance();
c.set(year, month, day);
String myFormat = "dd/MM/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
chosdate.setText(sdf.format(c.getTime()));
chosdate.requestFocus();
}
};
datePickerFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
}
}
});
return v;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
SetTime fromTime = new SetTime(chostime,getActivity());
}
}
SetTime.java
package com.example.appointapp;
import java.util.Calendar;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.EditText;
import android.widget.TimePicker;
class SetTime implements OnFocusChangeListener, OnTimeSetListener {
private EditText editText;
private Calendar myCalendar;
Context ctx;
public SetTime(EditText editText, Context ctx){
this.editText = editText;
this.editText.setOnFocusChangeListener(this);
this.myCalendar = Calendar.getInstance();
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
int hour = myCalendar.get(Calendar.HOUR_OF_DAY);
int minute = myCalendar.get(Calendar.MINUTE);
new TimePickerDialog(ctx, this, hour, minute, true).show();
}
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
this.editText.setText( hourOfDay + ":" + minute);
}
}
SingleFragmentAcitivity.java
public abstract class SingleFragmentActivity extends FragmentActivity {
protected abstract Fragment createFragment();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
FragmentManager fm = getSupportFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragmentContainer);
if (fragment == null) {
fragment = createFragment();
fm.beginTransaction()
.add(R.id.fragmentContainer, fragment)
.commit();
}
}
}
Appointactivity.java
package com.example.appointapp;
import android.support.v4.app.Fragment;
public class AppointActivity extends SingleFragmentActivity {
@Override
protected Fragment createFragment() {
return new AppointFragment();
}
}
Fragment_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/new_patient"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/new_patient" />
<Button
android:id="@+id/new_appoint"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/new_appoint"/>
</LinearLayout>
Fragment_.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Spinner
android:id="@+id/Patients_list"
android:layout_width="117dp"
android:layout_height="wrap_content" />
<EditText
android:id="@+id/datea_text"
android:layout_width="143dp"
android:layout_height="wrap_content"
android:hint="@string/datea_text_hint" />
<EditText
android:id="@+id/timea_text"
android:layout_width="141dp"
android:layout_height="wrap_content"
android:hint="@string/timea_text_hint" />
<Button
android:id="@+id/savea_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="@string/savea_button" />
</LinearLayout>
感谢您的帮助我在片段中使用以下代码解决了问题：
chostime.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Calendar mcurrentTime = Calendar.getInstance();
int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
int minute = mcurrentTime.get(Calendar.MINUTE);
TimePickerDialog mTimePicker;
mTimePicker = new TimePickerDialog(getActivity(), new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
chostime.setText( selectedHour + ":" + selectedMinute);
}
}, hour, minute, true);//Yes 24 hour time
mTimePicker.setTitle("Select Time");
mTimePicker.show();
}
});
谢谢我在片段中使用以下代码解决了这个问题：
chostime.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Calendar mcurrentTime = Calendar.getInstance();
int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
int minute = mcurrentTime.get(Calendar.MINUTE);
TimePickerDialog mTimePicker;
mTimePicker = new TimePickerDialog(getActivity(), new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
chostime.setText( selectedHour + ":" + selectedMinute);
}
}, hour, minute, true);//Yes 24 hour time
mTimePicker.setTitle("Select Time");
mTimePicker.show();
}
});
谢谢你我这样做了，并且刚刚添加了SetTime fromTime（fromTime的类型是SetTime）。运行并单击编辑文本时，我收到：12-31 03:34:01.380:E/InputEventReceiver（1064）：异常调度输入事件。12-31 03:34:01.390:E/MessageQueue JNI（1064）：MessageQueue回调中的异常：HandlerReceiveCallback 12-31 03:34:01.470:E/MessageQueue JNI（1064）：java.lang.NullPointerException 12-31 03:34:01.470:E/MessageQueue JNI（1064）：在android.app.AlertDialog.resolveDialogTheme（AlertDialog.java:143）请帮助我了解您想要什么。单击编辑文本时，将显示时间对话框。单击确定后，对话框时间应显示在EditText
中。我说的对吗？对。。我添加了您在onCreateView之后编写的代码，在运行时以及单击editText之后，应用程序停止并发出java.lang.NullPointerException信号。如果您能帮助我，我将不胜感激。我正在为您编写。请让我知道这对您有帮助。我这样做了，只是添加了一个又一个SetTime fromTime（fromTime的类型是SetTime）。运行并单击编辑文本时，我收到：12-31 03:34:01.380:E/InputEventReceiver（1064）：异常调度输入事件。12-31 03:34:01.390:E/MessageQueue JNI（1064）：MessageQueue回调中的异常：HandlerReceiveCallback 12-31 03:34:01.470:E/MessageQueue JNI（1064）：java.lang.NullPointerException 12-31 03:34:01.470:E/MessageQueue JNI（1064）：在android.app.AlertDialog.resolveDialogTheme（AlertDialog.java:143）请帮助我了解您想要什么。单击编辑文本时，将显示时间对话框。单击确定后，对话框时间应显示在EditText
中。我说的对吗？对。。我添加了您在onCreateView之后编写的代码，在运行时以及单击editText之后，应用程序停止并发出java.lang.NullPointerException信号。如果你能帮助我，我将不胜感激。我正在为你写这封信。让我知道这对你有帮助。