Java 对话框片段：输入值时的响应
我需要帮助，了解如何在输入值然后按下OK按钮或cancel按钮时获取dialogfragment act 下面是类Java 对话框片段：输入值时的响应,java,android,android-activity,android-fragments,android-studio,Java,Android,Android Activity,Android Fragments,Android Studio,我需要帮助，了解如何在输入值然后按下OK按钮或cancel按钮时获取dialogfragment act 下面是类ActivityA.java，BasicDialogFragment.java，fragment\u basic\u dialog.xml和activity\u a.xml 这就是这个问题所需要的全部代码。提前谢谢 活动a package internal.android.com.helloworld; import android.content.Intent;
ActivityA.javaBasicDialogFragment.javafragment\u basic\u dialog.xmlactivity\u a.xml package internal.android.com.helloworld;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class ActivityA extends ActionBarActivity implements BasicDialogFragment.OnNameEnteredListener {
private Button dialogKnapp = null;
private TextView textA = null;
private TextView textA2 = null;
private EditText editA2 = null;
private Button buttonAB = null;
private Button buttonAC = null;
private Button buttonAD = null;
private Button buttonCancel = null;
private Button buttonOK = null;
private EditText dialog_fornavn = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_a);
dialogKnapp = (Button) findViewById(R.id.dialog_knapp);
buttonCancel = (Button) findViewById(R.id.buttonCancel);
buttonOK = (Button) findViewById(R.id.buttonOK);
dialog_fornavn = (EditText) findViewById(R.id.dialog_fornavn);
textA = (TextView) findViewById(R.id.textA);
textA2 = (TextView) findViewById(R.id.textA2);
editA2 = (EditText) findViewById(R.id.editA2);
buttonAB = (Button) findViewById(R.id.buttonAB);
buttonAC = (Button) findViewById(R.id.buttonAC);
buttonAD = (Button) findViewById(R.id.buttonAD);
Intent intent = getIntent();
String navn = intent.getStringExtra("navnet");
textA2.setText(navn);
buttonAB.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startAB();
}
});
buttonAC.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startAC();
}
});
buttonAD.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startAD();
}
});
dialogKnapp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startDialog();
}
});
}
private void startAB() {
String navn = editA2.getText().toString().toUpperCase();
Intent intent = new Intent(ActivityA.this, ActivityB.class);
intent.putExtra("navnet", navn);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
private void startAC() {
String navn = editA2.getText().toString().toUpperCase();
Intent intent = new Intent(ActivityA.this, ActivityC.class);
intent.putExtra("navnet", navn);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
private void startAD() {
String navn = editA2.getText().toString().toUpperCase();
Intent intent = new Intent(ActivityA.this, ActivityD.class);
intent.putExtra("navnet", navn);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
private void startDialog() {
BasicDialogFragment bdf = new BasicDialogFragment();
bdf.show(getFragmentManager(), "basic");
}
public void OnFragmentInteractionListener(String nameEntered){
visTekst();
}
private void visTekst() {
if(buttonOK.isPressed()){
textA2.setText(dialog_fornavn.getText());
Toast melding = Toast.makeText(getApplicationContext(),
dialog_fornavn.getText(), Toast.LENGTH_SHORT);
melding.show();
} else if(buttonCancel.isPressed()){
startAB();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
Toast toast = Toast.makeText(getApplicationContext(), "Activity A",
Toast.LENGTH_SHORT);
switch (item.getItemId()) {
case R.id.menu_item_1:
toast.setText("Activity A");
toast.show();
return true;
case R.id.menu_item_2:
toast.setText("Activity B");
toast.show();
startAB();
return true;
case R.id.menu_item_3:
toast.setText("Activity C");
toast.show();
startAC();
return true;
case R.id.menu_item_4:
toast.setText("Activity D");
toast.show();
startAD();
return true;
case R.id.action_settings:
toast.setText("Settings");
toast.show();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
import android.app.Activity;
import android.app.DialogFragment;
import android.net.Uri;
import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link BasicDialogFragment.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link BasicDialogFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class BasicDialogFragment extends DialogFragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnNameEnteredListener {
public void OnFragmentInteractionListener(String nameEntered);
}
private OnNameEnteredListener mListener;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment BasicDialogFragment.
*/
// TODO: Rename and change types and number of parameters
public static BasicDialogFragment newInstance(String param1, String param2) {
BasicDialogFragment fragment = new BasicDialogFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public BasicDialogFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_basic_dialog, container, false);
this.getDialog().setTitle("First Name");
return v;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.OnFragmentInteractionListener("uri");
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (OnNameEnteredListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
}
导入android.app.Activity；
导入android.app.DialogFragment；
导入android.net.Uri；
导入android.os.Bundle；
导入android.app.Fragment；
导入android.view.LayoutInflater；
导入android.view.view；
导入android.view.ViewGroup；
/**
*一个简单的{@link Fragment}子类。
*包含此片段的活动必须实现
*{@link BasicDialogFragment.OnFragmentInteractionListener}接口
*处理交互事件。
*使用{@link BasicDialogFragment#newInstance}工厂方法
*创建此片段的实例。
*/
公共类BasicDialogFragment扩展了DialogFragment{
//TODO:重命名参数参数，选择匹配的名称
//片段初始化参数，例如ARG_ITEM_NUMBER
私有静态最终字符串ARG_PARAM1=“PARAM1”；
私有静态最终字符串ARG_PARAM2=“PARAM2”；
//TODO:重命名和更改参数类型
私有字符串mParam1；
私有字符串mParam2；
/**
*此接口必须由包含以下内容的活动实现
*片段，以允许通信此片段中的交互
*该活动以及其中可能包含的其他片段
*活动。
*
*有关更多信息，请参阅Android培训课程。
*/
公共接口OnNameEnteredListener{
公共void OnFragmentInteractionListener（输入字符串名称）；
}
私有OnNameEnteredListener mListener；
/**
*使用此工厂方法创建的新实例
*使用提供的参数创建此片段。
*
*@param param1参数1。
*@param param2参数2。
*@return fragment BasicDialogFragment的新实例。
*/
//TODO:重命名和更改参数的类型和数量
公共静态BasicDialogFragment newInstance（字符串param1，字符串param2）{
BasicDialogFragment=新的BasicDialogFragment（）；
Bundle args=新Bundle（）；
args.putString（ARG_PARAM1，PARAM1）；
args.putString（ARG_PARAM2，PARAM2）；
fragment.setArguments（args）；
返回片段；
}
public BasicDialogFragment（）{
//必需的空公共构造函数
}
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
如果（getArguments（）！=null）{
mParam1=getArguments（）.getString（ARG_PARAM1）；
mParam2=getArguments（）.getString（ARG_PARAM2）；
}
}
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
//为该碎片膨胀布局
视图v=充气机。充气（R.layout.fragment\u basic\u对话框，容器，错误）；
this.getDialog（）.setTitle（“名字”）；
返回v；
}
//TODO:重命名方法、更新参数并将方法挂接到UI事件中
public void onButtonPressed（Uri）{
if（mListener！=null）{
OnFragmentInteractionListener（“uri”）；
}
}
@凌驾
公共事务主任（活动）{
超级转速计（活动）；
试一试{
mListener=（OnNameEnteredListener）活动；
}catch（ClassCastException e）{
抛出新的ClassCastException（activity.toString（）
+“必须实现OnFragmentInteractionListener”）；
}
}
@凌驾
公共无效连接（）{
super.onDetach（）；
mListener=null；
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" tools:context="no.hit.kvisli.heiverden.BasicDialogFragment"
android:layout_width="match_parent" android:layout_height="match_parent"
android:padding="10dp" android:orientation="vertical" >
<EditText
android:id="@+id/dialog_fornavn"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:textSize="24dp" android:textColor="@android:color/holo_red_dark"
android:hint="Skriv fornavn her" android:inputType="textPersonName" />
<LinearLayout
android:layout_width="match_parent" android:layout_height="wrap_content"
android:padding="10dp" android:orientation="horizontal" >
<Button
android:id="@+id/buttonCancel" android:text="Cancel"
android:layout_width="wrap_content" android:layout_height="wrap_content" />
<Button
android:id="@+id/buttonOK" android:text="OK"
android:layout_width="wrap_content" android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<LinearLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/farge_A"
tools:context=".ActivityA">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Activity A"
android:id="@+id/textA"
style="@style/Overskrift"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textA2"
style="@style/Overskrift"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editA2"
style="@style/EditTekst"
android:hint="Skriv noe her"
android:layout_marginLeft="120dp"
android:layout_marginTop="50dp"/>
<LinearLayout
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"
android:orientation="horizontal"
android:layout_marginTop="150dp"
android:layout_marginLeft="50dp"
tools:context=".ActivityA">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dialog"
android:id="@+id/dialog_knapp"
android:background="@color/dialog_knapp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go to B"
android:id="@+id/buttonAB"
android:background="@color/farge_B"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go to C"
android:id="@+id/buttonAC"
android:background="@color/farge_C"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go to D"
android:id="@+id/buttonAD"
android:background="@color/farge_D"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"/>
</LinearLayout>
</LinearLayout>
</ScrollView>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" tools:context="no.hit.kvisli.heiverden.BasicDialogFragment"
android:layout_width="match_parent" android:layout_height="match_parent"
android:padding="10dp" android:orientation="vertical" >
<EditText
android:id="@+id/dialog_fornavn"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:textSize="24dp" android:textColor="@android:color/holo_red_dark"
android:hint="Skriv fornavn her" android:inputType="textPersonName" />
<LinearLayout
android:layout_width="match_parent" android:layout_height="wrap_content"
android:padding="10dp" android:orientation="horizontal" >
<Button
android:id="@+id/buttonCancel" android:text="Cancel"
android:layout_width="wrap_content" android:layout_height="wrap_content" />
<Button
android:id="@+id/buttonOK" android:text="OK"
android:layout_width="wrap_content" android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<LinearLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/farge_A"
tools:context=".ActivityA">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Activity A"
android:id="@+id/textA"
style="@style/Overskrift"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textA2"
style="@style/Overskrift"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editA2"
style="@style/EditTekst"
android:hint="Skriv noe her"
android:layout_marginLeft="120dp"
android:layout_marginTop="50dp"/>
<LinearLayout
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"
android:orientation="horizontal"
android:layout_marginTop="150dp"
android:layout_marginLeft="50dp"
tools:context=".ActivityA">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dialog"
android:id="@+id/dialog_knapp"
android:background="@color/dialog_knapp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go to B"
android:id="@+id/buttonAB"
android:background="@color/farge_B"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go to C"
android:id="@+id/buttonAC"
android:background="@color/farge_C"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Go to D"
android:id="@+id/buttonAD"
android:background="@color/farge_D"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"/>
</LinearLayout>
</LinearLayout>
</ScrollView>
如果我读对了，并且您的
基本对话框片段public void OnNameEntered(String nameEntered){
//Do Something Here
}
活动a.javaprivate void visTekst(String nameEntered) {
if(buttonOK.isPressed()){
textA2.setText(nameEntered);
Toast melding = Toast.makeText(getApplicationContext(),
dialog_fornavn.getText(), Toast.LENGTH_SHORT);
melding.show();
} else if(buttonCancel.isPressed()){
startAB();
}
}
public void OnFragmentInteractionListener(String nameEntered){
visTekst(nameEntered);
}
BasicDialogFragment @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_basic_dialog, container, false);
this.getDialog().setTitle("First Name");
buttonCancel = (Button) findViewById(R.id.buttonCancel);
buttonOK = (Button) findViewById(R.id.buttonOK);
buttonCancel.setOnClickListner(new View.OnClickListener(View v){
onButtonPressed(/*Your custom URI*/Uri uri);
});
buttonOK .setOnClickListner(new View.OnClickListener(View v){
onButtonPressed(/*Your custom URI*/Uri uri);
});
return v;
}
对于这个问题，有两种方法，一种是直接
castActivity对话框片段活动有关详细信息，请参阅我之前的帖子。请清理并对齐问题中的代码。不知道如何在android studio中清理。请添加
BasicDialogFragmentdialog\u for navn.getText（）