Android 如何在alertDialogs中设置文本和获取文本
我使用AlertDialog作为数据输入,布局包括几个EditText字段。我可以引用这些字段,但似乎无法设置文本或获取文本: 这是xmlAndroid 如何在alertDialogs中设置文本和获取文本,android,android-alertdialog,Android,Android Alertdialog,我使用AlertDialog作为数据输入,布局包括几个EditText字段。我可以引用这些字段,但似乎无法设置文本或获取文本: 这是xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_
<?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:hint="Date (mm/dd/yyyy)"
android:inputType="date"
android:id="@+id/et_appointment_add_date" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Start Time"
android:inputType="time"
android:id="@+id/et_appointment_add_start_time" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="End time (optional)"
android:inputType="time"
android:id="@+id/et_appointment_add_end_time"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Location (optional)"
android:inputType="text"
android:id="@+id/et_appointment_add_location" />
</LinearLayout>
我看了其他的例子,但我看不出我的实现和其他似乎有效的实现之间的区别。我正在实现的事情的顺序有什么问题吗?首先像这样创建popupview(实际上是您做的) 然后将此视图设置为警报对话框生成器 像这样
builder.setView(popupview)代码>
不要直接设置视图(builder.setView(R.layout.activitydetails\u popup\u add\u activity);
这就是问题所在。popupview与此之间没有关系。您正在尝试从popupview设置文本和获取文本,但您的生成器使用的是直接视图。)然后再创建它
希望它能工作您没有去其他任何地方的最终视图弹出视图
。这可能就是问题所在。我建议你写你自己的对话,那样会容易些。我不懂你的意思。我创建了popupView,以便可以通过(EditText)popupView.findViewById()引用etditText字段。我也不明白你写我自己的对话是什么意思。您的意思是使用自定义的内容而不是alertDialog?您是xml布局文件吗?contais是作为ActivityDetails界面的一部分显示的编辑文本我在这里显示的xml不是活动的xml,而是我在这里膨胀的弹出窗口builder.setView(R.layout.ActivityDetails\u popup\u add\u activity);我是否需要以某种方式将其添加到ActivityDetails.xml中?太好了。工作起来很有魅力。所以,当我调用final View popupView=inflater.inflate(some.xml)时,我是否有效地创建了一个xml实例,使xml有点像类(或者更好,实际上只是模板)?耶。。明白了..这里popupview是view类的对象
CalendarView cv = (CalendarView)findViewById(R.id.cv_acitivtyDetails);
cv.setOnDateChangeListener(new OnDateChangeListener() {
@Override
public void onSelectedDayChange(CalendarView view, int year, int month,
int dayOfMonth) {
final String dateString = Integer.toString(month) + "/" + Integer.toString(dayOfMonth) + "/" + Integer.toString(year);
CharSequence options[] = new CharSequence[] {"Show", "Add", "Delete"};
AlertDialog.Builder builder = new AlertDialog.Builder(ActivityDetails.this);
builder.setTitle("Appointments");
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int position) {
switch (position) {
case 0:
AlertDialog.Builder builder = new AlertDialog.Builder(ActivityDetails.this);
LayoutInflater inflater = ActivityDetails.this.getLayoutInflater();
builder.setTitle("Add Activity Appointment");
builder.setMessage(currentAct);
builder.setView(R.layout.activitydetails_popup_add_activity);
final View popupView = inflater.inflate(R.layout.activitydetails_popup_add_activity, null);
// HERE I REFERENCE BOTH EDITTEXTS, THE ONE I WANT TO SET AND THE ONE I WANT TO GET
final EditText etDate = (EditText)popupView.findViewById(R.id.et_appointment_add_date);
final EditText etLoc = (EditText)popupView.findViewById(R.id.et_appointment_add_location);
// HERE I TRY TO SET THE DEFAULT DATE WHEN THE WINDOW POPS UP, BUT IT DOES NOT SEEM TO DO ANYTHING
etDate.setText(dateString);
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// HERE I AM USING A TOAST TO CHECK IF I GET THE TEXT FROM THE EDITTEXT, BUT IT ALWAYS SEEMS TO RETURN AN EMPTY STRING
String location = "LOC:" + etLoc.getText().toString();
Toast.makeText(getApplicationContext(), location, Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog b = builder.create();
b.show();
break;
case 1:
break;
case 2:
break;
}
}
});
builder.show();
}
});
final View popupView = inflater.inflate(R.layout.activitydetails_popup_add_activity, null);