我有一个DialogFragment的问题。为了创建视图,我使用了安卓博客上描述的方法。 这是我的DialogFragment:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View myLayout = inflater.inflate(R.layout.dialog_connect, null);
edit = (EditText) myLayout.findViewById(R.id.password_edit);
edit.requestFocus();
getDialog().getWindow().setSoftInputMode(LayoutParams.SOFT_INPUT_STATE_VISIBLE);
return myLayout;
}
如果我使用onCreateView(),它可以工作,但是我想创建一个AlterDialog,为此,我有以下代码:
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Inflate and set the layout for the dialog
// Pass null as the parent view because its going in the dialog layout
builder
.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
callback.onYesConnectClick(edit.getText().toString());
}
})
.setNegativeButton(R.string.refuse, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
callback.onNoConnectClick();
}
});
return builder.create();
}
如果我注释掉onCreateView()中的代码,应用程序可以正常运行,但我无法强制显示键盘。如果我取消注释onCreateView(),应用程序会崩溃。 以下是堆栈跟踪:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test/com.test.ProfileActivity_}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
AndroidRuntime at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2312)
AndroidRuntime at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:2362)
AndroidRuntime at android.app.ActivityThread.access$600(ActivityThread.java:156)
AndroidRuntime at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1250)
AndroidRuntime at android.os.Handler.dispatchMessage(Handler.java:99)
AndroidRuntime at android.os.Looper.loop(Looper.java:137)
AndroidRuntime at android.app.ActivityThread.main(ActivityThread.java:5229)
AndroidRuntime at java.lang.reflect.Method.invokeNative(Native Method)
AndroidRuntime at java.lang.reflect.Method.invoke(Method.java:525)
AndroidRuntime at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:799)
AndroidRuntime at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:566)
AndroidRuntime at dalvik.system.NativeStart.main(Native Method)
AndroidRuntime Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
所以我的问题是 ==> 当AlertDialog出现时,我能否使用它并显示键盘?
WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE
。这个解决方案是有效的,但如果你想延迟显示键盘,它就不起作用了(例如,lifecycleScope.launch { delay(300) dialog?.window?.setSoftInputMode(SOFT_INPUT_STATE_VISIBLE) }
)。 - CoolMind