使用片段的對話框顯示錯誤

我剛剛開始在Android中實現DialogFragment，因爲它拋出了一個錯誤，我在這裏發佈其他java文件。使用片段的對話框顯示錯誤

錯誤：

 FATAL EXCEPTION: main 
Process: com.example.cisystem3.dialogfragment, PID: 3519 
android.util.AndroidRuntimeException: requestFeature() must be called before adding contentvat com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:302)                       at com.android.internal.app.AlertController.installContent(AlertController.java:233) 
at android.app.AlertDialog.onCreate(AlertDialog.java:356) 
    at android.app.Dialog.dispatchOnCreate(Dialog.java:373) 
    at android.app.Dialog.show(Dialog.java:274) 
at android.app.DialogFragment.onStart(DialogFragment.java:490) 
at android.app.Fragment.performStart(Fragment.java:2077) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:922) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) 
at android.app.BackStackRecord.run(BackStackRecord.java:834) 
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1452) 
    at android.app.FragmentManagerImpl$1.run(FragmentManager.java:447) 
    at android.os.Handler.handleCallback(Handler.java:739) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5254) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

這裏是我的DialogFragment onCreateDialog方法

@Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 

     AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
     builder.setTitle("My Dialog Box"); 
     builder.setMessage("Do you like this dialog"); 
     builder.setNegativeButton("No", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialogInterface, int i) { 
       Toast.makeText(getActivity(), "No Clicked", Toast.LENGTH_SHORT).show(); 
      } 
     }); 
     builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialogInterface, int i) { 
       Toast.makeText(getActivity(), "Yes Clicked", Toast.LENGTH_SHORT).show(); 
      } 
     }); 
     Dialog dialog = builder.create(); 

     return dialog; 
    }

MainActivity點擊收聽

btnClick=(Button)findViewById(R.id.button); 
     btnClick.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       FragmentManager manager=getFragmentManager(); 
       BlankFragment myFragment=new BlankFragment(); 
       myFragment.show(manager,"My Dialog"); 
      } 
     });

來源

2016-08-02 Pranesh Sahu

如果要顯示警報對話框，請勿使用對話框片段。當你想顯示你的自定義佈局時使用對話框片段。 –

在開發者網站，即https://developer.android.com/guide/topics/ui/dialogs.html，他們沒有提及任何東西 –

什麼是你的'onCreateDialog（）'寫的所有代碼，你可以直接做到這一點從活動。爲什麼額外的對話片段 –

寫此功能在您的MainActivity

private void openDialog() { 
    AlertDialog.Builder builder = new AlertDialog.Builder(this); 
    builder.setTitle("My Dialog Box"); 
    builder.setMessage("Do you like this dialog"); 
    builder.setNegativeButton("No", new DialogInterface.OnClickListener() { 
     @Override 
     public void onClick(DialogInterface dialogInterface, int i) { 
      Toast.makeText(MainActivity.this, "No Clicked", Toast.LENGTH_SHORT).show(); 
     } 
    }); 
    builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() { 
     @Override 
     public void onClick(DialogInterface dialogInterface, int i) { 
      Toast.makeText(MainActivity.this, "Yes Clicked", Toast.LENGTH_SHORT).show(); 
     } 
    }); 
    builder.show(); 
}

然後調用它，如下

btnClick=(Button)findViewById(R.id.button); 
    btnClick.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      openDialog(); 
     } 
    });

你不需要DialogFragment。完全刪除DialogFragment代碼。

來源

2016-08-02 13:21:56 Elye

使用片段的對話框顯示錯誤

回答

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