Android，dialog_fragment。 dialog.requestWindowFeature（Window.FEATURE_NO_TITLE）

Question

我使用對話框片段，一切都很好，直到我試圖刪除標題欄。有一個代碼：

對話框XML：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
android:background="#f0f0f0"> 

<GridView 
    android:id="@+id/gv_registration_avatars" 
    android:layout_width="fill_parent" 
    android:layout_height="0dp" 
    android:layout_weight="1" 
    android:layout_margin="@dimen/avatar_layout_margin" 
    android:columnWidth="100dp" 
    android:drawSelectorOnTop="true" 
    android:gravity="center" 
    android:numColumns="2" 
    android:stretchMode="columnWidth" 
    android:focusable="true" 
    android:clickable="true" 
    /> 
<Button 
    android:id="@+id/dismiss" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginBottom="@dimen/avatar_layout_margin" 
    android:layout_marginRight="@dimen/avatar_layout_margin" 
    android:layout_below="@id/gv_registration_avatars" 
    android:text="Ok" 
    android:layout_gravity="right"/> 

<ProgressBar 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/progressBar_avatars" 
    android:layout_centerInParent="true" 
    android:visibility="gone"/> 

DialogFragment類是：

public class AvatarPickDialogFragment extends DialogFragment { 

private GridView mGridView; 
private ProgressBar mProgressBar; 
private GridViewAvatarAdapter mGridAdapter; 
private ArrayList<String> mGridData; 



@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.avatar_pick_dialog_fragment, container, false); 
    mGridView = (GridView) rootView.findViewById(R.id.gv_registration_avatars); 
    mProgressBar = (ProgressBar) rootView.findViewById(R.id.progressBar_avatars); 
    mGridData = new ArrayList<>(); 
    mGridAdapter = new GridViewAvatarAdapter(getActivity(), R.layout.grid_item_avatar_layout, mGridData); 
    mGridView.setAdapter(mGridAdapter); 
    mProgressBar.setVisibility(View.VISIBLE); 
    String item; 
    for (int i = 0; i < 10; i++) { 
     item = new String(); 
     item= new String("string"); 

     mGridData.add(item); 

    } 
    mProgressBar.setVisibility(View.GONE); 
    mGridAdapter.setGridData(mGridData); 

    Button dismiss = (Button) rootView.findViewById(R.id.dismiss); 
    dismiss.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      dismiss(); 
     } 
    }); 
    return rootView; 
} 

@Override 
public Dialog onCreateDialog(Bundle savedInstanceState) { 
    // The only reason you might override this method when using onCreateView() is 
    // to modify any dialog characteristics. For example, the dialog includes a 
    // title by default, but your custom layout might not need it. So here you can 
    // remove the dialog title, but you must call the superclass to get the Dialog. 
    Dialog dialog = super.onCreateDialog(savedInstanceState); 
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); 
    return dialog; 
} 
} 

當我使用dialog.requestWindowFeature（Window.FEATURE_NO_TITLE）標題欄消失，但我的對話框窗口寬度更改爲很短，我不知道爲什麼，因爲標題欄沒問題。有什麼建議麼？

Answer 1

您可以嘗試在片段的在onStart設置片段寬度（）方法

@Override 
public void onStart() 
{ 
    super.onStart(); 

    if (getDialog() == null) 
    return; 

    getDialog().getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 

}