的Android DialogFragment No_Title功能會影響佈局

Question

我有一個機器人DialogFragment一個顯示的ListView，含有一個標題和圖像的每一行。一切都顯示正常，直到我從DialogFragment刪除標題與getDialog（）。getWindow（）。requestFeature（Window.FEATURE_NO_TITLE）;

一旦我刪除標題，圖像停止顯示在ListView中，所有顯示的都是標題。 FEATURE_NO_TITLE如何可能影響DialogFragment中ListView的顯示？從字面上看，沒有其他代碼行改變 - 只有那一行，圖像停止在ListView中顯示。

對話片段的OnCreate

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    View view = inflater.inflate(R.layout.pick_photo_dialog_fragment, container); 

    getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE); 
    Button closeButton = (Button) view.findViewById(R.id.closeButton); 
    closeButton.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      dismiss(); 
     } 
    }); 

    listview = (ListView) view.findViewById(R.id.photosListView); 
    listadapter = new PhotoListAdapter(getActivity()); 
    listview.setAdapter(listadapter); 

    listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     public void onItemClick(AdapterView<?> a, View v, int position, long id) { 
      //do stuff 
     } 
    }); 

    return view; 
} 

XML的片段包含比的LinearLayout內ListView和按鈕而已...

<?xml version="1.0" encoding="utf-8"?> 
<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="vertical" 
    android:background="@color/dark_gray"> 

    <ListView android:id="@+id/photosListView" 
     android:layout_width="fill_parent" 
     android:layout_height="0dp" 
     android:layout_weight="1" 
     android:layout_marginLeft="10dp" 
     android:layout_marginRight="10dp" 
     android:clickable="false" 
     android:listSelector="@android:color/transparent" 
     android:cacheColorHint="@android:color/transparent" 
     /> 

    <Button android:id="@+id/closeButton" 
     android:layout_width="100dp" 
     android:layout_height="40dp" 
     android:layout_gravity="center" 
     android:text="Close" 
     android:textSize="20dp" 
     android:textStyle="bold" 
     android:textColor="@color/white" 
     android:typeface="sans" 
     android:background="@color/transparent"/> 


</LinearLayout> 

ListAdapter相關類

int[] mResources = {R.drawable.basketball, R.drawable.bodyweight, R.drawable.boulder, R.drawable.boxing, R.drawable.cardio, 
     R.drawable.crossfit, R.drawable.olympic, R.drawable.racquet, R.drawable.run, R.drawable.spin, R.drawable.squash, 
     R.drawable.swim, R.drawable.volleyball, R.drawable.weight, R.drawable.yoga}; 
String[] pictureNames = {"basketball", "bodyweight", "boulder", "boxing", "cardio", "crossfit", "olympic", "racquet", "run", 
     "spin", "squash", "swim", "volleyball", "weight", "yoga"}; 

public PhotoListAdapter(Context context) { 
    mInflater = LayoutInflater.from(context); 
    mContext = context; 
} 

public int getCount() { 
    return mResources.length; 
} 

public Object getItem(int position) { 
    return pictureNames[position]; 
} 

public long getItemId(int position) { 
    return position; 
} 

public View getView(int position, View convertView, ViewGroup parent) { 

    ViewHolder holder; 
    if (convertView == null) { 
     convertView = mInflater.inflate(R.layout.photo_list_row_view, null); 
     holder = new ViewHolder(); 
     holder.activityNameTV = (TextView) convertView.findViewById(R.id.activityName); 
     holder.activityImageIV = (ImageView) convertView.findViewById(R.id.activityImage); 
     convertView.setTag(holder); 
    } else { 
     holder = (ViewHolder) convertView.getTag(); 
    } 

    task = new CreateClassSetImageTask(position, holder.activityNameTV, holder.activityImageIV); 
    task.execute(); 

    return convertView; 
} 

static class ViewHolder { 
    TextView activityNameTV; 
    ImageView activityImageIV; 
} 

XML的ListView的行

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/mainlayout" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal"> 


     <TextView android:id="@+id/activityName" 
      android:layout_width="110dp" 
      android:layout_height="wrap_content" 
      android:text="" 
      android:textSize="20dp" 
      android:textStyle="normal" 
      android:textColor="#FFFFFF" 
      android:typeface="sans" 
      android:layout_gravity="left|center_vertical" 
      /> 

     <ImageView android:id="@+id/activityImage" 
      android:layout_width="0dp" 
      android:layout_height="100dp" 
      android:layout_weight="1" 
      android:scaleType="centerInside"/> 

</LinearLayout> 

異步任務載入圖像

public class CreateClassSetImageTask extends AsyncTask<Void, Void, Bitmap> { 
    WeakReference<ImageView> imageViewReference; 
    WeakReference<TextView> textViewReference; 
    int pictureNum; 

    public CreateClassSetImageTask(int pictureNumIn, TextView activityNameTVIn, ImageView activityIVIn) { 

     pictureNum = pictureNumIn; 
     imageViewReference = new WeakReference<ImageView>(activityIVIn); 
     textViewReference = new WeakReference<TextView>(activityNameTVIn); 
    } 

    @Override 
    protected void onPreExecute() { 

    } 

    @Override 
    protected void onPostExecute(Bitmap resultBitmap) { 
     if (imageViewReference != null && resultBitmap != null && textViewReference != null) { 
      final ImageView imageView = imageViewReference.get(); 
      if (imageView != null) { 
       imageView.setImageBitmap(resultBitmap); 
      } 
      final TextView textView = textViewReference.get(); 
      if (textView != null){ 
       textView.setText(pictureNames[pictureNum]); 
      } 
     } 
    } 

    @Override 
    protected Bitmap doInBackground(Void... params) { 

     return decodeSampledBitmapFromResource(mContext.getResources(), mResources[pictureNum], 100, 100); 
    } 


} 

public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId, 
                int reqWidth, int reqHeight) { 

    // First decode with inJustDecodeBounds=true to check dimensions 
    final BitmapFactory.Options options = new BitmapFactory.Options(); 
    options.inJustDecodeBounds = true; 
    BitmapFactory.decodeResource(res, resId, options); 

    // Calculate inSampleSize 
    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); 

    // Decode bitmap with inSampleSize set 
    options.inJustDecodeBounds = false; 
    return BitmapFactory.decodeResource(res, resId, options); 
} 

public static int calculateInSampleSize(
     BitmapFactory.Options options, int reqWidth, int reqHeight) { 
    // Raw height and width of image 
    final int height = options.outHeight; 
    final int width = options.outWidth; 
    int inSampleSize = 1; 

    if (height > reqHeight || width > reqWidth) { 

     final int halfHeight = height/2; 
     final int halfWidth = width/2; 

     // Calculate the largest inSampleSize value that is a power of 2 and keeps both 
     // height and width larger than the requested height and width. 
     while ((halfHeight/inSampleSize) > reqHeight 
       && (halfWidth/inSampleSize) > reqWidth) { 
      inSampleSize *= 2; 
     } 
    } 

    return inSampleSize; 
} 

Answer 1

嘗試......而不是使用getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);

在對話的這樣的onCreate方法設置DialogFragment.STYLE_NO_TITLE：

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    mNum = getArguments().getInt("num"); 
    style = DialogFragment.STYLE_NO_TITLE; break; 
    theme = android.R.style.Theme_Holo; break; 
    setStyle(style, theme); 
} 

Answer 2

在這裏你可以找到你的對話框整個代碼。基本上我刪除了AsyncTask（如果你需要例如從網絡下載圖片，你最終可以恢復它），並覆蓋方法onCreateDialog而不是onCreateView。

public class PhotoDialog extends DialogFragment { 

    public static PhotoDialog newInstance() { 
     return new PhotoDialog(); 
    } 

    @NonNull 
    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 
     View v = getActivity().getLayoutInflater().inflate(R.layout.pick_photo_dialog_fragment, null); 
     Button closeButton = (Button) v.findViewById(R.id.closeButton); 
     closeButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       dismiss(); 
      } 
     }); 
     ListView listView = (ListView) v.findViewById(R.id.photosListView); 
     ListAdapter listAdapter = new PhotoListAdapter(getActivity()); 
     listView.setAdapter(listAdapter); 
     listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      public void onItemClick(AdapterView<?> a, View v, int position, long id) { 
       //do stuff 
      } 
     }); 
     AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
     // REMOVE setTitle in case you don't want dialog title to be shown 
     //builder.setTitle("Dialog Title"); 
     builder.setView(v); 
     return builder.create(); 
    } 

    private static class PhotoListAdapter extends BaseAdapter { 

     private static ListItem[] _ITEMS = { 
       new ListItem("basketball", R.drawable.basketball), 
       new ListItem("bodyweight", R.drawable.bodyweight), 
       new ListItem("boulder", R.drawable.boulder), 
       new ListItem("boxing", R.drawable.boxing), 
       new ListItem("cardio", R.drawable.cardio), 
       new ListItem("crossfit", R.drawable.crossfit), 
       new ListItem("olympic", R.drawable.olympic), 
       new ListItem("racquet", R.drawable.racquet), 
       new ListItem("run", R.drawable.run), 
       new ListItem("spin", R.drawable.spin), 
       new ListItem("squash", R.drawable.squash), 
       new ListItem("swim", R.drawable.swim), 
       new ListItem("volleyball", R.drawable.volleyball), 
       new ListItem("weight", R.drawable.weight), 
       new ListItem("yoga", R.drawable.yoga) 
     }; 

     static class ViewHolder { 

      TextView activityNameTV; 
      ImageView activityImageIV; 

     } 

     static class ListItem { 

      String title; 
      int icon; 

      public ListItem(String title, int icon) { 
       this.title = title; 
       this.icon = icon; 
      } 

     } 

     private LayoutInflater mInflater; 

     public PhotoListAdapter(Context context) { 
      mInflater = LayoutInflater.from(context); 
     } 

     public int getCount() { 
      return _ITEMS.length; 
     } 

     public Object getItem(int position) { 
      return _ITEMS[position]; 
     } 

     public long getItemId(int position) { 
      return position; 
     } 

     public View getView(int position, View convertView, ViewGroup parent) { 
      ViewHolder holder; 

      if (convertView == null) { 
       convertView = mInflater.inflate(R.layout.photo_list_row_view, null); 
       holder = new ViewHolder(); 
       holder.activityNameTV = (TextView) convertView.findViewById(R.id.activityName); 
       holder.activityImageIV = (ImageView) convertView.findViewById(R.id.activityImage); 
       convertView.setTag(holder); 
      } else { 
       holder = (ViewHolder) convertView.getTag(); 
      } 

      ListItem item = (ListItem) getItem(position); 

      holder.activityNameTV.setText(item.title); 
      holder.activityImageIV.setImageResource(item.icon); 

      return convertView; 
     } 

    } 

}