扩展视图的Fresco-CustomView无法显示图像

我想创建一个自定义视图，该视图可以扩展视图并具有壁画功能。图像可以下载，但不能显示。请帮我，的代码如下：扩展视图的Fresco-CustomView无法显示图像

public class QView<DH extends DraweeHierarchy> extends View { 

    private DraweeHolder<DH> mDraweeHolder; 
    private boolean mInitialised = false; 

    public QView(Context context) { 
     super(context); 
     init(context); 
    } 

    @SuppressWarnings("unchecked") 
    private void init(Context context) { 
     if(!mInitialised){ 
      GenericDraweeHierarchy hierarchy = new GenericDraweeHierarchyBuilder(getResources()).build(); 
      mDraweeHolder = (DraweeHolder<DH>) DraweeHolder.create(hierarchy, context); 
      mInitialised = true; 
     } 
    } 

    @Override 
    public void onStartTemporaryDetach() { 
     super.onStartTemporaryDetach(); 
     mDraweeHolder.onDetach(); 
    } 

    @Override 
    public void onFinishTemporaryDetach() { 
     super.onFinishTemporaryDetach(); 
     mDraweeHolder.onAttach(); 
    } 

    @Override 
    protected void onAttachedToWindow() { 
     super.onAttachedToWindow(); 
     mDraweeHolder.onAttach(); 
    } 

    @Override 
    protected void onDetachedFromWindow() { 
     super.onDetachedFromWindow(); 
     mDraweeHolder.onDetach(); 
    } 

    @SuppressLint("ClickableViewAccessibility") 
    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     return mDraweeHolder.onTouchEvent(event) || super.onTouchEvent(event); 
    } 

    @Override 
    protected boolean verifyDrawable(Drawable who) { 
     if (who == mDraweeHolder.getTopLevelDrawable()) { 
      return true; 
     } 
     return true; 
    } 

    public void setImageURI(Uri uri) { 
     DraweeController controller = Fresco.newDraweeControllerBuilder() 
       .setUri(uri) 
       .setOldController(mDraweeHolder.getController()) 
       .build(); 
     mDraweeHolder.setController(controller); 
    } 

    @Override 
    protected void onDraw(Canvas canvas) { 
     super.onDraw(canvas); 
     Drawable drawable = mDraweeHolder.getHierarchy().getTopLevelDrawable(); 
     //Drawable drawable = getResources().getDrawable(R.drawable.weekend_move_access); 
     drawable.setBounds(0, 0, 400, 400); 
     drawable.draw(canvas); 
    } 
}

MainActivity.java：

LinearLayout ll = (LinearLayout)findViewById(R.id.viewObj); 
    //SimpleDraweeView view = new SimpleDraweeView(this); 
    QView view = new QView(this); 
    LinearLayout.LayoutParams layout = new LinearLayout.LayoutParams(400, 400); 
    view.setLayoutParams(layout); 
    view.setImageURI(Uri.parse("http://d.hiphotos.baidu.com/image/pic/item/aa64034f78f0f7363465230c0855b319ebc41327.jpg")); 
    ll.addView(view);

来源

2016-01-06 Hilda

你为什么这么做？为什么不使用SimpleDraweeView？ – tyronen

因为我想用一个普通的视图来做更多的事情，但simpledraweeview只扩展了imageview。 – Hilda

我HAVA做到了。您必须在ImageView中实现updateDrawable和setBounds方法。因为RootDrawable的getIntrinsicWidth（）和getIntrinsicHeight（）是-1。

来源

2016-01-07 07:25:36 Hilda

扩展视图的Fresco-CustomView无法显示图像

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