用layer-list一次加载多个层次图片

layer.xml:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android"> 
    <item android:drawable="@drawable/t"> 
    <item android:drawable="@drawable/tt"> 
</layer-list> 

1.((ImageView) findViewById(R.id.imageview)).setImageDrawable(getResources().getDrawable(R.drawable.layer)); 

2.代码实现

 Resources r = getResources(); 
     Drawable[] layers = new Drawable[2]; 
     layers[0] = r.getDrawable(R.drawable.cor_info); 
     layers[1] = r.getDrawable(R.drawable.icon); 
     LayerDrawable layerDrawable = new LayerDrawable(layers); 
     
     ((ImageView) findViewById(R.id.imageview)).setImageDrawable(layerDrawable);