代码中设置TextView的drawableLeft属性

Drawable drawable= getResources().getDrawable(R.drawable.drawable);  
/// 这一步必须要做,否则不会显示.  
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());  
myTextview.setCompoundDrawables(drawable,null,null,null);  

//隐藏Drawables  
myTextview.setCompoundDrawables(null,null,null,null);