可绘制资源的ID

Question

如何动态地将drawable的位置从android：drawableLeft更改为android：drawableRight/left/bottom？ 我知道，我应该使用setCompoundDrawablesWithIntrinsicBounds方法，但首先我需要知道R.drawable。 *并在setCompoundDrawablesWithIntrinsicBounds方法中使用它。

private void changeLabelPosition(View view){ 
    int drawableID = 
    if(getGravity = Gravity.LEFT){ 
     view.setCompoundDrawablesWithIntrinsicBounds(drawableID, 0, 0, 0); 
    }else if(getGravity = Gravity.TOP){ 
     view.setCompoundDrawablesWithIntrinsicBounds(0, drawableID, 0 , 0); 
    }else if(getGravity = Gravity.RIGHT){ 
     view.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawableID, 0); 
    }else if(getGravity = Gravity.BOTTOM){ 
     view.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, drawableID); 
    }  
} 

所以，我需要视图的可绘制资源的ID。

这种方式是不恰当的，原因有很多按钮，而它`不是好办法，使用硬编码：

drawableID = 0; 
switch (view.getId()){ 
case R.id.button_add: 
    drawableID = R.drawable.button_add; 
case R.id.button_remove: 
    drawableID = R.drawable.button_remove; 
... 
... 
... 
} 
if(getGravity = Gravity.LEFT){ 
    view.setCompoundDrawablesWithIntrinsicBounds(drawableID, 0, 0, 0); 
} 
... 
... 
... 
enter code here 

编辑

switch (mMainPanelGravity) 
{ 
case Gravity.TOP: 
for (View v : arrayOfViews) 
{ 
Drawable[] drawables = ((TextView) v) .getCompoundDrawables(); 
if (drawables.length != 0) { 
Drawable dr = drawables[0]; 
((TextView) v).setCompoundDrawablesWithIntrinsicBounds(null, dr, null, null); 
} 

Answer 1

setCompoundDrawablesWithIntrinsicBounds(left, top, right, bottom)还将接受Drawable

你得到Drawable的视图，你可以直接设置它

Drawable drawable=yourview.getBackground(); 

然后

view.setCompoundDrawablesWithIntrinsicBounds(drawable, null, null, null) 

编辑：

Drawable[] drawables = view.getCompoundDrawables() 

if(drawables.length!=0) 
{ 
Drawable drawable=drawable[0]; 
}