java - 当焦点状态改变时如何改变 "drawableLeft"？

Question

1.我不想为每个组件编写太多选择器。

2.我尝试编写一个EditText的子类，命名为EditTextDrawable。然后我这样做了:

public EditTextWithDrawable(Context context, final Drawable normal, final Drawable focus){
    super(context);
    setOnFocusChangeListener(new OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            // changeDrawable(hasFocus, normal, focus);
        }
    });

但是如果我想重置 OnFocusChangeListener，我必须再次输入代码。很无聊。

有没有简单的方法可以解决这个问题？谢谢先进!

Answer 1

@Override
protected void onFocusChanged(boolean focused, int direction,
        Rect previouslyFocusedRect) {
    // TODO Auto-generated method stub
    super.onFocusChanged(focused, direction, previouslyFocusedRect);
    if (focused) {
        setCompoundDrawablesWithIntrinsicBounds(fous, null, null, null);
    }else {
        setCompoundDrawablesWithIntrinsicBounds(normal, null, null, null);
    }
}