处理 EditText 中可绘制对象的点击事件

问题描述

我使用以下 XML 在 EditText 小部件中添加了文本右侧的图像:

I have added an image right of the text in an EditText widget, using the following XML:

<EditText
  android:id="@+id/txtsearch"
  ...
  android:layout_gravity="center_vertical"
  android:background="@layout/shape"
  android:hint="Enter place,city,state"
  android:drawableRight="@drawable/cross" />

但我想在单击嵌入图像时清除 EditText.我该怎么做?

But I want to clear the EditText when the embedded image is clicked. How can I do this?

推荐答案

其实你不需要扩展任何类.假设我有一个带有 drawableRight 的 EditText editComment

Actually you don't need to extend any class. Let's say I have an EditText editComment with a drawableRight

editComment.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        final int DRAWABLE_LEFT = 0;
        final int DRAWABLE_TOP = 1;
        final int DRAWABLE_RIGHT = 2;
        final int DRAWABLE_BOTTOM = 3;

        if(event.getAction() == MotionEvent.ACTION_UP) {
            if(event.getRawX() >= (editComment.getRight() - editComment.getCompoundDrawables()[DRAWABLE_RIGHT].getBounds().width())) {
                // your action here

                return true;
            }
        }
        return false;
    }
});

我们 getRawX() 因为我们想要获取屏幕上触摸的实际位置，而不是相对于父级.

we getRawX() because we want to get the actual position of touch on screen, not relative to parent.

左键点击

if(event.getRawX() <= (editComment.getCompoundDrawables()[DRAWABLE_LEFT].getBounds().width())) 

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