之前的解决方案在Xamarin Android中都不适用。我能够得到正确的绘制点击监听器工作使用以下:

创建以下OnEditTextTouch事件监听器:

  private void OnEditTextTouch(object sender, View.TouchEventArgs e)
    {
        var rightDrawable = _autoCompleteTextViewSearch.GetCompoundDrawables()[2];

        if (rightDrawable == null || e.Event.Action != MotionEventActions.Up)
        {
            e.Handled = false;

            return;
        }

        if (e.Event.GetX() >= _autoCompleteTextViewSearch.Width - _autoCompleteTextViewSearch.TotalPaddingRight)
        {
            // Invoke your desired action here.

            e.Handled = true;
        }

        // Forward the event along to the sender (crucial for default behaviour)
        (sender as AutoCompleteTextView)?.OnTouchEvent(e.Event);
    }

订阅Touch事件:

_autoCompleteTextViewSearch.Touch += OnEditTextTouch;

如果drawable在左边，这对你有帮助。(适用于使用RTL布局的用户)

 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() <= (searchbox.getLeft() + searchbox.getCompoundDrawables()[DRAWABLE_LEFT].getBounds().width())) {
                                     // your action here

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

非常非常好，感谢所有参与讨论的人。因此，如果你不想处理扩展类带来的不便，你可以执行以下操作(仅为正确的可绘制对象实现)

this.keyword = (AutoCompleteTextView) findViewById(R.id.search);
this.keyword.setOnTouchListener(new RightDrawableOnTouchListener(keyword) {
        @Override
        public boolean onDrawableTouch(final MotionEvent event) {
            return onClickSearch(keyword,event);
        }
    });

private boolean onClickSearch(final View view, MotionEvent event) {
    // do something
    event.setAction(MotionEvent.ACTION_CANCEL);
    return false;
}

下面是基于@Mark的回答的基本侦听器实现

public abstract class RightDrawableOnTouchListener implements OnTouchListener {
    Drawable drawable;
    private int fuzz = 10;

    /**
     * @param keyword
     */
    public RightDrawableOnTouchListener(TextView view) {
        super();
        final Drawable[] drawables = view.getCompoundDrawables();
        if (drawables != null && drawables.length == 4)
            this.drawable = drawables[2];
    }

    /*
     * (non-Javadoc)
     * 
     * @see android.view.View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent)
     */
    @Override
    public boolean onTouch(final View v, final MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN && drawable != null) {
            final int x = (int) event.getX();
            final int y = (int) event.getY();
            final Rect bounds = drawable.getBounds();
            if (x >= (v.getRight() - bounds.width() - fuzz) && x <= (v.getRight() - v.getPaddingRight() + fuzz)
                    && y >= (v.getPaddingTop() - fuzz) && y <= (v.getHeight() - v.getPaddingBottom()) + fuzz) {
                return onDrawableTouch(event);
            }
        }
        return false;
    }

    public abstract boolean onDrawableTouch(final MotionEvent event);

}

我使用了一个简短的解决方案，甚至适用于对话的片段。

            //The listener of a drawableEnd button for clear a TextInputEditText
            textValue.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    if(event.getAction() == MotionEvent.ACTION_UP) {
                        final TextView textView = (TextView)v;
                        if(event.getX() >= textView.getWidth() - textView.getCompoundPaddingEnd()) {
                            textView.setText(""); //Clear a view, example: EditText or TextView
                            return true;
                        }
                    }
                    return false;
                }
            });

之前的解决方案在Xamarin Android中都不适用。我能够得到正确的绘制点击监听器工作使用以下:

创建以下OnEditTextTouch事件监听器:

  private void OnEditTextTouch(object sender, View.TouchEventArgs e)
    {
        var rightDrawable = _autoCompleteTextViewSearch.GetCompoundDrawables()[2];

        if (rightDrawable == null || e.Event.Action != MotionEventActions.Up)
        {
            e.Handled = false;

            return;
        }

        if (e.Event.GetX() >= _autoCompleteTextViewSearch.Width - _autoCompleteTextViewSearch.TotalPaddingRight)
        {
            // Invoke your desired action here.

            e.Handled = true;
        }

        // Forward the event along to the sender (crucial for default behaviour)
        (sender as AutoCompleteTextView)?.OnTouchEvent(e.Event);
    }

订阅Touch事件:

_autoCompleteTextViewSearch.Touch += OnEditTextTouch;

Kotlin是一种很棒的语言，每个类都可以使用新方法进行扩展。让我们为EditText类介绍一个新方法，它将捕捉点击到右绘图。

fun EditText.onRightDrawableClicked(onClicked: (view: EditText) -> Unit) {
this.setOnTouchListener { v, event ->
    var hasConsumed = false
    if (v is EditText) {
        if (event.x >= v.width - v.totalPaddingRight) {
            if (event.action == MotionEvent.ACTION_UP) {
                onClicked(this)
            }
            hasConsumed = true
        }
    }
    hasConsumed
}
}

你可以看到它以回调函数作为参数，当用户单击右可绘制时调用。

val username = findViewById<EditText>(R.id.username_text)
    username.onRightDrawableClicked {
        it.text.clear()
    }