問題描述

我使用以下 XML 在 EditText 小部件中添加了文本右側的圖像:

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" />

但我想在單擊嵌入圖像時清除 EditText.我該怎么做?

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

推薦答案

其實你不需要擴展任何類.假設我有一個帶有 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;
    }
});

我們 getRawX() 因為我們想要獲取屏幕上觸摸的實際位置，而不是相對于父級.

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

左鍵點擊

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

這篇關于處理 EditText 中可繪制對象的點擊事件的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！