我已经在EditText小部件中添加了文本右侧的图像，使用以下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。我该怎么做呢?
当前回答
用于左侧可绘制的单击侦听器
txt.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
final int DRAWABLE_LEFT = 0;
if (event.getAction() == MotionEvent.ACTION_UP) {
if (event.getRawX() <= (txt
.getCompoundDrawables()[DRAWABLE_LEFT].getBounds().width() +
txt.getPaddingLeft() +
txt.getLeft())) {
//TODO do code here
}
return true;
}
}
return false;
}
});
其他回答
对于任何不想实现可怕的点击处理的人。你可以用RelativeLayout实现同样的效果。有了它，你甚至可以自由处理可绘制对象的定位。
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</android.support.design.widget.TextInputLayout>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerInParent="true"
android:src="@drawable/ic_undo"/>
</RelativeLayout>
ImageView的位置将与你使用drawableEnd相同-加上你不需要所有的触摸监听器处理。只需要点击ImageView的监听器就可以了。
@Override
public boolean onTouch(View v, MotionEvent event) {
Drawable drawableObj = getResources().getDrawable(R.drawable.search_btn);
int drawableWidth = drawableObj.getIntrinsicWidth();
int x = (int) event.getX();
int y = (int) event.getY();
if (event != null && event.getAction() == MotionEvent.ACTION_UP) {
if (x >= (searchPanel_search.getWidth() - drawableWidth - searchPanel_search.getPaddingRight())
&& x <= (searchPanel_search.getWidth() - searchPanel_search.getPaddingRight())
&& y >= searchPanel_search.getPaddingTop() && y <= (searchPanel_search.getHeight() - searchPanel_search.getPaddingBottom())) {
getSearchData();
}
else {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(searchPanel_search, InputMethodManager.SHOW_FORCED);
}
}
return super.onTouchEvent(event);
}
最好在编辑文本的右边有ImageButton，并给负布局边距与编辑文本重叠。在ImageButton上设置监听器并执行操作。
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;
这是我的简单解决方案，只是把ImageButton放在EditText上:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText android:id="@+id/editTextName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:imeOptions="actionSearch"
android:inputType="text"/>
<ImageButton android:id="@+id/imageViewSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_action_search"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"/>
</RelativeLayout>
