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
That last contribution's use of contains(x,y) won't work directly on the result of getBounds() (except, by coincidence, when using "left" drawables). The getBounds method only provides the Rect defining points of the drawable item normalized with origin at 0,0 - so, you actually need to do the math of the original post to find out if the click is in the area of the drawable in the context of the containing EditText's dimensions, but change it for top, right, left etc. Alternatively you could describe a Rect that has coordinates actually relative to its position in the EditText container and use contains(), although in the end you're doing the same math.
将它们结合在一起就可以得到一个相当完整的解决方案，我只添加了一个实例属性consumesEvent，它让API用户决定是否应该通过使用其结果设置ACTION_CANCEL来传递单击事件。
此外，我不明白为什么边界和actionX, actionony值是实例属性，而不仅仅是堆栈上的本地属性。
下面是我在上面的基础上制作的实现的剪接图。它修复了正确使用事件需要返回false的问题。它增加了一个“模糊”因素。在我使用EditText字段中的Voice控件图标的用例中，我发现很难单击，因此模糊增加了被认为是单击可绘制对象的有效边界。对我来说，15个很好。我只需要drawableRight，所以我没有把数学插入其他的，以节省一些空间，但你明白这个想法。
package com.example.android;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.EditText;
import android.graphics.Rect;
import com.example.android.DrawableClickListener;
public class ClickableButtonEditText extends EditText {
public static final String LOG_TAG = "ClickableButtonEditText";
private Drawable drawableRight;
private Drawable drawableLeft;
private Drawable drawableTop;
private Drawable drawableBottom;
private boolean consumeEvent = false;
private int fuzz = 0;
private DrawableClickListener clickListener;
public ClickableButtonEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public ClickableButtonEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ClickableButtonEditText(Context context) {
super(context);
}
public void consumeEvent() {
this.setConsumeEvent(true);
}
public void setConsumeEvent(boolean b) {
this.consumeEvent = b;
}
public void setFuzz(int z) {
this.fuzz = z;
}
public int getFuzz() {
return fuzz;
}
@Override
public void setCompoundDrawables(Drawable left, Drawable top, Drawable right, Drawable bottom) {
if (right != null) {
drawableRight = right;
}
if (left != null) {
drawableLeft = left;
}
super.setCompoundDrawables(left, top, right, bottom);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
int x, y;
Rect bounds;
x = (int) event.getX();
y = (int) event.getY();
// this works for left since container shares 0,0 origin with bounds
if (drawableLeft != null) {
bounds = drawableLeft.getBounds();
if (bounds.contains(x - fuzz, y - fuzz)) {
clickListener.onClick(DrawableClickListener.DrawablePosition.LEFT);
if (consumeEvent) {
event.setAction(MotionEvent.ACTION_CANCEL);
return false;
}
}
} else if (drawableRight != null) {
bounds = drawableRight.getBounds();
if (x >= (this.getRight() - bounds.width() - fuzz) && x <= (this.getRight() - this.getPaddingRight() + fuzz)
&& y >= (this.getPaddingTop() - fuzz) && y <= (this.getHeight() - this.getPaddingBottom()) + fuzz) {
clickListener.onClick(DrawableClickListener.DrawablePosition.RIGHT);
if (consumeEvent) {
event.setAction(MotionEvent.ACTION_CANCEL);
return false;
}
}
} else if (drawableTop != null) {
// not impl reader exercise :)
} else if (drawableBottom != null) {
// not impl reader exercise :)
}
}
return super.onTouchEvent(event);
}
@Override
protected void finalize() throws Throwable {
drawableRight = null;
drawableBottom = null;
drawableLeft = null;
drawableTop = null;
super.finalize();
}
public void setDrawableClickListener(DrawableClickListener listener) {
this.clickListener = listener;
}
}
其他回答
上述问题的一个可能的解决方案是使用android的新材质组件TextInputLayout。
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/searchInput"
style="@style/Widget.App.TextInputLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/search"
app:endIconMode="custom"
app:endIconContentDescription="Search"
app:endIconDrawable="@drawable/ic_search">
<EditText
android:id="@+id/et_search"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</com.google.android.material.textfield.TextInputLayout>
在这里设置TextInputLayout属性endIconMode时，将一个按钮放置在所包含的EditText的末尾。
另外app:endIconMode = "custom"允许自定义图标的点击功能
最后，为了监听结束图标单击，调用外围TextInputLayout组件上的setEndIconClickListener()。
使用可扩展的textview缓冲区可能是一个解决方案。看看这个简短而切中要害的教程:首先，点击事件要容易得多
https://android-designing.blogspot.com/2017/01/spannable-textview-with-image-clickable.html?m=1
@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);
}
这一切都很棒，但为什么不让它变得更简单呢?
不久前我也遇到过这种情况……和android touchlistener工作得很好，但在使用上有限制..我找到了另一个解决方案，我希望能帮助你:
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/zero_row">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="match_parent">
<ProgressBar
android:id="@+id/loadingProgressBar"
android:layout_gravity="center"
android:layout_width="28dp"
android:layout_height="28dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:background="@drawable/edittext_round_corners"
android:layout_height="match_parent"
android:layout_marginLeft="5dp">
<ImageView
android:layout_width="28dp"
android:layout_height="28dp"
app:srcCompat="@android:drawable/ic_menu_search"
android:id="@+id/imageView2"
android:layout_weight="0.15"
android:layout_gravity="center|right"
android:onClick="OnDatabaseSearchEvent" />
<EditText
android:minHeight="40dp"
android:layout_marginLeft="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/edittext_round_corners"
android:inputType="textPersonName"
android:hint="Search.."
android:textColorHint="@color/AndroidWhite"
android:textColor="@color/AndroidWhite"
android:ems="10"
android:id="@+id/e_d_search"
android:textCursorDrawable="@color/AndroidWhite"
android:layout_weight="1" />
<ImageView
android:layout_width="28dp"
android:layout_height="28dp"
app:srcCompat="@drawable/ic_oculi_remove2"
android:id="@+id/imageView3"
android:layout_gravity="center|left"
android:layout_weight="0.15"
android:onClick="onSearchEditTextCancel" />
</LinearLayout>
<!--android:drawableLeft="@android:drawable/ic_menu_search"-->
<!--android:drawableRight="@drawable/ic_oculi_remove2"-->
</LinearLayout>
</LinearLayout>
现在您可以创建ImageClick侦听器或事件，并对文本做任何您想做的事情。这个edittext_round_corners.xml文件
<item android:state_pressed="false" android:state_focused="false">
<shape>
<gradient
android:centerY="0.2"
android:startColor="@color/colorAccent"
android:centerColor="@color/colorAccent"
android:endColor="@color/colorAccent"
android:angle="270"
/>
<stroke
android:width="0.7dp"
android:color="@color/colorAccent" />
<corners
android:radius="5dp" />
</shape>
</item>
实际上，您不需要扩展任何类。假设我有一个EditText editComment和一个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()，因为我们想要得到实际的触摸在屏幕上的位置，而不是相对于父。
要获得左侧点击
if(event.getRawX() <= (editComment.getCompoundDrawables()[DRAWABLE_LEFT].getBounds().width()))
