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
我想这是一个很好的方法，由Hardik4560推荐，
https://stackoverflow.com/a/13135554/7184172
其他回答
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()))
复合绘图不应该是可点击的。 在水平LinearLayout中使用单独的视图并在它们上使用单击处理程序会更干净。
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:background="@color/white"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:layout_marginRight="20dp"
android:layout_marginEnd="20dp"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
android:translationZ="4dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@color/white"
android:minWidth="40dp"
android:scaleType="center"
app:srcCompat="@drawable/ic_search_map"/>
<android.support.design.widget.TextInputEditText
android:id="@+id/search_edit"
style="@style/EditText.Registration.Map"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:hint="@string/hint_location_search"
android:imeOptions="actionSearch"
android:inputType="textPostalAddress"
android:maxLines="1"
android:minHeight="40dp" />
<ImageView
android:id="@+id/location_gps_refresh"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@color/white"
android:minWidth="40dp"
android:scaleType="center"
app:srcCompat="@drawable/selector_ic_gps"/>
</LinearLayout>
我创建了一个有用的抽象类DrawableClickListener实现OnTouchListener。
除了DrawableClickListener类之外，我还创建了4个额外的抽象类，它们扩展了DrawableClickListener类，并处理对正确象限的可绘制区域的单击。
LeftDrawableClickListener TopDrawableClickListener RightDrawableClickListener BottomDrawableClickListener
考虑要点
需要考虑的一件事是，如果这样做，图像不会调整大小;因此，在放入res/drawable文件夹之前，图像必须正确缩放。
如果你定义一个LinearLayout包含一个ImageView和一个TextView，这是很容易操纵图像的大小显示。
activity_my.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/myTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="replace this with a variable"
android:textSize="30sp"
android:drawableLeft="@drawable/my_left_image"
android:drawableRight="@drawable/my_right_image"
android:drawablePadding="9dp" />
</RelativeLayout>
MyActivity.java
package com.company.project.core;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class MyActivity extends Activity
{
@Override
protected void onCreate( Bundle savedInstanceState )
{
super.onCreate( savedInstanceState );
setContentView( R.layout.activity_my );
final TextView myTextView = (TextView) this.findViewById( R.id.myTextView );
myTextView.setOnTouchListener( new DrawableClickListener.LeftDrawableClickListener(myTextView)
{
@Override
public boolean onDrawableClick()
{
// TODO : insert code to perform on clicking of the LEFT drawable image...
return true;
}
} );
myTextView.setOnTouchListener( new DrawableClickListener.RightDrawableClickListener(myTextView)
{
@Override
public boolean onDrawableClick()
{
// TODO : insert code to perform on clicking of the RIGHT drawable image...
return true;
}
} );
}
}
DrawableClickListener.java
package com.company.project.core;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.TextView;
/**
* This class can be used to define a listener for a compound drawable.
*
* @author Matthew Weiler
* */
public abstract class DrawableClickListener implements OnTouchListener
{
/* PUBLIC CONSTANTS */
/**
* This represents the left drawable.
* */
public static final int DRAWABLE_INDEX_LEFT = 0;
/**
* This represents the top drawable.
* */
public static final int DRAWABLE_INDEX_TOP = 1;
/**
* This represents the right drawable.
* */
public static final int DRAWABLE_INDEX_RIGHT = 2;
/**
* This represents the bottom drawable.
* */
public static final int DRAWABLE_INDEX_BOTTOM = 3;
/**
* This stores the default value to be used for the
* {@link DrawableClickListener#fuzz}.
* */
public static final int DEFAULT_FUZZ = 10;
/* PRIVATE VARIABLES */
/**
* This stores the number of pixels of "fuzz" that should be
* included to account for the size of a finger.
* */
private final int fuzz;
/**
* This will store a reference to the {@link Drawable}.
* */
private Drawable drawable = null;
/* CONSTRUCTORS */
/**
* This will create a new instance of a {@link DrawableClickListener}
* object.
*
* @param view
* The {@link TextView} that this {@link DrawableClickListener}
* is associated with.
* @param drawableIndex
* The index of the drawable that this
* {@link DrawableClickListener} pertains to.
* <br />
* <i>use one of the values:
* <b>DrawableOnTouchListener.DRAWABLE_INDEX_*</b></i>
*/
public DrawableClickListener( final TextView view, final int drawableIndex )
{
this( view, drawableIndex, DrawableClickListener.DEFAULT_FUZZ );
}
/**
* This will create a new instance of a {@link DrawableClickListener}
* object.
*
* @param view
* The {@link TextView} that this {@link DrawableClickListener}
* is associated with.
* @param drawableIndex
* The index of the drawable that this
* {@link DrawableClickListener} pertains to.
* <br />
* <i>use one of the values:
* <b>DrawableOnTouchListener.DRAWABLE_INDEX_*</b></i>
* @param fuzzOverride
* The number of pixels of "fuzz" that should be
* included to account for the size of a finger.
*/
public DrawableClickListener( final TextView view, final int drawableIndex, final int fuzz )
{
super();
this.fuzz = fuzz;
final Drawable[] drawables = view.getCompoundDrawables();
if ( drawables != null && drawables.length == 4 )
{
this.drawable = drawables[drawableIndex];
}
}
/* OVERRIDDEN PUBLIC METHODS */
@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 ( this.isClickOnDrawable( x, y, v, bounds, this.fuzz ) )
{
return this.onDrawableClick();
}
}
return false;
}
/* PUBLIC METHODS */
/**
*
* */
public abstract boolean isClickOnDrawable( final int x, final int y, final View view, final Rect drawableBounds, final int fuzz );
/**
* This method will be fired when the drawable is touched/clicked.
*
* @return
* <code>true</code> if the listener has consumed the event;
* <code>false</code> otherwise.
* */
public abstract boolean onDrawableClick();
/* PUBLIC CLASSES */
/**
* This class can be used to define a listener for a <b>LEFT</b> compound
* drawable.
* */
public static abstract class LeftDrawableClickListener extends DrawableClickListener
{
/* CONSTRUCTORS */
/**
* This will create a new instance of a
* {@link LeftDrawableClickListener} object.
*
* @param view
* The {@link TextView} that this
* {@link LeftDrawableClickListener} is associated with.
*/
public LeftDrawableClickListener( final TextView view )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_LEFT );
}
/**
* This will create a new instance of a
* {@link LeftDrawableClickListener} object.
*
* @param view
* The {@link TextView} that this
* {@link LeftDrawableClickListener} is associated with.
* @param fuzzOverride
* The number of pixels of "fuzz" that should be
* included to account for the size of a finger.
*/
public LeftDrawableClickListener( final TextView view, final int fuzz )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_LEFT, fuzz );
}
/* PUBLIC METHODS */
public boolean isClickOnDrawable( final int x, final int y, final View view, final Rect drawableBounds, final int fuzz )
{
if ( x >= ( view.getPaddingLeft() - fuzz ) )
{
if ( x <= ( view.getPaddingLeft() + drawableBounds.width() + fuzz ) )
{
if ( y >= ( view.getPaddingTop() - fuzz ) )
{
if ( y <= ( view.getHeight() - view.getPaddingBottom() + fuzz ) )
{
return true;
}
}
}
}
return false;
}
}
/**
* This class can be used to define a listener for a <b>TOP</b> compound
* drawable.
* */
public static abstract class TopDrawableClickListener extends DrawableClickListener
{
/* CONSTRUCTORS */
/**
* This will create a new instance of a {@link TopDrawableClickListener}
* object.
*
* @param view
* The {@link TextView} that this
* {@link TopDrawableClickListener} is associated with.
*/
public TopDrawableClickListener( final TextView view )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_TOP );
}
/**
* This will create a new instance of a {@link TopDrawableClickListener}
* object.
*
* @param view
* The {@link TextView} that this
* {@link TopDrawableClickListener} is associated with.
* @param fuzzOverride
* The number of pixels of "fuzz" that should be
* included to account for the size of a finger.
*/
public TopDrawableClickListener( final TextView view, final int fuzz )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_TOP, fuzz );
}
/* PUBLIC METHODS */
public boolean isClickOnDrawable( final int x, final int y, final View view, final Rect drawableBounds, final int fuzz )
{
if ( x >= ( view.getPaddingLeft() - fuzz ) )
{
if ( x <= ( view.getWidth() - view.getPaddingRight() + fuzz ) )
{
if ( y >= ( view.getPaddingTop() - fuzz ) )
{
if ( y <= ( view.getPaddingTop() + drawableBounds.height() + fuzz ) )
{
return true;
}
}
}
}
return false;
}
}
/**
* This class can be used to define a listener for a <b>RIGHT</b> compound
* drawable.
* */
public static abstract class RightDrawableClickListener extends DrawableClickListener
{
/* CONSTRUCTORS */
/**
* This will create a new instance of a
* {@link RightDrawableClickListener} object.
*
* @param view
* The {@link TextView} that this
* {@link RightDrawableClickListener} is associated with.
*/
public RightDrawableClickListener( final TextView view )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_RIGHT );
}
/**
* This will create a new instance of a
* {@link RightDrawableClickListener} object.
*
* @param view
* The {@link TextView} that this
* {@link RightDrawableClickListener} is associated with.
* @param fuzzOverride
* The number of pixels of "fuzz" that should be
* included to account for the size of a finger.
*/
public RightDrawableClickListener( final TextView view, final int fuzz )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_RIGHT, fuzz );
}
/* PUBLIC METHODS */
public boolean isClickOnDrawable( final int x, final int y, final View view, final Rect drawableBounds, final int fuzz )
{
if ( x >= ( view.getWidth() - view.getPaddingRight() - drawableBounds.width() - fuzz ) )
{
if ( x <= ( view.getWidth() - view.getPaddingRight() + fuzz ) )
{
if ( y >= ( view.getPaddingTop() - fuzz ) )
{
if ( y <= ( view.getHeight() - view.getPaddingBottom() + fuzz ) )
{
return true;
}
}
}
}
return false;
}
}
/**
* This class can be used to define a listener for a <b>BOTTOM</b> compound
* drawable.
* */
public static abstract class BottomDrawableClickListener extends DrawableClickListener
{
/* CONSTRUCTORS */
/**
* This will create a new instance of a
* {@link BottomDrawableClickListener} object.
*
* @param view
* The {@link TextView} that this
* {@link BottomDrawableClickListener} is associated with.
*/
public BottomDrawableClickListener( final TextView view )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_BOTTOM );
}
/**
* This will create a new instance of a
* {@link BottomDrawableClickListener} object.
*
* @param view
* The {@link TextView} that this
* {@link BottomDrawableClickListener} is associated with.
* @param fuzzOverride
* The number of pixels of "fuzz" that should be
* included to account for the size of a finger.
*/
public BottomDrawableClickListener( final TextView view, final int fuzz )
{
super( view, DrawableClickListener.DRAWABLE_INDEX_BOTTOM, fuzz );
}
/* PUBLIC METHODS */
public boolean isClickOnDrawable( final int x, final int y, final View view, final Rect drawableBounds, final int fuzz )
{
if ( x >= ( view.getPaddingLeft() - fuzz ) )
{
if ( x <= ( view.getWidth() - view.getPaddingRight() + fuzz ) )
{
if ( y >= ( view.getHeight() - view.getPaddingBottom() - drawableBounds.height() - fuzz ) )
{
if ( y <= ( view.getHeight() - view.getPaddingBottom() + fuzz ) )
{
return true;
}
}
}
}
return false;
}
}
}
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;
}
});
