Android 多个ImageView图片层叠透明区域点击事件穿透

               

经常用到多个透明图片层叠，但又需要获取不同图片的点击事件，本文实现图片透明区域穿透点击事件。

效果图：

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一、先上图片，这2张图片尺寸是一样的，放到drawable目录下：

图1：transparent.png

 

图2：transparent2.png

 

二、上布局文件，test.xml：

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="fill_parent"   android:layout_height="fill_parent"   android:orientation="vertical"   android:gravity="center"   android:id="@+id/mainLayout">       <ImageView android:id="@+id/ImageView01"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/transparent"/>        <ImageView android:id="@+id/ImageView02"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/transparent2"/>        </FrameLayout>

 

三、上Activity文件，MainActivity.java

 

package org.shuxiang.test;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.view.Window;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.widget.ImageView;public class MainActivity extends Activity{ private ImageView iv1; private ImageView iv2; private Bitmap bitmap1, bitmap2; private boolean iv1Transparent = false; private boolean iv2Transparent = false;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.test);        iv1 = (ImageView) findViewById(R.id.ImageView01);        iv2 = (ImageView) findViewById(R.id.ImageView02);        bitmap1 = ((BitmapDrawable) (iv1.getDrawable())).getBitmap();        bitmap2 = ((BitmapDrawable) (iv2.getDrawable())).getBitmap();                iv1.setOnClickListener(new OnClickListener(){   @Override   public void onClick(View v) {    // TODO Auto-generated method stub    if(iv1Transparent)    {     Log.i("test", "图1透明区域");    }    else    {     Log.i("test", "图1点击");         }   }                 });                iv1.setOnTouchListener(new OnTouchListener()        {   @Override   public boolean onTouch(View arg0, MotionEvent arg1)    {    // TODO Auto-generated method stub    if(bitmap1.getPixel((int)(arg1.getX()),((int)arg1.getY()))==0)    {     Log.i("test", "图1透明区域");     iv1Transparent = true; //透明区域设置true         }    else    {     Log.i("test", "图1实体区域");     iv1Transparent = false;    }    return false;   }                 });                iv2.setOnClickListener(new OnClickListener()        {   @Override   public void onClick(View v) {    // TODO Auto-generated method stub    if(iv2Transparent)    {     Log.i("test", "图2透明区域");    }    else    {     Log.i("test", "图2点击");         }   }                 });                iv2.setOnTouchListener(new OnTouchListener()        {   @Override   public boolean onTouch(View v, MotionEvent event) {    // TODO Auto-generated method stub    if(bitmap2.getPixel((int)(event.getX()),((int)event.getY()))==0)    {     Log.i("test", "图2透明区域");     iv2Transparent = true; //透明区域设置true     iv1.dispatchTouchEvent(event);    }    else    {     Log.i("test", "图2实体区域");     iv2Transparent = false;    }    return false;   }        });    }}