定时通知(Notification)刷新实现SurfaceView双缓冲机制

 看了些例子,也就简单些了些东西,希望能供给相关朋友做相关的参考,还是一样直接贴源码吧：

主类:

package com.jsd.demo;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.jsd.demo.service.ServiceDemo;

/**
 *
 * @author jiangshide
 *
 */
public class DemoNoti extends Activity{

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.noti);
  findViewById();
 }
 private int id = 1223171712;
 private NotificationManager nm;
 
 private void findViewById(){
  Button button = (Button) findViewById(R.id.button);
  button.setOnClickListener(listener);
  Timer time = new Timer();
  time.schedule(new TimerTask() {
   @Override
   public void run() {
    startService(new Intent(DemoNoti.this,ServiceDemo.class));
    System.out.println("run => server");
//    showNotifaction(R.drawable.canshu_6,"clear user!","The Clear User!","This is for clear current user that you operation to app,pelease you relogin for it!");
   }
  }, 0);
 }
 
 private OnClickListener listener = new OnClickListener() {
  @Override
  public void onClick(View v) {
   startService(new Intent(DemoNoti.this,ServiceDemo.class));
   System.out.println("onClick run => server");
  }
 };
 
 private void showNotifaction(int icon,String tic,String title,String content){
  Notification noti = new Notification(icon, tic,System.currentTimeMillis());
  noti.defaults = Notification.DEFAULT_ALL;
  PendingIntent intent = PendingIntent.getActivity(this, 0,new Intent(this,MainActivity.class),0);
  noti.setLatestEventInfo(this, title, content, intent);
  nm.notify(id, noti);
  System.out.println("notification....");
 }
}

 

服务类:

package com.jsd.demo.service;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

import com.jsd.demo.MainActivity;
import com.jsd.demo.R;

/**
 *
 * @author jiangshide
 *
 */
public class ServiceDemo extends Service{

 int notification_id=19172439;
 NotificationManager nm;
 
 @Override
 public IBinder onBind(Intent intent) {
  return null;
 }
 
 @Override
 public void onStart(Intent intent, int startId) {
  nm=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
  showNotification(R.drawable.canshu_3,"clear user!","The Clear User!","This is for clear current user that you operation to app,pelease you relogin for it!");
 }
 
 private void showNotification(int icon,String tic,String title,String content){
  Notification noti = new Notification(icon, tic,System.currentTimeMillis());
  noti.defaults = Notification.DEFAULT_ALL;
  PendingIntent intent = PendingIntent.getActivity(this, 0,new Intent(this,MainActivity.class),0);
  noti.setLatestEventInfo(this, title, content, intent);
  nm.notify(notification_id, noti);
  System.out.println("notification....");
 }
}

 

SurfaceView实现类:

package com.jsd.demo;

import java.lang.reflect.Field;
import java.util.ArrayList;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;

/**
 *
 * @author jiangshide
 *
 */
public class MainActivity extends Activity {
 Button btnSingleThread, btnDoubleThread;
     SurfaceView sfv;
     SurfaceHolder sfh;
     ArrayList<Integer> imgList = new ArrayList<Integer>();
     int imgWidth, imgHeight;
     Bitmap bitmap;
  
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         findViewById();
     }

  private void findViewById() {
   btnSingleThread = (Button) this.findViewById(R.id.Button01);
         btnDoubleThread = (Button) this.findViewById(R.id.Button02);
         btnSingleThread.setOnClickListener(new ClickEvent());
         btnDoubleThread.setOnClickListener(new ClickEvent());
         sfv = (SurfaceView) this.findViewById(R.id.SurfaceView01);
         sfh = sfv.getHolder();
         sfh.addCallback(new MyCallBack());// 自动运行surfaceCreated以及surfaceChanged
  }
     class ClickEvent implements View.OnClickListener {
         @Override
         public void onClick(View v) {
             if (v == btnSingleThread) {
                 new Load_DrawImage(0, 0).start();//开一条线程读取并绘图
             } else if (v == btnDoubleThread) {
                 new LoadImage().start();//开一条线程读取
                 new DrawImage(imgWidth + 10, 0).start();//开一条线程绘图
             }
         }
     }
     class MyCallBack implements SurfaceHolder.Callback {
         @Override
         public void surfaceChanged(SurfaceHolder holder, int format, int width,
                 int height) {
             Log.i("Surface:", "Change");
         }
         @Override
         public void surfaceCreated(SurfaceHolder holder) {
             Log.i("Surface:", "Create");
             // 用反射机制来获取资源中的图片ID和尺寸
             Field[] fields = R.drawable.class.getDeclaredFields();
             for (Field field : fields) {
                 if (!"icon".equals(field.getName()))// 除了icon之外的图片
                 {
                     int index = 0;
                     try {
                         index = field.getInt(R.drawable.class);
                     } catch (IllegalArgumentException e) {
                         // TODO Auto-generated catch block
                         e.printStackTrace();
                     } catch (IllegalAccessException e) {
                         // TODO Auto-generated catch block
                         e.printStackTrace();
                     }
                     // 保存图片ID
                     imgList.add(index);
                 }
             }
             // 取得图像大小
             Bitmap bmImg = BitmapFactory.decodeResource(getResources(),
                     imgList.get(0));
             imgWidth = bmImg.getWidth();
             imgHeight = bmImg.getHeight();
         }
         @Override
         public void surfaceDestroyed(SurfaceHolder holder) {
             Log.i("Surface:", "Destroy");
         }
     }
     /**
      * 读取并显示图片的线程
      */
     class Load_DrawImage extends Thread {
         int x, y;
         int imgIndex = 0;
  
         public Load_DrawImage(int x, int y) {
             this.x = x;
             this.y = y;
         }
  
         public void run() {
             while (true) {
                 Canvas c = sfh.lockCanvas(new Rect(this.x, this.y, this.x
                         + imgWidth, this.y + imgHeight));
                 Bitmap bmImg = BitmapFactory.decodeResource(getResources(),
                         imgList.get(imgIndex));
                 c.drawBitmap(bmImg, this.x, this.y, new Paint());
                 imgIndex++;
                 if (imgIndex == imgList.size())
                     imgIndex = 0;
  
                 sfh.unlockCanvasAndPost(c);// 更新屏幕显示内容
             }
         }
     };
  
     /**
      * 只负责绘图的线程
      */
     class DrawImage extends Thread {
         int x, y;
  
         public DrawImage(int x, int y) {
             this.x = x;
             this.y = y;
         }
  
         public void run() {
             while (true) {
                 if (bitmap != null) {//如果图像有效
                     Canvas c = sfh.lockCanvas(new Rect(this.x, this.y, this.x
                             + imgWidth, this.y + imgHeight));
  
                     c.drawBitmap(bitmap, this.x, this.y, new Paint());
  
                     sfh.unlockCanvasAndPost(c);// 更新屏幕显示内容
                 }
             }
         }
     };
  
     /**
      * 只负责读取图片的线程
      */
     class LoadImage extends Thread {
         int imgIndex = 0;
  
         public void run() {
             while (true) {
                 bitmap = BitmapFactory.decodeResource(getResources(),
                         imgList.get(imgIndex));
                 imgIndex++;
                 if (imgIndex == imgList.size())//如果到尽头则重新读取
                     imgIndex = 0;
             }
         }
     };

}

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent" android:layout_height="fill_parent"
 android:orientation="vertical">
 <LinearLayout android:id="@+id/LinearLayout1"
  android:layout_width="wrap_content" android:layout_height="wrap_content">
  <Button android:id="@+id/Button01" android:layout_width="wrap_content"
   android:layout_height="wrap_content" android:text="单个独立线程"></Button>
  <Button android:id="@+id/Button02" android:layout_width="wrap_content"
   android:layout_height="wrap_content" android:text="两个独立线程"></Button>
 </LinearLayout>
 <SurfaceView android:id="@+id/SurfaceView01"
  android:layout_width="fill_parent" android:layout_height="fill_parent">
 </SurfaceView>
</LinearLayout>

 

noti.xml: 就一个BUTTON

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"
  >
  <Button
  android:id="@+id/button"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="notification" 
  />
</LinearLayout>

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.jsd.demo"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name">
           
        </activity>
  <activity android:name=".DemoNoti">
  </activity>
  <activity android:name=".DemoNoti">
   <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
  </activity>
  <service android:enabled="true" android:name=".service.ServiceDemo"/>
    </application>
    <uses-permission android:name="android.permission.VIBRATE" />
</manifest>

 

OK,以上就实现的全部代码,可以直接CP后使用.....

直接启动通知,与点击按钮通知后打开通知点击其通知内容你可以进入下个ACTIV ITY然后测试SURFACEVIEW单线程与双线程所存在的区别:

看图: