显示状态栏通知

AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.skex.notificationiconcount"
     android:versionCode="1"
     android:versionName="1.0" >    <uses-sdk
         android:minSdkVersion="8"
         android:targetSdkVersion="19" />    <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity
             android:name="com.skex.notificationiconcount.MainActivity"
             android:label="@string/app_name" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
     </application></manifest>

activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/LinearLayout1"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context="com.skex.notificationiconcount.MainActivity$PlaceholderFragment" >    <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/hello_world" />    <ImageView
         android:id="@+id/icon"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:adjustViewBounds="true"
         android:scaleType="center" /></LinearLayout>

notification.xml
<?xml version="1.0" encoding="utf-8"?>  
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
               android:orientation="horizontal"  
               android:layout_width="fill_parent"  
               android:layout_height="fill_parent"  
               android:padding="3dp"  
               >  
     <ImageView android:id="@+id/image"  
               android:layout_width="wrap_content"  
                android:layout_height="fill_parent"  
                android:layout_marginRight="10dp"  
                />  
      <TextView android:id="@+id/text"  
                android:layout_width="wrap_content"  
                android:layout_height="fill_parent"  
                android:textColor="#000"  
                />  
 </LinearLayout>  
MainActivity.java
package com.skex.notificationiconcount;
import android.support.v7.app.ActionBarActivity;
 import android.support.v7.app.ActionBar;
 import android.support.v4.app.Fragment;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.graphics.Typeface;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.RemoteViews;
 import android.os.Build;public class MainActivity extends ActionBarActivity {
 private static final String TAG = "Main";
  private ImageView mImageView;
  private NotificationManager nm;
  private int NOTIFICATION_CONTACT_ID=111; @Override
  protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   
   mImageView=(ImageView)findViewById(R.id.icon); 
   Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
   //mImageView.setImageBitmap(bitmap);
   //boolean a=true;
   //if(a)
   //return;
   
   //Bitmap icon;
   //icon=getResIcon(getResources(), R.id.icon);
   //mImageView.setImageBitmap(icon);
   //mImageView.setImageBitmap(generatorContactCountIcon(icon));
   //mImageView.setImageBitmap(generatorContactCountIcon(bitmap));
   Bitmap contactCountIcon=generatorContactCountIcon(bitmap);
   nm=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
   showNotifacation(contactCountIcon);  
   
  }
  
  /** 
    * 显示状态栏通知 
    * @param icon 通知内容图标
    */ 
  private void showNotifacation(Bitmap icon){  
     //drawable\vvv.png
       Notification notification=new  Notification(R.drawable.vvv,"联系人数量",System.currentTimeMillis());  
       //使用RemoteView自定义通知视图  
       RemoteViews contentView=new RemoteViews(getPackageName(), R.layout.notification);  
       contentView.setImageViewBitmap(R.id.image, icon);  
       contentView.setTextViewText(R.id.text, "图标上的红色数字表示手机中联系人的数量");  
       notification.contentView=contentView;  
       Intent notificationIntent=new Intent(this, MainActivity.class);  
       PendingIntent contentIntent=PendingIntent.getActivity(this, 0, notificationIntent, 0);  
       notification.contentIntent=contentIntent;  
       nm.notify(NOTIFICATION_CONTACT_ID, notification);  
  }   @Override
  protected void onDestroy() {  
      super.onDestroy();  
      nm.cancel(NOTIFICATION_CONTACT_ID);  
     }      /** 
      * 根据id获取一个图片 
      * @param res 
      * @param resId 
      * @return 
      */  
     //private Bitmap getResIcon(Resources res,int resId){  
     // Drawable icon=res.getDrawable(resId);  
     // if(icon instanceof BitmapDrawable){  
     //     BitmapDrawable bd=(BitmapDrawable)icon;  
     //     return bd.getBitmap();  
     // }else{  
     //     return null;  
     // }  
     // }
     
     /** 
       * 获取联系人的个数 
       * @return 手里通讯录中联系人的个数 
       */  
      private int getContactCount(){
              return 9;   
      }     /*
       * 在给定的图片的右上角加上联系人数量。数量用红色表示 
       * @param icon 给定的图片 
       * @return 带联系人数量的图片 
       */  
      private Bitmap generatorContactCountIcon(Bitmap icon){  
          //初始化画布  
          int iconSize=(int)getResources().getDimension(android.R.dimen.app_icon_size);  
          Log.d(TAG, "the icon size is "+iconSize);  
          Bitmap contactIcon=Bitmap.createBitmap(iconSize, iconSize, Config.ARGB_8888);  
          Canvas canvas=new Canvas(contactIcon);  
          //拷贝图片  
          Paint iconPaint=new Paint();
          iconPaint.setDither(true);//防抖动
          iconPaint.setFilterBitmap(true);//用来对Bitmap进行滤波处理，这样，当你选择Drawable时，会有抗锯齿的效果  
          Rect src=new Rect(0, 0, icon.getWidth(), icon.getHeight());  
          Rect dst=new Rect(0, 0, iconSize, iconSize);  
          canvas.drawBitmap(icon, src, dst, iconPaint);  
          //在图片上创建一个覆盖的联系人个数  
          int contacyCount=getContactCount();  
          //启用抗锯齿和使用设备的文本字距  
          Paint countPaint=new Paint(Paint.ANTI_ALIAS_FLAG|Paint.DEV_KERN_TEXT_FLAG);  
          countPaint.setColor(Color.RED);  
          countPaint.setTextSize(20f);  
          countPaint.setTypeface(Typeface.DEFAULT_BOLD);  
          canvas.drawText(String.valueOf(contacyCount), iconSize-18, 25, countPaint);  
          return contactIcon;  
      } 
      
      
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {  // Inflate the menu; this adds items to the action bar if it is present.
   getMenuInflater().inflate(R.menu.main, menu);
   return true;
  } @Override
  public boolean onOptionsItemSelected(MenuItem item) {
   // Handle action bar item clicks here. The action bar will
   // automatically handle clicks on the Home/Up button, so long
   // as you specify a parent activity in AndroidManifest.xml.
   int id = item.getItemId();
   if (id == R.id.action_settings) {
    return true;
   }
   return super.onOptionsItemSelected(item);
  }
}