icon上添加数字提醒

使用viewbadger包:

 package com.jingle.vierbagerstudy;

 import android.app.Activity;
 import android.os.Bundle;
 import android.widget.ImageView;

 import com.readystatesoftware.viewbadger.BadgeView;

 public class MainActivity extends Activity {

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         initImg();
     }

     private void initImg() {
         ImageView img = (ImageView) findViewById(R.id.img);
         img.setImageResource(R.drawable.ic_launcher);

         //使用image,context初始化badgeView
         BadgeView badge = new BadgeView(this, img);
         badge.setText("ok");//设置显示的数字
         badge.show();//显示badge
　　　　　　//badge.hide()//隐藏badge
     }
 }