Intent intent = new Intent("com.example.fingureprint.services.JudgeFingureService");
    intent.setPackage(getPackageName());
    startService(intent);

 <!--注册判断指纹密码开启的服务-->
    <service 
      android:name="com.example.fingureprint.services.JudgeFingureService"
      android:enabled="true">
      <intent-filter >
        <action android:name="com.example.fingureprint.services.JudgeFingureService"/>
      </intent-filter>
    </service>

new Thread(){
      public void run() {
        try {
          while(true){
          Thread.sleep(1000);
          if(isAppOnForeground()){
            Log.i("前台运行", "time"+countnumber);
            if(countnumber>30){
              if(!"com.example.fingureprint.FingureAriseActivity".equals(listActivity())){
                Intent myintent = new Intent();
                myintent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                myintent.setClass(getApplicationContext(),FingureAriseActivity.class);
                startActivity(myintent);
              }
              countnumber = 0;
            }else{
              countnumber = 0;
            }
          }else{
            Log.i("后台运行", "time"+countnumber);
            countnumber ++;
          }
          }
          
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      };
      
    }.start();

  /**
   * 判断程序在前台运行的方法
   * @return
   */
  public boolean isAppOnForeground() {
    ActivityManager systemService = (ActivityManager) this.getSystemService(Context.ACTIVITY_SERVICE);
    List<RunningAppProcessInfo> runningAppProcesses = systemService.getRunningAppProcesses();
    if(runningAppProcesses==null) return false;
    for(RunningAppProcessInfo processes: runningAppProcesses){
      if(processes.processName.equals("com.example.fingureprint")&&processes.importance==RunningAppProcessInfo.IMPORTANCE_FOREGROUND){
        return true;
      }
    }
    return false;
  }

  /**
   * 判断当前运行在前台的Activity
   */
  @SuppressWarnings("deprecation")
  public String listActivity(){
    ActivityManager systemService = (ActivityManager) this.getSystemService(Context.ACTIVITY_SERVICE);
    List<RunningTaskInfo> runningTasks = systemService.getRunningTasks(1);
    RunningTaskInfo runningTaskInfo = runningTasks.get(0);
    ComponentName component = runningTaskInfo.topActivity;
    String className = component.getClassName();
    return className;
  }

<uses-permission android:name="android.permission.USE_FINGERPRINT"/>