android 完全关闭进程

        ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
              activityManager.killBackgroundProcesses(getPackageName());   //关闭了所有Activity

             
              Intent startMain = new Intent(Intent.ACTION_MAIN); 

              startMain.addCategory(Intent.CATEGORY_HOME); 
              startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
              startActivity(startMain);

在AndroidManifest.xml 加上

<!-- 关闭进程 -->
 <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>