<!-- 杀死后台进程-->
    <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>


 public static void killProcess(ProcessInfo processInfo,Context context) {
         //1  进程在activity管理者对象中
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        // 杀死指定包名的进程（加权限）
        am.killBackgroundProcesses(processInfo.packageName);
    }