<!-- 系统权限，强行停止一个应用 -->
    <uses-permission android:name="android.permission.FORCE_STOP_PACKAGES" />

/**
     * 强行停止一个应用
     * 
     * @param pkgName
     */
    private void forceStopPackage(String pkgName) {
        ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
        Method method;
        try {
            method = Class.forName("android.app.ActivityManager").getMethod(
                    "forceStopPackage", String.class);
            method.invoke(am, pkgName);
        } catch (Exception e) {
            Log.e("MainActivity", "Exception when forcing stop app:" + pkgName);
        }
    }