android:卸载app时需要密码

时间:2014-07-28 12:45:46

标签: android authentication passwords uninstall

我想构建类似家长控制的应用,所以当孩子尝试卸载/删除我的应用时,我想要求用户在允许卸载/删除我的应用之前键入密码。

我试试这个,但仍然不明白:
Require a password to uninstall/remove application

有什么建议吗?

1 个答案:

答案 0 :(得分:4)

如果使用设备管理,则可以锁定设备。用户无法卸载活动设备管理员,然后您可以在设备尝试禁用设备管理员时锁定设备,然后父母可以输入密码来解锁设备。

在你的清单中:

  <receiver android:name=".AdminReceiver"
        android:label="Administration"
        android:description="@string/descript"
        android:permission="android.permission.BIND_DEVICE_ADMIN">
            <meta-data android:name="android.app.device_admin"
                       android:resource="@xml/deviceadmin" />
            <intent-filter>
                <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
            </intent-filter>
        </receiver>

然后在@xml/deviceadmin

<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
  <uses-policies>
    <reset-password />
    <force-lock />
  </uses-policies>
</device-admin>

然后

public class AdminReceiver extends DeviceAdminReceiver {
@Override
        public CharSequence onDisableRequested(final Context context, Intent intent) {

            Intent startMain = new Intent(Intent.ACTION_MAIN);
            startMain.addCategory(Intent.CATEGORY_HOME);
            startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(startMain); //switch to the home screen, not totally necessary
            lockPhone(context, secPassword);
            //Log.i(TAG, "DEVICE ADMINISTRATION DISABLE REQUESTED & LOCKED PHONE");

            return "haha. i locked your phone.";
        }
    public static boolean lockPhone(Context context, String password){
        devAdminReceiver = new ComponentName(context, AdminReceiver.class);
        dpm = (DevicePolicyManager)context.getSystemService(Context.DEVICE_POLICY_SERVICE);
        boolean pwChange = dpm.resetPassword(password, 0);
        dpm.lockNow();
        return pwChange;
    }   
}

要以设备管理员身份启用您的应用:

devAdminReceiver = new ComponentName(context, AdminReceiver.class);
        dpm = (DevicePolicyManager)context.getSystemService(Context.DEVICE_POLICY_SERVICE);
        pref = PreferenceManager.getDefaultSharedPreferences(context);
        dpm.isAdminActive(devAdminReceiver);