小编Nic*_*ger的帖子

我最近开始将一个 Android 应用程序迁移到 Flutter。我喜欢 Flutter Apps 的编码方式。2 天后，Flutter 应用程序具有与 Android 应用程序相同的功能。唯一缺少的功能是锁定。Android 应用程序在合作伙伴拥有的设备上运行并且是设备所有者。锁定是通过以下方法实现的：

    private void setDefaultCosuPolicies(boolean active) {
    // set user restrictions
    setUserRestriction(UserManager.DISALLOW_SAFE_BOOT, active);
    setUserRestriction(UserManager.DISALLOW_FACTORY_RESET, active);
    setUserRestriction(UserManager.DISALLOW_ADD_USER, active);
    setUserRestriction(UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA, active);
    setUserRestriction(UserManager.DISALLOW_ADJUST_VOLUME, active);

    // disable keyguard and status bar
    mDevicePolicyManager.setKeyguardDisabled(mAdminName, active);
    mDevicePolicyManager.setStatusBarDisabled(mAdminName, active);

    // enable STAY_ON_WHILE_PLUGGED_IN
    enableStayOnWhilePluggedIn(false);

    // set this Activity as a lock task package

    mDevicePolicyManager.setLockTaskPackages(mAdminName,
            active ? new String[]{getPackageName()} : new String[]{});

    IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MAIN);
    intentFilter.addCategory(Intent.CATEGORY_HOME);
    intentFilter.addCategory(Intent.CATEGORY_DEFAULT);

    if (active) {
      // set Cosu activity as home intent receiver …