我最近开始将Android应用程序移至Flutter。我喜欢Flutter应用的编码方式。 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应用程序在拥有所有权的设备上运行,并且是设备所有者。通过以下方法可以实现锁定:
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 so that it is started
// on reboot
mDevicePolicyManager.addPersistentPreferredActivity(
mAdminName, intentFilter, new ComponentName(
getPackageName(), MainActivity.class.getName()));
} else {
mDevicePolicyManager.clearPackagePersistentPreferredActivities(
mAdminName, getPackageName());
}
}
private void setUserRestriction(String restriction, boolean disallow) {
if (disallow) {
mDevicePolicyManager.addUserRestriction(mAdminName,
restriction);
} else {
mDevicePolicyManager.clearUserRestriction(mAdminName,
restriction);
}
}
private void enableStayOnWhilePluggedIn(boolean enabled) {
if (enabled) {
mDevicePolicyManager.setGlobalSetting(
mAdminName,
Settings.Global.STAY_ON_WHILE_PLUGGED_IN,
Battery_PLUGGED_ANY);
} else {
mDevicePolicyManager.setGlobalSetting(
mAdminName,
Settings.Global.STAY_ON_WHILE_PLUGGED_IN, DONT_STAY_ON);
}
}
在MainActivitys onCreate函数中,调用setDefaultCosuPolicies(true)。我将这些功能复制到flutter应用程序中。添加了AdminReceiver并在AndroidManifest中配置了所有内容。第一次尝试没有用,因此我尝试通过MethodChannel调用setDefaultCosuPolicies函数。这也行不通。
有人知道如何激活信息亭功能吗?
预先感谢