キオスク モード用に別のアクティビティを作成しました
主なアイデアは、このタスクを他のアクティビティから配信し、ロック タスクを常にスタックのルートに保持することです。
View.post(...)魔法の遅延と同様に、私には機能しません
onResume()チェック付きのメソッドはisFinishing()正常に動作しますが、クリアタスクフラグには注意してください
<style name="AppTheme.Transparent" parent="android:style/Theme.Translucent.NoTitleBar.Fullscreen">
<item name="android:colorPrimary">@color/colorPrimary</item>
<item name="android:colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="android:colorAccent">@color/colorAccent</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsFloating">true</item>
<item name="android:backgroundDimEnabled">false</item>
</style>
class LockActivity : Activity() {
private lateinit var adminManager: AdminManager
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
adminManager = AdminManager(applicationContext)
}
override fun onStart() {
super.onStart()
when (activityManager.lockTaskModeState) {
ActivityManager.LOCK_TASK_MODE_NONE -> {
if (true/*IT IS NEEDED*/) {
if (adminManager.setKioskMode(true)) {
// need startLockTask on resume
return
} else {
//toast("HAVE NO OWNER RIGHTS")
}
}
launchActivity()
finish()
}
ActivityManager.LOCK_TASK_MODE_LOCKED -> {
if (false/*IT IS NOT NEEDED*/) {
if (adminManager.setKioskMode(false)) {
stopLockTask()
launchActivity()
finish()
return
} else {
//toast("HAVE NO OWNER RIGHTS")
}
}
launchActivity()
}
else -> finishAffinity()
}
}
override fun onResume() {
super.onResume()
if (!isFinishing) {
if (activityManager.lockTaskModeState == ActivityManager.LOCK_TASK_MODE_NONE) {
startLockTask()
launchActivity()
}
}
}
private fun launchActivity() {
// todo startActivity depending on business logic
}
override fun onBackPressed() {}
}
class AdminManager(context: Context) {
private val adminComponent = ComponentName(context, AdminReceiver::class.java)
private val deviceManager = context.devicePolicyManager
private val packageName = context.packageName
@Suppress("unused")
val isAdmin: Boolean
get() = deviceManager.isAdminActive(adminComponent)
val isDeviceOwner: Boolean
get() = deviceManager.isDeviceOwnerApp(packageName)
fun setKioskMode(enable: Boolean): Boolean {
if (isDeviceOwner) {
setRestrictions(enable)
deviceManager.setKeyguardDisabled(adminComponent, enable)
setLockTask(enable)
return true
}
return false
}
/**
* @throws SecurityException if {@code admin} is not a device or profile owner.
*/
private fun setRestrictions(enable: Boolean) {
arrayOf(
UserManager.DISALLOW_FACTORY_RESET,
UserManager.DISALLOW_SAFE_BOOT,
UserManager.DISALLOW_ADD_USER
).forEach {
if (enable) {
deviceManager.addUserRestriction(adminComponent, it)
} else {
deviceManager.clearUserRestriction(adminComponent, it)
}
}
}
/**
* @throws SecurityException if {@code admin} is not the device owner, the profile owner of an
* affiliated user or profile, or the profile owner when no device owner is set.
*/
private fun setLockTask(enable: Boolean) {
if (enable) {
deviceManager.setLockTaskPackages(adminComponent, arrayOf(packageName))
} else {
deviceManager.setLockTaskPackages(adminComponent, arrayOf())
}
}
}