I have implemented a scheduled notification in flutter. By default it's using Ring Volume, I want to use Alarm Volume instead of Ring Volume. So How to implement Alarm Volume in flutter_local_notification?
Here is what documentation says that may help.
For Android 8.0+, sounds and vibrations are associated with notification channels and can only be configured when they are first created. Showing/scheduling a notification will create a channel with the specified id if it doesn't exist already. If another notification specifies the same channel id but tries to specify another sound or vibration pattern then nothing occurs.
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I'm using flutter local notification plugin and I want the user to be able to customize the notification sound and vibration but the plugin's docs says:
For Android 8.0+, sounds and vibrations are associated with
notification channels and can only be configured when they are first
created. Showing/scheduling a notification will create a channel with
the specified id if it doesn't exist already. If another notification
specifies the same channel id but tries to specify another sound or
vibration pattern then nothing occurs.
so I looked up for deleting the channel just to create a new one with the new settings and the docs says that it's a feature in android but I couldn't find any reference on how to do that.
is there's a way to do that, or is there's any another solution?
thanks in advance.
I didn't find an answer or solution about deleting channels, but I tried making a channel for every sound just by using the sound name as an id for the channel, and it worked :).
I have an idea for a unique alarm application on the iPhone. But at the moment the only way I can see of initiating the alarm is by leaving the app running all night getting it to poll for the current time. Is there anyway to make an app "wake up" or initiate at a certain time. I know I can use push or local notifications but they require user input before loading my app. Thinking about it I could leave my app on all night, but literally doing nothing (saving battery if not being charged) and then subscribe to a local notification for the alarm itself.
Alternatively, can I make the iPhone run my app when an alarm sounds so I don't have to deal with alarm settings at all?
No, your only option is to use either Local or Push notifications.
I think using event kit framework add event in default iPhone calender.
I've recently downloaded an app that uses the 'Volume -' button to toggle a value, and it uses the 'Volume +' button to start/stop recording of video. The app is called SloPro, and can be found in the app store. I thought it wasn't allowed to modify the behaviour of the iPhone's hardware. Any ideas on how this is done?
See the Audio Session Services References for more details, but basically you start an audio session with AudioSessionInitialize. Then you make it active with AudioSessionSetActive. Then listen for changes in the volume with AudioSessionAddPropertyListener where you can pass a callback that has type AudioSessionPropertyListener.
Check the following website out for an example:
http://fredandrandall.com/blog/2011/11/18/taking-control-of-the-volume-buttons-on-ios-like-camera/
i have to play a sound when an uibutton is clicked. My problem is that when device is with volume down, so user pull down volume in hw way, my sound will have volume down. Is there a possibility to have my sound with max volume though volume is down? I hope my answer is well formed
Whether this is possible or not, it would be a very bad practice. Apps should always respect user's choice, including volume. Think of a user that's using your app in a very quite environment (e.g. hospital, airplane, etc.), so the user turns the volume down - yet your app still makes loud noises. I'm guessing this would rather alienate the user.
My guess is that normally it's not possible though. Have a look at this article: http://developer.apple.com/library/ios/#codinghowtos/AudioAndVideo/_index.html - specifically, look for How do I control playback level? topic.
On iOS you can configure the audio session parameters but there are behaviours that the system will not let you change (when the user receives a call or silences the device for example). The system will send you notifications so you can react gracefully but as others have said, when users silence their device it should be silent, no matter what the developpers want (especially with tons of apps running in the background...).
I have an iphone app that has a 30second process that does some network IO. Basically, while the app is in the background, i want this process to run every hour (actually once a day, but if it fails i want it to re-run in an hours time).
With the background features of ios 4, is this possible? If so, how? What are the limitations that i'll come up against?
Thanks so much!
Take a look at Apple's documentation about running code in the background.
http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/BackgroundExecution/BackgroundExecution.html
There are few different ways of approaching backgrounded tasks. The only apps that can have fully backgrounded processes are "audio", "voip" and "location" apps, and this needs to be declared in the Info.plist.
If your app is not of this type, you'll probably find it difficult to do what you want easily. There are methods which allow you to keep your app alive in the background for a finite period of time (also at that link), but eventually your app will be shut down.
Local Notifications will only prompt the user to open the app - do you really want to have an alert pop-up on the phone every 30 seconds?
I was making some kind of similar research, have a look at this SO answer in case you didn't manage to find it before. Applications like DataMan or Data Usage must have some sort of periodic code execution in the background, so I'm not 100% convinced that what you're asking for is impossible..
I believe that Using Local notifications will help....
check following....
http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/IPhoneOSClientImp/IPhoneOSClientImp.html#//apple_ref/doc/uid/TP40008194-CH103-SW1
An application can create and schedule a local notification, and the operating system then delivers it at the schedule date and time. If it delivers it when the application is not active in the foreground, it displays an alert, badges the application icon, or plays a sound—whatever is specified in the UILocalNotification object. If the application is running in the foreground, there is no alert, badging, or sound; instead, the application:didReceiveLocalNotification: method is called if the delegate implements it.
The delegate can inspect the properties of the notification and, if the notification includes custom data in its userInfo dictionary, it can access that data and process it accordingly. On the other hand, if the local notification only badges the application icon, and the user in response launches the application, the application:didFinishLaunchingWithOptions: method is invoked, but no UILocalNotification object is included in the options dictionary.