During normal app use, the foreground activity is sometimes obstructed by other visual components that cause the activity to pause. For example, when a semi-transparent activity opens such as one in the style of a dialogthe previous activity pauses. As long as the activity is still partially visible but currently not the activity in focus, it remains paused.
However, once the activity is fully-obstructed and not visible, it stops which is discussed in the next lesson. As your activity enters the paused state, the system calls the onPause method on your Activitywhich allows you to stop ongoing actions that should not continue while paused such as a video or persist any information that should be permanently saved in case the user continues to leave your app.
If the user returns to your activity from the paused state, the system resumes it and calls the onResume method. Note: When your activity receives a call to onPauseit may be an indication that the activity will be paused for a moment and the user may return focus to your activity.
Understand the Activity Lifecycle
However, it's usually the first indication that the user is leaving your activity. Figure 1.
When a semi-transparent activity obscures your activity, the system calls onPause and the activity waits in the Paused state 1. If the user returns to the activity while it's still paused, the system calls onResume 2. When the system calls onPause for your activity, it technically means your activity is still partially visible, but most often is an indication that the user is leaving the activity and it will soon enter the Stopped state.
You should usually use the onPause callback to:. For example, if your application uses the Camerathe onPause method is a good place to release it. Generally, you should not use onPause to store user changes such as personal information entered into a form to permanent storage. The only time you should persist user changes to permanent storage within onPause is when you're certain users expect the changes to be auto-saved such as when drafting an email. However, you should avoid performing CPU-intensive work during onPausesuch as writing to a database, because it can slow the visible transition to the next activity you should instead perform heavy-load shutdown operations during onStop.
You should keep the amount of operations done in the onPause method relatively simple in order to allow for a speedy transition to the user's next destination if your activity is actually being stopped. Note: When your activity is paused, the Activity instance is kept resident in memory and is recalled when the activity resumes. When the user resumes your activity from the Paused state, the system calls the onResume method.
Be aware that the system calls this method every time your activity comes into the foreground, including when it's created for the first time. As such, you should implement onResume to initialize components that you release during onPause and perform any other initializations that must occur each time the activity enters the Resumed state such as begin animations and initialize components only used while the activity has user focus.
The following example of onResume is the counterpart to the onPause example above, so it initializes the camera that's released when the activity pauses. Quicknav Quicknav. Results Loading Building Your First App. Managing the Activity Lifecycle. Supporting Different Devices. Building a Dynamic UI with Fragments. Saving Data. Interacting with Other Apps. Sharing Content.
So the user might be using a completely different app and the phone would still vibrate. Is there a way to detect that the app is in the background, or better yet, freeze the app somehow when it's going to the background?
You can simply bind the pause event and you remove the shake feature from your app. According to the documentation The pause event fires when an application is put into the background.
You can listen for the resume event to put back the shake feature. As usual in the documentation you can find complete code examples. Learn more. Cordova - detect that app is in the background Ask Question.
Asked 6 years ago. Active 3 years, 10 months ago. Viewed 7k times. I have this problem on Android haven't tested it on iOS yet. Kailas 5, 2 2 gold badges 34 34 silver badges 57 57 bronze badges. But try that that first.
Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system. It only takes a minute to sign up. Sometimes when I download apps from the marketthe download gets paused. After the download gets paused, I am unable to continue the download.
But after the restart my device and then retry downloading, it works fine. What could be the reason behind this? It happens generally when Kernel discards Market from memory. In Android, there're many ways to achieve multi-tasking. Market app achieves it by running its service in background. This way Market app isn't killed. But, when kernel runs out of memory, it has no other choices. It kills other apps even having running service to reclaim memory, otherwise device would be crashed.
So, to prevent it lower down running app load from system. Simply uninstall all unwanted always-running apps. Plus, Market might have memory leaks etc. So, its better to contact Android support if previous step doesn't help. They really respond don't think its Google. This very much depends on your device and your version of Android. As a temporary remedy you could try and force a stop of the market application instead of having to reboot your device manually every time.
Pressing menu - settings - applications - manage applications - all - market - force stop should close the market and restart the download when you retry. I had this same exact problem. They start, they pause, they quit, and you have to try again. The solution for me, albeit a little overboard, was to flash a new ROM.
This was not the only reason, and i noticed this download issue only happened after my device got pretty bogged down not much internal storage leftbut regardless of the reasons, reflashing took care of the problem.
I just figured it out, just go to the download manager from settings-apps and turn of notification and again turn on notification that's all, it work or me.
Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Why does Android download pause, and only continue after restart?
Ask Question. Asked 8 years, 10 months ago. Active 3 years, 11 months ago. Viewed 72k times. Lelouch Lamperouge Lelouch Lamperouge 3 3 gold badges 4 4 silver badges 9 9 bronze badges. I see that sometimes. What happens if you long-press the download progress entry and choose "Cancel"? Closely related: android. Active Oldest Votes.Discussion in ' Android Development ' started by BeanstalkAug 9, Are you ready for the Galaxy S20? Here is everything we know so far! Search titles only Newer Than: Search this thread only Search this forum only Display results as threads.
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How to Pause an Activity? Beanstalk Lurker. Is there any way to pause an activity for a brief period of time? What I want to do is implement a "Loading What I've seen so far is wait millis and Thread. The former gives terrible runtime errors and the latter puts even the monitor to sleep for that duration, hence defeating the purpose of using the sleep altogether. I basically want the app to freeze in it's current state for a few seconds. Thanks in advance. You should use an AsyncTask for this. It doesn't make your app hang so you can put a while loop in it.
If you want to update a loading bar you have to override the onProgressUpdate method and update it from there. I don't know why you want to pause your app, but this will do it: Code Text :. Similar Threads - Pause Activity. Replies: 3 Views: Replies: 4 Views: MrJavi Jan 9, Help Download on pause and unable to restart.
Niall HarrisonDec 5,in forum: Android Lounge.
Pausing and Resuming an Activity
Niall Harrison Dec 5, FacePause - pause any app when you looking away! DonB Jul 8, Snakeyeskm Apr 24, As a user navigates through, out of, and back to your app, the Activity instances in your app transition through different states in their lifecycle. The Activity class provides a number of callbacks that allow the activity to know that a state has changed: that the system is creating, stopping, or resuming an activity, or destroying the process in which the activity resides.
Within the lifecycle callback methods, you can declare how your activity behaves when the user leaves and re-enters the activity. For example, if you're building a streaming video player, you might pause the video and terminate the network connection when the user switches to another app.
When the user returns, you can reconnect to the network and allow the user to resume the video from the same spot. In other words, each callback allows you to perform specific work that's appropriate to a given change of state. Doing the right work at the right time and handling transitions properly make your app more robust and performant.
For example, good implementation of the lifecycle callbacks can help ensure that your app avoids:. This document explains the activity lifecycle in detail. The document begins by describing the lifecycle paradigm. Next, it explains each of the callbacks: what happens internally while they execute, and what you should implement during them.
Last, it discusses several topics related to transitions between activity states. To learn how to architect a robust, production-quality app using activities in combination with architecture components, see Guide to App Architecture. To navigate transitions between stages of the activity lifecycle, the Activity class provides a core set of six callbacks: onCreateonStartonResumeonPauseonStopand onDestroy.
The system invokes each of these callbacks as an activity enters a new state. Figure 1.
How to Pause and Resume sync in OneDrive
A simplified illustration of the activity lifecycle. As the user begins to leave the activity, the system calls methods to dismantle the activity. In some cases, this dismantlement is only partial; the activity still resides in memory such as when the user switches to another appand can still come back to the foreground.
If the user returns to that activity, the activity resumes from where the user left off. With a few exceptions, apps are restricted from starting activities when running in the background. Activity state and ejection from memory provides more information on the relationship between state and vulnerability to ejection. Depending on the complexity of your activity, you probably don't need to implement all the lifecycle methods.
However, it's important that you understand each one and implement those that ensure your app behaves the way users expect. The next section of this document provides detail on the callbacks that you use to handle transitions between states. This section provides conceptual and implementation information about the callback methods used during the activity lifecycle.
Some actions, such as calling setContentViewbelong in the activity lifecycle methods themselves. However, the code implementing the actions of a dependent component should be placed in the component itself. To achieve this, you must make the dependent component lifecycle-aware.
See Handling Lifecycles with Lifecycle-Aware Components to learn how to make your dependent components lifecycle-aware. You must implement this callback, which fires when the system first creates the activity. On activity creation, the activity enters the Created state. In the onCreate method, you perform basic application startup logic that should happen only once for the entire life of the activity. For example, your implementation of onCreate might bind data to lists, associate the activity with a ViewModeland instantiate some class-scope variables.
This method receives the parameter savedInstanceStatewhich is a Bundle object containing the activity's previously saved state. If the activity has never existed before, the value of the Bundle object is null. The method annotated with OnLifecycleEvent will be called so your lifecycle-aware component can perform any setup code it needs for the created state.
The following example of the onCreate method shows fundamental setup for the activity, such as declaring the user interface defined in an XML layout filedefining member variables, and configuring some of the UI.You must have heard of it. But before we explain some of these new features, the most important thing that many want to know about this update is how to pause a download in Android using Google Chrome and then get downloads to resume.
To begin with, this version is currently available in beta and those who run on Marshmallow are already using it. Also, it comes pre-installed on Android N devices.Best Download Manager for Android - Loader Droid ! [ Pause,Resume,Restart dead downloads]
Obviously, the limitations regarded the second option. Once the transfer starts, the user has no other control instrument than to stop the downloading process by closing the browser. That, and clearing it from the recent apps. The beta version of the browser is giving users, however, considerably more control like pausing downloads and resuming downloads. On the contrary, like mentioned, you can resume downloads from wherever you left, anytime later. These errors occur mostly when resuming a download, which is why you should think twice before deciding to do the upgrade.
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I created a service and want to run this service always until my phone restarts or force closed. The service should run in background. Is it possible to run this service always as when the application pauses and anything else. After some time my application goes pause and the services also go pause or stop. So how can I run this service in background and always. Start the service in the background using startService MyService so that it always stays active regardless of the number of bound clients.
For your service you may want a notification to launch the appropriate activity once it has been closed. Note that if the system needs the resources and your service is not very active it may be killed. If this is unacceptable bring the service to the foreground using startForeground. In order to start a service in its own process, you must specify the following in the xml declaration. How to make android service unstoppable. Not sure though this is the right implementation. This guy has explained it so clearly and have used a good algorithm.
His approach is to send a Broadcast when the service is about to get killed and then use it to restart the service. You don't require broadcast receiver. For Convenience, first denote them with notification ringtone as background process. Run the program, just open the application, you may find the notification alert at the background. Even, you may exit the application but still you might have hear the ringtone alert unless and until if you switched off the application or Uninstall the application.
This denotes that the notification alert is at the background process. Like this you may add some process for background. Learn more. Android Service needs to run always Never pause or stop Ask Question. Asked 7 years ago. Active 1 year, 5 months ago. Viewed k times. Chris Schiffhauer Not possible without making it a part of the system image. Android may kill your application entirely in some cases.
When your application get killed, its services won't be alive.