I want to make an activity in my native android app that doesn't allow to change to other apps, or open settings or go back to home screen, just like the alarm apps do when the alarm comes in, but I can't find anything about how to do this.
Does anybody know how to do this?
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I am a beginner in android development. I want to know that is it possible to know the app which is opened currently. I came to know that finding the apps which are running currently through Activity Manager (getRunningTasks()) is now removed from the Android studio. So I want to know is there any other way to know? I just want to know the app which is opened and running currently on the mobile but not the apps running in the background Could somebody please help me in this case?
You can use AccessibilityService to get event notification. But AccessibilityService are specifically for accessibility uses. If you use the service for other purposes, then the application will more likely to be downed/removed for PlayStore due to policies. Another viable option is UsageStatsManager, but with some limitations.
UsageStatsManager is not push event based system. You have to poll in few mills(depends upon the use-case)
Usage Access Permission grant/deny is not straight forward. You have to start Setting Activity with Settings#ACTION_USAGE_ACCESS_SETTINGS action and have to rely on the users understanding of how to grant permission(Since permission list may contain other applications).
I have a Bluetooth device that I can connect to an android phone, and I need to launch a specific application when a certain button is pressed on the Bluetooth Device.
So on press A--> Application A needs to be opened.
As of now, I am attempting to build an android application which can scan for and connect to the bluetooth device, with a set of built-in keymaps (A->Application A, etc), and the application would open up the application corresponding to the keymap, but this approach has its limitations in that I was not able to successively select buttons to transfer between apps.
Would there be a way to directly interact with the android kernal from BlueTooth to try to directly open up desired applications?
There should be a number of ways to get what you want, depending on your circumstances. We can provide more help for specifics if you post some of the code you're currently using to start the apps. It never hurts to review the basics of using Intents to start Activities.
Just guessing, but you may need to bring the requested activity to the foreground if it has already started and something else has focus.
I know it's not the best practice, but it is a requested feature (e.g. for business apps). When the App gets installed, I need to automatically place it on the home screen. I saw a lot of code on the internet, but all of the code only works on button click when the app starts. But I need to place a shortcut on the homescreen immediately after the app is installed and before the app starts. Is there a way I can achieve this?
PS: To make the question more clear: The app will be distributed without Google Play Store, so that's not an option.
Thanks for your help!
Best regards,
Robin
You can't run any code in your application before the user starts your application for first time during to restrictions since Android 3.1. Check this for more information
That's an optional feature of the Market app, not of the apps themselves. When designing an application , it does not receive a broadcast about itself being installed.
the first time the app launched can create it.
You can achieve that by creating a method in your main activity and call this method from oncreate and create a boolean variable andsave it in shared preferences
I want my app automatically open when user click (for example) chrome or any other apps.
How to do this?
My app is for preventing people use cell phone all the time.
Explicitly, there is a mission in my app. when user starts this mission, user cannot use other app until they give up the mission.
User can minimize my app, but when user click another app, my app will prompt programmatically to tell user not to use the cell phone.
Instead of preventing user to launch other apps, I think you should use activities' life cycle. You can add code in onPause() and detect user press home button or back button. And when your activity is not on foreground, you can pop a dialog or something to remind your user focus on his work not his phone. BTW I do see the positive side of your app.
I want my users to be able to launch my app by long pressing back button, recent apps button or home button. Or even long press on volume up/down or power button.... something which would allow users to execute my app without touching a screen icon.
I offer similar voice solution to Google Now, which btw. opens after a long press on home button. Any way I can do the same? I get this question from my users almost daily...
I don't think your users will be able to do this without rooting. I found this thread which is worth reading:
http://forums.androidcentral.com/samsung-galaxy-s3/183113-button-remapping.html
alternatively they mentioned Go Launcher app
I've read through the list of ACTIONs that you can use for starting an activity through intents, but can not find any of the ones you wanted. If you do find any other ACTION useful there is more info on how to actually do it here.