Android :: How To Detect When User Switches Tasks?
Aug 5, 2010
Say that TaskA is currently in the foreground and my ActivityA is somewhere within its stack. Is there a way for ActivityA to get notified or detect when the user switches from TaskA to TaskB? As a use scenario, when the user launches my app, my ActivityA will always be the root Activity of the newly created Task. ActivityA will make use of Activities from other Apps, which will be pushed on the same Task. I would like to get notified when the user has switched to another application. In this case, onStop() in MyActivityA does not suffice as that will also get invoked if the user navigates to another screen within my app.
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Jun 24, 2010
Is there an Event that is fired when an widget becomes visible on to the homescreen. I didn't mean at install time, I mean if the user changes his homescreen by wiping the surface of the phone. The background of this question is that I setup a timer in a service inside the widget that gets updates from a url but that should stop if the widget is not on the current homescreen.
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Jan 19, 2009
I want a countdowntimer to halt on a menu and also when the user goes from that menu to another activity. When the user comes back from that activity or when the menu is closed, the timer should still halt. However when the user went to the home screen and clicks on the icon again, I want the timer to restart. So my question is, is there a way to detect if the user has just opened your application, or if the user comes back from another activity or menu?
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Nov 17, 2010
I want this same behavior even when the app is in the foreground but user doesn't interact with the app for a long-time say 6-7 mins... Assume the screen is ON all the time... I want to detect kind of USER INACTIVITY (No interaction with app even though the app is in the foreground) and kick start my count down timer.
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Sep 21, 2010
I would like to know if the user is using the application for the first time. I am using SharedPreferences, but I am not sure if I have the right logic. How can I set my isFirstLaunched boolean to true when the user first launches, and then immediately set to false after work has been done?
protected void onStart() {
super.onStart();
if(isFirstLaunch()){
populateDefaultQuotes();
//Save the preferences, isFirstLaunch will now be false
SharedPreferences settings = getSharedPreferences(Constants.PREFS_NAME, 0);....................
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Jul 21, 2010
I would like to know if android has some kind of 'idle time broadcast message'. So for example if the user is currently using one activity of my application but haven't touched the screen or used any keyboard (and doesn't have the autolock at phone level or any screensaver) for a while, I would like to be informed (let's say after 60 seconds). I would like to avoid doing it manually (by tracking each user click, touch, activity changes...)
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Nov 20, 2010
I'm writing an application and I have a feedback screen. When the user presses submit button, it takes him to the default email client and prefills the email address, subject etc. ("mailto:") When the user presses Send, my application appears and I thank the user for giving feedback. However, how can I tell if the user has pressed the Discard button and did not send the email?
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Jan 10, 2010
I want to detect when a user taps anywhere in a view in my Android application. My code looks like this:
linearLayout = (LinearLayout) findViewById(R.id.linearLayout); // main layout
// ...
linearLayout.setOnTouchListener(this);
// ...
public boolean onTouch(View v, MotionEvent event) {
Toast.makeText(this, "Touch!", 1000);
if (event.getAction() == MotionEvent.ACTION_DOWN) {
Toast.makeText(this, "Down!", 1000);
return true;
}
return false;
}
but when I click on the view, I don't get Toast! Do touch events work in the emulator -- or have I got something wrong in my code?
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Oct 27, 2010
I'm currently working on a project which requires the detection of user state (walking, running, driving), I've looked through some of the existing solutions on Android platform such as pedometer or calculating velocity with given acceleration, but I'm still unsure how I can approach this problem. Is there a way to accomplish this without much of data mining/signal processing? How can I solve this with simple logic? Or is this better solved with gps instead of accelerometer? The program will only need to return simple user-state descriptions like walking.
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Feb 15, 2010
Is there a way, some API one can call to detect if the user has set a screen unlock pattern or not?
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Feb 5, 2010
Can you please tell me how can my activity detect user pressing HOME key?
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Sep 9, 2010
I don't want my app to crash if the user doesn't have wifi or 3g connectivity. How can I catch this at runtime in my app?
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Jun 28, 2010
I would like to launch an intent when any of my activity is visible, otherwise I will put it up as a notification, and will be fired by the user. To decide this, I need to know if any of my activity is front-most, how do I that?
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Jul 20, 2010
I have a code that will prompt user to send a message by selecting the desired application, how can I detect if the user actually have chose from the options or instead pressed Back? I tried to check if the intent returned something, but is running asyncronous so cannot be tracked. Also I have tried to run the intent with startActivityForResult, what I noticed in onActivityResult that resultCode is always 0(RESULT_CANCELED) even if user selected, or not from the chooser.
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Jul 30, 2009
In an activity, how do detect the fact that the user pressed the home button?
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Sep 6, 2010
I'm trying to get an Android background service to be "notified" when the user chooses a phone number (he wishes to call) from the phone's contacts list. My goal with this is to prevent the system from placing the call and present a user with a choice dialog, then go from there.
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Apr 3, 2010
I need to know when the user is panning the map so I can check if they've panned outside of the initial radius that I fetch data from the API with when the app launches. If the user pans outside this radius, when they stop panning I will get the new center point of the map and fetch new data with that geo-point. So far I can't find anything in the Google Maps API docs [and I've inspected the entire class tree] that notifies developers when any animation actions are occurring or completed.. It seems weird that Google wouldn't give us some sort of event listener or protected method to override on the MapView or something to do this.
I looked into what methods were available to override on the View class and it does have onAnimationEnd() but I guess panning or zooming the map doesn't count as an animation or is never passed up from the MapView or something... I tried running a simple log in onAnimationEnd() and it is never being called. Searching the interwebs gave me nothing but some never-successfully-answered posts.
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Dec 24, 2009
Visiting www.google.com on the Android browser (or even with an android spoofed user-agent), presents the option to "Share Location". When clicked, it uses the GPS/Cell phone towers to figure out the location. I tried the google.loader.clientLocation but that only works using the IP address. Is there a method to tap into the Android OS and access GPS data from a regular web application (and not an Android application) similar to the way Google does? [Perhaps Google uses the Google Gears app on Android to access this data.]
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Mar 15, 2010
Does anyone how I go about detecting when a user presses on a bitmap which is inside a canvas?
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Feb 17, 2011
I've got an app that needs to handle Android versions 2.2.1 and above differently than 2.2. I'd rather not create two separate apps, but I haven't been able to find a way to identify what version of Android is running on the user's device.
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Oct 12, 2010
I would like to be able to detect when a user types a key in the Search Dialog. I plan on using this to hook in to custom suggestion functionality.
Note: The built-in Search Manager custom suggestions functionality won't work for me because I need to customize the layout of the suggestions.
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Nov 18, 2010
I've an ImageView in a LinearLayout, how can I detect when user drag his finger from any place in the screen to inside of ImageView?
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Oct 17, 2010
For my site I need to be able to tell the difference between when an Android tablet visits and when an Android phone visits. It needs to be detected before the page is sent to the user so using JavaScript to check the screen res isn't an option.At the moment I use this to detect an android device: stripos($ua,'android')Is there anything unique thar a tablet has in it's user agent?
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Sep 22, 2009
My I18n files are ready but I can't find the way to detect the locale of the android user to do the good switch?
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May 8, 2010
I use a Samsung i5700 (Spica/Galaxy Portal/whatever it's called this week) and ideally I want to be able to toggle 3g off and on (for the sake of battery). Problem is that every solution (Juice Defender, APNDroid etc) work perfectly for maybe an hour, but then 3g stops being able to connect, forcing me to reboot (at which point everything is fine until I toggle 3g off again as above). Having read about this stuff, it seems to be a problem for many people, not just users of this particular phone.
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Nov 23, 2010
Is there an App that switches keyboards depending on the program in use? I know i can just long press and change it, but i was wondering if there was something out there, that could do this automatically. For some reason with swype when i send emails they either wont send or take hours to send. But swype works fine for text and other functions.
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Jan 19, 2010
Is there one which by default keeps them switched off when that option is selected? Currently the Milestone reactivates them when the phone is switched back on. I'd find this useful so that when roaming internationally I can control when I download ie on Wifi only, and not rack on huge data bills!
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Oct 1, 2010
There was a app that turns silent mode on on preset times, anyone know the app ?
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Dec 30, 2009
Does anybody know if there's an app that, when you go to sleep at night, switches your network from 3G to 2G at a pre-specified time then back to 3G at a certain time? I know it's simple to manually turn it to 2G and back myself, but I just thought it'd be nice to be lazy and have an app do it for me.
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Sep 7, 2010
Is it possibly to have a button in my app that switches to the phone's Maps application while passing in a destination for directions? And how would I do that? Haven't been able to find anything about it.
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