I'm start a new Activity B from Activity A, and find launch Activiy B is very slow, cost over 3000 Milliseconds, and when i click "back" to Activity A, then i found this log below:
CODE:....................
Activity B only contains a ListView with CursorAdapter.
Any idea how does this happen? this performance is unacceptable.
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I'm trying to write a game engine in Android, but I don't have much familiarity with threads.
My thread has an attribute, mSurfaceHolder, which holds the surface that I'll be drawing to. The run() method for my thread looks like this:
CODE:.............
STATE_RUNNING represents the state when the activity is in the foreground and the game should be running.
STATE_PAUSED represents the state when another activity has come into the foreground. I'm not completely sure why I need to still draw while it's paused, but that's what I seem to have gathered from the LunarLander example.
What I'm hoping is that while I'm looking at the activity, the game will update and draw (which I test by using LogCat). And then when I go back to the home screen or another activity appears over the top, it will just draw.
Well it does draw and update while I'm watching the activity, so the game loop itself works. But when I leave the activity, it has no effect. Here is the thread's pause() method that is called from the activity's onPause():
CODE:.............
As you can see, to test this method I have logged some messages. Now what I find when I leave the activity is that "Here" is logged, but "There" is not. Now with my limited knowledge of threads (I hardly know what synchronized actually does), I believe this will happen because my thread can't get synchronized with the surface holder. But I don't know WHY it doesn't synchronize. A few seconds after I've left the activity, I see the following warning in LogCat:
Activity pause timeout for HistoryRecord
Any idea why this would happen? There are no problems if I try to start the activity again, the thread just keeps running as it was.
Just discovered something else. The thread pauses just fine if I leave the activity within about a second of having started it. And then it will resume and pause again with no problems at all while the same task is still running. I have no idea why for a short period of time it will work, but if I leave it too long, it won't.
Okay... I fixed it. But I don't think I'm supposed to do what I've done. I've basically removed any synchronization with mSurfaceHolder from both the pause() and the setState() methods (which is used by pause()). No it works as it's supposed to, but I'm thinking the synchronization is there for a reason.
Perhaps the best question for me to ask is this: WHEN should you synchronize a thread with an object by use of a synchronized block? And in this case, what is the purpose of synchronizing with the SurfaceHolder?
I see no means by which my activity can pop itself off the activity stack to return the user to the one he was using before it was invoked. Is there one? My purpose is that my app has some data structures built from data provider queries that take 5-15 seconds to assemble and I don't want a lot of latency if it is used in a few one-shot purposes in rapid succession. I'm more than willing to let the system ask my app to die, but I'd like to keep warmed and ready otherwise.
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View 3 Replies View RelatedI have* two activities*,
*1st one* has a ques and 4 options.
*2nd one* is like a result page (... displaying if your ans is correct or not ...and showing the right ans ..)
Now what i want is when a user clicks :
on a right option [or wrong option] ..i want to turn that Image button into green [ red] .*.and wait for a while* ..and then go to the result activity ..
*so my only concern is onclick of a ImageButton ... how to wait for a while .. and then move to other activity* * * any kind of suggestion will do ..
I have one query. In Home Application the timer is running and if any ANR or Alert or Notify come then this home activity would go in Pause state but timer is running and visible. How it is happening. Can anybody explain me how this work.
View 4 Replies View RelatedSuppose i have a program that' s currently in a PAUSED state. Then the user launches another activity. In this second one, i want to find if the first one is in paused state or not because, if its paused, i want to recover it.
Is there a way to find if a specific activity is in pause state or not?
I have the following code in Oncreate of my activity:
CODE:.......................
In my app I have to load external page into WebView-based activity. Some of my users with slower connections are reporting screen timeout while waiting for the page to load. What would be a good way of loading the page on backgorund thread and then refreshing the screen? Use HttpClient to fetch it and then use WebView#loadData? My fear is - the page I'm loading is pretty complicated there's some JS that happens on load - wouldn't I just mess it up? Is there an alternative way of doing what I need?
View 5 Replies View RelatedJust wondering is it necessary to close cursor when an activity is stopped or pause?
View 5 Replies View RelatedFor some reason, one activity (launched in a new process) often takes longer than 10 seconds to start, which exceeds the LAUCH_TIMEOUT defined in ActivityManagerService.How do I make the VM tolerate longer launch time without giving up wake lock?
View 3 Replies View RelatedI am experimenting with using a WebView to display Flash content inside my activity. Everything is working pretty well, but when the user hits the home key to put the activity into the background, the Flash content keeps running (sound keeps playing, etc)
I have noticed that both the stock Android browser and Dolphin Browser seem to avoid this problem, and properly pause the Flash content when the browsing activity is put into the background.
Ideally I would like a solution that kills the WebView completely if the activity is finishing, but pauses it otherwise (basically copying the default behavior of the browser)
Here is a simple test I put together that loads a game on Kongregate which has some background music:
CODE:..............
I took a look at the latest source for the stock browser, and it seems to be doing something similar (calling pauseTimers/resumeTimers), although I fear the code I have been looking at is out of date, because it is calling functions that don't seem to exist anymore.
I did verify that the call to pauseTimers is working by testing with a simple JavaScript setInterval which updates a counter. Is there something else obvious that I should be trying in regard to Window or View management?
The documentation for the mobile Flash player says:
Flash Player will also automatically pause SWF playback it is not in view or the foreground application, for example when a call is received or alarm goes off, to reduce CPU utilization, battery usage and memory usage.
This seems to be working perfectly in both the stock browser and Dolphin Browser, but not in my app. Any ideas/solutions would be greatly appreciated!
Update: Here is the function we ended up adding to our activity to get this to work. We call it with "onPause" in the activity's onPause function and "onResume" in the activity's onResume function:
CODE:....................
onCreate, MyActivity will display five TextViews. After you touch one of the five TextViews, it will hide three to four TextViews and color one red and one green or just color one green.
I can code everything up to here. But how can I pause for a few seconds and then repopulate the five TextViews with new values, unhide them and make them all white?
I tried a Timer in a new project and can attach the code and make my question less vague.
Here is the main.xml
CODE:................
Here is the TestTimer.java
CODE:.....
The issue is that the Timer executes resetAndContinue and logs two entries, but it doesn't set the TextView color from green to white and it doesn't log anymore
CODE:.............
When another activity is started from main activity, The main activity get destroyed and created when returned back from second Activity main activity remains in pause state till second activity finish (), on Sart or on Resume from when returned back from second activity? which one these case does happen in And roid application?
View 3 Replies View Relatedis there a way to set screen timeouts to specific apps? For instance, when running navigation, can the screen time out be set to never timeout just for that app? I only want the screen to stay lite for certain apps.
View 10 Replies View RelatedI'm using SAXParser to parse large xml document from the net. And sometimes I need to pause SAXParser. I know how to stop parser by using SAXException, but how I can paused it? May be can I stop parser and then set up it to pass already parsed tags?
View 2 Replies View RelatedI am seeing an issue where when I hit the "back" button, I get the onPause call, but it isn't followed by onStop and on Destroy. On most phones, I see this, but on one particular phone (Droid-X),
View 7 Replies View RelatedIs it possible to use bundle and save the data in OnPause() lifecycle method? The scenario is i have 2 edit text and have entered some data i want to retain the data when the activity is killed and started again. his can be achieved using onSaveInstanceState() but as documentation says, this method is not a lifecycle method and hence the callback is not guaranteed. So i wanted to know if there is a way to save it using Bundle in onPause().
View 5 Replies View RelatedI have a loop which draw a bitmap for(int i=0;i<10;i++){
Here I draw a bitmap which will move to right a little bit in each loop.
I want a pause here so that an animation can be made.
I have an application that plays music. I want the application to get notified when the user plays a YouTube video so that I can pause the music in my own app. Is there a listener I can setup or a Broadcast receiver that I can setup to get notified of when the video is played.
View 3 Replies View RelatedI keep hearing that last.fm is better than Pandora, so I'm trying it out. But no pause button? Is this only for people who live in caves?
View 6 Replies View RelatedHow can i simulate pressing the HOME key to put my application in pause mode? Currently i call finish() but it destroys the application.
View 4 Replies View RelatedHow do I do a simple sleep() in Android? e.g. in Perl:
sleep 5;
to sleep for 5 seconds. I have a program that continues scanning wifi until it finds a certain router then plays a tune once found. All works fine, but it scans in 1.6 EXTREMELY fast, where as on 2.0 it scans about once per second. I also made a stop button that does:
mainWifi.setWifiEnabled(false);
But this causes a force close. ? actually every application I have made so far except hello world just gives me a force close. I have checked my permissions in the manifest etc.? I have a soundboard app that cannot play more than 7 sounds before it force closes? why?
Is it my phones hardware?
I have String Array with some strings in it [UP,L,R,R...] and I have some sounds (audio_up.mp3, audio_l.mp3 and so on). I want go through all the strings in the array and play sounds accordingly with pause in between (let's say 1 second).
CODE:........................
I am getting reports that the in the HTC Magic the character that represents the pause in a dial string is different than in the Google build of cupcake. In the SDK 1.5 pre-release, the pause is given by a ','. Apparently, in the HTC magic, the pause is given by a 'p'. Unfortunately, I don't currently have the means to test this. Does anyone know if the PhoneNumberUtils.PAUSE member in the HTC magic build reflects this change? Have any other functions in PhoneNumberUtils changed in order to support this?
View 3 Replies View RelatedI need a Music player that allows you to pause an MP3 in the background and then go back to it. I have a long MP3 file (3hrs) that I need to pause during the day and switch to a different app and then back to the music player. Everytime I hit the Home button it stops the player.
Are there players that allow you to pause and go to another app?
I am learning about OpenGL and managed to write a prototype game using VBO buffers. If I start the application from Eclipse or adb, everything works fine until I press the back or <Home> button. If I restart the application either by a long press on <HOME> and selecting my program or by restarting it from the applications, I sometimes get a black screen and the LogCat shows this error:
CODE:...............
I am aware that it is probably a wrong setting in my program's flow, but I am not fluently enough with OpenGL.
I am having an issue with a looping audio file using MediaPlayer. I am developing a realtime game and have a 100K MP3 file I want to loop as background music. The size of the file means I can't pre-load into memory (using SoundPool) so I am using the MediaPlayer to stream the data.
All works fine, however if I set the stream to loop (MediaPlayer#setLooping(true)) when the stream gets to the end and MediaPlayer loops, I get a distinct pause in gameplay. Everything seems to hang for a good chunk of time (~100ms) presumably while MediaPlayer re-seeks to the start of the audio file, and this is killing my framerate and making the game unplayable at these points.
There doesn't seem to be a way to configure any memory buffers etc on the MediaPlayer, so I'm wondering if I am using the wrong approach?
Any other ways to run continuous background music?
I get the following error
CODE:...
When trying to execute this code in a service:
CODE:..........
When the service is first called and no MediaPlayer-object exists, the stream is started correctly. But when the onStart()-method is called again (with the player streaming) I get the above error code. I can't find any information about this error code, so I turn to you for help. Replacing mp.pause() with mp.stop() makes it work. Could it be that the stream does not support pausing? It's an online radio stream (RTSP) in the SDP format.
I have created an application that read messages with voice. I would like to pause any running media player when a message arrives in order to make the voice more clear. Is there any intent that could achieve this aim? I have noticed that google navigator, for example, is able to pause media player (and other music app like pandora).
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