Android :: Screen Rotation - Rotates That Doesn't Recreate Everything And Re-fetch Data And Process It Again
Jul 16, 2010
I was working on implementing a more advanced list view then the standard one they teach you in basic tutorials, and I did find a great tutorial explaining how to create your own Adapter and such not. http://www.softwarepassion.com/android-series-custom-listview-items-a...
I do have a working version of the tutorial and I am currently in the process of changing the list to suit my needs, but there are a few issues I am stumped on. If your run the tutorial code it creates a little progress dialog saying that it is retrieving data. In my application it is going to be fetching data from the internet and storing it in an ArrayList of custom objects. However if I where to rotate the screen the progress dialog pops up again, I have no clue on how to set it up so that when it rotates that it doesn't recreate everything and re-fetch the data and process it again.
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Sep 5, 2010
I have configured my yahoo business mail on Email of Samsung Galaxy S phone. After 5 days, mail stops coming in. When I go to Manage Applications, 'Clear Cache' is always disabled. Only 'Clear Data' is enabled. I don't want to clear data and recreate every week. Any other way to enable 'Clear Cache'.
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Jul 31, 2010
I want my phone to have the capability of rotating the home screen for landscape use in my car mount. But I do not want to go to another home screen replacement app, I want to keep Sense UI.Does anyone know of a ROM that will allow for this?
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Dec 31, 2009
So I've noticed that everytime I get a text or email or anything to make my phone vibrate, while laying flat, it rotates the screen to landscape automatically. I never had this problem before the update, now I have this issue. Anyone else experiencing this?
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Aug 20, 2009
As far as I can tell, there is no API (official or unofficial) to access information about Apps on the Android Market (info such as Title, Icon, Description, Downloads, Comments, etc..)
However, there are a few websites that have managed to compile this information anyway.
My question is: How is this being done?
A couple of guesses.
Manually (not likely, due to volume) Implemented the protocol used by the official app (by decompiling or observing packets) Running some kind of debugger with the official app to extract the live data Using some kind of automation + screen shots + text recognition (seems complicated) Modifying the (open) source to write a log file
I'm just curious how this was done because I sure can't figure it out.
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Sep 10, 2009
I have a doubt in XML parsing. I'm parsing a XML file. That XML file contains more than 14000 lines. I'm fetching 15 tag in that xml file. It is taking more than 7 times to fetch. Because 14000 lines * 15 tag. That much time it is taking. Any idea for this to reduce time. Or give some other coding to fetch xml data easily. No I'm using RSS Reader to fetch data as like in Java.
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Jan 27, 2010
Ok so I've had enough of this Facebook app...it keeps saying it cannot fetch data because the connection resets. Even when I go on mobile facebook through the browser, it doesn't load. What's wrong with my Facebook app
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Nov 24, 2009
how to fetch data from database like mysql/sqlite
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Nov 24, 2009
How to fetch data from database like mysql / sqlite.can any one help me in this,i have tried the examples gave in the NOTEPAD sample.its not working(it dont shows any errors.) can any one guide me in this ...
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Aug 23, 2010
ParsedNotificationDataSet result = new ParsedNotificationDataSet(); Code...
here is my code to fetch data from database. according to me it works properly but at the very first time it will generate the exception java.lang.NullPointerException. after that it will runs very correctly. Will you help me what modification i will do to resolve this.
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Nov 17, 2010
I have been in problem of the Activity life-cycle. All though i read lots of docs on it put on getting clear picture on it. I have Activity A. In that activity I have menu options. If we click any option it opens the respective activity like if i click on 2nd button it opens Activity B Now again Activity B has same options into it. When user clicks on 1st button then i need to go back to activity A. So using this. Intent intent = new Intent().setClass(context, Articles.class); startActivity(intent); So always it starts new instance of activity and fetch data from DB. I want something like Activity A can be resumed back as it was.
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May 3, 2010
As we know, the apps in the apple app store has a unique itunes link, and we can fetch app data about the app from app store through the link.I am wondering how can i achieve this in the android market, just like the website http://www.androlib.com/ did?As long as I know, each app in the android market has a ID, which just like "com.gabrouze.magic", and the QR Code can be viewed in "http://chart.apis.google.com/chart?cht=qr&chs=135x135&chl=market://search?q=pname:com.gabrouze.magic".
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Oct 15, 2009
I have two phones, one running 1.5 and the other on 1.6. When I connect the 1.6 device via usb, DDMS recognizes it and in the top-left pane shows: HT842....... | Online | 1.6, debug
It then lists the individual processes, I can select them and use various tools like allocation tracker.
But when I connect the 1.5 device, DDMS recognizes it but shows: HT95A....... | Online | 1.5
But it does not show any of the processes on the device, so I am not able to do use allocation tracker and such. The sysinfo tab works, and I can monitor logcat with filter and such in the bottom pane.
What am I missing here? Obviously the 1.5 device has USB debugging enabled. Why does it not show 'debug' in DDMS? I'm using SDK 1.5_r2 on linux (Ubuntu 9.04), if that makes a difference.
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Mar 30, 2010
I've got an app where I don't want the screen to rotate when they rotate their device, I need to keep the app in portrait mode all the time. How do I do this?
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Sep 20, 2010
How should I handle an active ProgressDialog when the screen is rotated? Perhaps I should cancel the dialog in onDestroy and restart it in response to a SavedInstanceState flag?
I'm getting an exception and the following message in logcat:
CODE:..............
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Sep 10, 2010
Is there a standard pattern for handling a running AsyncTask with screen rotation? My AsyncTask runs for about 10 seconds. I could call AsyncTask.cancel in the Activity's onDestroy method and restart the task in onCreate but that would waste cycles, bandwidth, and user time. I'm guessing there is a better way.
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Nov 22, 2010
In my Android app I have 2 layouts, one for portrait and one for landscape.
In both layouts I have a TextView that the user can change by clicking on, by default it reads 'ON'
If the user presses it then it changes to 'OFF' All well and good.
However if it's set to OFF and the screen is rotated the text view resets to ON. How can I stop this from happening?
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Sep 16, 2010
Step #1: Make it a static inner class
Step #2: Manually associate your activity with the task in its constructor
Step #3: Return the task object from onRetainNonConfigurationInstance() of your activity
Step #4: In onCreate() of your activity, check getLastNonConfigurationInstance(), and if it is not null, associate your new activity instance with the task via a setter
Step #5: Use the activity within onPostExecute()
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Aug 22, 2009
I have an activity which I have defined to keep in portrait position.
However I would still like to change things (slightly) when the screen is rotated, what is the best way of doing this? I notice onConfigurationChanged is still called, but this still reports portrait mode.
I want to keep the notification bar etc in the same position if possible.
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Nov 1, 2009
Is there any way to make autorotation work in both ways: both clockwise and counter clockwise? It's a pain when reading a book that scrolls with volume keys (HTC Hero).
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Aug 16, 2010
I'd like rotate the screen to put it upside down. Can I do that with android API? I was told by some friends that there are APIs to rotate the screen by 90 degree but I can't find a way to rotate the screen by 180 degree (upside down).
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Apr 12, 2010
How to save my instance state or how to deal with my activity getting destroyed during screen rotation.
There seem to be a lot of possibilities but I haven't figured out which one works best for retrieving results of an AsyncTask.
I have some AsyncTasks that are simply started again and call the isFinishing() method of the activity and if the activity is finishing they wont update anything.
The problem is that I have one Task that does a request to a web service that can fail or succeed and restarting the task would result in a financial loss for the user.
How would you solve this? What are the advantages or disadvantages of the possible solutions?
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Nov 20, 2010
When I change the orientation of my screen in Android, an OnItemSelectedListener from a Spinner is called. It's not just the emulator, it also happens on a physical phone. How can I stop this from occurring?
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Apr 18, 2010
I've got an app that I don't want to auto-rotate. Currently, I've got it setup so that it is always in portrait mode. However, I'd like to add a setting to my preferences where the user can choose either portrait or landscape mode. Is there a way to force screen rotation? Or, could I perhaps make two different layout XML files, one for portrait and one for landscape, and programmatically choose which to use?
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Mar 24, 2010
I have come across some very unexpected (and incredibly frustrating) functionality while trying to restore the state of a list of CheckBoxes after a screen rotation. I figured I first would try to give a textual explanation without the code, in case someone is able to determine a solution without all the gory details. If anyone needs more details I can post the code.
I have a scrolling list of complex Views that contain CheckBoxes. I have been unsuccessful in restoring the state of these check boxes after a screen rotation. I have implemented onSaveInstanceState and have successfully transfered the list of selected check boxes to the onCreate method. This is handled by passing a long[] of database ids to the Bundle.
In onCreate() I check the Bundle for the array of ids. If the array is there I use it to determine which check boxes to check when the list is being built. I have created a number of test methods and have confirmed that the check boxes are being set correctly, based on the id array. As a last check I am checking the states of all check boxes at the very end of onCreate(). Everything looks good... unless I rotate the screen.
When I rotate the screen, one of two things happens: 1) If any number of the check boxes are selected, except for the last one, all check boxes are off after a rotation. 2) If the last check box is checked before rotation, then all check boxes are checked after rotation.
Like I said, I check the state of the boxes at the very end of my onCreate(). The thing is, the state of the boxes at the end of onCreate is correct based on what I selected before the rotation. However, the state of the boxes on the screen does not reflect this.
In addition, I have implemented each check box's setOnCheckChangedListener() and I have confirmed that my check boxes' state's are being altered after my onCreate method returns.
Why would the state of my check boxes change after my onCreate method returns?
I have been trying to degub this for a couple days now. After I found that my check boxes were apparently changing somewhere outside my own code I figured it was time to ask around.
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Mar 2, 2013
How to make Android's screen rotation faster (like iPhone)?
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Jul 9, 2012
I have a few questions about TWRP. I have been using it for a while now on my SGS2 t989 hercules variant and I like it alot but there are some things I am not sure about.
First when I make backups is it okay to only backup the System,Data,boot for regular backups? Or Should I just check everything system,data,boot,recovery,cache,.android_secure,sd-ext? Also if I make a data backup is that okay to restore after flashing a new rom instead of using titanium? I would think not but I want to know for sure.
Next thing is under the wipe menu, what is rotation data? I have never heard of it before. So should I wipe it once in awhile when I wipe the cache and dalvik?
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Mar 9, 2010
I am working on a home screen widget. I hope this widget can support auto rotation. For example, if the phone is in portrait mode, I want this home screen widget to be 2 cell * 2 cell on the home screen; if the phone is in landscape mode, I want this home screen widget changes be 3 cell * 1 cell on the home screen.
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Jul 29, 2010
My 2.1 rom only went into landscape mode when I turned the phone counter-clockwise. I have found that since updating to 2.2, the screen will go into landscape if I go either direction! I really liked the old one way landscape, and I wonder if this was intended, or just the result of an unfished leak...
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Aug 24, 2010
I have an android application that I want to always be running in landscape mode.
I have the following code implemented to keep the app in landscape mode all the time:
inside my activity in the Application Manifest
android:screenOrientation="landscape"
This seems to launch and keep the application in landscape view for the whole duration of the application. Perfect!
However, if I have the app running on my HTC Aria (Android 2.1) and the phone locks, if I unlock the phone, I see the application for probably half a second and it's in portrait orientation and then quickly switches back to landscape mode. It is quite frustrating because all of my views are jumbled around and it looks unprofessional as you can imagine. This happens in both the emulator and on my real phone.
Does anyone know how to stop the application from temporarily rotating when the phone is unlocked?
I have tried overriding onConfigurationChanged() but with no success.
I have also tried putting setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); into the onResume() but the app still shows as the incorrect orientation for a split second when the phone is unlocked.
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