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2014/10/16 ¤W¤È 08:20:55
android Programming Glossary: osIs there any way to run Python on Android? http://stackoverflow.com/questions/101754/is-there-any-way-to-run-python-on-android such as multi touch apps. Kivy runs on Linux Windows OS X Android and iOS. You can run the same python code on all supported.. touch apps. Kivy runs on Linux Windows OS X Android and iOS. You can run the same python code on all supported platforms...
What Android tools and methods work best to find memory/resource leaks? http://stackoverflow.com/questions/1147172/what-android-tools-and-methods-work-best-to-find-memory-resource-leaks you come across or developed and care to share maybe in an OS project android memory leaks share improve this question..
Eclipse giving error, missing R.java file after recent update http://stackoverflow.com/questions/16608524/eclipse-giving-error-missing-r-java-file-after-recent-update for each usage instead . Same thing is happening with Mac OS also with the latest update. I have tried renaming activity_main.xml..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon so. That is not something that should be relied upon the OS to do. The application I am trying to create is not an application.. the reason your application is being exited is because the OS is shutting down and then your update process will fail mid.. for writing real apps Then neither can Web apps. Or WebOS if I understand their model correctly haven't had a chance to..
How to get the Android device's primary e-mail address http://stackoverflow.com/questions/2112965/how-to-get-the-android-devices-primary-e-mail-address a list of e mail addresses It's my understanding that on OS 2.0 there's support for multiple e mail addresses but below..
“Debug certificate expired” error in Eclipse Android plugins http://stackoverflow.com/questions/2194808/debug-certificate-expired-error-in-eclipse-android-plugins under ~ .android debug.keystore on Linux and Mac OS X the directory is something like USERPROFILE .android on Windows..
Display PDF within app on Android? http://stackoverflow.com/questions/2456344/display-pdf-within-app-on-android whatever out of the box. So my question is are there any OS JARs or classes to display a PDF document within an app Does..
Detect application heap size in Android http://stackoverflow.com/questions/2630158/detect-application-heap-size-in-android should my app use given the constraints of the Android OS version and hardware of the user's device There is a different.. through a simple process that does not replace the entire OS and in particular does not provide an interface that would allow.. effect similar to setting the heap manually via a rooted OS i.e. it would raise the value of maxMemory while leaving getMemoryClass..
Change the background color of the options menu http://stackoverflow.com/questions/2944244/change-the-background-color-of-the-options-menu .loadClass name catch ClassNotFoundException e this OS does not have IconMenuItemView fail gracefully return null..
Running multiple AsyncTasks at the same time — not possible? http://stackoverflow.com/questions/4068984/running-multiple-asynctasks-at-the-same-time-not-possible doInBackground . The issue is initially in early Android OS versions the pool size was just 1 meaning no parallel computations..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for below onPause onStop onDestroy Activity States The Android OS uses a priority queue to assist in managing activities running.. is in it will be assigned a certain priority within the OS. This priority system helps Android identify activities that.. identify activities that are no longer in use allowing the OS to reclaim memory and resources. The following diagram illustrates..
http://stackoverflow.com/questions/8671479/android-mediaplayer-works-fine-in-custom-audio-streaming-application-up-to-andro releases of Android. All production releases of Android OS have included a MediaPlayer that supports streaming media 1.. buffering technique to get around the problem. Android OS 2.2 replaced the old media player code with the FrightCast player..
How to make an Android Spinner with initial text “Select One” http://stackoverflow.com/questions/867518/how-to-make-an-android-spinner-with-initial-text-select-one it's not guaranteed to work in future OS updates. It seems likely that it will but it is by no means..
upload video to facebook in android http://stackoverflow.com/questions/10151708/upload-video-to-facebook-in-android int data 0 while data is.read 1 bs.write data is.close byte raw bs.toByteArray bs.close params.putByteArray video.. 1 bs.write data is.close byte raw bs.toByteArray bs.close params.putByteArray video raw params.putString filename selectedviedoPath.. filename selectedviedoPath mAsyncFbRunner.request me videos params POST new WallPostListener android facebook share improve..
How to run a Runnable thread in Android? http://stackoverflow.com/questions/1921514/how-to-run-a-runnable-thread-in-android Runnable public void run tv.append Hello World handler.postDelayed r 1000 When i run this appication the text is displayed.. Runnable public void run tv.append Hello World handler.postDelayed this 1000 handler.postDelayed r 1000 Or we can use normal.. Hello World handler.postDelayed this 1000 handler.postDelayed r 1000 Or we can use normal thread for example with..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android level API for looking at overall memory usage. This is mostly there to help an application gauge how close the system is.. This is mostly there to help an application gauge how close the system is coming to having no more memory for background.. usage http developer.android.com intl de reference android os Debug.html#getMemoryInfo android.os.Debug.MemoryInfo Note starting..
Load files bigger than 1M from assets folder http://stackoverflow.com/questions/2860157/load-files-bigger-than-1m-from-assets-folder platform but I also know that can be easily avoided. Those who have downloaded the game Reging Thunder for example can.. f File.createTempFile mytempfile dat FileOutputStream fos new FileOutputStream f InputStream is mc.getAssets .open path.. new ObjectInputStream is byte data byte ois.readObject fos.write data fos.flush fos.close ois.close is.close now I have..
How do I get the logfile from an Android device? http://stackoverflow.com/questions/2882253/how-do-i-get-the-logfile-from-an-android-device the device to the pc. Check that I already setup my os for that particular device . Open a terminal Run adb shell logcat..
Retrieving Android API version programmatically http://stackoverflow.com/questions/3423754/retrieving-android-api-version-programmatically level integer the phone is running is available in android.os.Build.VERSION.SDK_INT The enum corresponding to this int is.. The enum corresponding to this int is in the android.os.Build.VERSION_CODES class. Code example int currentapiVersion.. class. Code example int currentapiVersion android.os.Build.VERSION.SDK_INT if currentapiVersion android.os.Build.VERSION_CODES.FROYO..
Programmatically switching off Android phone http://stackoverflow.com/questions/3745523/programmatically-switching-off-android-phone also. android share improve this question You could possibly use the PowerManager to make it reboot this does not guarantee.. may cancel it http developer.android.com reference android os PowerManager.html#reboot java.lang.String It requires the REBOOT..
AsyncTask and Looper.prepare() error http://stackoverflow.com/questions/4187960/asynctask-and-looper-prepare-error return null @Override public void onPostExecute Void unused myMapView.getOverlays .add sites myMapView.invalidate.. thread that has not called Looper.prepare at android.os.Handler. init Handler.java 121 at android.os.AsyncTask InternalHandler... at android.os.Handler. init Handler.java 121 at android.os.AsyncTask InternalHandler. init AsyncTask.java 421 at android.os.AsyncTask..
How can I Zip and Unzip a string using GZIPOutputStream that is compatible with .Net? http://stackoverflow.com/questions/6717165/how-can-i-zip-and-unzip-a-string-using-gzipoutputstream-that-is-compatible-with .putInt str.length .array ByteArrayOutputStream os new ByteArrayOutputStream str.length GZIPOutputStream gos new.. os new ByteArrayOutputStream str.length GZIPOutputStream gos new GZIPOutputStream os gos.write str.getBytes gos.close os.close.. str.length GZIPOutputStream gos new GZIPOutputStream os gos.write str.getBytes gos.close os.close byte compressed new..
Need help to convert a Pdf page into Bitmap in Android Java http://stackoverflow.com/questions/8814758/need-help-to-convert-a-pdf-page-into-bitmap-in-android-java operation Like that I have tried many jars. But no positive result. Please help me in this.. byte bytes try File file.. int rect.width int rect.height rect FileOutputStream os new FileOutputStream this.getFilesDir .getAbsolutePath pdf.jpg.. pdf.jpg image.compress Bitmap.CompressFormat.JPEG 80 os ImageView findViewById R.id.testView .setImageBitmap image I..
Is there any way to run Python on Android? http://stackoverflow.com/questions/101754/is-there-any-way-to-run-python-on-android of applications that make use of innovative user interfaces such as multi touch apps. Kivy runs on Linux Windows OS X Android and iOS. You can run the same python code on all supported platforms. Kivy Showcase app https play.google.com.. that make use of innovative user interfaces such as multi touch apps. Kivy runs on Linux Windows OS X Android and iOS. You can run the same python code on all supported platforms. Kivy Showcase app https play.google.com store apps details..
What Android tools and methods work best to find memory/resource leaks? http://stackoverflow.com/questions/1147172/what-android-tools-and-methods-work-best-to-find-memory-resource-leaks gets a lot of favorable reviews. What tools or methods have you come across or developed and care to share maybe in an OS project android memory leaks share improve this question Here are a couple of good blog posts I've come across. http..
Eclipse giving error, missing R.java file after recent update http://stackoverflow.com/questions/16608524/eclipse-giving-error-missing-r-java-file-after-recent-update Don't include android.R here use a fully qualified name for each usage instead . Same thing is happening with Mac OS also with the latest update. I have tried renaming activity_main.xml to other name but still my R.java is not generated...
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon app that the user can quit the app when he she decides to do so. That is not something that should be relied upon the OS to do. The application I am trying to create is not an application for the Android Market. It is not an application for.. That is a mistake on any operating system. For all you know the reason your application is being exited is because the OS is shutting down and then your update process will fail mid stream. Generally that's not a good thing. Either check updates.. like that in Android then I think that android cant be used for writing real apps Then neither can Web apps. Or WebOS if I understand their model correctly haven't had a chance to play with one yet . In all of those users don't terminate..
How to get the Android device's primary e-mail address http://stackoverflow.com/questions/2112965/how-to-get-the-android-devices-primary-e-mail-address How do you get the Android's primary e mail address or a list of e mail addresses It's my understanding that on OS 2.0 there's support for multiple e mail addresses but below 2.0 you can only have one e mail address per device. android..
“Debug certificate expired” error in Eclipse Android plugins http://stackoverflow.com/questions/2194808/debug-certificate-expired-error-in-eclipse-android-plugins share improve this question Delete your debug certificate under ~ .android debug.keystore on Linux and Mac OS X the directory is something like USERPROFILE .android on Windows . The Eclipse plugin should then generate a new certificate..
Display PDF within app on Android? http://stackoverflow.com/questions/2456344/display-pdf-within-app-on-android that Android is not able to display PDFs in a WebView or whatever out of the box. So my question is are there any OS JARs or classes to display a PDF document within an app Does anybody have experience with using some of the standard Java..
Detect application heap size in Android http://stackoverflow.com/questions/2630158/detect-application-heap-size-in-android my app use before a hard error is triggered And How much heap should my app use given the constraints of the Android OS version and hardware of the user's device There is a different method for determining each of the above. For item 1 above.. a stock version of ICS except that I've rooted the tablet through a simple process that does not replace the entire OS and in particular does not provide an interface that would allow the heap size to be manually adjusted. For that device.. numbers above would be that this option would have an effect similar to setting the heap manually via a rooted OS i.e. it would raise the value of maxMemory while leaving getMemoryClass alone. There is another method getLargeMemoryClass..
Change the background color of the options menu http://stackoverflow.com/questions/2944244/change-the-background-color-of-the-options-menu null try IconMenuItemView_class getClassLoader .loadClass name catch ClassNotFoundException e this OS does not have IconMenuItemView fail gracefully return null hack failed use normal inflater if IconMenuItemView_class..
Running multiple AsyncTasks at the same time — not possible? http://stackoverflow.com/questions/4068984/running-multiple-asynctasks-at-the-same-time-not-possible uses a thread pool pattern for running the stuff from doInBackground . The issue is initially in early Android OS versions the pool size was just 1 meaning no parallel computations for a bunch of AsyncTasks. But later they fixed that..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for OR try to finish the activity the events are called as below onPause onStop onDestroy Activity States The Android OS uses a priority queue to assist in managing activities running on the device. Based on the state a particular Android activity.. the device. Based on the state a particular Android activity is in it will be assigned a certain priority within the OS. This priority system helps Android identify activities that are no longer in use allowing the OS to reclaim memory and.. priority within the OS. This priority system helps Android identify activities that are no longer in use allowing the OS to reclaim memory and resources. The following diagram illustrates the states an activity can go through during its lifetime..
http://stackoverflow.com/questions/8671479/android-mediaplayer-works-fine-in-custom-audio-streaming-application-up-to-andro buffering technique to get around limitations in pre 1.2 releases of Android. All production releases of Android OS have included a MediaPlayer that supports streaming media 1 . I would recommend doing that rather than using this double.. 1 . I would recommend doing that rather than using this double buffering technique to get around the problem. Android OS 2.2 replaced the old media player code with the FrightCast player which probably is acting differently in this case. The..
How to make an Android Spinner with initial text “Select One” http://stackoverflow.com/questions/867518/how-to-make-an-android-spinner-with-initial-text-select-one AdapterView.setNextSelectedPositionInt and AdapterView.setSelectedPositionInt it's not guaranteed to work in future OS updates. It seems likely that it will but it is by no means guaranteed. Normally I wouldn't condone something like this..
upload video to facebook in android http://stackoverflow.com/questions/10151708/upload-video-to-facebook-in-android ByteArrayOutputStream bs new ByteArrayOutputStream int data 0 while data is.read 1 bs.write data is.close byte raw bs.toByteArray bs.close params.putByteArray video raw params.putString filename selectedviedoPath mAsyncFbRunner.request.. bs new ByteArrayOutputStream int data 0 while data is.read 1 bs.write data is.close byte raw bs.toByteArray bs.close params.putByteArray video raw params.putString filename selectedviedoPath mAsyncFbRunner.request me videos params POST.. bs.close params.putByteArray video raw params.putString filename selectedviedoPath mAsyncFbRunner.request me videos params POST new WallPostListener android facebook share improve this question Below is what i have done and now Works..
How to run a Runnable thread in Android? http://stackoverflow.com/questions/1921514/how-to-run-a-runnable-thread-in-android snippet from my code handler new Handler Runnable r new Runnable public void run tv.append Hello World handler.postDelayed r 1000 When i run this appication the text is displayed only one time.Please any one knows how to run a thread using.. The simple fix to your example is final Runnable r new Runnable public void run tv.append Hello World handler.postDelayed this 1000 handler.postDelayed r 1000 Or we can use normal thread for example with original Runner Thread thread.. example is final Runnable r new Runnable public void run tv.append Hello World handler.postDelayed this 1000 handler.postDelayed r 1000 Or we can use normal thread for example with original Runner Thread thread new Thread @Override public void..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android with.html Now ActivityManager.getMemoryInfo is our highest level API for looking at overall memory usage. This is mostly there to help an application gauge how close the system is coming to having no more memory for background processes thus.. is our highest level API for looking at overall memory usage. This is mostly there to help an application gauge how close the system is coming to having no more memory for background processes thus needing to start killing needed processes like.. Debug API to get raw kernel level information about memory usage http developer.android.com intl de reference android os Debug.html#getMemoryInfo android.os.Debug.MemoryInfo Note starting with 2.0 there is also an API ActivityManager.getProcessMemoryInfo..
Load files bigger than 1M from assets folder http://stackoverflow.com/questions/2860157/load-files-bigger-than-1m-from-assets-folder give error with larger files. I read that is a limit of Android platform but I also know that can be easily avoided. Those who have downloaded the game Reging Thunder for example can easily see that in their assets folder is a file 18.9M large... This is my code for read 1 object from a ObjecInputStream File f File.createTempFile mytempfile dat FileOutputStream fos new FileOutputStream f InputStream is mc.getAssets .open path 3 ObjectInputStream ois new ObjectInputStream is byte data.. InputStream is mc.getAssets .open path 3 ObjectInputStream ois new ObjectInputStream is byte data byte ois.readObject fos.write data fos.flush fos.close ois.close is.close now I have an uncompressed file and I can use it without worrying about..
How do I get the logfile from an Android device? http://stackoverflow.com/questions/2882253/how-do-i-get-the-logfile-from-an-android-device
Retrieving Android API version programmatically http://stackoverflow.com/questions/3423754/retrieving-android-api-version-programmatically question As described in the android documentation the SDK level integer the phone is running is available in android.os.Build.VERSION.SDK_INT The enum corresponding to this int is in the android.os.Build.VERSION_CODES class. Code example int.. phone is running is available in android.os.Build.VERSION.SDK_INT The enum corresponding to this int is in the android.os.Build.VERSION_CODES class. Code example int currentapiVersion android.os.Build.VERSION.SDK_INT if currentapiVersion android.os.Build.VERSION_CODES.FROYO.. corresponding to this int is in the android.os.Build.VERSION_CODES class. Code example int currentapiVersion android.os.Build.VERSION.SDK_INT if currentapiVersion android.os.Build.VERSION_CODES.FROYO Do something for froyo and above versions..
Programmatically switching off Android phone http://stackoverflow.com/questions/3745523/programmatically-switching-off-android-phone lock.reenableKeygaurd to enable and I used the permission also. android share improve this question You could possibly use the PowerManager to make it reboot this does not guarantee that it'll reboot OS may cancel it http developer.android.com.. make it reboot this does not guarantee that it'll reboot OS may cancel it http developer.android.com reference android os PowerManager.html#reboot java.lang.String It requires the REBOOT permission http developer.android.com reference android..
AsyncTask and Looper.prepare() error http://stackoverflow.com/questions/4187960/asynctask-and-looper-prepare-error null @Override public Void doInBackground Void... unused grabShipsWithLocation return null @Override public void onPostExecute Void unused myMapView.getOverlays .add sites myMapView.invalidate isLoading false That seems to work fine on a.. Caused by java.lang.RuntimeException Can't create handler inside thread that has not called Looper.prepare at android.os.Handler. init Handler.java 121 at android.os.AsyncTask InternalHandler. init AsyncTask.java 421 at android.os.AsyncTask.. handler inside thread that has not called Looper.prepare at android.os.Handler. init Handler.java 121 at android.os.AsyncTask InternalHandler. init AsyncTask.java 421 at android.os.AsyncTask InternalHandler. init AsyncTask.java 421 at android.os.AsyncTask...
How can I Zip and Unzip a string using GZIPOutputStream that is compatible with .Net? http://stackoverflow.com/questions/6717165/how-can-i-zip-and-unzip-a-string-using-gzipoutputstream-that-is-compatible-with ByteBuffer .allocate 4 .order java.nio.ByteOrder.LITTLE_ENDIAN .putInt str.length .array ByteArrayOutputStream os new ByteArrayOutputStream str.length GZIPOutputStream gos new GZIPOutputStream os gos.write str.getBytes gos.close os.close.. .putInt str.length .array ByteArrayOutputStream os new ByteArrayOutputStream str.length GZIPOutputStream gos new GZIPOutputStream os gos.write str.getBytes gos.close os.close byte compressed new byte 4 os.toByteArray .length System.arraycopy.. .array ByteArrayOutputStream os new ByteArrayOutputStream str.length GZIPOutputStream gos new GZIPOutputStream os gos.write str.getBytes gos.close os.close byte compressed new byte 4 os.toByteArray .length System.arraycopy blockcopy 0..
Need help to convert a Pdf page into Bitmap in Android Java http://stackoverflow.com/questions/8814758/need-help-to-convert-a-pdf-page-into-bitmap-in-android-java 2. Tried Itext jar which converts image to pdf I need its reverse operation Like that I have tried many jars. But no positive result. Please help me in this.. byte bytes try File file new File this.getFilesDir .getAbsolutePath 2010Q2_SDK_Overview.pdf.. rect.height Bitmap.Config.ARGB_8888 Bitmap image page.getImage int rect.width int rect.height rect FileOutputStream os new FileOutputStream this.getFilesDir .getAbsolutePath pdf.jpg image.compress Bitmap.CompressFormat.JPEG 80 os ImageView.. os new FileOutputStream this.getFilesDir .getAbsolutePath pdf.jpg image.compress Bitmap.CompressFormat.JPEG 80 os ImageView findViewById R.id.testView .setImageBitmap image I am getting the Image File Instead of package com.test123 import..
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