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2014/10/16 ¤W¤È 08:13:16
android Programming Glossary: existUnderstanding Fragment's setRetainInstance(boolean) http://stackoverflow.com/questions/11182180/understanding-fragments-setretaininstanceboolean fragments and non retained fragments were allowed to exist on the same backstack. Which are the use cases where it makes..
How do I add a library project to the Android Studio? http://stackoverflow.com/questions/16588064/how-do-i-add-a-library-project-to-the-android-studio classpath. Edit AndroidStudio is changing. I find out that exist a section named Open module settings if you right click on a..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon we put a menu option in to kill it If no such option exists how does the user terminate the application Answer Romain Guy.. Android platform since it addresses a lot of issues that exist in Windows Mobile and .NET. However the last week has been somewhat.. get frustrated with newer environments that break their existing mental model. This is not the fault of either environment..
Remove all debug logging calls before publishing: are there tools to do this? http://stackoverflow.com/questions/2446248/remove-all-debug-logging-calls-before-publishing-are-there-tools-to-do-this situations rare enough that I can decide it should not exist This is on the official checklist so I guess many people do..
Change the background color of the options menu http://stackoverflow.com/questions/2944244/change-the-background-color-of-the-options-menu that com.android.internal.view.menu.IconMenuItemView will exist on 3.X tablets since they use Action Bars instead of Options.. is the name of an internal Java class that exists in Android 3.2 and possibly beyond that may or may not exist.. in Android 3.2 and possibly beyond that may or may not exist in other Android revs is the class whose instance we want to..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog sure the directory were you are going to download files exist and has write permissions. If download is too big you may want..
Adding a library/JAR to an Eclipse Android project http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project LogCat that the class I'm attempting to consume doesn't exist. Caused by java.lang.ClassNotFoundException com.github.droidfu.widgets.WebImageView.....
Any good graphing packages for Android? [closed] http://stackoverflow.com/questions/424752/any-good-graphing-packages-for-android I've linked to his solution along with several others that exist now. rapidandroid question creator solution GraphView Java Charts..
Android Eclipse - Could not find *.apk [closed] http://stackoverflow.com/questions/4778113/android-eclipse-could-not-find-apk path. I have no visible compiler issues and no problems exist in my workspace. I did experience this issue before and solved..
How to get URI from an asset File? http://stackoverflow.com/questions/4820816/how-to-get-uri-from-an-asset-file new File assets mydemo.txt When I check if the file exists I see that file doesn't exist File f new File filepath if f.exists.. When I check if the file exists I see that file doesn't exist File f new File filepath if f.exists true Log.e TAG Valid filepath.. see that file doesn't exist File f new File filepath if f.exists true Log.e TAG Valid filepath else Log.e TAG InValid filepath..
Create a NinePatch/NinePatchDrawable in runtime http://stackoverflow.com/questions/5079868/create-a-ninepatch-ninepatchdrawable-in-runtime NOT be loaded from the Resources since the images doesn't exist in res drawable . Furthermore in order to create the NinePatch.. is then how do one format generate the chunk from an existing Bitmap containing the NinePatch information I've searched.. may or may not be treating the image stream correctly. The existence of Bitmap.getNinePatchChunk suggests that BitmapFactory..
Android backup/restore: how to backup an internal database? http://stackoverflow.com/questions/5282936/android-backup-restore-how-to-backup-an-internal-database databases directory before onRestore because it does not exist after install. I have implemented a similar solution for the..
Database not copying from assets http://stackoverflow.com/questions/5945196/database-not-copying-from-assets throws IOException First we check if the database already exists Method declared later boolean dbExist checkDataBase if dbExist.. checkDataBase if dbExist do nothing database already exists else By calling this method an empty database will be created.. Error copying database Check if the database already exist to avoid re copying the file each time you open the application...
Deleting a gallery image after camera intent photo taken http://stackoverflow.com/questions/6390163/deleting-a-gallery-image-after-camera-intent-photo-taken getString getApplicationInfo .labelRes If this does not exist we can create it here. if path.exists path.mkdir return new.. If this does not exist we can create it here. if path.exists path.mkdir return new File path String.valueOf System.currentTimeMillis.. 2 Ensure it's there check size and delete if f.exists CurrentFile.length c.getLong 0 CurrentFile.delete Finally..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables also has a context and Android guarantees that it will exist as a single instance across your application. The way to do.. variable or singleton but integrates quite well into the existing Android framework. Note that this will not work across processes..
Java 7 language features with Android http://stackoverflow.com/questions/7153989/java-7-language-features-with-android try with resources statement because it requires the non existing interface java.lang.AutoCloseable this can be used publicly.. annotation because java.lang.SafeVarargs does not exist ... yet It turns out that although Android's library is targeting.. is really missing though . We could confirm its existence via reflection. They are hidden simply because the Javadoc..
ViewPager and fragments ??what's the right way to store fragment's state? http://stackoverflow.com/questions/7951730/viewpager-and-fragments-whats-the-right-way-to-store-fragments-state is only called when a fragment for that position does not exist. After rotating Android will notice that it already created..
Understanding Fragment's setRetainInstance(boolean) http://stackoverflow.com/questions/11182180/understanding-fragments-setretaininstanceboolean not work is because things might get tricky if both retained fragments and non retained fragments were allowed to exist on the same backstack. Which are the use cases where it makes sense to use this method Retained fragments can be quite useful..
How do I add a library project to the Android Studio? http://stackoverflow.com/questions/16588064/how-do-i-add-a-library-project-to-the-android-studio their test directory or add the junit.jar file to the classpath. Edit AndroidStudio is changing. I find out that exist a section named Open module settings if you right click on a module folder in the project section of android studio I'm..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon Does the user have a choice to kill the application unless we put a menu option in to kill it If no such option exists how does the user terminate the application Answer Romain Guy The user doesn't the system handles this automatically. That's.. I was actually really looking forward to developing for the Android platform since it addresses a lot of issues that exist in Windows Mobile and .NET. However the last week has been somewhat of a turnoff for me... I hope I don't have to abandon.. Developers who lack the time or inclination to do this will get frustrated with newer environments that break their existing mental model. This is not the fault of either environment any more than it is the fault of a mountain for storms flowing..
Remove all debug logging calls before publishing: are there tools to do this? http://stackoverflow.com/questions/2446248/remove-all-debug-logging-calls-before-publishing-are-there-tools-to-do-this to the next line and chances are load is not called. Are such situations rare enough that I can decide it should not exist This is on the official checklist so I guess many people do this on a regular basis. So is there a tool that removes all..
Change the background color of the options menu http://stackoverflow.com/questions/2944244/change-the-background-color-of-the-options-menu to solve it as best we can. For example it seems unlikely that com.android.internal.view.menu.IconMenuItemView will exist on 3.X tablets since they use Action Bars instead of Options Menus. Finally some developers have solved this problem by.. inflater View view null com.android.internal.view.menu.IconMenuItemView is the name of an internal Java class that exists in Android 3.2 and possibly beyond that may or may not exist in other Android revs is the class whose instance we want.. is the name of an internal Java class that exists in Android 3.2 and possibly beyond that may or may not exist in other Android revs is the class whose instance we want to modify to set background etc. is the class we want to instantiate..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog if you want to check internet availability. Make sure the directory were you are going to download files exist and has write permissions. If download is too big you may want to implement a way to resume the download if previous attempts..
Adding a library/JAR to an Eclipse Android project http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project doesn't work on Android and I discover via the debugger LogCat that the class I'm attempting to consume doesn't exist. Caused by java.lang.ClassNotFoundException com.github.droidfu.widgets.WebImageView... Why when I get no compilation or..
Any good graphing packages for Android? [closed] http://stackoverflow.com/questions/424752/any-good-graphing-packages-for-android and posted some interesting stuff about it to the Internet. I've linked to his solution along with several others that exist now. rapidandroid question creator solution GraphView Java Charts for Android Just to summarize his solution involved using..
Android Eclipse - Could not find *.apk [closed] http://stackoverflow.com/questions/4778113/android-eclipse-could-not-find-apk project building the project manually reordering my java build path. I have no visible compiler issues and no problems exist in my workspace. I did experience this issue before and solved it once by removing the project form my workspace and re..
How to get URI from an asset File? http://stackoverflow.com/questions/4820816/how-to-get-uri-from-an-asset-file trying to get the URI path for an asset file. uri Uri.fromFile new File assets mydemo.txt When I check if the file exists I see that file doesn't exist File f new File filepath if f.exists true Log.e TAG Valid filepath else Log.e TAG InValid.. for an asset file. uri Uri.fromFile new File assets mydemo.txt When I check if the file exists I see that file doesn't exist File f new File filepath if f.exists true Log.e TAG Valid filepath else Log.e TAG InValid filepath Can some one tell me.. new File assets mydemo.txt When I check if the file exists I see that file doesn't exist File f new File filepath if f.exists true Log.e TAG Valid filepath else Log.e TAG InValid filepath Can some one tell me how I can mention the absolute path..
Create a NinePatch/NinePatchDrawable in runtime http://stackoverflow.com/questions/5079868/create-a-ninepatch-ninepatchdrawable-in-runtime or the chunk byte of the NinePatch. The NinePatch can NOT be loaded from the Resources since the images doesn't exist in res drawable . Furthermore in order to create the NinePatch you need the chunk of the NinePatch. So it all drills down.. NinePatch. So it all drills down to the chunk ... The question is then how do one format generate the chunk from an existing Bitmap containing the NinePatch information I've searched through the Android source code and the Web and I can't seem.. knows about the npTc chunk in these png files so it may or may not be treating the image stream correctly. The existence of Bitmap.getNinePatchChunk suggests that BitmapFactory might you could go look it up in the upstream codebase. In the..
Android backup/restore: how to backup an internal database? http://stackoverflow.com/questions/5282936/android-backup-restore-how-to-backup-an-internal-database db.insert in my ContentProviders and even tried creating the databases directory before onRestore because it does not exist after install. I have implemented a similar solution for the SharedPreferences successfully in a different app in the past...
Database not copying from assets http://stackoverflow.com/questions/5945196/database-not-copying-from-assets it with your own database. public void createDataBase throws IOException First we check if the database already exists Method declared later boolean dbExist checkDataBase if dbExist do nothing database already exists else By calling this.. the database already exists Method declared later boolean dbExist checkDataBase if dbExist do nothing database already exists else By calling this method an empty database will be created into the default system path of your application so we are.. Method declared later catch IOException e throw new Error Error copying database Check if the database already exist to avoid re copying the file each time you open the application. @return true if it exists false if it doesn't private boolean..
Deleting a gallery image after camera intent photo taken http://stackoverflow.com/questions/6390163/deleting-a-gallery-image-after-camera-intent-photo-taken File path new File Environment.getExternalStorageDirectory getString getApplicationInfo .labelRes If this does not exist we can create it here. if path.exists path.mkdir return new File path String.valueOf System.currentTimeMillis .jpg .getPath.. getString getApplicationInfo .labelRes If this does not exist we can create it here. if path.exists path.mkdir return new File path String.valueOf System.currentTimeMillis .jpg .getPath I have three variables in my Activity.. size is bigger copy it. Then delete it File f new File c.getString 2 Ensure it's there check size and delete if f.exists CurrentFile.length c.getLong 0 CurrentFile.delete Finally we can stop the copy. try CurrentFile.createNewFile FileChannel..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables execution environment in the broadest sense. Your application also has a context and Android guarantees that it will exist as a single instance across your application. The way to do this is to create your own subclass of android.app.Application.. ... This has essentially the same effect as using a static variable or singleton but integrates quite well into the existing Android framework. Note that this will not work across processes should your app be one of the rare ones that has multiple..
Java 7 language features with Android http://stackoverflow.com/questions/7153989/java-7-language-features-with-android literals 0b1110111 And these features cannot be used yet The try with resources statement because it requires the non existing interface java.lang.AutoCloseable this can be used publicly in 4.4 The @SafeVarargs annotation because java.lang.SafeVarargs.. this can be used publicly in 4.4 The @SafeVarargs annotation because java.lang.SafeVarargs does not exist ... yet It turns out that although Android's library is targeting for 1.6 the Android source does contain interfaces like.. interfaces like Closeable does inherit from AutoCloseable SafeVarargs is really missing though . We could confirm its existence via reflection. They are hidden simply because the Javadoc has the @hide tag which caused the android.jar not to include..
ViewPager and fragments ??what's the right way to store fragment's state? http://stackoverflow.com/questions/7951730/viewpager-and-fragments-whats-the-right-way-to-store-fragments-state will be placed. FragmentPagerAdapter.getItem int position is only called when a fragment for that position does not exist. After rotating Android will notice that it already created saved a fragment for this particular position and so it simply..
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