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Which is best way to define constants in android, either static class, interface or xml resource?

I'm developing an android application which uses web service to get data from server, for that I'm having three different set of URLs to point development system, test server and live server. It's difficult to change URL whenever I want to give application for testing/live. so I planned to make it a...
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AsyncTask and error handling on Android

...error message." (From the user "Streets of Boston" groups.google.com/group/android-developers/browse_thread/thread/…) – OneWorld Oct 12 '10 at 15:06 ...
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proguard hell - can't find referenced class

... The latter class is part of the Java runtime (rt.jar) but not part of the Android runtime (android.jar), so ProGuard warns that something might be broken. If you're sure that your application works anyway, you can specify -dontwarn javax.xml.stream.events.** ProGuard hell? ...
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How to create directory automatically on SD card

...n. Something like this (in the manifest) should work: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> share | improve this answer | follo...
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How to quit android application programmatically

I Found some codes for quit an Android application programatically. By calling any one of the following code in onDestroy() will it quit application entirely? ...
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How to play an android notification sound

...solution to this, I found an answer at How to play ringtone/alarm sound in Android try { Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification); r.play(); } catch (Exception e) ...
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vagrant up failed, /dev/vboxnetctl: no such file or directory

... I'm running macOS High Sierra 10.13.1 and VirtualBox 5.2.2. This worked for me: Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra) Open Terminal an...
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Android Fragment handle back button press [duplicate]

...as edit text then it won't work at all... – Swap-IOS-Android Feb 24 '15 at 17:16  |  show 26 more comments ...
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Hidden Features of Xcode

... It's called "option" on the Mac, not "alt". And if you want fancy symbols, it can be written ⌥⌘↑ – Brian Campbell Mar 31 '09 at 15:33 ...
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Launch an app on OS X with command line

... open ./AppName.app --args -AppCommandLineArg But for older versions of Mac OS X, and because app bundles aren't designed to be passed command line arguments, the conventional mechanism is to use Apple Events for files like here for Cocoa apps or here for Carbon apps. You could also probably do s...