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2014/10/16 ¤W¤È 08:09:40
android Programming Glossary: alsoSaving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android Value Pair map and it will get passed in to onCreate and also onRestoreInstanceState where you'd extract the values like this.. UI state from the savedInstanceState. This bundle has also been passed to onCreate. boolean myBoolean savedInstanceState.getBoolean..
Libraries do not get added to APK anymore after upgrade to ADT 22 http://stackoverflow.com/questions/16596969/libraries-do-not-get-added-to-apk-anymore-after-upgrade-to-adt-22 the eclipse ADT plugin to the newest version v22 . I also upgraded the SDK of course. I do not see any compile errors.. in the Android Private Libraries in the package explorer also as i said no compile errors. The project runs fine on everyone..
Difference between px, dp, dip and sp in Android? http://stackoverflow.com/questions/2025282/difference-between-px-dp-dip-and-sp-in-android independent Pixels this is like the dp unit but it is also scaled by the user's font size preference. It is recommend you..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon It is useless with Android's application model. This is also contrary to how core applications work. Hehe for every step..
How to create Transparent Activity in Android? http://stackoverflow.com/questions/2176922/how-to-create-transparent-activity-in-android which I put in res values color.xml file. You can also use @android color transparent in later Android versions Then..
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 Note starting with 2.0 there is also an API ActivityManager.getProcessMemoryInfo to get this information.. is scaled by a ratio of the number of other processes also using that page. This way you can in theory add up the pss across.. above info as well as a variety of other things. You can also tack on the name or pid of a single process to see for example..
“Conversion to Dalvik format failed with error 1” on external JAR http://stackoverflow.com/questions/2680827/conversion-to-dalvik-format-failed-with-error-1-on-external-jar select your project and click OK. That should work. It is also possible that you have a JAR file located somewhere in your..
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 the right permissions INTERNET and WRITE_EXTERNAL_STORAGE also ACCESS_NETWORK_STATE if you want to check internet availability...
What is the simplest and most robust way to get the user's current location in Android? http://stackoverflow.com/questions/3145089/what-is-the-simplest-and-most-robust-way-to-get-the-users-current-location-in-a abstract void gotLocation Location location Somebody may also want to modify my logic. For example if you get update from..
Strange out of memory issue while loading an image to a Bitmap object http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object resize on the fly bit wise This would be preferable as I also need to make some changes to the properties of the widgets elements.. ERROR AndroidRuntime 3943 ERROR thread attach failed I also have a new error when displaying an image 01 25 22 13 18.594..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables appears twice the login method is called twice and also when the phone keyboard slides the login form appears again.. with the Application context. As you know each Activity is also a Context which is information about its execution environment.. environment in the broadest sense. Your application also has a context and Android guarantees that it will exist as a..
Android - basic gesture detection http://stackoverflow.com/questions/937313/android-basic-gesture-detection this listener I need to be able to detect single clicks also. Gesture detection mGestureDetector new GestureDetector this..
Android, How to manage start activity for result? http://stackoverflow.com/questions/10407159/android-how-to-manage-start-activity-for-result camera if it doesn't have then I'll close this activity. Also during preparation of MediaRecorder or MediaPlayer if problem..
This app won't run unless you update Google Play Services. (via Bazaar) http://stackoverflow.com/questions/13691943/this-app-wont-run-unless-you-update-google-play-services-via-bazaar yesterday at 23 18 I don't know how to link directly to it Also you don't see the via Bazaar part when running from an actual..
Sending and Receiving SMS and MMS in Android (pre Kit Kat Android 4.4) http://stackoverflow.com/questions/14452808/sending-and-receiving-sms-and-mms-in-android-pre-kit-kat-android-4-4 sending and receiving MMS . Has anyone gotten this to work Also I am aware that the SMS MMS ContentProvider is not a part of..
http://stackoverflow.com/questions/1554099/slow-android-emulator AVD or you can just create it later by editing the AVD. Also I have increased the Device RAM Size to 1024 which results in..
How to check internet access on Android? InetAddress never timeouts http://stackoverflow.com/questions/1560788/how-to-check-internet-access-on-android-inetaddress-never-timeouts netInfo.isConnectedOrConnecting return true return false Also add the following permission to the Android Manifest uses permission..
http://stackoverflow.com/questions/16636039/java-lang-classnotfoundexception-after-changing-nothing-in-the-project-but-upgra do the same for the library project also. Clean and Build. Also goto android sdk manager and check that you have the android..
How can I capture a video recording on Android? http://stackoverflow.com/questions/1817742/how-can-i-capture-a-video-recording-on-android Video and Rich Media Apps for Smartphones and Tablets Also do not forget to include these permissions in manifest uses..
Accepting a certificate for HTTPs on Android http://stackoverflow.com/questions/2012497/accepting-a-certificate-for-https-on-android create a DefaultHttpClient with SingleClientConnManager . Also in the code below you can see that on default will also use..
J2ME/Android/BlackBerry - driving directions, route between two locations http://stackoverflow.com/questions/2023669/j2me-android-blackberry-driving-directions-route-between-two-locations kml file and parse it Android Driving Direction Route Path Also Andrea made a DrivingDirections helper classes for Android...
Get/pick an image from Android's built-in Gallery app programmatically http://stackoverflow.com/questions/2169649/get-pick-an-image-from-androids-built-in-gallery-app-programmatically with the information provided in the answer below by @mad. Also check the solution below from @Khobaib explaining how to deal..
What are the best practices for SQLite on Android? http://stackoverflow.com/questions/2493331/what-are-the-best-practices-for-sqlite-on-android there is a follow up blog post Single SQLite connection Also checkout the fork by 2point0 of the previously mentioned locking..
Sending and Parsing JSON in Android http://stackoverflow.com/questions/2818697/sending-and-parsing-json-in-android knowledge of JSON should I have to accomplish this purpose Also it would be great if someone could provide me links of some..
Sending images using Http Post http://stackoverflow.com/questions/2935946/sending-images-using-http-post for images with urls for images embedded in JSON responses Also which is a better method accessing images remotely without downloading..
http://stackoverflow.com/questions/3197335/restful-api-service stripping out but unsure how to do callbacks without it. Also when I hit the post Config.getURL login values the app seems..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background is equal to your application package name. Also if you call ActivityManager.getRunningAppProcesses from your..
http://stackoverflow.com/questions/4725773/ffmpeg-on-android IOMX apis are OMX based and cannot plug in FFMPEG here. Also I could not find documentation on the FFMPEG apis which need..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables one of the rare ones that has multiple processes . NOTE 1 Also as anticafe commented in order to correctly tie your Application..
How to call Android contacts list? http://stackoverflow.com/questions/866769/how-to-call-android-contacts-list intent PICK_CONTACT 3 Listening for the Result Also in your Activity override the onActivityResult method to listen..
Using Application context everywhere? http://stackoverflow.com/questions/987072/using-application-context-everywhere beyond the scope of an Activity to avoid memory leaks . Also as an alternative to your pattern you can use the shortcut of..
How to add border around linear layout except at the bottom? http://stackoverflow.com/questions/10457135/how-to-add-border-around-linear-layout-except-at-the-bottom GingerBread 2.3.3 and run perfactlly as image below ALSO tested with galaxy s 3 running JellyBean 4.1.2 and run perfectly..
What is the difference between the states selected, checked and activated in Android? http://stackoverflow.com/questions/11504860/what-is-the-difference-between-the-states-selected-checked-and-activated-in-and do something like the above for state_checked and you ALSO need to extend your topmost view to implement the Checkable..
http://stackoverflow.com/questions/13462952/google-drive-sdk-exception ID IMPORTANT here choose Installed application Android ALSO IMPORTANT key in your generated SHA1 key key in your CORRECT..
DrawerLayout Double Drawer (Left and Right Drawers simultaneously) http://stackoverflow.com/questions/17861755/drawerlayout-double-drawer-left-and-right-drawers-simultaneously and i press the DrawerToggle button the left drawers opens ALSO and overlaps the right drawer. There are a couple of solutions..
http://stackoverflow.com/questions/3406534/password-hint-font-in-android text. 2 Leave android password true in your xml. In Java ALSO set the typeface and passwordMethod EditText password EditText..
Android read text raw resource file http://stackoverflow.com/questions/4087674/android-read-text-raw-resource-file THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER LEGAL RIGHTS THAT VARY FROM STATE TO STATE. On my..
Animating weightSum property using ObjectAnimator http://stackoverflow.com/questions/8341745/animating-weightsum-property-using-objectanimator Or is it impossible to animate the weightSum property ALSO 1 I don't want to mess with hard coded widths and animate those...
Geocoder's isPresent() method always returns false http://stackoverflow.com/questions/9075446/geocoders-ispresent-method-always-returns-false Geocoder.isPresent Geocoder.isPresent AndroidManifest.xml ALSO has following entries before application element uses sdk android..
http://stackoverflow.com/questions/9148615/android-stop-background-music as onPause and i do understand the actual differences EDIT ALSO it doesnt seem to matter if player.stop is above or below super.onStop..
Download and Extract Zip File in Android http://stackoverflow.com/questions/9324103/download-and-extract-zip-file-in-android HAS BEEN INITIALIZED BEFORE INVOKING THIS METHOD. ALSO MAKE SURE YOU HAVE SET INTERNET AND NETWORK ACCESS STATE PERMISSIONS..
Saving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android etc. The Bundle is essentially a way of storing a NVP Name Value Pair map and it will get passed in to onCreate and also onRestoreInstanceState where you'd extract the values like this @Override public void onRestoreInstanceState Bundle savedInstanceState.. super.onRestoreInstanceState savedInstanceState Restore UI state from the savedInstanceState. This bundle has also been passed to onCreate. boolean myBoolean savedInstanceState.getBoolean MyBoolean double myDouble savedInstanceState.getDouble..
Libraries do not get added to APK anymore after upgrade to ADT 22 http://stackoverflow.com/questions/16596969/libraries-do-not-get-added-to-apk-anymore-after-upgrade-to-adt-22 several library projects. Everything was fine until i upgraded the eclipse ADT plugin to the newest version v22 . I also upgraded the SDK of course. I do not see any compile errors in eclipse but when i run the project on the phone i get a NoClassDefFoundError... library project in the libs folder and i can see it in the Android Private Libraries in the package explorer also as i said no compile errors. The project runs fine on everyone else's computer that did not upgrade ADT. I have already..
Difference between px, dp, dip and sp in Android? http://stackoverflow.com/questions/2025282/difference-between-px-dp-dip-and-sp-in-android both dip and dp though dp is more consistent with sp . sp Scale independent Pixels this is like the dp unit but it is also scaled by the user's font size preference. It is recommend you use this unit when specifying font sizes so they will be..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon what you do do not put a quit or exit application button. It is useless with Android's application model. This is also contrary to how core applications work. Hehe for every step I take in the Android world I run into some sort of problem..
How to create Transparent Activity in Android? http://stackoverflow.com/questions/2176922/how-to-create-transparent-activity-in-android resources the value @color transparent is the color value #00000000 which I put in res values color.xml file. You can also use @android color transparent in later Android versions Then apply the style to your activity for example activity android..
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 intl de reference android os Debug.html#getMemoryInfo android.os.Debug.MemoryInfo Note starting with 2.0 there is also an API ActivityManager.getProcessMemoryInfo to get this information about another process http developer.android.com intl.. account memory sharing basically each page of RAM in a process is scaled by a ratio of the number of other processes also using that page. This way you can in theory add up the pss across all processes to see the total RAM they are using and.. about the memory use of each Java process containing the above info as well as a variety of other things. You can also tack on the name or pid of a single process to see for example adb shell dumpsys meminfo system give me the system process..
“Conversion to Dalvik format failed with error 1” on external JAR http://stackoverflow.com/questions/2680827/conversion-to-dalvik-format-failed-with-error-1-on-external-jar OK. Go to Project » Clean » Clean projects selected below » select your project and click OK. That should work. It is also possible that you have a JAR file located somewhere in your project folders I had copied the Admob JAR file into my src..
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 user has an internet connection available Make sure you have the right permissions INTERNET and WRITE_EXTERNAL_STORAGE also ACCESS_NETWORK_STATE if you want to check internet availability. Make sure the directory were you are going to download..
What is the simplest and most robust way to get the user's current location in Android? http://stackoverflow.com/questions/3145089/what-is-the-simplest-and-most-robust-way-to-get-the-users-current-location-in-a null public static abstract class LocationResult public abstract void gotLocation Location location Somebody may also want to modify my logic. For example if you get update from Network provider don't stop listeners but continue waiting...
Strange out of memory issue while loading an image to a Bitmap object http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object I can build the list adapter easily row by row where I can resize on the fly bit wise This would be preferable as I also need to make some changes to the properties of the widgets elements in each row as I am unable to select a row with touch.. dalvik.system.NativeStart.main Native Method 01 25 05 10 01.127 ERROR AndroidRuntime 3943 ERROR thread attach failed I also have a new error when displaying an image 01 25 22 13 18.594 DEBUG skia 4204 xxxxxxxxxxx jpeg error 20 Improper call to..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables Login.USERNAME The problem is the login form sometimes appears twice the login method is called twice and also when the phone keyboard slides the login form appears again and I guess the problem is the variable strSessionString. Does.. a more elegant way in Android is to associate your state with the Application context. As you know each Activity is also a Context which is information about its execution environment in the broadest sense. Your application also has a context.. is also a Context which is information about its 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..
Android - basic gesture detection http://stackoverflow.com/questions/937313/android-basic-gesture-detection this working across views. What when and how should I attach this listener I need to be able to detect single clicks also. Gesture detection mGestureDetector new GestureDetector this new GestureDetector.SimpleOnGestureListener public boolean..
Android, How to manage start activity for result? http://stackoverflow.com/questions/10407159/android-how-to-manage-start-activity-for-result I'm checking some features of handset such as does it have camera if it doesn't have then I'll close this activity. Also during preparation of MediaRecorder or MediaPlayer if problem happens then I'll close this activity. If it device has camera..
This app won't run unless you update Google Play Services. (via Bazaar) http://stackoverflow.com/questions/13691943/this-app-wont-run-unless-you-update-google-play-services-via-bazaar at the moment. The comment is from Zhelyazko Atanasov yesterday at 23 18 I don't know how to link directly to it Also you don't see the via Bazaar part when running from an actual device and the update button open the Play Store. I am assuming..
Sending and Receiving SMS and MMS in Android (pre Kit Kat Android 4.4) http://stackoverflow.com/questions/14452808/sending-and-receiving-sms-and-mms-in-android-pre-kit-kat-android-4-4 my application. There doesn't seem to be a standard way of sending and receiving MMS . Has anyone gotten this to work Also I am aware that the SMS MMS ContentProvider is not a part of the official Android SDK but I was thinking someone may have..
http://stackoverflow.com/questions/1554099/slow-android-emulator You have to enable this feature while creating a new AVD or you can just create it later by editing the AVD. Also I have increased the Device RAM Size to 1024 which results in very fast emulator. Refer the given below screenshots for..
How to check internet access on Android? InetAddress never timeouts http://stackoverflow.com/questions/1560788/how-to-check-internet-access-on-android-inetaddress-never-timeouts NetworkInfo netInfo cm.getActiveNetworkInfo if netInfo null netInfo.isConnectedOrConnecting return true return false Also add the following permission to the Android Manifest uses permission android name android.permission.ACCESS_NETWORK_STATE..
http://stackoverflow.com/questions/16636039/java-lang-classnotfoundexception-after-changing-nothing-in-the-project-but-upgra is selected. If you have referenced library project. do the same for the library project also. Clean and Build. Also goto android sdk manager and check that you have the android sdk build tools installed. This many not be necessary but make..
How can I capture a video recording on Android? http://stackoverflow.com/questions/1817742/how-can-i-capture-a-video-recording-on-android It's from my book Pro Android Media Developing Graphics Music Video and Rich Media Apps for Smartphones and Tablets Also do not forget to include these permissions in manifest uses permission android name android.permission.RECORD_AUDIO uses..
Accepting a certificate for HTTPs on Android http://stackoverflow.com/questions/2012497/accepting-a-certificate-for-https-on-android call the SchemeRegistry.register method. Then you need to create a DefaultHttpClient with SingleClientConnManager . Also in the code below you can see that on default will also use our flag ALLOW_ALL_HOSTNAME_VERIFIER by the method HttpsURLConnection.setDefaultHostnameVerifier..
J2ME/Android/BlackBerry - driving directions, route between two locations http://stackoverflow.com/questions/2023669/j2me-android-blackberry-driving-directions-route-between-two-locations in Blackberry csie tw gives a workaround query gmaps for kml file and parse it Android Driving Direction Route Path Also Andrea made a DrivingDirections helper classes for Android. I wrote a little helper for this functionality in j2me so I..
Get/pick an image from Android's built-in Gallery app programmatically http://stackoverflow.com/questions/2169649/get-pick-an-image-from-androids-built-in-gallery-app-programmatically is a complete solution. I've just updated this example code with the information provided in the answer below by @mad. Also check the solution below from @Khobaib explaining how to deal with picasa images. Single Picture Selection With support..
What are the best practices for SQLite on Android? http://stackoverflow.com/questions/2493331/what-are-the-best-practices-for-sqlite-on-android That should be out very soon. Take a look. In the meantime there is a follow up blog post Single SQLite connection Also checkout the fork by 2point0 of the previously mentioned locking example Android Database Locking Collisions Example by..
Sending and Parsing JSON in Android http://stackoverflow.com/questions/2818697/sending-and-parsing-json-in-android http localhost someimage.jpg time present time How much knowledge of JSON should I have to accomplish this purpose Also it would be great if someone could provide me links of some tutorials for sending and parsing JSON Objects. Complete Solution..
Sending images using Http Post http://stackoverflow.com/questions/2935946/sending-images-using-http-post from Django in JSON. Can the same approach be used for images with urls for images embedded in JSON responses Also which is a better method accessing images remotely without downloading them from the server or downloading and storing them..
http://stackoverflow.com/questions/3197335/restful-api-service need this for cross app communication so think these needs stripping out but unsure how to do callbacks without it. Also when I hit the post Config.getURL login values the app seems to pause for a while seems weird thought the idea behind a..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background while RunningAppProcessInfo.processName is equal to your application package name. Also if you call ActivityManager.getRunningAppProcesses from your application UI thread it will return importance IMPORTANCE_FOREGROUND..
http://stackoverflow.com/questions/4725773/ffmpeg-on-android get it decoded rendered. How can I do this on Android since IOMX apis are OMX based and cannot plug in FFMPEG here. Also I could not find documentation on the FFMPEG apis which need to be used for playback. Can you please help me with these..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables that this will not work across processes should your app be one of the rare ones that has multiple processes . NOTE 1 Also as anticafe commented in order to correctly tie your Application override to your application a tag is necessary in the..
How to call Android contacts list? http://stackoverflow.com/questions/866769/how-to-call-android-contacts-list when the selection is made or canceled . startActivityForResult intent PICK_CONTACT 3 Listening for the Result Also in your Activity override the onActivityResult method to listen for the return from the 'select a contact' Activity you..
Using Application context everywhere? http://stackoverflow.com/questions/987072/using-application-context-everywhere Activity and the Application Context when passing a context beyond the scope of an Activity to avoid memory leaks . Also as an alternative to your pattern you can use the shortcut of calling getApplicationContext on a Context object such as..
How to add border around linear layout except at the bottom? http://stackoverflow.com/questions/10457135/how-to-add-border-around-linear-layout-except-at-the-bottom @drawable border EDIT This XML tested with galaxy s running GingerBread 2.3.3 and run perfactlly as image below ALSO tested with galaxy s 3 running JellyBean 4.1.2 and run perfectly as image below Finally its works perfectlly with all APIs..
What is the difference between the states selected, checked and activated in Android? http://stackoverflow.com/questions/11504860/what-is-the-difference-between-the-states-selected-checked-and-activated-in-and do a nice background to a list item prior to HoneyComb you would do something like the above for state_checked and you ALSO need to extend your topmost view to implement the Checkable interface. Within that you then need to tell Android whether..
http://stackoverflow.com/questions/13462952/google-drive-sdk-exception Drive API enable Drive SDK go to API ACCESS create CLIENT ID IMPORTANT here choose Installed application Android ALSO IMPORTANT key in your generated SHA1 key key in your CORRECT package name com.example.xxx that you are using in your eclipse..
DrawerLayout Double Drawer (Left and Right Drawers simultaneously) http://stackoverflow.com/questions/17861755/drawerlayout-double-drawer-left-and-right-drawers-simultaneously not close the right one so if the right drawer is opened and i press the DrawerToggle button the left drawers opens ALSO and overlaps the right drawer. There are a couple of solutions i'am trying to get Make the same DrawerToggle button on the..
http://stackoverflow.com/questions/3406534/password-hint-font-in-android the dots will not appear but the passoword in clear text. 2 Leave android password true in your xml. In Java ALSO set the typeface and passwordMethod EditText password EditText findViewById R.id.register_password_text password.setTypeface..
Android read text raw resource file http://stackoverflow.com/questions/4087674/android-read-text-raw-resource-file WARRANTIES SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER LEGAL RIGHTS THAT VARY FROM STATE TO STATE. On my screen I have a layout like this LinearLayout xmlns android..
Animating weightSum property using ObjectAnimator http://stackoverflow.com/questions/8341745/animating-weightsum-property-using-objectanimator somewhere Am I missing some knowledge of the ObjectAnimator Or is it impossible to animate the weightSum property ALSO 1 I don't want to mess with hard coded widths and animate those. For now I want 50 50 for both screens but I might change..
Geocoder's isPresent() method always returns false http://stackoverflow.com/questions/9075446/geocoders-ispresent-method-always-returns-false Context.LOCATION_SERVICE Log.d LocationTestActivity Geocoder.isPresent Geocoder.isPresent AndroidManifest.xml ALSO has following entries before application element uses sdk android minSdkVersion 14 android targetSdkVersion 14 uses permission..
http://stackoverflow.com/questions/9148615/android-stop-background-music if this.isFinishing player.stop Does the same as onPause and i do understand the actual differences EDIT ALSO it doesnt seem to matter if player.stop is above or below super.onStop but it affecting something i cant see either way..
Download and Extract Zip File in Android http://stackoverflow.com/questions/9324103/download-and-extract-zip-file-in-android url context ctx count c MAKE SURE THAT localContext VARIABLE HAS BEEN INITIALIZED BEFORE INVOKING THIS METHOD. ALSO MAKE SURE YOU HAVE SET INTERNET AND NETWORK ACCESS STATE PERMISSIONS IN APPLICATION'S MANIFEST FILE. Log.d DEBUG In startUnzipping..
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