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2014/10/16 ¤W¤È 08:27:35
android Programming Glossary: whenSaving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android public class HelloAndroid extends Activity Called when the activity is first created. @Override public void onCreate..
Sending Email in Android using JavaMail API without using the default/built-in app http://stackoverflow.com/questions/2020088/sending-email-in-android-using-javamail-api-without-using-the-default-built-in-a public class MailSenderActivity extends Activity Called when the activity is first created. @Override public void onCreate..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon Android but Android can very well totally destroy your app whenever it feels like it . What's up with that I am starting to.. functions as a normal app that the user can quit the app when he she decides to do so. That is not something that should be.. The point is that I cannot allow for Android to determine when my app is going to be terminated. that must be the choice of..
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 mProgressDialog.setCancelable true execute this when the downloader must be fired final DownloadTask downloadTask.. a Service runs actually in the same thread of your app when you extends Service you must manually spawn new threads to run..
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 camera. The issue is that I get an out of memory error when it tries to go back and re launch the 2nd activity. Is there.. 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..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables login ... The onActivityResult method which is executed when the login form terminates looks like this @Override public void.. appears twice the login method is called twice and also when the phone keyboard slides the login form appears again and I.. improve this question I wrote this answer back in '09 when Android was relatively new and there were many not well established..
R cannot be resolved - Android error http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error public class ggps extends Activity Called when the activity is first created. @Override public void onCreate.. at the top of your files that use resources especially when you ask Eclipse to sort or otherwise manage imports. This will..
Android - basic gesture detection http://stackoverflow.com/questions/937313/android-basic-gesture-detection In any case I tried this and the methods weren't called when I touched the screen. I really just need a concrete example.. need a concrete example of this working across views. What when and how should I attach this listener I need to be able to detect..
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen LCD Property to the real density always an integer value When you launch the device always select Scale display to real size..
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 android manifest mms share improve this question When I have the exact same problem you describe above Galaxy Nexus..
Stop EditText from gaining focus at Activity startup http://stackoverflow.com/questions/1555109/stop-edittext-from-gaining-focus-at-activity-startup an Android Activity with two elements EditText ListView When my Activity starts the EditText immediately has input focus..
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 question Quoting Streets of Boston from his adt dev post When upgrading the 'Order and Export' of the new 'Android Private..
How to pick an image from gallery (SD Card) for my app in Android? http://stackoverflow.com/questions/2507898/how-to-pick-an-image-from-gallery-sd-card-for-my-app-in-android my app. I have a button and an ImageView in my Activity. When I click the button it would redirect to gallery and I would..
How to draw a path on a map using kml file? http://stackoverflow.com/questions/3109158/how-to-draw-a-path-on-a-map-using-kml-file 2357 coordinates LineString Placemark Document kml When I'm loading this file to standard web google map it displays..
http://stackoverflow.com/questions/3669325/notifydatasetchanged-example the add insert remove and clear functions on the Adapter. When an ArrayAdapter is constructed it holds the reference for the..
http://stackoverflow.com/questions/3815090/webview-and-html5-video steps I had to follow so far Find a properly encoded video When initializing the WebView set the JavaScript Plug ins the WebViewClient..
Running multiple AsyncTasks at the same time — not possible? http://stackoverflow.com/questions/4068984/running-multiple-asynctasks-at-the-same-time-not-possible UPDATE Here is what current 2012 01 27 API says on this When first introduced AsyncTasks were executed serially on a single..
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 a list view with a couple of image buttons on each row. When you click the list row it launches a new activity. I have had..
Auto Scale TextView Text to Fit within Bounds http://stackoverflow.com/questions/5033012/auto-scale-textview-text-to-fit-within-bounds super context attrs defStyle mTextSize getTextSize When text changes set the force resize flag to true and reset the..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context to call activity context OR application context There has been..
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 so many others onPause onStop onDestroy called at the end When are these methods called and how should they be used properly.. but has not yet been killed. The counterpart to onResume . When activity B is launched in front of activity A this callback.. these two scenarios with the isFinishing method. EDIT When the Activity first time loads the events are called as below..
http://stackoverflow.com/questions/8657894/android-facebook-style-slide will show through and still be clickable surprisingly . When the app starts up we scroll the HSV to the offset of the first..
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 not made a selection yet displays the text Select One . When the user clicks the spinner the list of items is displayed and..
How do I link a checkbox for every contact in populated listview? http://stackoverflow.com/questions/10544821/how-do-i-link-a-checkbox-for-every-contact-in-populated-listview false AS EVERY TIME LISTVIEW INFLATE YOUR VIEWS WHEN YOU MOVE THEM SO YOU NEED TO SAVE ALL OF YOUR CHECKBOX STATES..
Android Open and Save files to/from Google Drive SDK http://stackoverflow.com/questions/12164024/android-open-and-save-files-to-from-google-drive-sdk true driveRequest.setKey CLIENT ID YOU GOT WHEN SETTING UP THE CONSOLE BEFORE YOU STARTED CODING driveRequest.setOauthToken..
Android SQLite performance in complex queries http://stackoverflow.com/questions/13401642/android-sqlite-performance-in-complex-queries t p FROM SELECT t._id team_id t.name team_name COUNT CASE WHEN score_home IS NOT NULL THEN 1 END gp COUNT CASE WHEN score_home.. CASE WHEN score_home IS NOT NULL THEN 1 END gp COUNT CASE WHEN score_home score_away THEN 1 END w COUNT CASE WHEN score_home.. CASE WHEN score_home score_away THEN 1 END w COUNT CASE WHEN score_home score_away THEN 1 END t COUNT CASE WHEN score_home..
Stop AsyncTask doInBackground method http://stackoverflow.com/questions/16538714/stop-asynctask-doinbackground-method loaded carName image image ret if carAdapter null WHEN IMAGE IS LOADED NOTIFY THE ADAPTER carAdapter.notifyDataSetChanged..
Android get a cursor only with contacts that have an email listed >android 2.0 http://stackoverflow.com/questions/5205999/android-get-a-cursor-only-with-contacts-that-have-an-email-listed-android-2-0 String order CASE WHEN ContactsContract.Contacts.DISPLAY_NAME NOT LIKE ' @ ' THEN..
ListView, SimpleCursorAdapter, an an EditText filter — why won't it do anything? http://stackoverflow.com/questions/5322412/listview-simplecursoradapter-an-an-edittext-filter-why-wont-it-do-anything like ' ' constraint.toString ' ' null null null CASE WHEN LAST_NAME like ' constraint.toString ' THEN 0 ELSE 1 END LAST_NAME.. because I don't know what it really should do CASE WHEN LAST_NAME like ' constraint.toString ' THEN 0 ELSE 1 END LAST_NAME..
Saving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android import android.os.Bundle import android.widget.TextView public class HelloAndroid extends Activity Called when the activity is first created. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState..
Sending Email in Android using JavaMail API without using the default/built-in app http://stackoverflow.com/questions/2020088/sending-email-in-android-using-javamail-api-without-using-the-default-built-in-a import android.view.View import android.widget.Button public class MailSenderActivity extends Activity Called when the activity is first created. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon of problem Apparently you cannot quit an application in Android but Android can very well totally destroy your app whenever it feels like it . What's up with that I am starting to think that it's impossible to write an app that functions as.. starting to think that it's impossible to write an app that functions as a normal 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.. here for others who come to read this post in the future. The point is that I cannot allow for Android to determine when my app is going to be terminated. that must be the choice of the user. Millions of people are perfectly happy with the model..
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 true mProgressDialog.setProgressStyle ProgressDialog.STYLE_HORIZONTAL mProgressDialog.setCancelable true execute this when the downloader must be fired final DownloadTask downloadTask new DownloadTask YourActivity.this downloadTask.execute the.. a thread to do background work from there you should know that a Service runs actually in the same thread of your app when you extends Service you must manually spawn new threads to run CPU blocking operations . Download service can look like..
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 on the fly. So I just resized the image that came off the phone camera. The issue is that I get an out of memory error when it tries to go back and re launch the 2nd activity. Is there a way I can build the list adapter easily row by row where.. 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 JPEG library in state..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables R.layout.main ... loadSettings if strSessionString null login ... The onActivityResult method which is executed when the login form terminates looks like this @Override public void onActivityResult int requestCode int resultCode Intent data.. 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 anyone.. Thanks android singleton global variables state share improve this question I wrote this answer back in '09 when Android was relatively new and there were many not well established areas in Android development. I have added a long addendum..
R cannot be resolved - Android error http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error eu.mauriziopz.gps import android.app.Activity import android.os.Bundle public class ggps extends Activity Called when the activity is first created. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState.. Eclipse sometimes likes to add an import android.R statement at the top of your files that use resources especially when you ask Eclipse to sort or otherwise manage imports. This will cause your make to break. Look out for these erroneous import..
Android - basic gesture detection http://stackoverflow.com/questions/937313/android-basic-gesture-detection to tell the activity that a fling has occurred from the view. In any case I tried this and the methods weren't called when I touched the screen. I really just need a concrete example of this working across views. What when and how should I attach.. weren't called when I touched the screen. I really just need a concrete example of 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..
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen to match the real device in the Hardware pane set Abstracted LCD Property to the real density always an integer value When you launch the device always select Scale display to real size and type in the real screen dimension in inches. If you don't..
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 APN setting present in the device android sms broadcastreceiver android manifest mms share improve this question When I have the exact same problem you describe above Galaxy Nexus on t mobile USA it is because mobile data is turned off. In..
Stop EditText from gaining focus at Activity startup http://stackoverflow.com/questions/1555109/stop-edittext-from-gaining-focus-at-activity-startup EditText from gaining focus at Activity startup I have an Android Activity with two elements EditText ListView When my Activity starts the EditText immediately has input focus flashing cursor . I don't want any control to have input focus..
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 that problem. android eclipse adt share improve this question Quoting Streets of Boston from his adt dev post When upgrading the 'Order and Export' of the new 'Android Private Libraries' is not always checked. And the android support v4.jar..
How to pick an image from gallery (SD Card) for my app in Android? http://stackoverflow.com/questions/2507898/how-to-pick-an-image-from-gallery-sd-card-for-my-app-in-android asked for Android 1.6. I am working on photos options in my app. I have a button and an ImageView in my Activity. When I click the button it would redirect to gallery and I would be able to select an image. The selected image would appear..
How to draw a path on a map using kml file? http://stackoverflow.com/questions/3109158/how-to-draw-a-path-on-a-map-using-kml-file 36.08627897945274 2357 112.2656969554589 36.08649599090644 2357 coordinates LineString Placemark Document kml When I'm loading this file to standard web google map it displays it nicely but when I'm trying the same thing with android google..
http://stackoverflow.com/questions/3669325/notifydatasetchanged-example an ArrayAdapter notifyDataSetChanged only works if you use the add insert remove and clear functions on the Adapter. When an ArrayAdapter is constructed it holds the reference for the List that was passed in. If you were to pass in a List that..
http://stackoverflow.com/questions/3815090/webview-and-html5-video must say I had to deal with it for few days. These are the steps I had to follow so far Find a properly encoded video When initializing the WebView set the JavaScript Plug ins the WebViewClient and the WebChromeClient. url new String http broken..
Running multiple AsyncTasks at the same time — not possible? http://stackoverflow.com/questions/4068984/running-multiple-asynctasks-at-the-same-time-not-possible I don't remember in what version exactly they changed that. UPDATE Here is what current 2012 01 27 API says on this When first introduced AsyncTasks were executed serially on a single background thread. Starting with DONUT this was changed to..
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 memory issue while loading an image to a Bitmap object I have a list view with a couple of image buttons on each row. When you click the list row it launches a new activity. I have had to build my own tabs because of an issue with the camera layout...
Auto Scale TextView Text to Fit within Bounds http://stackoverflow.com/questions/5033012/auto-scale-textview-text-to-fit-within-bounds AutoResizeTextView Context context AttributeSet attrs int defStyle super context attrs defStyle mTextSize getTextSize When text changes set the force resize flag to true and reset the text size. @Override protected void onTextChanged final CharSequence..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context to call activity context OR application context There has been a lot of posting about what these two contexts are.. But..
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 onCreate onStart onResume called during initialization and so many others onPause onStop onDestroy called at the end When are these methods called and how should they be used properly android lifecycle oncreate onresume ondestroy share improve.. lifecycle when an activity is going into the background but has not yet been killed. The counterpart to onResume . When activity B is launched in front of activity A this callback will be invoked on A. B will not be created until A's onPause.. of the activity to save space. You can distinguish between these two scenarios with the isFinishing method. EDIT When the Activity first time loads the events are called as below onCreate onStart onResume When you click on Phone button the..
http://stackoverflow.com/questions/8657894/android-facebook-style-slide child. This means when the HSV has zero scroll offset the menu will show through and still be clickable surprisingly . When the app starts up we scroll the HSV to the offset of the first visible application View and when we want to show the menu..
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 I want to use a Spinner that initially when the user has not made a selection yet displays the text Select One . When the user clicks the spinner the list of items is displayed and the user selects one of the options. After the user has made..
How do I link a checkbox for every contact in populated listview? http://stackoverflow.com/questions/10544821/how-do-i-link-a-checkbox-for-every-contact-in-populated-listview receiver new IntentFilter master_check_change set_checked false AS EVERY TIME LISTVIEW INFLATE YOUR VIEWS WHEN YOU MOVE THEM SO YOU NEED TO SAVE ALL OF YOUR CHECKBOX STATES IN SOME ARRAYLIST OTHERWISE IT WILL SET ANY DEFAULT VALUE...
Android Open and Save files to/from Google Drive SDK http://stackoverflow.com/questions/12164024/android-open-and-save-files-to-from-google-drive-sdk driveRequest DriveRequest request driveRequest.setPrettyPrint true driveRequest.setKey CLIENT ID YOU GOT WHEN SETTING UP THE CONSOLE BEFORE YOU STARTED CODING driveRequest.setOauthToken token final Drive drive b.build final com.google.api.services.drive.model.File..
Android SQLite performance in complex queries http://stackoverflow.com/questions/13401642/android-sqlite-performance-in-complex-queries t t SUM l l SUM GO go SUM GA ga SUM GO SUM GA score SUM 2 w t p FROM SELECT t._id team_id t.name team_name COUNT CASE WHEN score_home IS NOT NULL THEN 1 END gp COUNT CASE WHEN score_home score_away THEN 1 END w COUNT CASE WHEN score_home score_away.. 2 w t p FROM SELECT t._id team_id t.name team_name COUNT CASE WHEN score_home IS NOT NULL THEN 1 END gp COUNT CASE WHEN score_home score_away THEN 1 END w COUNT CASE WHEN score_home score_away THEN 1 END t COUNT CASE WHEN score_home score_away.. COUNT CASE WHEN score_home IS NOT NULL THEN 1 END gp COUNT CASE WHEN score_home score_away THEN 1 END w COUNT CASE WHEN score_home score_away THEN 1 END t COUNT CASE WHEN score_home score_away THEN 1 END l SUM score_home go SUM score_away..
Stop AsyncTask doInBackground method http://stackoverflow.com/questions/16538714/stop-asynctask-doinbackground-method Bitmap ret if ret null Log.i ImageLoadTask Successfully loaded carName image image ret if carAdapter null WHEN IMAGE IS LOADED NOTIFY THE ADAPTER carAdapter.notifyDataSetChanged else Log.e ImageLoadTask Failed to load carName image..
Android get a cursor only with contacts that have an email listed >android 2.0 http://stackoverflow.com/questions/5205999/android-get-a-cursor-only-with-contacts-that-have-an-email-listed-android-2-0 ContactsContract.CommonDataKinds.Email.DATA ContactsContract.CommonDataKinds.Photo.CONTACT_ID String order CASE WHEN ContactsContract.Contacts.DISPLAY_NAME NOT LIKE ' @ ' THEN 1 ELSE 2 END ContactsContract.Contacts.DISPLAY_NAME ContactsContract.CommonDataKinds.Email.DATA..
ListView, SimpleCursorAdapter, an an EditText filter — why won't it do anything? http://stackoverflow.com/questions/5322412/listview-simplecursoradapter-an-an-edittext-filter-why-wont-it-do-anything directoryPeople.PEOPLE_TABLE asColumnsToReturn LAST_NAME like ' ' constraint.toString ' ' null null null CASE WHEN LAST_NAME like ' constraint.toString ' THEN 0 ELSE 1 END LAST_NAME I've tried every example and answer I've come across.. like new String value null null null I skipped the last argument because I don't know what it really should do CASE WHEN LAST_NAME like ' constraint.toString ' THEN 0 ELSE 1 END LAST_NAME Have you tried this query in shell in emulator share..
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