¡@
2014/10/16 ¤W¤È 08:26:50
android Programming Glossary: typicalAndroid App Crashes Suddenly while running? http://stackoverflow.com/questions/11190469/android-app-crashes-suddenly-while-running running What my App does The App I am developing is a typical client server App which talks to a windows server using Wifi...
HttpURLConnection worked fine in Android 2.x but NOT in 4.1: No authentication challenges found http://stackoverflow.com/questions/11810447/httpurlconnection-worked-fine-in-android-2-x-but-not-in-4-1-no-authentication-c NOT in 4.1 No authentication challenges found I have some typical codes which used HttpURLConnection to get a file with an URL...
Is Google's Android OpenGL tutorial teaching incorrect linear algebra? http://stackoverflow.com/questions/11925647/is-googles-android-opengl-tutorial-teaching-incorrect-linear-algebra their convention is column vector column major which is typical of OpenGL. Am I right or is there something I am missing Here..
How do I know the map is ready to get used when using the SupportMapFragment? http://stackoverflow.com/questions/14047257/how-do-i-know-the-map-is-ready-to-get-used-when-using-the-supportmapfragment the SupportMapFragment via the constructor is because the typical setContentView was crashing and did not work. This put me in..
Struggling between native and phonegap, simple app requirements http://stackoverflow.com/questions/14065610/struggling-between-native-and-phonegap-simple-app-requirements bigger budgets and longer time to market that are more typical of fully native apps. Cons You will piss blood after some time..
Detect 7 inch and 10 inch tablet programmatically http://stackoverflow.com/questions/15055458/detect-7-inch-and-10-inch-tablet-programmatically give you the relative dp for each screen size 320dp a typical phone screen 240x320 ldpi 320x480 mdpi 480x800 hdpi etc . 480dp..
Is there any example about Spanned and Spannable text http://stackoverflow.com/questions/2159847/is-there-any-example-about-spanned-and-spannable-text to a specific questions rather than a general one . A typical Spannable example is something like this to turn selected text..
How do I load a contact Photo? http://stackoverflow.com/questions/2383580/how-do-i-load-a-contact-photo return thumbnail finally cursor.close And here's a typical use case inside an activity String phoneNumber ... QuickContactBadge..
Android - UI for text wrap an image http://stackoverflow.com/questions/2474012/android-ui-for-text-wrap-an-image there anyway to wrap a TextView around an image It's the typical thing that people do in CSS like this http www.echoecho.com..
http://stackoverflow.com/questions/2915150/log4j-support-in-android bridge. The latter defines the core log4j classes used by typical implementations and bind them to the slf4j Android implementation...
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 this will be useful so that you can show a typical 0 100 progress bar int fileLength connection.getContentLength..
Eclipse Android SDK slow Content Assist performance http://stackoverflow.com/questions/3953012/eclipse-android-sdk-slow-content-assist-performance
Android question: implementing a rich text editor? http://stackoverflow.com/questions/4283755/android-question-implementing-a-rich-text-editor can see this is pretty much something quite similar to a typical RichEdit control on Windows. Here are some efforts investigation..
Concise way of writing new DialogPreference classes? http://stackoverflow.com/questions/4505845/concise-way-of-writing-new-dialogpreference-classes this example of a number preference dialog is fairly typical http svn.jimblackler.net jimblackler trunk workspace NewsWidget..
Is it possible to run a native arm binary on a non-rooted android phone? http://stackoverflow.com/questions/4703131/is-it-possible-to-run-a-native-arm-binary-on-a-non-rooted-android-phone your binaries it is possible to package them with a typical Android app and have them spawn as subprocesses. You'll have..
Enable GPS programatically like Tasker http://stackoverflow.com/questions/4721449/enable-gps-programatically-like-tasker the user if he wants to turn it on automatically with the typical remember my decision checkbox and if he answers yes enable it...
What optimizations can I expect from Dalvik and the Android toolchain? http://stackoverflow.com/questions/4912695/what-optimizations-can-i-expect-from-dalvik-and-the-android-toolchain eliminate this in certain conditions like the archetypical for loop Value inlining. Will accesses to some public static.. is this even Is branching a large performance hit on a typical Android device Simple arithmetic. Will someInt 2 be replaced..
Android backup/restore: how to backup an internal database? http://stackoverflow.com/questions/5282936/android-backup-restore-how-to-backup-an-internal-database the native database I have. This is the database you typically use along with ContentProviders and which resides in data.. . There is no BackupHelper specifically for these typical databases. Hence I used the FileBackupHelper pointed it to my..
What arguments are passed into AsyncTask<arg1, arg2, arg3>? http://stackoverflow.com/questions/6053602/what-arguments-are-passed-into-asynctaskarg1-arg2-arg3 by refering Sankar Ganesh's Blog Well The structure of a typical AsyncTask class goes like private class MyTask extends AsyncTask..
Android screen size HDPI, LDPI, MDPI http://stackoverflow.com/questions/6166677/android-screen-size-hdpi-ldpi-mdpi Extract from Android Developer Guide link above 320dp a typical phone screen 240x320 ldpi 320x480 mdpi 480x800 hdpi etc . 480dp..
What's the best way to iterate an Android Cursor? http://stackoverflow.com/questions/10723770/whats-the-best-way-to-iterate-an-android-cursor with each row and then moving on to the next row. Typical examples are as follows. Cursor cursor db.rawQuery ... cursor.moveToFirst..
NullPointerException on onSaveInstanceState with AndroidFragments http://stackoverflow.com/questions/12217681/nullpointerexception-on-onsaveinstancestate-with-androidfragments R.string.mastercattab4 .toUpperCase return null A Typical Fragment has an outline like this public static class FeaturedFrag..
How do you stop Proguard from removing type parameters? http://stackoverflow.com/questions/12924425/how-do-you-stop-proguard-from-removing-type-parameters share improve this question According to the ProGuard Typical Library usage guide The Signature attribute is required to be..
Android Compass that can Compensate for Tilt and Pitch http://stackoverflow.com/questions/16317599/android-compass-that-can-compensate-for-tilt-and-pitch East_z if m_Norm_Gravity m_Norm_MagField norm_East 0.1f Typical values are 100. m_OrientationOK false device is close to free..
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 being used for filesystem caches and other such things. Typical systems will need to have 20MB or so for this to avoid getting..
http://stackoverflow.com/questions/3572463/what-is-context-in-android newly created objects understand what has been going on. Typically you call it to get information regarding another part of your.. getBaseContext or this when in the activity class . Typical uses of context Creating New objects Creating new views adapters..
Can Honeycomb Loaders solve problems with AsyncTask + UI update? http://stackoverflow.com/questions/5097565/can-honeycomb-loaders-solve-problems-with-asynctask-ui-update correctly in Android. It's simply badly designed. Typical example is an AsyncTask that fetches something from the web..
Android App Crashes Suddenly while running? http://stackoverflow.com/questions/11190469/android-app-crashes-suddenly-while-running App Crashes Suddenly while running What my App does The App I am developing is a typical client server App which talks to a windows server using Wifi. The Application has multiple Activities and really has heavy..
HttpURLConnection worked fine in Android 2.x but NOT in 4.1: No authentication challenges found http://stackoverflow.com/questions/11810447/httpurlconnection-worked-fine-in-android-2-x-but-not-in-4-1-no-authentication-c worked fine in Android 2.x but NOT in 4.1 No authentication challenges found I have some typical codes which used HttpURLConnection to get a file with an URL. They worked fine in android 1.x and 2.x. But failed in Android..
Is Google's Android OpenGL tutorial teaching incorrect linear algebra? http://stackoverflow.com/questions/11925647/is-googles-android-opengl-tutorial-teaching-incorrect-linear-algebra all mixed up to me. On the Android Matrix page they claim that their convention is column vector column major which is typical of OpenGL. Am I right or is there something I am missing Here are the relevant bits of it Start out by creating a MVPMatrix..
How do I know the map is ready to get used when using the SupportMapFragment? http://stackoverflow.com/questions/14047257/how-do-i-know-the-map-is-ready-to-get-used-when-using-the-supportmapfragment reference to add markers. UPDATE The reason I was creating the SupportMapFragment via the constructor is because the typical setContentView was crashing and did not work. This put me in the predicament where I could not obtain my reference in the..
Struggling between native and phonegap, simple app requirements http://stackoverflow.com/questions/14065610/struggling-between-native-and-phonegap-simple-app-requirements device coverage while not requiring the specialized skills bigger budgets and longer time to market that are more typical of fully native apps. Cons You will piss blood after some time literally and metaphorically. Mobile phones even today's..
Detect 7 inch and 10 inch tablet programmatically http://stackoverflow.com/questions/15055458/detect-7-inch-and-10-inch-tablet-programmatically in conjunction with the Android Configuration examples which give you the relative dp for each screen size 320dp a typical phone screen 240x320 ldpi 320x480 mdpi 480x800 hdpi etc . 480dp a tweener tablet like the Streak 480x800 mdpi . 600dp a..
Is there any example about Spanned and Spannable text http://stackoverflow.com/questions/2159847/is-there-any-example-about-spanned-and-spannable-text hard to answer your questions short answer rewrite your question to a specific questions rather than a general one . A typical Spannable example is something like this to turn selected text in an EditText into Italic Spannable str mBodyText.getText..
How do I load a contact Photo? http://stackoverflow.com/questions/2383580/how-do-i-load-a-contact-photo thumbnailBytes 0 thumbnailBytes.length return thumbnail finally cursor.close And here's a typical use case inside an activity String phoneNumber ... QuickContactBadge badge QuickContactBadge view.findViewById R.id.friend..
Android - UI for text wrap an image http://stackoverflow.com/questions/2474012/android-ui-for-text-wrap-an-image UI for text wrap an image Is there anyway to wrap a TextView around an image It's the typical thing that people do in CSS like this http www.echoecho.com htmlimages08.htm Thanks Tee android share improve this question..
http://stackoverflow.com/questions/2915150/log4j-support-in-android over slf4j http www.slf4j.org legacy.html#log4j over slf4j bridge. The latter defines the core log4j classes used by typical implementations and bind them to the slf4j Android implementation. Once the libraries are added the code works. share improve..
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 URLConnection connection url.openConnection connection.connect this will be useful so that you can show a typical 0 100 progress bar int fileLength connection.getContentLength download the file InputStream input new BufferedInputStream..
Eclipse Android SDK slow Content Assist performance http://stackoverflow.com/questions/3953012/eclipse-android-sdk-slow-content-assist-performance
Android question: implementing a rich text editor? http://stackoverflow.com/questions/4283755/android-question-implementing-a-rich-text-editor inside a cell is editable not the table structure As you can see this is pretty much something quite similar to a typical RichEdit control on Windows. Here are some efforts investigation prototyping I have made so far Using WebView I have tried..
Concise way of writing new DialogPreference classes? http://stackoverflow.com/questions/4505845/concise-way-of-writing-new-dialogpreference-classes as there appears to be a lot of behaviour to test. For instance this example of a number preference dialog is fairly typical http svn.jimblackler.net jimblackler trunk workspace NewsWidget src net jimblackler newswidget NumberPreference.java In..
Is it possible to run a native arm binary on a non-rooted android phone? http://stackoverflow.com/questions/4703131/is-it-possible-to-run-a-native-arm-binary-on-a-non-rooted-android-phone After using the toolchain included in the Android NDK to compile your binaries it is possible to package them with a typical Android app and have them spawn as subprocesses. You'll have to include all the necessary files within the assets folder..
Enable GPS programatically like Tasker http://stackoverflow.com/questions/4721449/enable-gps-programatically-like-tasker don't want to blow up the users privacy so I would first ask the user if he wants to turn it on automatically with the typical remember my decision checkbox and if he answers yes enable it. Does anybody have any idea or clue on how Tasker achieves..
What optimizations can I expect from Dalvik and the Android toolchain? http://stackoverflow.com/questions/4912695/what-optimizations-can-i-expect-from-dalvik-and-the-android-toolchain of a for loop Bounds checking on array lookups. Will the toolchain eliminate this in certain conditions like the archetypical for loop Value inlining. Will accesses to some public static final int always be inlined Even if they're in another class.. they're in another package Branch prediction. How big an issue is this even Is branching a large performance hit on a typical Android device Simple arithmetic. Will someInt 2 be replaced by someInt 1 Etcetera... java android optimization dalvik..
Android backup/restore: how to backup an internal database? http://stackoverflow.com/questions/5282936/android-backup-restore-how-to-backup-an-internal-database using the provided FileBackupHelper to backup and restore the native database I have. This is the database you typically use along with ContentProviders and which resides in data data yourpackage databases . One would think this is a common.. what to do http developer.android.com guide topics data backup.html . There is no BackupHelper specifically for these typical databases. Hence I used the FileBackupHelper pointed it to my .db file in databases introduced locks around any db operation..
What arguments are passed into AsyncTask<arg1, arg2, arg3>? http://stackoverflow.com/questions/6053602/what-arguments-are-passed-into-asynctaskarg1-arg2-arg3 AsyncTask.html Or You Can clear whats the role of AsyncTask by refering Sankar Ganesh's Blog Well The structure of a typical AsyncTask class goes like private class MyTask extends AsyncTask X Y Z protected void onPreExecute This method is executed..
Android screen size HDPI, LDPI, MDPI http://stackoverflow.com/questions/6166677/android-screen-size-hdpi-ldpi-mdpi 240 is hdpi 160 is mdpi and below that are usually ldpi. Extract from Android Developer Guide link above 320dp a typical phone screen 240x320 ldpi 320x480 mdpi 480x800 hdpi etc . 480dp a tweener tablet like the Streak 480x800 mdpi . 600dp a..
What's the best way to iterate an Android Cursor? http://stackoverflow.com/questions/10723770/whats-the-best-way-to-iterate-an-android-cursor are iterating over the result of a database query doing something with each row and then moving on to the next row. Typical examples are as follows. Cursor cursor db.rawQuery ... cursor.moveToFirst while cursor.isAfterLast false ... cursor.moveToNext..
NullPointerException on onSaveInstanceState with AndroidFragments http://stackoverflow.com/questions/12217681/nullpointerexception-on-onsaveinstancestate-with-androidfragments R.string.mastercattab3 .toUpperCase case 3 return getString R.string.mastercattab4 .toUpperCase return null A Typical Fragment has an outline like this public static class FeaturedFrag extends Fragment public FeaturedFrag @Override public..
How do you stop Proguard from removing type parameters? http://stackoverflow.com/questions/12924425/how-do-you-stop-proguard-from-removing-type-parameters java.lang.Object readResolve java android maven proguard share improve this question According to the ProGuard Typical Library usage guide The Signature attribute is required to be able to access generic types when compiling in JDK 5.0 and..
Android Compass that can Compensate for Tilt and Pitch http://stackoverflow.com/questions/16317599/android-compass-that-can-compensate-for-tilt-and-pitch norm_East float Math.sqrt East_x East_x East_y East_y East_z East_z if m_Norm_Gravity m_Norm_MagField norm_East 0.1f Typical values are 100. m_OrientationOK false device is close to free fall or in space or close to magnetic north pole. else m_NormEastVector..
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 available memory to keep processes running Cached is the RAM being used for filesystem caches and other such things. Typical systems will need to have 20MB or so for this to avoid getting into bad paging states the Android out of memory killer is..
http://stackoverflow.com/questions/3572463/what-is-context-in-android context of current state of the application object. It lets newly created objects understand what has been going on. Typically you call it to get information regarding another part of your program activity package application You can get the context.. can get the context by invoking getApplicationContext getContext getBaseContext or this when in the activity class . Typical uses of context Creating New objects Creating new views adapters listeners TextView tv new TextView getContext ListAdapter..
Can Honeycomb Loaders solve problems with AsyncTask + UI update? http://stackoverflow.com/questions/5097565/can-honeycomb-loaders-solve-problems-with-asynctask-ui-update in background and then updating UI is very hard to implement correctly in Android. It's simply badly designed. Typical example is an AsyncTask that fetches something from the web and displays the result. There are 2 problems with this The..
|