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2014/10/16 ¤W¤È 08:23:03
android Programming Glossary: roughlyHow to handle screen orientation change when progress dialog and background thread active? http://stackoverflow.com/questions/1111980/how-to-handle-screen-orientation-change-when-progress-dialog-and-background-thre change gracefully The sample code below matches roughly what my real program does public class MyAct extends Activity..
about android image size and assets sizes http://stackoverflow.com/questions/11581649/about-android-image-size-and-assets-sizes 72 96 x 96 144 x 144 192 x 192 And these should display at roughly the same size on any device provided you've placed these in..
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen 7 inches Most phones are classified as small or normal roughly 3 to 4 inches diagonally . But now there are many phones with..
How to ignore accent in SQLite query (Android) http://stackoverflow.com/questions/16282083/how-to-ignore-accent-in-sqlite-query-android ASCII code points since NFD represents accented characters roughly as plain ASCII combining accent markers String asciiName Normalizer.normalize..
Android: BitmapFactory.decodeByteArray gives pixelated bitmap http://stackoverflow.com/questions/2183808/android-bitmapfactory-decodebytearray-gives-pixelated-bitmap displayed in my app and the picture at the original URL is roughly demonstrated by the following Look e.g. at the clouds in the..
Get the co-ordinates of a touch event on Android http://stackoverflow.com/questions/2939332/get-the-co-ordinates-of-a-touch-event-on-android You will probably put it in your onCreate method roughly this way tested this time Activity onCreate code @Override public..
Android: How to stretch an image to the screen width while maintaining aspect ratio? http://stackoverflow.com/questions/2991110/android-how-to-stretch-an-image-to-the-screen-width-while-maintaining-aspect-ra to download an image of unknown size but which is always roughly square and display it so that it fills the screen horizontally..
Android SQLite database: slow insertion http://stackoverflow.com/questions/3501516/android-sqlite-database-slow-insertion for the 152KB test file which comes down to inserting roughly 200 rows . When I comment out all insert statements but leave..
ANDROID : split the screen in 2 equals parts with 2 listviews http://stackoverflow.com/questions/3968171/android-split-the-screen-in-2-equals-parts-with-2-listviews The first listview could have a few items 0 1 2 up to roughly 10 and the second listview could have many items up to 100 ...
Detect touch press vs long press vs movement? http://stackoverflow.com/questions/4324362/detect-touch-press-vs-long-press-vs-movement which seems to always trigger. For an example of what I roughly want see the Android application DailyStrip it shows an image..
How to create a Looper thread, then send it a message immediately? http://stackoverflow.com/questions/4838207/how-to-create-a-looper-thread-then-send-it-a-message-immediately solution #1 above since the HandlerThread is implemented roughly as follows gotta love open source public void run Looper.prepare..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas Draw background. canvas.drawBitmap bgr 0 0 null Compute roughly ball speed and location. Y int dY Increase or decrease vertical.. 0 reverseBackroundFirst reverseBackroundFirst Compute roughly the ball's speed and location. if ballFingerMove ballY int..
How to create Insecure RFCOMM Socket in Android? http://stackoverflow.com/questions/5308373/how-to-create-insecure-rfcomm-socket-in-android method inside BluetoothDevice that has been present since roughly Android 2.0. The problem with calling hidden methods is that..
Android App , Check for latest app version http://stackoverflow.com/questions/7298106/android-app-check-for-latest-app-version and update checker is fairly easy. Here is my code roughly for it String response SendNetworkUpdateAppRequest Your code..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation calibration that these accelerations should add up to 0 roughly in each direction. However this is not the case and the total..
AsyncTask, must it take such a performance penalty hit…? http://stackoverflow.com/questions/8955458/asynctask-must-it-take-such-a-performance-penalty-hit shows me that my AsyncTask is at default priority run in roughly 10 ms chunks around 4 times per second. I need to set my thread.. url view this fx.execute running as AsyncTask takes roughly ten times longer than just plain load Use these when not running..
How to handle screen orientation change when progress dialog and background thread active? http://stackoverflow.com/questions/1111980/how-to-handle-screen-orientation-change-when-progress-dialog-and-background-thre the threads have been killed. How can I handle the screen orientation change gracefully The sample code below matches roughly what my real program does public class MyAct extends Activity implements Runnable public ProgressDialog mProgress UI has..
about android image size and assets sizes http://stackoverflow.com/questions/11581649/about-android-image-size-and-assets-sizes hdpi xhdpi xxhdpi xxxhdpi 36 x 36 48 x 48 64 x 64 72 x 72 96 x 96 144 x 144 192 x 192 And these should display at roughly the same size on any device provided you've placed these in density specific folders e.g. drawable xhdpi drawable hdpi etc...
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen normal ~4 inches approx large Exceeds 4 inches xlarge Exceeds 7 inches Most phones are classified as small or normal roughly 3 to 4 inches diagonally . But now there are many phones with large screen such as Galaxy S4 HTC One Xperia Z A small tablet..
How to ignore accent in SQLite query (Android) http://stackoverflow.com/questions/16282083/how-to-ignore-accent-in-sqlite-query-android your strings to Unicode Normal Form D NFD and removing non ASCII code points since NFD represents accented characters roughly as plain ASCII combining accent markers String asciiName Normalizer.normalize unicodeName Normalizer.Form.NFD .replaceAll..
Android: BitmapFactory.decodeByteArray gives pixelated bitmap http://stackoverflow.com/questions/2183808/android-bitmapfactory-decodebytearray-gives-pixelated-bitmap objects with no luck. The difference between the picture displayed in my app and the picture at the original URL is roughly demonstrated by the following Look e.g. at the clouds in the top left corner to see the difference. Note that JPEG pictures..
Get the co-ordinates of a touch event on Android http://stackoverflow.com/questions/2939332/get-the-co-ordinates-of-a-touch-event-on-android view View.html#setOnTouchListener android.view.View.OnTouchListener You will probably put it in your onCreate method roughly this way tested this time Activity onCreate code @Override public void onCreate Bundle savedInstanceState super.onCreate..
Android: How to stretch an image to the screen width while maintaining aspect ratio? http://stackoverflow.com/questions/2991110/android-how-to-stretch-an-image-to-the-screen-width-while-maintaining-aspect-ra to the screen width while maintaining aspect ratio I want to download an image of unknown size but which is always roughly square and display it so that it fills the screen horizontally and stretches vertically to maintain the aspect ratio of..
Android SQLite database: slow insertion http://stackoverflow.com/questions/3501516/android-sqlite-database-slow-insertion _id values . All of this together takes about 80 seconds for the 152KB test file which comes down to inserting roughly 200 rows . When I comment out all insert statements but leave in everything else such as creating ContentValues etc. the..
ANDROID : split the screen in 2 equals parts with 2 listviews http://stackoverflow.com/questions/3968171/android-split-the-screen-in-2-equals-parts-with-2-listviews is that I don't know the size of each listview in advance. The first listview could have a few items 0 1 2 up to roughly 10 and the second listview could have many items up to 100 . I tried to set the weight of both listviews at 1 but it did..
Detect touch press vs long press vs movement? http://stackoverflow.com/questions/4324362/detect-touch-press-vs-long-press-vs-movement out how to detect a long press. The culprit really is the MOVE which seems to always trigger. For an example of what I roughly want see the Android application DailyStrip it shows an image of a comic strip. You can drag it if it's too large for the..
How to create a Looper thread, then send it a message immediately? http://stackoverflow.com/questions/4838207/how-to-create-a-looper-thread-then-send-it-a-message-immediately has been initialized. Incidentally this is similar to my solution #1 above since the HandlerThread is implemented roughly as follows gotta love open source public void run Looper.prepare synchronized this mLooper Looper.myLooper notifyAll Looper.loop..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas @Override public void onDraw Canvas canvas super.onDraw canvas Draw background. canvas.drawBitmap bgr 0 0 null Compute roughly ball speed and location. Y int dY Increase or decrease vertical position. if Y screenH ballH dY 1 dY Reverse speed when.. the background's position. if bgrScroll dBgrY bgrW bgrScroll 0 reverseBackroundFirst reverseBackroundFirst Compute roughly the ball's speed and location. if ballFingerMove ballY int dY Increase or decrease vertical position. if ballY screenH..
How to create Insecure RFCOMM Socket in Android? http://stackoverflow.com/questions/5308373/how-to-create-insecure-rfcomm-socket-in-android via reflection createInsecureRfcommSocket is a private method inside BluetoothDevice that has been present since roughly Android 2.0. The problem with calling hidden methods is that they aren't guaranteed to be there on all devices or in the..
Android App , Check for latest app version http://stackoverflow.com/questions/7298106/android-app-check-for-latest-app-version which will cause it to check for updates. Otherwise implementing and update checker is fairly easy. Here is my code roughly for it String response SendNetworkUpdateAppRequest Your code to do the network request should send the current version..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation readings in the X and Y directions. I would expect given the calibration that these accelerations should add up to 0 roughly in each direction. However this is not the case and the total acceleration over 5000 iterations is nowhere near 0 averaging..
AsyncTask, must it take such a performance penalty hit…? http://stackoverflow.com/questions/8955458/asynctask-must-it-take-such-a-performance-penalty-hit which is unacceptable. Tracking down the problem TraceView shows me that my AsyncTask is at default priority run in roughly 10 ms chunks around 4 times per second. I need to set my thread priority to MAX_PRIORITY to get close to acceptable loading.. 15 seconds AsyncTask Void String String fx new FilterX url view this fx.execute running as AsyncTask takes roughly ten times longer than just plain load Use these when not running as AsyncTask FAST takes ~5 seconds FilterX fx new FilterX..
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