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2014/10/16 ¤W¤È 08:24:22
android Programming Glossary: slowDraw text in OpenGL ES (Android) http://stackoverflow.com/questions/1339136/draw-text-in-opengl-es-android options. Place a TextView over your SurfaceView. This is slow and bad but the most direct approach. Render common strings..
Google maps api v2 custom infowindow like in original android google maps http://stackoverflow.com/questions/14123243/google-maps-api-v2-custom-infowindow-like-in-original-android-google-maps IMHO you can't make it look good enough especially on some slow devices. If you do it the simple way it jumps around from one.. ugly and I'm not sure how would it work on some older slow devices but I suspect that even the map framework itself does..
How to maintain multi layers of ImageViews and keep their aspect ratio based on the largest one? http://stackoverflow.com/questions/16729169/how-to-maintain-multi-layers-of-imageviews-and-keep-their-aspect-ratio-based-on size but that could take a lot of memory and become very slow when animating or dragging views. It would be a huge waste if..
http://stackoverflow.com/questions/1784786/mathml-and-java system point 4 of your list . Maybe that JEuclid is to slow especially at startup for rendering MathML on a mobile phone..
OpenGL extensions available on different Android devices [closed] http://stackoverflow.com/questions/2093594/opengl-extensions-available-on-different-android-devices of drawing sprites the basic way using vertex arrays slow using vertex buffer objects VBOs faster using the draw_texture..
Custom fonts and XML layouts (Android) http://stackoverflow.com/questions/2376250/custom-fonts-and-xml-layouts-android Java to make this change but this would probably be very slow. What other options do I have Is there any better ways to making..
Effective Android Programming Techniques [closed] http://stackoverflow.com/questions/2961049/effective-android-programming-techniques monitors Working on your laptop in the coffee shop will slow you down. You need to spread out windows. At very least you.. After the first couple of layout screens stop using the slow moving 'properties' gui to change properties. Drop the items..
Is AsyncTask really conceptually flawed or am I just missing something? http://stackoverflow.com/questions/3357477/is-asynctask-really-conceptually-flawed-or-am-i-just-missing-something context e.g. after a screen orientation change. This is slow and wasteful. My solution to this as implemented in the Droid..
Android SQLite database: slow insertion http://stackoverflow.com/questions/3501516/android-sqlite-database-slow-insertion SQLite database slow insertion I need to parse a fairly large XML file varying between..
How can I update a single row in a ListView? http://stackoverflow.com/questions/3724874/how-can-i-update-a-single-row-in-a-listview Problems I have with my current approach are Scrolling is slow I have a fade in animation on the image which happens every..
how do you pass images (bitmaps) between android activities using bundles? http://stackoverflow.com/questions/4352172/how-do-you-pass-images-bitmaps-between-android-activities-using-bundles want to do it but it costs a lot of memory and is also slow. It might not work if you have an older phone and a big bitmap...
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue http://stackoverflow.com/questions/4354939/understanding-the-use-of-colormatrix-and-colormatrixcolorfilter-to-modify-a-draw each of these in code and modifying all of them and how slow a process it would be. Hmm okay so I suppose another question..
Upgraded to SDK 2.3 - now no emulators have connectivity http://stackoverflow.com/questions/4376553/upgraded-to-sdk-2-3-now-no-emulators-have-connectivity used to work OK with SDK 2.1 although code completion was slow . SDK 2.3 emulators are still failing to connect. If you are..
Android - What's the best way to share data between activities? http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities before using Serializable it's error prone and horribly slow. So in general stay away from Serializable if possible. If you.. thus more chance of introducing bugs. It will also be much slower. Some of the ways to persist objects include Save them to..
Can the Android emulator record and play back audio using pc hardware? http://stackoverflow.com/questions/5254994/can-the-android-emulator-record-and-play-back-audio-using-pc-hardware it works. However the recorded audio did sound a bit weird slow in my case. I did not investigate the cause. You need to add..
Benefit of using Parcelable instead of serializing object http://stackoverflow.com/questions/5550670/benefit-of-using-parcelable-instead-of-serializing-object the conclusion that the serialization in Java is far too slow to satisfy Android ™s interprocess communication requirements...
Where to stop/destroy threads in Android Service class? http://stackoverflow.com/questions/680180/where-to-stop-destroy-threads-in-android-service-class ... After I close the application the phone works really slow and I guess it is due to thread termination failure. Does anyone.. to Threads should ensure that your app doesn't hang or slow down the phone though they can be quite complex share improve..
AsyncTask.executeOnExecutor() before API Level 11 http://stackoverflow.com/questions/7211684/asynctask-executeonexecutor-before-api-level-11
Complete Working Sample of the Gmail Three-Fragment Animation Scenario? http://stackoverflow.com/questions/12253965/complete-working-sample-of-the-gmail-three-fragment-animation-scenario should fit better Demo video with the animation Here Slow frame rate cause of the screen cast. Actual performance is very..
Punch a hole in a rectangle overlay with HW acceleration enabled on View http://stackoverflow.com/questions/13528550/punch-a-hole-in-a-rectangle-overlay-with-hw-acceleration-enabled-on-view and the other is too slow. Method 1 SW Acceleration Slow final int saveCount canvas.save Clip out a circle. circle.reset.. but I'd like to avoid that . Method 2 HW Acceleration V. Slow Create a new canvas. final Bitmap b Bitmap.createBitmap getWidth..
http://stackoverflow.com/questions/1554099/slow-android-emulator Android emulator I have a 2.67 GHz Celeron processor 1.21 GB..
Lazy Load images on Listview in android(Beginner Level)? [duplicate] http://stackoverflow.com/questions/2912054/lazy-load-images-on-listview-in-androidbeginner-level Thanks. EDIT The combination of Efficient and Slow Adapter in ApiDemos is more helpful to understand. changes done..
Problem with large number of markers on the map http://stackoverflow.com/questions/4710098/problem-with-large-number-of-markers-on-the-map show all of them and zooming and panning is not that bad. Slow down is noticeable but still acceptable. I personally think..
SQLite or SharedPreferences for persistent data storage? http://stackoverflow.com/questions/4909701/sqlite-or-sharedpreferences-for-persistent-data-storage to debug Config file can be edited by hand if need be Con Slow when dealing with lots of data Not helpful when the data is..
Issues with SHA1 hash implementation in Android http://stackoverflow.com/questions/6350657/issues-with-sha1-hash-implementation-in-android byteArrayOutputStream.close dis.close Slow version MessageDigest algorithm MessageDigest.getInstance SHA1..
Draw text in OpenGL ES (Android) http://stackoverflow.com/questions/1339136/draw-text-in-opengl-es-android to draw text on OpenGL views. Leaving you with the following options. Place a TextView over your SurfaceView. This is slow and bad but the most direct approach. Render common strings to textures and simply draw those textures. This is by far the..
Google maps api v2 custom infowindow like in original android google maps http://stackoverflow.com/questions/14123243/google-maps-api-v2-custom-infowindow-like-in-original-android-google-maps which is possible by listening to some onTouch events but IMHO you can't make it look good enough especially on some slow devices. If you do it the simple way it jumps around from one spot to another. You could also use some animations to polish.. the button in it's pressed state a little. This is also quite ugly and I'm not sure how would it work on some older slow devices but I suspect that even the map framework itself does something like this. You can try it yourself when you click..
How to maintain multi layers of ImageViews and keep their aspect ratio based on the largest one? http://stackoverflow.com/questions/16729169/how-to-maintain-multi-layers-of-imageviews-and-keep-their-aspect-ratio-based-on The easy way is to make sure all layers have the exact same size but that could take a lot of memory and become very slow when animating or dragging views. It would be a huge waste if some of the layers have a very small content. android android..
http://stackoverflow.com/questions/1784786/mathml-and-java for rendering MathML in my Symja project Java symbolic math system point 4 of your list . Maybe that JEuclid is to slow especially at startup for rendering MathML on a mobile phone Other alternatives for rendering math expressions with TeX..
OpenGL extensions available on different Android devices [closed] http://stackoverflow.com/questions/2093594/opengl-extensions-available-on-different-android-devices game s . Currently I'm supporting three different techniques of drawing sprites the basic way using vertex arrays slow using vertex buffer objects VBOs faster using the draw_texture extension fastest but only for basic sprites i.e. no transforming..
Custom fonts and XML layouts (Android) http://stackoverflow.com/questions/2376250/custom-fonts-and-xml-layouts-android IDs. Alternatively I could iterate over all the widgets in Java to make this change but this would probably be very slow. What other options do I have Is there any better ways to making widgets that have a custom look I don't particularly want..
Effective Android Programming Techniques [closed] http://stackoverflow.com/questions/2961049/effective-android-programming-techniques spent ten minutes trying to figure it out on your own. Use two monitors Working on your laptop in the coffee shop will slow you down. You need to spread out windows. At very least you will want a full screen Eclipse session the emulator and a browser.. shift ctrl F to format it. Edit XML files with the text editor After the first couple of layout screens stop using the slow moving 'properties' gui to change properties. Drop the items using the gui. Use the up down arrows on the far right outline..
Is AsyncTask really conceptually flawed or am I just missing something? http://stackoverflow.com/questions/3357477/is-asynctask-really-conceptually-flawed-or-am-i-just-missing-something means that you have to re start any tasks when re creating the context e.g. after a screen orientation change. This is slow and wasteful. My solution to this as implemented in the Droid Fu library is to maintain a mapping of WeakReference s from..
Android SQLite database: slow insertion http://stackoverflow.com/questions/3501516/android-sqlite-database-slow-insertion SQLite database slow insertion I need to parse a fairly large XML file varying between about a hundred kilobytes and several hundred kilobytes..
How can I update a single row in a ListView? http://stackoverflow.com/questions/3724874/how-can-i-update-a-single-row-in-a-listview update just the single item in the list. How would I do this Problems I have with my current approach are Scrolling is slow I have a fade in animation on the image which happens every time a single new image in the list is loaded. android android..
how do you pass images (bitmaps) between android activities using bundles? http://stackoverflow.com/questions/4352172/how-do-you-pass-images-bitmaps-between-android-activities-using-bundles recommend a different approach. It's possible if you REALLY want to do it but it costs a lot of memory and is also slow. It might not work if you have an older phone and a big bitmap. You could just pass it as an extra for example intent.putExtra..
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue http://stackoverflow.com/questions/4354939/understanding-the-use-of-colormatrix-and-colormatrixcolorfilter-to-modify-a-draw as I'm not sure how I would go about getting each of these in code and modifying all of them and how slow a process it would be. Hmm okay so I suppose another question I would have is whether a matrix can be used to convert RGB..
Upgraded to SDK 2.3 - now no emulators have connectivity http://stackoverflow.com/questions/4376553/upgraded-to-sdk-2-3-now-no-emulators-have-connectivity 3.6 to use SDK 2.3. I know 3.6 isn't recommended but it used to work OK with SDK 2.1 although code completion was slow . SDK 2.3 emulators are still failing to connect. If you are thinking of investigating this problem please backup your earlier..
Android - What's the best way to share data between activities? http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities Serializable . Although tempting you should think twice before using Serializable it's error prone and horribly slow. So in general stay away from Serializable if possible. If you want to pass complex user defined objects take a look at.. and takes more time to implement. Requires more code and thus more chance of introducing bugs. It will also be much slower. Some of the ways to persist objects include Save them to the shared preferences Save them to a sqlite database Save them..
Can the Android emulator record and play back audio using pc hardware? http://stackoverflow.com/questions/5254994/can-the-android-emulator-record-and-play-back-audio-using-pc-hardware standard 2.3.3 emulator on Windows 7 I have tried it and it works. However the recorded audio did sound a bit weird slow in my case. I did not investigate the cause. You need to add audio recording playback support to the emulator Android SDK..
Benefit of using Parcelable instead of serializing object http://stackoverflow.com/questions/5550670/benefit-of-using-parcelable-instead-of-serializing-object mechanism It turns out that the Android team came to the conclusion that the serialization in Java is far too slow to satisfy Android ™s interprocess communication requirements. So the team built the Parcelable solution. The Parcelable..
Where to stop/destroy threads in Android Service class? http://stackoverflow.com/questions/680180/where-to-stop-destroy-threads-in-android-service-class false announceNetworkAvailability connectionAvailable ... After I close the application the phone works really slow and I guess it is due to thread termination failure. Does anyone know what is the best way to terminate all threads before..
AsyncTask.executeOnExecutor() before API Level 11 http://stackoverflow.com/questions/7211684/asynctask-executeonexecutor-before-api-level-11
Complete Working Sample of the Gmail Three-Fragment Animation Scenario? http://stackoverflow.com/questions/12253965/complete-working-sample-of-the-gmail-three-fragment-animation-scenario non hardware accelerated devices a bitmap caching implementation should fit better Demo video with the animation Here Slow frame rate cause of the screen cast. Actual performance is very fast Usage layout new ThreeLayout this 3 layout.setAnimationDuration..
Punch a hole in a rectangle overlay with HW acceleration enabled on View http://stackoverflow.com/questions/13528550/punch-a-hole-in-a-rectangle-overlay-with-hw-acceleration-enabled-on-view that work but only works when disabled hardware acceleration and the other is too slow. Method 1 SW Acceleration Slow final int saveCount canvas.save Clip out a circle. circle.reset circle.addCircle cx cy radius Path.Direction.CW circle.close.. is not supported in this mode I know i can force SW rendering but I'd like to avoid that . Method 2 HW Acceleration V. Slow Create a new canvas. final Bitmap b Bitmap.createBitmap getWidth getHeight Bitmap.Config.ARGB_8888 final Canvas c new Canvas..
http://stackoverflow.com/questions/1554099/slow-android-emulator Android emulator I have a 2.67 GHz Celeron processor 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding..
Lazy Load images on Listview in android(Beginner Level)? [duplicate] http://stackoverflow.com/questions/2912054/lazy-load-images-on-listview-in-androidbeginner-level Please help me with your ideas. Sample codes are more understandable. Thanks. EDIT The combination of Efficient and Slow Adapter in ApiDemos is more helpful to understand. changes done on efficient adapter example like this public class List14..
Problem with large number of markers on the map http://stackoverflow.com/questions/4710098/problem-with-large-number-of-markers-on-the-map all these markers. It takes roughly about 1 2 seconds to show all of them and zooming and panning is not that bad. Slow down is noticeable but still acceptable. I personally think it is no good to draw all those markers but app is designed..
SQLite or SharedPreferences for persistent data storage? http://stackoverflow.com/questions/4909701/sqlite-or-sharedpreferences-for-persistent-data-storage SharedPreferences Pro Lightweight Quick and easy to use Easy to debug Config file can be edited by hand if need be Con Slow when dealing with lots of data Not helpful when the data is more than a simple key value affair Entire file needs to be..
Issues with SHA1 hash implementation in Android http://stackoverflow.com/questions/6350657/issues-with-sha1-hash-implementation-in-android digestOutputStream.getMessageDigest .digest .length digestOutputStream.close byteArrayOutputStream.close dis.close Slow version MessageDigest algorithm MessageDigest.getInstance SHA1 FileInputStream fis new FileInputStream path to file.exe..
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