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2014/10/16 ¤W¤È 08:13:13
android Programming Glossary: everHow ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works view by referring to an image from android.amberfog When ever your listview is filled with an adapter it basically shows the.. you due to performance optimization. Important things 1 .Never set the layout_height and layout_width of your listview to wrap_content..
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 now available and will make this process a lot easier. However there's no sample code available yet he says it's coming soon..... as before... else Give up. Crash or log an error or whatever you want. .start Intent launch Intent result.getResult.. break default This isn't expected... maybe just log whatever code was returned. break else Your application has other intents..
Using the Android RecognizerIntent with a bluetooth headset http://stackoverflow.com/questions/14991158/using-the-android-recognizerintent-with-a-bluetooth-headset intent VOICE_RECOGNITION_REQUEST_CODE This works fine. However it doesn't seem to accept voice input from a bluetooth headset.. new BluetoothProfile.ServiceListener This method is never called even when we closeProfileProxy on onPause. When or will.. even when we closeProfileProxy on onPause. When or will it ever be called @Override public void onServiceDisconnected int profile..
handle textview link click in my android app http://stackoverflow.com/questions/1697084/handle-textview-link-click-in-my-android-app I could simply check data for null values because when ever it isn't null I'll know it was invoked by means of such a link...
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon 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.. but Android can very well totally destroy your app whenever it feels like it . What's up with that I am starting to think.. a lot of issues that exist in Windows Mobile and .NET. However the last week has been somewhat of a turnoff for me... I hope..
Android Intent for Twitter application http://stackoverflow.com/questions/2077008/android-intent-for-twitter-application question It is entirely possible your users will only ever now and forever only want to post to Twitter. I would think.. is entirely possible your users will only ever now and forever only want to post to Twitter. I would think that it is more..
Android - Switch Tabs from within an Activity within a tab http://stackoverflow.com/questions/2541802/android-switch-tabs-from-within-an-activity-within-a-tab that is located inside the tab host. I've looked everywhere and have been unsuccessful in finding a real answer to..
Android - HorizontalScrollView within ScrollView Touch Handling http://stackoverflow.com/questions/2646028/android-horizontalscrollview-within-scrollview-touch-handling to right almost perfectly horizontally for an ACTION_UP to ever register. If I swipe vertically in the very least which I think.. of a ScrollView is to intercept the touch event whenever there is ANY Y motion. So with the fix the ScrollView will only..
How to crop the parsed image in android? http://stackoverflow.com/questions/3725501/how-to-crop-the-parsed-image-in-android to set the BitMap to the ImageView ImageButton or what ever BitmapDrawable bmd new BitmapDrawable resizedBitmap ImageView..
http://stackoverflow.com/questions/4322367/i-lost-my-keystore-file to sign and publish my application to the market with several updates . Am I and my poor users out of luck if I ever want.. several updates . Am I and my poor users out of luck if I ever want to update I know the password used to sign the key at least..
Android: Want to set custom fonts for whole application not runtime http://stackoverflow.com/questions/4395309/android-want-to-set-custom-fonts-for-whole-application-not-runtime not runtime Is it possible to set any custom font in every control of the application And not necessarily runtime i.e... And the problem with this code is it should be called for every control. And i want to call this or any similar method once.. going to want to make a new class that overrides whatever View you want to customize. e.g. want a Button with a custom..
Android VideoView orientation change with buffered video http://stackoverflow.com/questions/4434027/android-videoview-orientation-change-with-buffered-video allow me to resize the video without forcing a rebuffer however the video will randomly scale to different widths heights when.. initialWidth initialHeight One last key part if you ever find yourself wondering why the VideoView isn't resizing on..
Android Can't create handler inside thread that has not called Looper.prepare() http://stackoverflow.com/questions/5009816/android-cant-create-handler-inside-thread-that-has-not-called-looper-prepare don't want to directly instantiate a Handler at all... whatever data your doInBackground implementation returns will be passed.. from a GL rendering thread... don't do that cos they won't ever Looper.loop either. AsyncTasks are really designed to be run..
How I can get onclick event on webview in android? http://stackoverflow.com/questions/5116909/how-i-can-get-onclick-event-on-webview-in-android . It does have its own onTouchEvent method but I only ever seemed to get MotionEvent.ACTION_MOVE using that method. So.. the only problem that remains is how to circumvent whatever action you want to perform for a touch when the user clicks..
How to import contacts from phonebook to our application http://stackoverflow.com/questions/5662473/how-to-import-contacts-from-phonebook-to-our-application application I am developing the android application when ever user clicks on the button it should show all contacts from the..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables problem you are encountering is how to save state across several Activities and all parts of your application. A static variable.. is a common Java way of achieving this. I have found however that a more elegant way in Android is to associate your state.. being killed at any time etc... moot as anything that ever needed to be persisted to disk should not be stored through..
Android app out of memory issues - tried everything and still at a loss http://stackoverflow.com/questions/7536988/android-app-out-of-memory-issues-tried-everything-and-still-at-a-loss app out of memory issues tried everything and still at a loss I spent 4 full days trying everything.. everything and still at a loss I spent 4 full days trying everything I can to figure out the memory leak in an app I'm developing.. Strings etc it doesn't seem to be consistent. After doing everything imaginable to figure out why I am running out of memory..
Android - Start service on boot http://stackoverflow.com/questions/7690350/android-start-service-on-boot Start service on boot From everything I've seen on Stack Exchange and elsewhere I have everything.. I've seen on Stack Exchange and elsewhere I have everything set up correctly to start an IntentService when Android.. handler of the StartupIntentReceiver and nothing is ever logged. So it isn't even making it to the BroadcastReceiver...
Retrieve a Fragment from a ViewPager http://stackoverflow.com/questions/8785221/retrieve-a-fragment-from-a-viewpager relies on a name being generated by the framework. If that ever changes then it will no longer work. What about this solution..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works research I pretty much understand the mechanisms of the list view by referring to an image from android.amberfog When ever your listview is filled with an adapter it basically shows the number of Rows that the listview can show on screen and the.. listview is re using the same view not creating a new for you due to performance optimization. Important things 1 .Never set the layout_height and layout_width of your listview to wrap_content as getView will force your adapter to get some child..
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 Edit Claudio Cherubino says that Google Play Services is now available and will make this process a lot easier. However there's no sample code available yet he says it's coming soon... they said Google Play Services was coming soon 4 months.. USE_CREDENTIALS in the Manifest am.getAuthToken same as before... else Give up. Crash or log an error or whatever you want. .start Intent launch Intent result.getResult .get AccountManager.KEY_INTENT if launch null startActivityForResult.. refused to log in. Explain to them why they need to log in. break default This isn't expected... maybe just log whatever code was returned. break else Your application has other intents that it fires off besides the one for Drive's log in..
Using the Android RecognizerIntent with a bluetooth headset http://stackoverflow.com/questions/14991158/using-the-android-recognizerintent-with-a-bluetooth-headset startActivityForResult intent VOICE_RECOGNITION_REQUEST_CODE This works fine. However it doesn't seem to accept voice input from a bluetooth headset that is paired and connected using the Phone audio profile... BluetoothProfile.ServiceListener mHeadsetProfileListener new BluetoothProfile.ServiceListener This method is never called even when we closeProfileProxy on onPause. When or will it ever be called @Override public void onServiceDisconnected.. This method is never called even when we closeProfileProxy on onPause. When or will it ever be called @Override public void onServiceDisconnected int profile Log.d TAG Profile listener onServiceDisconnected NON..
handle textview link click in my android app http://stackoverflow.com/questions/1697084/handle-textview-link-click-in-my-android-app retrieve this address Uri data getIntent .getData In my example I could simply check data for null values because when ever it isn't null I'll know it was invoked by means of such a link. From there I extract the instructions I need from the url..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon 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 Apparently you cannot quit an application in Android but.. 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 a normal.. to developing for the Android platform since it addresses a lot of issues that exist in Windows Mobile and .NET. However the last week has been somewhat of a turnoff for me... I hope I don't have to abandon Android but it doesn't look very good..
Android Intent for Twitter application http://stackoverflow.com/questions/2077008/android-intent-for-twitter-application you Wouter android twitter android intent share improve this question It is entirely possible your users will only ever now and forever only want to post to Twitter. I would think that it is more likely that your users want to send information.. twitter android intent share improve this question It is entirely possible your users will only ever now and forever only want to post to Twitter. I would think that it is more likely that your users want to send information to people and..
Android - Switch Tabs from within an Activity within a tab http://stackoverflow.com/questions/2541802/android-switch-tabs-from-within-an-activity-within-a-tab is how do I switch between tabs from within one of the activities that is located inside the tab host. I've looked everywhere and have been unsuccessful in finding a real answer to this problem. android tabs android intent share improve..
Android - HorizontalScrollView within ScrollView Touch Handling http://stackoverflow.com/questions/2646028/android-horizontalscrollview-within-scrollview-touch-handling all works great except for one problem I need to swipe left to right almost perfectly horizontally for an ACTION_UP to ever register. If I swipe vertically in the very least which I think many people tend to do on their phones when swiping side.. the Y motion is the X motion. It seems like the default behavior of a ScrollView is to intercept the touch event whenever there is ANY Y motion. So with the fix the ScrollView will only intercept the event if the user is deliberately scrolling..
How to crop the parsed image in android? http://stackoverflow.com/questions/3725501/how-to-crop-the-parsed-image-in-android width height matrix true make a Drawable from Bitmap to allow to set the BitMap to the ImageView ImageButton or what ever BitmapDrawable bmd new BitmapDrawable resizedBitmap ImageView imageView new ImageView this set the Drawable on the ImageView..
http://stackoverflow.com/questions/4322367/i-lost-my-keystore-file to retrieve the source code but not the .keystore file used to sign and publish my application to the market with several updates . Am I and my poor users out of luck if I ever want to update I know the password used to sign the key at least.. used to sign and publish my application to the market with several updates . Am I and my poor users out of luck if I ever want to update I know the password used to sign the key at least it is one of three it could be so can I create another..
Android: Want to set custom fonts for whole application not runtime http://stackoverflow.com/questions/4395309/android-want-to-set-custom-fonts-for-whole-application-not-runtime Want to set custom fonts for whole application not runtime Is it possible to set any custom font in every control of the application And not necessarily runtime i.e. from xml if possible or only once for whole application in.. .getAssets fonts BPreplay.otf textView.setTypeface tf And the problem with this code is it should be called for every control. And i want to call this or any similar method once or if possible set the property in xml. Is it possible android.. the best way to do this and through XML no less So first you're going to want to make a new class that overrides whatever View you want to customize. e.g. want a Button with a custom typeface Extend Button . Let's make an example public class..
Android VideoView orientation change with buffered video http://stackoverflow.com/questions/4434027/android-videoview-orientation-change-with-buffered-video onConfigurationChange and setting new LayoutParameters will allow me to resize the video without forcing a rebuffer however the video will randomly scale to different widths heights when rotating the screen multiple times. I've tried doing all.. on a surface of any size. onCreate questionVideo.setDimensions initialWidth initialHeight One last key part if you ever find yourself wondering why the VideoView isn't resizing on rotation you need to ensure the dimensions you're resizing to..
Android Can't create handler inside thread that has not called Looper.prepare() http://stackoverflow.com/questions/5009816/android-cant-create-handler-inside-thread-that-has-not-called-looper-prepare to loop is not connected to a Looper . You most likely don't want to directly instantiate a Handler at all... whatever data your doInBackground implementation returns will be passed to onPostExecute which runs on the UI thread. ADDED FOLLOWING.. IN QUESTION Looks like you're trying to start an AsyncTask from a GL rendering thread... don't do that cos they won't ever Looper.loop either. AsyncTasks are really designed to be run from the UI thread only. The least disruptive fix would probably..
How I can get onclick event on webview in android? http://stackoverflow.com/questions/5116909/how-i-can-get-onclick-event-on-webview-in-android is that a WebView will send touch events to an OnTouchListener . It does have its own onTouchEvent method but I only ever seemed to get MotionEvent.ACTION_MOVE using that method. So given that we can get events on a registered touch event listener.. that we can get events on a registered touch event listener the only problem that remains is how to circumvent whatever action you want to perform for a touch when the user clicks a URL. This can be achieved with some fancy Handler footwork..
How to import contacts from phonebook to our application http://stackoverflow.com/questions/5662473/how-to-import-contacts-from-phonebook-to-our-application to import contacts from phonebook to our application I am developing the android application when ever user clicks on the button it should show all contacts from the phone book with in a table.How can i achieve it any one can..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables Read it at your own risk. ORIGINAL ANSWER The more general problem you are encountering is how to save state across several Activities and all parts of your application. A static variable for instance a singleton is a common Java way of achieving.. your application. A static variable for instance a singleton is a common Java way of achieving this. I have found however that a more elegant way in Android is to associate your state with the Application context. As you know each Activity is.. Thus I consider most criticism below related to Applications being killed at any time etc... moot as anything that ever needed to be persisted to disk should not be stored through an Application subclass. It is meant to be a solution for storing..
Android app out of memory issues - tried everything and still at a loss http://stackoverflow.com/questions/7536988/android-app-out-of-memory-issues-tried-everything-and-still-at-a-loss app out of memory issues tried everything and still at a loss I spent 4 full days trying everything I can to figure out the memory leak in an app I'm developing.. app out of memory issues tried everything and still at a loss I spent 4 full days trying everything I can to figure out the memory leak in an app I'm developing but things stopped making sense a long time ago. The.. I get an out of memory exception in random places Bitmaps Strings etc it doesn't seem to be consistent. After doing everything imaginable to figure out why I am running out of memory I have come up with nothing. What I don't understand is why..
Android - Start service on boot http://stackoverflow.com/questions/7690350/android-start-service-on-boot Start service on boot From everything I've seen on Stack Exchange and elsewhere I have everything set up correctly to start an IntentService when Android.. Start service on boot From everything I've seen on Stack Exchange and elsewhere I have everything set up correctly to start an IntentService when Android OS boots. Unfortunately it is not starting on boot and I'm.. Got to onReceive about to start service to the onReceive handler of the StartupIntentReceiver and nothing is ever logged. So it isn't even making it to the BroadcastReceiver. I think I'm deploying the APK and testing correctly just running..
Retrieve a Fragment from a ViewPager http://stackoverflow.com/questions/8785221/retrieve-a-fragment-from-a-viewpager viewpager share improve this question The main answer relies on a name being generated by the framework. If that ever changes then it will no longer work. What about this solution overriding instantiateItem and destroyItem of your Fragment..
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