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2014/10/16 ¤W¤È 08:11:05
android Programming Glossary: causeCan The Android drawable directory contain subdirectories? http://stackoverflow.com/questions/1077357/can-the-android-drawable-directory-contain-subdirectories with any items in it within the res drawable folder will cause the resource compiler to fail preventing the R.java file from..
Android Activity ClassNotFoundException - tried everything http://stackoverflow.com/questions/10866431/android-activity-classnotfoundexception-tried-everything trying to run my main project so I think this could be the cause Just like what I thought it is all about how you reference your..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works I asked for help on here . Luksprog's answer was great because I had no idea about how ListView and GridView optimized itself.. initially convertview is null for all the visible rows because initially there were no view item in recycler so your getView.. Logcat you will notice that convetView is not null its because your new item 8 will be drawn using convertview i.e basically..
Android Speech Recognition as a service on Android 4.1 & 4.2 http://stackoverflow.com/questions/14940657/android-speech-recognition-as-a-service-on-android-4-1-4-2 will happen every few seconds that this workaround will cause but getting continuous voice recognition is more important for..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application way to remove the app from the device but it could cause problems since resources will not be finalized first. For example..
http://stackoverflow.com/questions/2176375/android-service-wont-stop So for example if you are relying upon onDestroy to cause your service to stop some work that is being done consider using..
Ideal way to set global uncaught exception Handler in Android http://stackoverflow.com/questions/2764394/ideal-way-to-set-global-uncaught-exception-handler-in-android That should be all you need to do. Make sure you cause the process to halt afterward things could be in an uncertain.. and then throw an uncaught exception to cause a crash. Keep an eye on the logcat output to see what's going..
How to draw an overlay on a SurfaceView used by Camera on Android? http://stackoverflow.com/questions/2933882/how-to-draw-an-overlay-on-a-surfaceview-used-by-camera-on-android but have it appear after the SurfaceView This will cause your custom View class to appear to float above the SurfaceView..
Android/Java — Post simple text to Facebook wall? http://stackoverflow.com/questions/2953146/android-java-post-simple-text-to-facebook-wall Eclipse. Export the project as a .jar file. this might cause a conflict UPDATE Facebook recently updated the source code.. updated the source code and I noticed the icon file caused resource id conflicts with my projects Android 1.5 . My solution..
Make a link in the Android browser start up my app? http://stackoverflow.com/questions/3469908/make-a-link-in-the-android-browser-start-up-my-app such as a href anton useful_info_for_anton_app click me a cause my Anton app to start up I know that this works for the Android..
http://stackoverflow.com/questions/4116001/android-lock-screen-widget FLAG_DISMISS_KEYGUARD Window flag when set the window will cause the keyguard to be dismissed only if it is not a secure lock.. be dismissed only if it is not a secure lock keyguard. Because such a keyguard is not needed for security it will never re..
'Application not Installed' Error on Android http://stackoverflow.com/questions/4226132/application-not-installed-error-on-android phone I am not sure when this happened. What is the likely cause of it not installing on a physical phone but running fine in.. improve this question I had a similar issue and it was because I was trying to install an apk on a phone with a previous version..
Activity restart on rotation Android http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android you can have your application listen for events that would cause a restart like orientation and keyboard visibility changes and..
How to ship an Android application with a database? http://stackoverflow.com/questions/513084/how-to-ship-an-android-application-with-a-database drawbacks I see 1 Possible sqlite version mismatches might cause problems and I currently don't know where the database should..
Android create shortcuts on the home screen http://stackoverflow.com/questions/6337431/android-create-shortcuts-on-the-home-screen use the default browser but i don't want to use internet cause i already have the page. 2 The second button create another..
ViewPager and fragments ??what's the right way to store fragment's state? http://stackoverflow.com/questions/7951730/viewpager-and-fragments-whats-the-right-way-to-store-fragments-state and there is no need to add it again. Doing so is a common cause of errors when working with fragments. A usual approach when.. is controlled by ViewPager.setOffscreenPageLimit int . Because of this directly calling methods on the fragments outside of.. outside of the adapter is not guaranteed to be valid because they may not even be alive. To cut a long story short your solution..
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 your activity is destroyed. This can happen either because the activity is finishing someone called finish on it or because.. the activity is finishing someone called finish on it or because the system is temporarily destroying this instance of the activity.. more memory than is available on the device as this could cause the UI to become unresponsive. Paused When the device goes to..
How to call Android contacts list? http://stackoverflow.com/questions/866769/how-to-call-android-contacts-list code integer PICK_CONTACT in this example . This will cause Android to launch an Activity that's registered to support ACTION_PICK..
R cannot be resolved - Android error http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error ask Eclipse to sort or otherwise manage imports. This will cause your make to break. Look out for these erroneous import statements..
Using Activities from Library projects http://stackoverflow.com/questions/10398416/using-activities-from-library-projects android library project share improve this question Cause Issue 9656 Library projects don't support custom XML attributes..
Android Understanding Heap Sizes http://stackoverflow.com/questions/10677850/android-understanding-heap-sizes After using the app for a while in the emulator I click Cause GC on my DDMS screen and the results are ID 1 Heap Size 6.133..
Calling android dialog without it fading the background http://stackoverflow.com/questions/3113812/calling-android-dialog-without-it-fading-the-background but for the background to not fade out. Is this possible Cause the view that calls this dialog has a neato background I would..
Download a file from webview to a custom folder http://stackoverflow.com/questions/4860484/download-a-file-from-webview-to-a-custom-folder you mean you need to handle the download with the browser Cause you can use the webview and still handle the download yourself...
http://stackoverflow.com/questions/5038158/main-activity-is-not-garbage-collected-after-destruction-because-it-is-reference and launch HelloWorld app. close it by clicking back key. Cause gc in DDMS and dump heap Here I found HelloWorldActivity instance...
Execute AsyncTask several times http://stackoverflow.com/questions/6373826/execute-asynctask-several-times again the AsyncTask In case the network job didnt work . Cause then appears an Exception which says Cannot execute task the..
A few questions about SQLite database cursors in Android http://stackoverflow.com/questions/7603647/a-few-questions-about-sqlite-database-cursors-in-android to happen should I deactivate the cursor in the meantime Cause it will be active again when I call .requery again. Or the SimpleCursorAdapter..
Can The Android drawable directory contain subdirectories? http://stackoverflow.com/questions/1077357/can-the-android-drawable-directory-contain-subdirectories
Android Activity ClassNotFoundException - tried everything http://stackoverflow.com/questions/10866431/android-activity-classnotfoundexception-tried-everything problem and get exactly the same exception stack trace when trying to run my main project so I think this could be the cause Just like what I thought it is all about how you reference your Android library project in the Android main project a simple..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works works So I have this problem I had before and naturally I asked for help on here . Luksprog's answer was great because I had no idea about how ListView and GridView optimized itself with recycling Views. So with his advice I was able to change.. position return row you will notice in your logcat initially convertview is null for all the visible rows because initially there were no view item in recycler so your getView creates each new view for the visible items but the moment.. view convert view which is already in your recycler in your Logcat you will notice that convetView is not null its because your new item 8 will be drawn using convertview i.e basically it take the item1 view from the recycler and inflater in place..
Android Speech Recognition as a service on Android 4.1 & 4.2 http://stackoverflow.com/questions/14940657/android-speech-recognition-as-a-service-on-android-4-1-4-2 required for this solution. I am aware of the 'beep' that will happen every few seconds that this workaround will cause but getting continuous voice recognition is more important for me. If anyone has any other alternative workarounds then..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application virtual machine could be abruptly killed. This is the quickest way to remove the app from the device but it could cause problems since resources will not be finalized first. For example all threads running under the process will be abruptly..
http://stackoverflow.com/questions/2176375/android-service-wont-stop service being destroyed is up to Android and may not be immediate. So for example if you are relying upon onDestroy to cause your service to stop some work that is being done consider using another trigger for that e.g. activity calling a stopDoingStuff..
Ideal way to set global uncaught exception Handler in Android http://stackoverflow.com/questions/2764394/ideal-way-to-set-global-uncaught-exception-handler-in-android exception handling uncaught exception share improve this question That should be all you need to do. Make sure you cause the process to halt afterward things could be in an uncertain state. The first thing to check is whether the Android handler..
How to draw an overlay on a SurfaceView used by Camera on Android? http://stackoverflow.com/questions/2933882/how-to-draw-an-overlay-on-a-surfaceview-used-by-camera-on-android the layout XML file as a child of the FrameLayout or RelativeLayout but have it appear after the SurfaceView This will cause your custom View class to appear to float above the SurfaceView . See here for a sample project that layers popup panels..
Android/Java — Post simple text to Facebook wall? http://stackoverflow.com/questions/2953146/android-java-post-simple-text-to-facebook-wall facebook facebook android sdk Import the project files into Eclipse. Export the project as a .jar file. this might cause a conflict UPDATE Facebook recently updated the source code and I noticed the icon file caused resource id conflicts with.. a .jar file. this might cause a conflict UPDATE Facebook recently updated the source code and I noticed the icon file caused resource id conflicts with my projects Android 1.5 . My solution is to forget about exporting as a jar. Instead copy the..
Make a link in the Android browser start up my app? http://stackoverflow.com/questions/3469908/make-a-link-in-the-android-browser-start-up-my-app browser start up my app Is it possible to make a link such as a href anton useful_info_for_anton_app click me a cause my Anton app to start up I know that this works for the Android Market app with the market protocol but can something similar..
http://stackoverflow.com/questions/4116001/android-lock-screen-widget flag to let windows be shown when the screen is locked. FLAG_DISMISS_KEYGUARD Window flag when set the window will cause the keyguard to be dismissed only if it is not a secure lock keyguard. Because such a keyguard is not needed for security.. Window flag when set the window will cause the keyguard to be dismissed only if it is not a secure lock keyguard. Because such a keyguard is not needed for security it will never re appear if the user navigates to another window in contrast to..
'Application not Installed' Error on Android http://stackoverflow.com/questions/4226132/application-not-installed-error-on-android emulators and only every now and again exporting to a real phone I am not sure when this happened. What is the likely cause of it not installing on a physical phone but running fine in the emulators I have tried rebooting the phone removing the.. not fix fault Many thanks android android emulator share improve this question I had a similar issue and it was because I was trying to install an apk on a phone with a previous version of the same apk and both apk hadn't been signed with the..
Activity restart on rotation Android http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android Reacting to Configuration Changes As a further alternative you can have your application listen for events that would cause a restart like orientation and keyboard visibility changes and handle them within your Activity. Start by adding the android..
How to ship an Android application with a database? http://stackoverflow.com/questions/513084/how-to-ship-an-android-application-with-a-database it create the database and insert the data on first use The drawbacks I see 1 Possible sqlite version mismatches might cause problems and I currently don't know where the database should go and how to access it. 2 It may take a really long time..
Android create shortcuts on the home screen http://stackoverflow.com/questions/6337431/android-create-shortcuts-on-the-home-screen html page that has been previously downloaded so i want it to use the default browser but i don't want to use internet cause i already have the page. 2 The second button create another shortcut thta starts an activity. And i want to pass to the..
ViewPager and fragments ??what's the right way to store fragment's state? http://stackoverflow.com/questions/7951730/viewpager-and-fragments-whats-the-right-way-to-store-fragments-state FragmentManager it will be recreated for you after rotating and there is no need to add it again. Doing so is a common cause of errors when working with fragments. A usual approach when working with fragments is this protected void onCreate Bundle.. them unless you are using FragmentStatePagerAdapter . This is controlled by ViewPager.setOffscreenPageLimit int . Because of this directly calling methods on the fragments outside of the adapter is not guaranteed to be valid because they may.. int . Because of this directly calling methods on the fragments outside of the adapter is not guaranteed to be valid because they may not even be alive. To cut a long story short your solution to use putFragment to be able to get a reference afterwards..
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 method is called. onDestroy The final call you receive before your activity is destroyed. This can happen either because the activity is finishing someone called finish on it or because the system is temporarily destroying this instance of the.. your activity is destroyed. This can happen either because the activity is finishing someone called finish on it or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these two.. in extreme situations such as if the activity tries to use more memory than is available on the device as this could cause the UI to become unresponsive. Paused When the device goes to sleep or an activity is still visible but partially hidden..
How to call Android contacts list? http://stackoverflow.com/questions/866769/how-to-call-android-contacts-list Call startActivityForResult passing in this Intent and a request code integer PICK_CONTACT in this example . This will cause Android to launch an Activity that's registered to support ACTION_PICK on the People.CONTENT_URI then return to this Activity..
R cannot be resolved - Android error http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error 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 statements and delete them. While going through the Android sample..
Using Activities from Library projects http://stackoverflow.com/questions/10398416/using-activities-from-library-projects switching around library not a library to test components. android library project share improve this question Cause Issue 9656 Library projects don't support custom XML attributes for custom classes Solution Upgrade to latest SDK ADT version..
Android Understanding Heap Sizes http://stackoverflow.com/questions/10677850/android-understanding-heap-sizes on each onDestroy and hinting at the GC to run here also. After using the app for a while in the emulator I click Cause GC on my DDMS screen and the results are ID 1 Heap Size 6.133 MB Allocated 2.895MB Free 3.238 MB Used 47.20 # Objects 52..
Calling android dialog without it fading the background http://stackoverflow.com/questions/3113812/calling-android-dialog-without-it-fading-the-background Button LinearLayout LinearLayout I want my dialog to show up but for the background to not fade out. Is this possible Cause the view that calls this dialog has a neato background I would like to be shown as a backdrop to the dialog. I found this..
Download a file from webview to a custom folder http://stackoverflow.com/questions/4860484/download-a-file-from-webview-to-a-custom-folder this question When you mean you need the browser... do you mean you need to handle the download with the browser Cause you can use the webview and still handle the download yourself. As @Harry Joy commented I would use the shouldOverrideUrlLoading..
http://stackoverflow.com/questions/5038158/main-activity-is-not-garbage-collected-after-destruction-because-it-is-reference with HelloWorldActivity it has no child views run Emulator and launch HelloWorld app. close it by clicking back key. Cause gc in DDMS and dump heap Here I found HelloWorldActivity instance. 'Path to GC Roots' from it shows the following path...
Execute AsyncTask several times http://stackoverflow.com/questions/6373826/execute-asynctask-several-times But the app crash when I press an update button which calls again the AsyncTask In case the network job didnt work . Cause then appears an Exception which says Cannot execute task the task has already been executed a task can be executed only..
A few questions about SQLite database cursors in Android http://stackoverflow.com/questions/7603647/a-few-questions-about-sqlite-database-cursors-in-android record is deleted which is a user action and may take a while to happen should I deactivate the cursor in the meantime Cause it will be active again when I call .requery again. Or the SimpleCursorAdapter is going to stop working because the cursor..
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