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2014/10/16 ¤W¤È 08:20:43
android Programming Glossary: oftenhttp://stackoverflow.com/questions/17839419/android-thread-for-a-timer on SO statements like it doesn't work. are very vague and often unhelpful. Please indicate the expected results compared to..
Android: Storing username and password? http://stackoverflow.com/questions/1925486/android-storing-username-and-password for the user to have to re enter their name password often so storing that info makes sense from a usability perspective...
How to check visibility of software keyboard in Android? http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android when the keyboard appears and disappears which is quite often then what I do is customize my top level layout class into one..
How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE) http://stackoverflow.com/questions/2239330/how-to-increase-storage-for-android-emulator-install-failed-insufficient-stora I get this sometimes not often for one of my projects couple of classes only Installation error..
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 point take any memory info you get with a grain of salt often a very large grain. Finally there is the command adb shell cat.. few people and my questions of those few people about them often resulting in conflicting explanations MemTotal 395144 kB MemFree.. amount of memory available to the kernel and user space often less than the actual physical RAM of the device since some of..
AsyncTask threads never die (Android) http://stackoverflow.com/questions/3077461/asynctask-threads-never-die-android that every time a new AsyncTask was created which is quite often because they can only be used once a new thread was being created..
http://stackoverflow.com/questions/3117429/garbage-collector-in-android System.gc first it was OK. When creating bitmaps Android often fails with out of memory errors and does not try to garbage..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android it an anti pattern it's a bad object oriented style often embraced by people coming from procedural languages like C where..
What exactly is a Context in Java? [duplicate] http://stackoverflow.com/questions/3918083/what-exactly-is-a-context-in-java Android's Context JNDI's InitialContext etc. They all often follow the Facade Pattern which abstracts the environmental..
How exactly does the android:onClick XML attribute differ from setOnClickListener? http://stackoverflow.com/questions/4153517/how-exactly-does-the-androidonclick-xml-attribute-differ-from-setonclicklistene that implement the OnClickListener interface. The latter often requires an anonymous class which personally I don't like personal..
Android error: Failed to install *.apk on device *: timeout http://stackoverflow.com/questions/4775603/android-error-failed-to-install-apk-on-device-timeout app is live on Market but this problem happens every so often and is VERY FRUSTRATING... Any help would be greatly appreciated..
How do I display the current value of an Android Preference in the Preference summary? http://stackoverflow.com/questions/531427/how-do-i-display-the-current-value-of-an-android-preference-in-the-preference-su in the Preference summary This must come up very often. When the user is editing preferences in an Android app I'd..
Spinner onItemSelected() executes when it is not suppose to [duplicate] http://stackoverflow.com/questions/5624825/spinner-onitemselected-executes-when-it-is-not-suppose-to in the view. mGalleryCount in onItemSelected count how often it has triggered. mGalleryInitializedCount when mGalleryInitializedCount..
Good way of getting the user's location in Android http://stackoverflow.com/questions/6181704/good-way-of-getting-the-users-location-in-android here Things to consider do not request GPS updates too often it drains battery power. I currently use 30 min as default for..
install / uninstall APKs programmatically (PackageManager vs Intents) http://stackoverflow.com/questions/6813322/install-uninstall-apks-programmatically-packagemanager-vs-intents access to. Also the installPackage function arguments have often changed between platform releases so anything you do trying..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context recommend you to use this.getApplicationContext as often as possible in order to not leak out any memory. This is because..
NoClassDefFoundError for code in an Java library on Android http://stackoverflow.com/questions/8678630/noclassdeffounderror-for-code-in-an-java-library-on-android Java library on Android I am experiencing an error quite often among my users. The app crashes during startup. When the MainActivity..
R cannot be resolved - Android error http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error While going through the Android sample tutorials I would often use the Ctrl Shift O command to Organize Imports and generate..
http://stackoverflow.com/questions/17839419/android-thread-for-a-timer is nice for things like this. Also when posting a question on SO statements like it doesn't work. are very vague and often unhelpful. Please indicate the expected results compared to actual results of your code and logcat if the app is crashing...
Android: Storing username and password? http://stackoverflow.com/questions/1925486/android-storing-username-and-password or dialog box to ask for credentials. I think it is cumbersome for the user to have to re enter their name password often so storing that info makes sense from a usability perspective. The advice from the Android dev guide is In general we recommend..
How to check visibility of software keyboard in Android? http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android it's far harder than it ought to be. If I need to care about when the keyboard appears and disappears which is quite often then what I do is customize my top level layout class into one which overrides onMeasure . The basic logic is that if the..
How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE) http://stackoverflow.com/questions/2239330/how-to-increase-storage-for-android-emulator-install-failed-insufficient-stora to increase storage for Android Emulator INSTALL_FAILED_INSUFFICIENT_STORAGE I get this sometimes not often for one of my projects couple of classes only Installation error INSTALL_FAILED_INSUFFICIENT_STORAGE How do I increase emulator's..
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 may be the more accurate one... but really this just leave the point take any memory info you get with a grain of salt often a very large grain. Finally there is the command adb shell cat proc meminfo that gives a summary of the overall memory usage.. worth discussing and the remaining ones understood by few people and my questions of those few people about them often resulting in conflicting explanations MemTotal 395144 kB MemFree 184936 kB Buffers 880 kB Cached 84104 kB SwapCached 0 kB.. 880 kB Cached 84104 kB SwapCached 0 kB MemTotal is the total amount of memory available to the kernel and user space often less than the actual physical RAM of the device since some of that RAM is needed for the radio DMA buffers etc . MemFree..
AsyncTask threads never die (Android) http://stackoverflow.com/questions/3077461/asynctask-threads-never-die-android out what was going on in the Eclipse debugger I found out that every time a new AsyncTask was created which is quite often because they can only be used once a new thread was being created but never terminated. The result is a large number of..
http://stackoverflow.com/questions/3117429/garbage-collector-in-android was always getting VM out of memory error . But when I called System.gc first it was OK. When creating bitmaps Android often fails with out of memory errors and does not try to garbage collect first . Hence call System.gc and you have enough memory..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android not properly synchronized in concurrent applications. I consider it an anti pattern it's a bad object oriented style often embraced by people coming from procedural languages like C where it is common to maintain global state. To come back to..
What exactly is a Context in Java? [duplicate] http://stackoverflow.com/questions/3918083/what-exactly-is-a-context-in-java ServletContext JSF's FacesContext Spring's ApplicationContext Android's Context JNDI's InitialContext etc. They all often follow the Facade Pattern which abstracts the environmental details the enduser doesn't need to know about away in a single..
How exactly does the android:onClick XML attribute differ from setOnClickListener? http://stackoverflow.com/questions/4153517/how-exactly-does-the-androidonclick-xml-attribute-differ-from-setonclicklistene using the setOnClickListener method where you pass an object that implement the OnClickListener interface. The latter often requires an anonymous class which personally I don't like personal taste or defining an internal class that implements the..
Android error: Failed to install *.apk on device *: timeout http://stackoverflow.com/questions/4775603/android-error-failed-to-install-apk-on-device-timeout app has been debugged in the past on that device many times app is live on Market but this problem happens every so often and is VERY FRUSTRATING... Any help would be greatly appreciated Thanks. android timeout install apk share improve this..
How do I display the current value of an Android Preference in the Preference summary? http://stackoverflow.com/questions/531427/how-do-i-display-the-current-value-of-an-android-preference-in-the-preference-su do I display the current value of an Android Preference in the Preference summary This must come up very often. When the user is editing preferences in an Android app I'd like them to be able to see the currently set value of the preference..
Spinner onItemSelected() executes when it is not suppose to [duplicate] http://stackoverflow.com/questions/5624825/spinner-onitemselected-executes-when-it-is-not-suppose-to in onCreate count how many Gallery or Spinner widgets you have in the view. mGalleryCount in onItemSelected count how often it has triggered. mGalleryInitializedCount when mGalleryInitializedCount mGalleryCount false then execute the code meant..
Good way of getting the user's location in Android http://stackoverflow.com/questions/6181704/good-way-of-getting-the-users-location-in-android not never than last return upload store your location here Things to consider do not request GPS updates too often it drains battery power. I currently use 30 min as default for my application. add a 'minimum distance to last known location'..
install / uninstall APKs programmatically (PackageManager vs Intents) http://stackoverflow.com/questions/6813322/install-uninstall-apks-programmatically-packagemanager-vs-intents the user so it is not safe for regular applications to have access to. Also the installPackage function arguments have often changed between platform releases so anything you do trying access it will fail on various other versions of the platform...
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context Each is an instance of its class which means that some programmers recommend you to use this.getApplicationContext as often as possible in order to not leak out any memory. This is because the other this getting the Activity instance context points..
NoClassDefFoundError for code in an Java library on Android http://stackoverflow.com/questions/8678630/noclassdeffounderror-for-code-in-an-java-library-on-android for code in an Java library on Android I am experiencing an error quite often among my users. The app crashes during startup. When the MainActivity is supposed to be loaded the VM apparently cannot..
R cannot be resolved - Android error http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error out for these erroneous import statements and delete them. While going through the Android sample tutorials I would often use the Ctrl Shift O command to Organize Imports and generate any missing import statements. Sometimes this would generate..
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