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2014/10/16 ¤W¤Č 08:26:22
android Programming Glossary: theyLibraries do not get added to APK anymore after upgrade to ADT 22 http://stackoverflow.com/questions/16596969/libraries-do-not-get-added-to-apk-anymore-after-upgrade-to-adt-22 to just close and re open any depending project because they may not see this 'fix' immediately. Give this a shot and with..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android http://stackoverflow.com/questions/1949066/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget-android handle many images Should I put them in static methods so they are not loaded all the time Do I have to clean the layout or..
Difference between px, dp, dip and sp in Android? http://stackoverflow.com/questions/2025282/difference-between-px-dp-dip-and-sp-in-android recommend you use this unit when specifying font sizes so they will be adjusted for both the screen density and user's preference...
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon think about terminating the Android app any more than they think about terminating a Web page or terminating a thermostat... Our users log in and cant be doing that everytime they get a phonecall and Android decides to kill the app. There are.. applications that deal with this. Usually it is because they hold onto logon credentials rather than forcing users to log..
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 engineers there is always a long discussion about what they actually mean that only results in a vague conclusion. Note.. add up the pss across all processes to see the total RAM they are using and compare pss between processes to get a rough idea.. kernel mechanism to collect its data than meminfo does and they give slightly different results. Why is that Honestly I haven't..
How to pick an image from gallery (SD Card) for my app in Android? http://stackoverflow.com/questions/2507898/how-to-pick-an-image-from-gallery-sd-card-for-my-app-in-android The other answers explained how to send the intent but they didn't explain well how to handle the response. Here's some..
Launch custom android application from android browser http://stackoverflow.com/questions/2958701/launch-custom-android-application-from-android-browser when the user clicks on a link to twitter in the browser they will be asked what application to use in order to complete the.. to this is that if the user doesn't have the app installed they'll get a nasty error. And I'm not sure there's any way to check...
How to draw a path on a map using kml file? http://stackoverflow.com/questions/3109158/how-to-draw-a-path-on-a-map-using-kml-file default set to 0. If you want to create tessellated lines they must be authored or edited directly in KML. description Style..
Auto Scale TextView Text to Fit within Bounds http://stackoverflow.com/questions/5033012/auto-scale-textview-text-to-fit-within-bounds cases on StackOverflow where auto resizing was needed but they are either very special cases with hack solutions have no solution.. and getWidth bounds Thanks to everyone who shared what they had I recommend Chase's solution for most cases and I've listed..
How do I do a lazy load of images in ListView http://stackoverflow.com/questions/541966/how-do-i-do-a-lazy-load-of-images-in-listview the UI is not locked up and images are displayed as they are downloaded The number of images is not fixed. android image..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables cannot in good faith recommend ignoring their advice. What they say goes to a certain extent. I do wish to disagree extremely.. argue that Singletons cannot work well but I do argue that they are generally the product of either a bad API or a lazy programmer...
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context than using MyActivity.this to get at the outer class' this they use getApplicationContext or getBaseContext to get a Context.. subclasses of Application for their own global data which they retrieve via getApplicationContext . That's certainly possible...
How did Google manage to do this? Slide ActionBar in Android application http://stackoverflow.com/questions/11234375/how-did-google-manage-to-do-this-slide-actionbar-in-android-application of my own does anyone know how Google managed to do this They seem to have pulled the current window aside and put in a fly..
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen discourages GIF. However PNG and JPEG are not equivalents. They have different quality trade offs and PNG is not always best..
Eclipse error: R cannot be resolved to a variable [duplicate] http://stackoverflow.com/questions/16642604/eclipse-error-r-cannot-be-resolved-to-a-variable error in Eclipse IDE. I am bored of Eclipse's bugs. They driving me mad. I almost tried everything which suggested as..
Inner class can access but not update values - AsyncTask http://stackoverflow.com/questions/18517400/inner-class-can-access-but-not-update-values-asynctask question How can I ensure that the values remain updated They will be updated since they are member variables. However since.. lost once that thread returns No they shouldn't be lost . They probably just haven't been changed in the AsyncTask when you..
How do I get the SharedPreferences from a PreferenceActivity in Android? http://stackoverflow.com/questions/2614719/how-do-i-get-the-sharedpreferences-from-a-preferenceactivity-in-android set of APIs. Preferences are typically name value pairs. They can be stored as Shared Preferences across various activities..
How to Read MMS Data in Android? http://stackoverflow.com/questions/3012287/how-to-read-mms-data-in-android get data from a MMS data MMSs are a little bit different. They can be built with different parts text audio images etc. so..
Developing cross platform mobile application [closed] http://stackoverflow.com/questions/3369413/developing-cross-platform-mobile-application plaform tools are the benefits they bring to developers . They are sold on the idea that they allow the developers to write.. that they allow the developers to write once run anywhere. They are sold on the idea that they allow the developers to expand.. to expand their market without learning new APIs. They are sold on the idea that they allow the developers to slash..
What is the Android UiThread (UI thread) http://stackoverflow.com/questions/3652560/what-is-the-android-uithread-ui-thread the ability to execute code that can modify the UI. They do this by putting the UI modifying code in a Runnable object..
No generated R.java file in my project http://stackoverflow.com/questions/4085959/no-generated-r-java-file-in-my-project import android.widget.SimpleCursorAdapter They are created by the Eclipse command Ctrl Shift O . android eclipse..
Difference between Activity Context and Application Context http://stackoverflow.com/questions/4128589/difference-between-activity-context-and-application-context 'Context' android context share improve this question They are both instances of Context but the application instance is..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare thing is how can I compare the two arrays in a smart way They will never have exactly the same values but they can be somewhat..
install / uninstall APKs programmatically (PackageManager vs Intents) http://stackoverflow.com/questions/6813322/install-uninstall-apks-programmatically-packagemanager-vs-intents the way e.g. Android Market installs uninstalls packages. They use a richer version of the PackageManager. This can bee seen..
Handler vs AsyncTask vs Thread http://stackoverflow.com/questions/6964011/handler-vs-asynctask-vs-thread does it mean It means no magic in AsyncTask or Handler . They just make your job easier as a developer. For example If Program.. That is why you should use Handler and AsyncTask . They do most of the work for you you just need to know what methods.. Runnable objects associated with a thread's MessageQueue They may seem strange at first.Just understand that each thread has..
Java 7 language features with Android http://stackoverflow.com/questions/7153989/java-7-language-features-with-android though . We could confirm its existence via reflection. They are hidden simply because the Javadoc has the @hide tag which..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context a lesser extent because their Java experience is limited. They implement an inner class e.g. an OnClickListener for a Button..
Libraries do not get added to APK anymore after upgrade to ADT 22 http://stackoverflow.com/questions/16596969/libraries-do-not-get-added-to-apk-anymore-after-upgrade-to-adt-22 After you done this 'fix' for a library project you may need to just close and re open any depending project because they may not see this 'fix' immediately. Give this a shot and with luck it will solve your problem. share improve this answer..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android http://stackoverflow.com/questions/1949066/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget-android . So what is the best correct way to handle many images Should I put them in static methods so they are not loaded all the time Do I have to clean the layout or the images used in the layout in a special way android memory..
Difference between px, dp, dip and sp in Android? http://stackoverflow.com/questions/2025282/difference-between-px-dp-dip-and-sp-in-android
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon closes up the application as needed. Those users simply don't think about terminating the Android app any more than they think about terminating a Web page or terminating a thermostat. iPhone users are much the same way in that pressing the.. task via AlarmManager to update your data for maximum reliability. Our users log in and cant be doing that everytime they get a phonecall and Android decides to kill the app. There are many iPhone and Android applications that deal with this... decides to kill the app. There are many iPhone and Android applications that deal with this. Usually it is because they hold onto logon credentials rather than forcing users to log in every time manually. For example we want to check updates..
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 much every time I look at memory usage numbers with other engineers there is always a long discussion about what they actually mean that only results in a vague conclusion. Note we now have much more extensive documentation on Managing Your.. processes also using that page. This way you can in theory add up the pss across all processes to see the total RAM they are using and compare pss between processes to get a rough idea of their relative weight. The other interesting metric here.. saw in meminfo. Why is that Well procrank uses a different kernel mechanism to collect its data than meminfo does and they give slightly different results. Why is that Honestly I haven't a clue. I believe procrank may be the more accurate one.....
How to pick an image from gallery (SD Card) for my app in Android? http://stackoverflow.com/questions/2507898/how-to-pick-an-image-from-gallery-sd-card-for-my-app-in-android android image android gallery share improve this question The other answers explained how to send the intent but they didn't explain well how to handle the response. Here's some sample code on how to do that protected void onActivityResult..
Launch custom android application from android browser http://stackoverflow.com/questions/2958701/launch-custom-android-application-from-android-browser android name android.intent.action.VIEW intent filter Then when the user clicks on a link to twitter in the browser they will be asked what application to use in order to complete the action the browser or your application. Of course if you.. handle my.special.scheme type of uris . The only downside to this is that if the user doesn't have the app installed they'll get a nasty error. And I'm not sure there's any way to check. Edit To answer your question you can use getIntent .getData..
How to draw a path on a map using kml file? http://stackoverflow.com/questions/3109158/how-to-draw-a-path-on-a-map-using-kml-file Examples of paths. Note that the tessellate tag is by default set to 0. If you want to create tessellated lines they must be authored or edited directly in KML. description Style id yellowLineGreenPoly LineStyle color 7f00ffff color width..
Auto Scale TextView Text to Fit within Bounds http://stackoverflow.com/questions/5033012/auto-scale-textview-text-to-fit-within-bounds small enough to fit entirely on the screen. I've seen a few cases on StackOverflow where auto resizing was needed but they are either very special cases with hack solutions have no solution or involve re drawing the TextView recursively until.. way to auto resize a textview to fit wrapped in its getHeight and getWidth bounds Thanks to everyone who shared what they had I recommend Chase's solution for most cases and I've listed some alternatives in my answer. android automation drawing..
How do I do a lazy load of images in ListView http://stackoverflow.com/questions/541966/how-do-i-do-a-lazy-load-of-images-in-listview Is there a way to lazy load the images so while the text displays the UI is not locked up and images are displayed as they are downloaded The number of images is not fixed. android image url android listview share improve this question Here's..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables and Diane's roles in maintaining the Android platform I cannot in good faith recommend ignoring their advice. What they say goes to a certain extent. I do wish to disagree extremely strongly with the opinions Diane in particular expressed with.. counter the numerous downsides to Singletons. I do not argue that Singletons cannot work well but I do argue that they are generally the product of either a bad API or a lazy programmer. I disagree quite strongly with Diane's viewpoint which..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context for a Button in an Activity and need a Context . Rather than using MyActivity.this to get at the outer class' this they use getApplicationContext or getBaseContext to get a Context object. You only use getApplicationContext when you know you.. cannot be garbage collected. Some developers use custom subclasses of Application for their own global data which they retrieve via getApplicationContext . That's certainly possible. I prefer static data members if for no other reason than..
How did Google manage to do this? Slide ActionBar in Android application http://stackoverflow.com/questions/11234375/how-did-google-manage-to-do-this-slide-actionbar-in-android-application I really want to implement this the side navigation in an app of my own does anyone know how Google managed to do this They seem to have pulled the current window aside and put in a fly in navigation of their own. android android layout android..
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen Android prefers PNG for bitmap image files accepts JPEG and discourages GIF. However PNG and JPEG are not equivalents. They have different quality trade offs and PNG is not always best JPEG can offer up to 50 file size reductions over PNG which..
Eclipse error: R cannot be resolved to a variable [duplicate] http://stackoverflow.com/questions/16642604/eclipse-error-r-cannot-be-resolved-to-a-variable to a variable&rdquo 36 answers I am getting this classic error in Eclipse IDE. I am bored of Eclipse's bugs. They driving me mad. I almost tried everything which suggested as solution by Googling . None of them worked. My project was..
Inner class can access but not update values - AsyncTask http://stackoverflow.com/questions/18517400/inner-class-can-access-but-not-update-values-asynctask multithreading android asynctask share improve this question How can I ensure that the values remain updated They will be updated since they are member variables. However since AsyncTask is asynchrounous they might not be updated yet.. that mean that any values updated in the new thread will be lost once that thread returns No they shouldn't be lost . They probably just haven't been changed in the AsyncTask when you check them. Since this isn't your actual code I can't see when..
How do I get the SharedPreferences from a PreferenceActivity in Android? http://stackoverflow.com/questions/2614719/how-do-i-get-the-sharedpreferences-from-a-preferenceactivity-in-android or activity. For supporting this Android provides a simple set of APIs. Preferences are typically name value pairs. They can be stored as Shared Preferences across various activities in an application note currently it cannot be shared across..
How to Read MMS Data in Android? http://stackoverflow.com/questions/3012287/how-to-read-mms-data-in-android body cursor.getString cursor.getColumnIndex body How to get data from a MMS data MMSs are a little bit different. They can be built with different parts text audio images etc. so here will see how to retrieve each kind of data separately...
Developing cross platform mobile application [closed] http://stackoverflow.com/questions/3369413/developing-cross-platform-mobile-application wrong philosophical focus. All the selling points for cross plaform tools are the benefits they bring to developers . They are sold on the idea that they allow the developers to write once run anywhere. They are sold on the idea that they allow.. they bring to developers . They are sold on the idea that they allow the developers to write once run anywhere. They are sold on the idea that they allow the developers to expand their market without learning new APIs. They are sold on the.. anywhere. They are sold on the idea that they allow the developers to expand their market without learning new APIs. They are sold on the idea that they allow the developers to slash cost and time to market. What cross plaform tool are NOT sold..
What is the Android UiThread (UI thread) http://stackoverflow.com/questions/3652560/what-is-the-android-uithread-ui-thread below for more info on this it provides these background threads the ability to execute code that can modify the UI. They do this by putting the UI modifying code in a Runnable object and passing it to the RunOnUiThread method. For more info..
No generated R.java file in my project http://stackoverflow.com/questions/4085959/no-generated-r-java-file-in-my-project import android.view.View import android.widget.ListView import android.widget.SimpleCursorAdapter They are created by the Eclipse command Ctrl Shift O . android eclipse adt generated code r.java file share improve this question..
Difference between Activity Context and Application Context http://stackoverflow.com/questions/4128589/difference-between-activity-context-and-application-context context and application context despite sharing the wording 'Context' android context share improve this question They are both instances of Context but the application instance is tied to the lifecycle of the application while the Activity..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare the replicated movement array to the recorded one. The thing is how can I compare the two arrays in a smart way They will never have exactly the same values but they can be somewhat the same. Am I at all on the right track here UPDATE I..
install / uninstall APKs programmatically (PackageManager vs Intents) http://stackoverflow.com/questions/6813322/install-uninstall-apks-programmatically-packagemanager-vs-intents .packageName null startActivity intent This is obviously not the way e.g. Android Market installs uninstalls packages. They use a richer version of the PackageManager. This can bee seen by downloading the Android source code from the Android Git..
Handler vs AsyncTask vs Thread http://stackoverflow.com/questions/6964011/handler-vs-asynctask-vs-thread some exceptions but that is not an important point . What does it mean It means no magic in AsyncTask or Handler . They just make your job easier as a developer. For example If Program A calls method A method A would run in a different thread.. thread isn't thread safe in most of time in other words DANGEROUS. That is why you should use Handler and AsyncTask . They do most of the work for you you just need to know what methods to override. Difference Handler and AsyncTask Use AsyncTask.. will see Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue They may seem strange at first.Just understand that each thread has each message queue. like a To do List and thread will take..
Java 7 language features with Android http://stackoverflow.com/questions/7153989/java-7-language-features-with-android does inherit from AutoCloseable SafeVarargs is really missing though . We could confirm its existence via reflection. They are hidden simply because the Javadoc has the @hide tag which caused the android.jar not to include them. There is already..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context programmers use getApplicationContext or getBaseContext to a lesser extent because their Java experience is limited. They implement an inner class e.g. an OnClickListener for a Button in an Activity and need a Context . Rather than using MyActivity.this..
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