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2014/10/16 ¤W¤È 08:28:05
android Programming Glossary: you'rehttp://stackoverflow.com/questions/1016896/how-to-get-screen-dimensions display.getSize size int width size.x int height size.y If you're not in an Activity you can get the default Display via WINDOW_SERVICE.. int height display.getHeight deprecated For the use case you're describing however a margin padding in the layout seems more..
http://stackoverflow.com/questions/1106202/android-ocr are Aspire and Tesseract . Neither are straight up Java so you're not going to get a drop in Android OCR library. However Tesseract..
Android: ListView elements with multiple clickable buttons http://stackoverflow.com/questions/1709166/android-listview-elements-with-multiple-clickable-buttons getView method a setOnClickListener for the buttons you're using. Any data associated with the button has to be added with..
how to connect android emulator to the internet http://stackoverflow.com/questions/2039964/how-to-connect-android-emulator-to-the-internet worked for me. Assuming your problem is occurring when you're on a wireless network and you have a LAN card installed the.. its DNS settings from that LAN card. Not a problem when you're connected via that LAN but utterly useless if you're on a wireless.. when you're connected via that LAN but utterly useless if you're on a wireless connection. I noticed this when I was on my laptop...
How do I pass data between activities in Android? http://stackoverflow.com/questions/2091465/how-do-i-pass-data-between-activities-in-android pass the session id to the signout activity in the intent you're using to start the activity Intent intent new Intent getBaseContext..
How to send an object from one Android Activity to another using Intents? http://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents intent android activity share improve this question If you're just passing objects around then Parcelable was designed for..
Display PDF within app on Android? http://stackoverflow.com/questions/2456344/display-pdf-within-app-on-android than most of the other jar pdf libraries out there if you're planning to use it in Android platform i've had tested several..
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 one used in the filtering process. Once you've got that you're finally able to decode the image into a bitmap with the last..
Open another application from your own (intent) http://stackoverflow.com/questions/2780102/open-another-application-from-your-own-intent the first activity with main launcher Get the ActivityInfo you're interested in From the ActivityInfo get the packageName and..
Launch custom android application from android browser http://stackoverflow.com/questions/2958701/launch-custom-android-application-from-android-browser 1 1234 You can do the above anywhere in your Activity but you're probably going to want to do it in onCreate . You can also use..
How to send a JSON object over Request with Android? http://stackoverflow.com/questions/3027066/how-to-send-a-json-object-over-request-with-android in a variable named jason has to do with anything. If you're not sure what exactly the server wants consider writing a test..
Activity restart on rotation Android http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android question Using the Application Class Depending on what you're doing in your initialization you could consider creating a new.. as a singleton and exposing the application variables you're initializing using getters and setters. NOTE You'll need to..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list not to avoid recycling of a view which could be reused. If you're using them anyway to solve your problem you probably didn't.. you have 1000 items and you do the view type hack then you're creating 1000 views hierarchies instead probably 10 which could.. 20 items or so but if you use that technique for big lists you're just wasting precious memory Here's an example void getItemViewType..
How to call Android contacts list? http://stackoverflow.com/questions/866769/how-to-call-android-contacts-list check that the returned request code matches the value you're expecting and that the result code is RESULT_OK . You can get..
How to handle screen orientation change when progress dialog and background thread active? http://stackoverflow.com/questions/1111980/how-to-handle-screen-orientation-change-when-progress-dialog-and-background-thre you switch orientations Android will create a new View. You're probably getting crashes because your background thread is trying..
Navigation Drawer (Google+ vs. YouTube) http://stackoverflow.com/questions/11377472/navigation-drawer-google-vs-youtube swipe left and a pull out half page menu will appear . You're right in that this isn't very consistent behavior but it doesn't..
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 provides instructions for it. It'll generate a Client ID . You're going to need that. Hold onto it. Edit I've been told that I'm..
I'm getting a java.lang.classnotfoundexception: com.mysql.jdbc.Driver http://stackoverflow.com/questions/13964392/im-getting-a-java-lang-classnotfoundexception-com-mysql-jdbc-driver wrong java android jdbc share improve this question You're getting a NoClassDefFoundError because your jar file is not..
Where does Android emulator store SQLite database? http://stackoverflow.com/questions/1510840/where-does-android-emulator-store-sqlite-database itself run emulator help for a description of options . You're best off using adb from the command line to jack into a running..
Permission to write to the SD card http://stackoverflow.com/questions/2121833/permission-to-write-to-the-sd-card patrick java android share improve this question You're right that the SD Card directory is sdcard but you shouldn't..
How to find serial number of Android device? http://stackoverflow.com/questions/2322234/how-to-find-serial-number-of-android-device work for any Android device with a sim slot or CDMA radio. You're on your own with that Android powered microwave share improve..
Android: Prompt user to save changes when Back button is pressed http://stackoverflow.com/questions/2459848/android-prompt-user-to-save-changes-when-back-button-is-pressed be great java android share improve this question You're not quite on the right track what you should be doing is overriding..
How to prevent Android bluetooth RFCOMM connection from dying immediately after .connect()? http://stackoverflow.com/questions/2660968/how-to-prevent-android-bluetooth-rfcomm-connection-from-dying-immediately-after has been solved Thanks a lot to Brad Denis and junkie You're the heroes This is the working code. It connects to Zeemote..
Activity has leaked window that was originally added http://stackoverflow.com/questions/2850573/activity-has-leaked-window-that-was-originally-added Native Method android share improve this question You're trying to show a Dialog after you've exited an Activity. share..
update sql database with ContentValues and the update-method http://stackoverflow.com/questions/3760774/update-sql-database-with-contentvalues-and-the-update-method android database sqlite share improve this question You're using the update function wrong. It should be like this String..
Can't create handler inside thread that has not called Looper.prepare() http://stackoverflow.com/questions/3875184/cant-create-handler-inside-thread-that-has-not-called-looper-prepare android toast ui thread share improve this question You're calling it from a worker thread. You need to call Toast.makeText..
How to create android spinner without down triangle on the right side of the widget http://stackoverflow.com/questions/4058360/how-to-create-android-spinner-without-down-triangle-on-the-right-side-of-the-wid and tweak the code a little depending on your needs . EDIT You're right following that post it was actually really simple You..
ByteBuffer not releasing memory http://stackoverflow.com/questions/5060307/bytebuffer-not-releasing-memory is reclaimed otherwise you would leak native memory . You're calling System.gc in hope the native memory is reclaimed immediately..
How do I set up IntelliJ IDEA for Android applications? http://stackoverflow.com/questions/5271182/how-do-i-set-up-intellij-idea-for-android-applications
Android crash when app is closed and reopened http://stackoverflow.com/questions/5318847/android-crash-when-app-is-closed-and-reopened without seeing the full Logcat it's hard to tell though . You're starting it every time the surface is created which will make..
Android download binary file problems http://stackoverflow.com/questions/576513/android-download-binary-file-problems only problem but you've got a classic Java glitch in there You're not counting on the fact that read is always allowed to return..
Android Fragment lifecycle over orientation changes http://stackoverflow.com/questions/8474104/android-fragment-lifecycle-over-orientation-changes fragments orientation share improve this question You're layering your Fragments one on top of the other. When a config..
Eclipse, Android, Scala made easy but still does not work http://stackoverflow.com/questions/9924015/eclipse-android-scala-made-easy-but-still-does-not-work Right click on the project Add AndroidProguardScala nature You're done. Scalafying android code Now good things happen. First..
http://stackoverflow.com/questions/1016896/how-to-get-screen-dimensions getWindowManager .getDefaultDisplay Point size new Point display.getSize size int width size.x int height size.y If you're not in an Activity you can get the default Display via WINDOW_SERVICE WindowManager wm WindowManager ctx.getSystemService..
http://stackoverflow.com/questions/1106202/android-ocr phone. That aside to my knowledge the popular OCR libraries are Aspire and Tesseract . Neither are straight up Java so you're not going to get a drop in Android OCR library. However Tesseract is open source Google Code hosted infact so you can throw..
Android: ListView elements with multiple clickable buttons http://stackoverflow.com/questions/1709166/android-listview-elements-with-multiple-clickable-buttons easier than I thought. You can simply add in your custom adapter's getView method a setOnClickListener for the buttons you're using. Any data associated with the button has to be added with myButton.setTag in the getView and can be accessed in the..
how to connect android emulator to the internet http://stackoverflow.com/questions/2039964/how-to-connect-android-emulator-to-the-internet may have addressed this however obliquely but here's what worked for me. Assuming your problem is occurring when you're on a wireless network and you have a LAN card installed the issue is that the emulator tries to obtain its DNS settings.. card installed the issue is that the emulator tries to obtain its DNS settings from that LAN card. Not a problem when you're connected via that LAN but utterly useless if you're on a wireless connection. I noticed this when I was on my laptop. So.. to obtain its DNS settings from that LAN card. Not a problem when you're connected via that LAN but utterly useless if you're on a wireless connection. I noticed this when I was on my laptop. So how to fix Simple Disable your LAN card. Really. Just..
How do I pass data between activities in Android? http://stackoverflow.com/questions/2091465/how-do-i-pass-data-between-activities-in-android this question The easiest way to do this would be to pass the session id to the signout activity in the intent you're using to start the activity Intent intent new Intent getBaseContext SignoutActivity.class intent.putExtra EXTRA_SESSION_ID..
How to send an object from one Android Activity to another using Intents? http://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents the putExtra method of the class Intent android android intent android activity share improve this question If you're just passing objects around then Parcelable was designed for this. It requires a little more effort to use than using Java's..
Display PDF within app on Android? http://stackoverflow.com/questions/2456344/display-pdf-within-app-on-android to use it within your application. But the results are better than most of the other jar pdf libraries out there if you're planning to use it in Android platform i've had tested several pdf libraries projects including andpdf pdfbox . I've used..
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
Open another application from your own (intent) http://stackoverflow.com/questions/2780102/open-another-application-from-your-own-intent MAIN or packageManager.resolveActivity intent 0 to get the first activity with main launcher Get the ActivityInfo you're interested in From the ActivityInfo get the packageName and name Finally create another intent with with category LAUNCHER..
Launch custom android application from android browser http://stackoverflow.com/questions/2958701/launch-custom-android-application-from-android-browser String first params.get 0 status String second params.get 1 1234 You can do the above anywhere in your Activity but you're probably going to want to do it in onCreate . You can also use params.size to get the number of path segments in the Uri..
How to send a JSON object over Request with Android? http://stackoverflow.com/questions/3027066/how-to-send-a-json-object-over-request-with-android to send an HTTP POST. I don't understand what sending the object in a variable named jason has to do with anything. If you're not sure what exactly the server wants consider writing a test program to send various strings to the server until you know..
Activity restart on rotation Android http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android android rotation android activity share improve this question Using the Application Class Depending on what you're doing in your initialization you could consider creating a new class that extends Application and moving your initialization.. it. It's good practice to expose the instance of this class as a singleton and exposing the application variables you're initializing using getters and setters. NOTE You'll need to specify the name of your new Application class in the manifest..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list list item and a separator which contains a title only and not to avoid recycling of a view which could be reused. If you're using them anyway to solve your problem you probably didn't understand the process I explained before. So e.g. you have.. didn't understand the process I explained before. So e.g. you have 1000 items and you do the view type hack then you're creating 1000 views hierarchies instead probably 10 which could be reused easily . That shouldn't matter that much if you.. easily . That shouldn't matter that much if you have only 20 items or so but if you use that technique for big lists you're just wasting precious memory Here's an example void getItemViewType int position return isItemAtPositionSeperator position..
How to call Android contacts list? http://stackoverflow.com/questions/866769/how-to-call-android-contacts-list 'select a contact' Activity you launched in step 2. You should check that the returned request code matches the value you're expecting and that the result code is RESULT_OK . You can get the URI of the selected contact by calling getData on the..
How to handle screen orientation change when progress dialog and background thread active? http://stackoverflow.com/questions/1111980/how-to-handle-screen-orientation-change-when-progress-dialog-and-background-thre activity android dialog share improve this question When you switch orientations Android will create a new View. You're probably getting crashes because your background thread is trying to change the state on the old one. It may also be having..
Navigation Drawer (Google+ vs. YouTube) http://stackoverflow.com/questions/11377472/navigation-drawer-google-vs-youtube version of the pull out menu when you are at the left most page swipe left and a pull out half page menu will appear . You're right in that this isn't very consistent behavior but it doesn't seem like there is a 100 consensus within the Android team..
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 used the wrong one but try to get that right anyways Google provides instructions for it. It'll generate a Client ID . You're going to need that. Hold onto it. Edit I've been told that I'm mistaken and that you only need to turn on Drive API Drive..
I'm getting a java.lang.classnotfoundexception: com.mysql.jdbc.Driver http://stackoverflow.com/questions/13964392/im-getting-a-java-lang-classnotfoundexception-com-mysql-jdbc-driver java projects not android ones and it used to work. What's wrong java android jdbc share improve this question You're getting a NoClassDefFoundError because your jar file is not available at runtime. In order for it to be available at runtime..
Where does Android emulator store SQLite database? http://stackoverflow.com/questions/1510840/where-does-android-emulator-store-sqlite-database G1 looking icon in the toolbar or through the emulator binary itself run emulator help for a description of options . You're best off using adb from the command line to jack into a running emulator. If you can get the specific directory and filename..
Permission to write to the SD card http://stackoverflow.com/questions/2121833/permission-to-write-to-the-sd-card the permission on a folder file to be able to write to it thanks patrick java android share improve this question You're right that the SD Card directory is sdcard but you shouldn't be hard coding it. Instead make a call to Environment.getExternalStorageDirectory..
How to find serial number of Android device? http://stackoverflow.com/questions/2322234/how-to-find-serial-number-of-android-device
Android: Prompt user to save changes when Back button is pressed http://stackoverflow.com/questions/2459848/android-prompt-user-to-save-changes-when-back-button-is-pressed way to accomplish what I'm trying to do here Any help would be great java android share improve this question You're not quite on the right track what you should be doing is overriding onKeyDown and listening for the back key then overriding..
How to prevent Android bluetooth RFCOMM connection from dying immediately after .connect()? http://stackoverflow.com/questions/2660968/how-to-prevent-android-bluetooth-rfcomm-connection-from-dying-immediately-after connection from dying immediately after .connect This problem has been solved Thanks a lot to Brad Denis and junkie You're the heroes This is the working code. It connects to Zeemote and reads data from it. Code public class ZeeTest extends Activity..
Activity has leaked window that was originally added http://stackoverflow.com/questions/2850573/activity-has-leaked-window-that-was-originally-added
update sql database with ContentValues and the update-method http://stackoverflow.com/questions/3760774/update-sql-database-with-contentvalues-and-the-update-method insert method and that worked quite fine. many thx florian android database sqlite share improve this question You're using the update function wrong. It should be like this String where id String whereArgs new String String.valueOf id db.update..
Can't create handler inside thread that has not called Looper.prepare() http://stackoverflow.com/questions/3875184/cant-create-handler-inside-thread-that-has-not-called-looper-prepare Toast.java 68 at android.widget.Toast.makeText Toast.java 231 android toast ui thread share improve this question You're calling it from a worker thread. You need to call Toast.makeText and most other functions dealing with the UI from within..
How to create android spinner without down triangle on the right side of the widget http://stackoverflow.com/questions/4058360/how-to-create-android-spinner-without-down-triangle-on-the-right-side-of-the-wid you will only need to remove the arrow from the layout and tweak the code a little depending on your needs . EDIT You're right following that post it was actually really simple You have to do two things. First create a styles.xml file under..
ByteBuffer not releasing memory http://stackoverflow.com/questions/5060307/bytebuffer-not-releasing-memory the ByteBuffer instance gets garbage collected the native memory is reclaimed otherwise you would leak native memory . You're calling System.gc in hope the native memory is reclaimed immediately . However calling System.gc is only a request which..
How do I set up IntelliJ IDEA for Android applications? http://stackoverflow.com/questions/5271182/how-do-i-set-up-intellij-idea-for-android-applications
Android crash when app is closed and reopened http://stackoverflow.com/questions/5318847/android-crash-when-app-is-closed-and-reopened . The error you're getting is probably caused by your Thread without seeing the full Logcat it's hard to tell though . You're starting it every time the surface is created which will make your application crash because you can't call Thread.start..
Android download binary file problems http://stackoverflow.com/questions/576513/android-download-binary-file-problems share improve this question I don't know if it's the only problem but you've got a classic Java glitch in there You're not counting on the fact that read is always allowed to return fewer bytes than you ask for. Thus your read could get less..
Android Fragment lifecycle over orientation changes http://stackoverflow.com/questions/8474104/android-fragment-lifecycle-over-orientation-changes intent filter activity application android activity android fragments orientation share improve this question You're layering your Fragments one on top of the other. When a config change occurs the old Fragment isn't destroyed it adds itself..
Eclipse, Android, Scala made easy but still does not work http://stackoverflow.com/questions/9924015/eclipse-android-scala-made-easy-but-still-does-not-work usual Right click on the project Configure Add Scala nature Right click on the project Add AndroidProguardScala nature You're done. Scalafying android code Now good things happen. First you can scalafy any activity and you will get access to scala..
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