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2014/10/16 ¤W¤È 08:10:34
android Programming Glossary: bitAndroid - what's the difference between the various methods to get a Context? http://stackoverflow.com/questions/1026973/android-whats-the-difference-between-the-various-methods-to-get-a-context between the various methods to get a Context In various bits of Android code I've seen public class MyActivity extends Activity.. Activity and Application. Reading the article a little bit further tells about the difference between the two and when..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works my experience and i hope now you people will have a little bit understanding of ListView framework how it works as it is really..
How to make a nice looking ListView filter on Android [closed] http://stackoverflow.com/questions/1737009/how-to-make-a-nice-looking-listview-filter-on-android to get the input from the EditText . This actually takes a bit of thought. You could add an OnKeyListener to your EditText..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon don't terminate anything they just leave. iPhone is a bit different in that it only presently allows one thing to run..
How to get the Android device's primary e-mail address http://stackoverflow.com/questions/2112965/how-to-get-the-android-devices-primary-e-mail-address accessing their profile. Accessing the user profile is a bit heavyweight as it requires two permissions more on that below..
How to emulate GPS location in the Android Emulator? http://stackoverflow.com/questions/2279647/how-to-emulate-gps-location-in-the-android-emulator you can use a kml file with a route as well it is a little bit described in this article . I can't find a better source at..
Display PDF within app on Android? http://stackoverflow.com/questions/2456344/display-pdf-within-app-on-android my app and finally found it. The library however it's a bit tricky to use. It's not a standard Java jar library but rather..
How to make an ImageView to have rounded corners http://stackoverflow.com/questions/2459916/how-to-make-an-imageview-to-have-rounded-corners helper within an ImageHelper class and extended it just a bit to pass in the amount of feathering I need for a given image... public static Bitmap getRoundedCornerBitmap Bitmap bitmap int pixels Bitmap output Bitmap.createBitmap bitmap.getWidth.. Bitmap bitmap int pixels Bitmap output Bitmap.createBitmap bitmap.getWidth bitmap .getHeight Config.ARGB_8888 Canvas canvas..
How can I get zoom functionality for images? http://stackoverflow.com/questions/2537238/how-can-i-get-zoom-functionality-for-images I found two ways overwriting ImageView that seems a little bit too much for such a common problem. using a webview but with..
Is there a unique Android device ID? http://stackoverflow.com/questions/2785485/is-there-a-unique-android-device-id returns the Android ID as an unique 64 bit hex string. import android.provider.Settings.Secure private..
Sending images using Http Post http://stackoverflow.com/questions/2935946/sending-images-using-http-post
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android documents and references to kSoap2 and then some bit about parsing it all manually with SAX . OK that's fine but..
What is the simplest and most robust way to get the user's current location in Android? http://stackoverflow.com/questions/3145089/what-is-the-simplest-and-most-robust-way-to-get-the-users-current-location-in-a The LocationManager API in android seems like it's a bit of a pain to use for an application that only needs an occasional..
http://stackoverflow.com/questions/3815090/webview-and-html5-video the story layout on the server I can control the content a bit better without forcing people to keep updating an app. So if..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android realize she's an Android framework engineer thanks. We are bit by bit removing all singletons from our project in favor of.. she's an Android framework engineer thanks. We are bit by bit removing all singletons from our project in favor of lightweight..
Strange out of memory issue while loading an image to a Bitmap object http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object I am not sure how I can put a resized image I.e. Smaller bit size not pixel as the src for the image button on the fly. So.. adapter easily row by row where I can resize on the fly bit wise This would be preferable as I also need to make some changes.. ERROR AndroidRuntime 3896 java.lang.OutOfMemoryError bitmap size exceeds VM budget 01 25 05 05 49.917 ERROR AndroidRuntime..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser The org.xml.sax SAX handler implementation is a bit different. Here you don't specify or declare you XML structure..
ViewPager PagerAdapter not updating the View http://stackoverflow.com/questions/7263291/viewpager-pageradapter-not-updating-the-view ways to achieve this. The first option is easier but bit more inefficient. Override getItemPosition in your PagerAdapter..
Can't start Eclipse - Java was started but returned exit code=13 http://stackoverflow.com/questions/11461607/cant-start-eclipse-java-was-started-but-returned-exit-code-13 Runtime Environment build 1.6.0_27 b07 Java HotSpot TM 64 Bit Server VM build 20.2 b06 mixed mode Check that this is the version..
Gradle build errors after updating Android Studio http://stackoverflow.com/questions/17125175/gradle-build-errors-after-updating-android-studio built on June 14 2013 JDK 1.6.0_43 VM Java HotSpot TM 64 Bit Server VM by Apple Inc. Does anyone know why I'm getting this..
Android - How to set the wallpaper image? [duplicate] http://stackoverflow.com/questions/2205092/android-how-to-set-the-wallpaper-image new File imagePath bis new BufferedInputStream is Bitmap bitmap BitmapFactory.decodeStream bis Bitmap useThisBitmap.. imagePath bis new BufferedInputStream is Bitmap bitmap BitmapFactory.decodeStream bis Bitmap useThisBitmap Bitmap.createScaledBitmap.. is Bitmap bitmap BitmapFactory.decodeStream bis Bitmap useThisBitmap Bitmap.createScaledBitmap bitmap parent.getWidth..
Is Sun Java really necessary for using Android SDK on Ubuntu 10.10? I prefer OpenJDK http://stackoverflow.com/questions/4074711/is-sun-java-really-necessary-for-using-android-sdk-on-ubuntu-10-10-i-prefer-ope Environment IcedTea6 1.9.1 6b20 1.9.1 1ubuntu3 OpenJDK 64 Bit Server VM build 17.0 b16 mixed mode And eclipse plugin too ..
Parcelable where/when is describeContents() used? http://stackoverflow.com/questions/4076946/parcelable-where-when-is-describecontents-used Description for CONTENTS_FILE_DESCRIPTOR in the API ref is Bit masks for use with describeContents each bit represents a kind..
Help: JDK not detected problem during Android SDK Tools setup [duplicate] http://stackoverflow.com/questions/4588548/help-jdk-not-detected-problem-during-android-sdk-tools-setup this problem android share improve this question Bit late answering this but for anyone else having problems just..
How to get Sampling rate and frequency of music file (MP3) in android? http://stackoverflow.com/questions/5140085/how-to-get-sampling-rate-and-frequency-of-music-file-mp3-in-android the details of the playing song i.e. Artist Name Duration Bit rate and sampling frequency. I can get Artist Name and duration.. MediaStore.Audio.Media library . But i am unable to get Bit rate and sampling frequency of the same file. So how can i get.. bits 316 seconds 273426.147 bits sec or ~273kbps Actual Bitrate 259kbps Since most audio files have a known set of valid..
TCP-based RPC server (Erlang or something similar?) for iOS/Android app communication http://stackoverflow.com/questions/6614343/tcp-based-rpc-server-erlang-or-something-similar-for-ios-android-app-communic protocol. Erlang excels well at this especially with the Bit Syntax expressions. However still you could use plain text as..
Accuracy of MediaPlayer.seekTo(int msecs) http://stackoverflow.com/questions/6845161/accuracy-of-mediaplayer-seektoint-msecs that doesnot build the timestamp table then CBR Constant Bit Rate Since the bit rate is constant we can skip necessary number.. we can skip necessary number of bytes to a given time Bitrate timeToSeek bytes to be skipped VBR Variable Bit rate The.. time Bitrate timeToSeek bytes to be skipped VBR Variable Bit rate The bit rate is not constant it keeps varying. So in this..
Eclipse, adb, and ddms not detecting Android Emulator http://stackoverflow.com/questions/8469723/eclipse-adb-and-ddms-not-detecting-android-emulator sdk the java sdk and eclipse. My computer is Windows 7 64 Bit but I have the 32 bit Java SDK and Eclipse installed since hearing..
Full-width Spinner in ActionBar http://stackoverflow.com/questions/8941098/full-width-spinner-in-actionbar layout android actionbar share improve this question Bit annoying that I've just done it but here is a method of doing..
http://stackoverflow.com/questions/9272232/fft-library-in-android-sdk fft double x double y int i j k n1 n2 a double c s t1 t2 Bit reverse j 0 n2 n 2 for i 1 i n 1 i n1 n2 while j n1 j j n1..
Android - what's the difference between the various methods to get a Context? http://stackoverflow.com/questions/1026973/android-whats-the-difference-between-the-various-methods-to-get-a-context what's the difference between the various methods to get a Context In various bits of Android code I've seen public class MyActivity extends Activity public void method mContext this since Activity extends.. Android application you usually have two kinds of Context Activity and Application. Reading the article a little bit further tells about the difference between the two and when you might want to consider using the application Context Activity.getApplicationContext..
How ListView's recycling mechanism works http://stackoverflow.com/questions/11945563/how-listviews-recycling-mechanism-works so i thought other beginners like me can get help off my experience and i hope now you people will have a little bit understanding of ListView framework how it works as it is really messy and tricky so beginners found too much problem understanding..
How to make a nice looking ListView filter on Android [closed] http://stackoverflow.com/questions/1737009/how-to-make-a-nice-looking-listview-filter-on-android from earlier into a variable called 'adapter'. Next step is to get the input from the EditText . This actually takes a bit of thought. You could add an OnKeyListener to your EditText . However this listener only receives some key events . For..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon had a chance to play with one yet . In all of those users don't terminate anything they just leave. iPhone is a bit different in that it only presently allows one thing to run at a time with a few exceptions and so the act of leaving implies..
How to get the Android device's primary e-mail address http://stackoverflow.com/questions/2112965/how-to-get-the-android-devices-primary-e-mail-address Ice Cream Sandwich you can get the user's email addresses by accessing their profile. Accessing the user profile is a bit heavyweight as it requires two permissions more on that below but email addresses are fairly sensitive pieces of data so..
How to emulate GPS location in the Android Emulator? http://stackoverflow.com/questions/2279647/how-to-emulate-gps-location-in-the-android-emulator
Display PDF within app on Android? http://stackoverflow.com/questions/2456344/display-pdf-within-app-on-android the reliable libraries to support that kind of feature into my app and finally found it. The library however it's a bit tricky to use. It's not a standard Java jar library but rather it's JNI library C language for Android and you need to compile..
How to make an ImageView to have rounded corners http://stackoverflow.com/questions/2459916/how-to-make-an-imageview-to-have-rounded-corners but I've used it and it's works wonderfully. I used it as a helper within an ImageHelper class and extended it just a bit to pass in the amount of feathering I need for a given image. Final code looks like this package com.company.app.utils import.. import android.graphics.PorterDuff.Mode public class ImageHelper public static Bitmap getRoundedCornerBitmap Bitmap bitmap int pixels Bitmap output Bitmap.createBitmap bitmap.getWidth bitmap .getHeight Config.ARGB_8888 Canvas canvas new Canvas.. ImageHelper public static Bitmap getRoundedCornerBitmap Bitmap bitmap int pixels Bitmap output Bitmap.createBitmap bitmap.getWidth bitmap .getHeight Config.ARGB_8888 Canvas canvas new Canvas output final int color 0xff424242 final Paint paint..
How can I get zoom functionality for images? http://stackoverflow.com/questions/2537238/how-can-i-get-zoom-functionality-for-images the user to zoom in and out and pan the image Until now I found two ways overwriting ImageView that seems a little bit too much for such a common problem. using a webview but with less control over the overall layout etc. android zoom imageview..
Is there a unique Android device ID? http://stackoverflow.com/questions/2785485/is-there-a-unique-android-device-id uniqueidentifier share improve this question Settings.Secure#ANDROID_ID returns the Android ID as an unique 64 bit hex string. import android.provider.Settings.Secure private String android_id Secure.getString getContext .getContentResolver..
Sending images using Http Post http://stackoverflow.com/questions/2935946/sending-images-using-http-post
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android with Android. All I've been able to find are either very convoluted documents and references to kSoap2 and then some bit about parsing it all manually with SAX . OK that's fine but it's 2008 so I figured there should be some good library for..
What is the simplest and most robust way to get the user's current location in Android? http://stackoverflow.com/questions/3145089/what-is-the-simplest-and-most-robust-way-to-get-the-users-current-location-in-a most robust way to get the user's current location in Android The LocationManager API in android seems like it's a bit of a pain to use for an application that only needs an occasional and rough approximation of the user's location. The app..
http://stackoverflow.com/questions/3815090/webview-and-html5-video xml from the server reformat it in the app .. by keeping the story layout on the server I can control the content a bit better without forcing people to keep updating an app. So if I can convince WebView to handle tags like the native browser..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android I very much disagree with Dianne Hackborn and yes I realize she's an Android framework engineer thanks. We are bit by bit removing all singletons from our project in favor of lightweight task scoped objects which can easiliy be re created.. I very much disagree with Dianne Hackborn and yes I realize she's an Android framework engineer thanks. We are bit by bit removing all singletons from our project in favor of lightweight task scoped objects which can easiliy be re created when..
Strange out of memory issue while loading an image to a Bitmap object http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object the cursor and ListAdapter . This makes it pretty simple but I am not sure how I can put a resized image I.e. Smaller bit size not pixel as the src for the image button on the fly. So I just resized the image that came off the phone camera. The.. launch the 2nd activity. Is there a way I can build the list adapter easily row by row where I can resize on the fly bit wise This would be preferable as I also need to make some changes to the properties of the widgets elements in each row.. thread main exiting due to uncaught exception 01 25 05 05 49.917 ERROR AndroidRuntime 3896 java.lang.OutOfMemoryError bitmap size exceeds VM budget 01 25 05 05 49.917 ERROR AndroidRuntime 3896 at android.graphics.BitmapFactory.nativeDecodeStream..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser the code get quite repeating and bloated. org.xml.sax Implementation The org.xml.sax SAX handler implementation is a bit different. Here you don't specify or declare you XML structure but just listening for events. The most widely used ones..
ViewPager PagerAdapter not updating the View http://stackoverflow.com/questions/7263291/viewpager-pageradapter-not-updating-the-view viewpager share improve this question There are several ways to achieve this. The first option is easier but bit more inefficient. Override getItemPosition in your PagerAdapter like this public int getItemPosition Object object return..
Can't start Eclipse - Java was started but returned exit code=13 http://stackoverflow.com/questions/11461607/cant-start-eclipse-java-was-started-but-returned-exit-code-13 7 with 64 bit Java 6 I get java version 1.6.0_27 Java TM SE Runtime Environment build 1.6.0_27 b07 Java HotSpot TM 64 Bit Server VM build 20.2 b06 mixed mode Check that this is the version being used by Eclipse as shown in your error code. If..
Gradle build errors after updating Android Studio http://stackoverflow.com/questions/17125175/gradle-build-errors-after-updating-android-studio Android Studio I O Preview AI 130.709792 Build #AI 130.709792 built on June 14 2013 JDK 1.6.0_43 VM Java HotSpot TM 64 Bit Server VM by Apple Inc. Does anyone know why I'm getting this and what I can do to fix it android gradle android studio..
Android - How to set the wallpaper image? [duplicate] http://stackoverflow.com/questions/2205092/android-how-to-set-the-wallpaper-image you can use this code if You have Image path. is new FileInputStream new File imagePath bis new BufferedInputStream is Bitmap bitmap BitmapFactory.decodeStream bis Bitmap useThisBitmap Bitmap.createScaledBitmap bitmap parent.getWidth parent.getHeight.. code if You have Image path. is new FileInputStream new File imagePath bis new BufferedInputStream is Bitmap bitmap BitmapFactory.decodeStream bis Bitmap useThisBitmap Bitmap.createScaledBitmap bitmap parent.getWidth parent.getHeight true bitmap.recycle.. is new FileInputStream new File imagePath bis new BufferedInputStream is Bitmap bitmap BitmapFactory.decodeStream bis Bitmap useThisBitmap Bitmap.createScaledBitmap bitmap parent.getWidth parent.getHeight true bitmap.recycle if imagePath null..
Is Sun Java really necessary for using Android SDK on Ubuntu 10.10? I prefer OpenJDK http://stackoverflow.com/questions/4074711/is-sun-java-really-necessary-for-using-android-sdk-on-ubuntu-10-10-i-prefer-ope
Parcelable where/when is describeContents() used? http://stackoverflow.com/questions/4076946/parcelable-where-when-is-describecontents-used be used in describeContents to create bitmask return value. Description for CONTENTS_FILE_DESCRIPTOR in the API ref is Bit masks for use with describeContents each bit represents a kind of object considered to have potential special significance..
Help: JDK not detected problem during Android SDK Tools setup [duplicate] http://stackoverflow.com/questions/4588548/help-jdk-not-detected-problem-during-android-sdk-tools-setup Java SE development kit JDK not found. Has anyone experienced this problem android share improve this question Bit late answering this but for anyone else having problems just press 'Back' then 'Next' it picks it up the second time share..
How to get Sampling rate and frequency of music file (MP3) in android? http://stackoverflow.com/questions/5140085/how-to-get-sampling-rate-and-frequency-of-music-file-mp3-in-android I am developing audio player in android. So i want to add the details of the playing song i.e. Artist Name Duration Bit rate and sampling frequency. I can get Artist Name and duration of a music file by using MediaStore.Audio.Media library.. I can get Artist Name and duration of a music file by using MediaStore.Audio.Media library . But i am unable to get Bit rate and sampling frequency of the same file. So how can i get the same As i know it can be done by using native library... 87013064 bits Length 5 16 316 Seconds Which gives 87013064 bits 316 seconds 273426.147 bits sec or ~273kbps Actual Bitrate 259kbps Since most audio files have a known set of valid bitrate levels you can use that to step the bit rate to the..
TCP-based RPC server (Erlang or something similar?) for iOS/Android app communication http://stackoverflow.com/questions/6614343/tcp-based-rpc-server-erlang-or-something-similar-for-ios-android-app-communic Erlang will do quite well however lets start from your protocol. Erlang excels well at this especially with the Bit Syntax expressions. However still you could use plain text as you wish. JSON would need a parser Mochijson2.erl found in..
Accuracy of MediaPlayer.seekTo(int msecs) http://stackoverflow.com/questions/6845161/accuracy-of-mediaplayer-seektoint-msecs there can be two cases If there is no parser or a parser that doesnot build the timestamp table then CBR Constant Bit Rate Since the bit rate is constant we can skip necessary number of bytes to a given time Bitrate timeToSeek bytes to be.. table then CBR Constant Bit Rate Since the bit rate is constant we can skip necessary number of bytes to a given time Bitrate timeToSeek bytes to be skipped VBR Variable Bit rate The bit rate is not constant it keeps varying. So in this case.. is constant we can skip necessary number of bytes to a given time Bitrate timeToSeek bytes to be skipped VBR Variable Bit rate The bit rate is not constant it keeps varying. So in this case the find out the average bitrate of the file and then..
Eclipse, adb, and ddms not detecting Android Emulator http://stackoverflow.com/questions/8469723/eclipse-adb-and-ddms-not-detecting-android-emulator the directions from the android website installed the sdk the java sdk and eclipse. My computer is Windows 7 64 Bit but I have the 32 bit Java SDK and Eclipse installed since hearing that there are issues with the 64 bit versions. I am..
Full-width Spinner in ActionBar http://stackoverflow.com/questions/8941098/full-width-spinner-in-actionbar or hankystyles' when using a custom view android android layout android actionbar share improve this question Bit annoying that I've just done it but here is a method of doing it using the built in Spinner in the action bar. All you need..
http://stackoverflow.com/questions/9272232/fft-library-in-android-sdk 2 Math.PI i n sin i Math.sin 2 Math.PI i n public void fft double x double y int i j k n1 n2 a double c s t1 t2 Bit reverse j 0 n2 n 2 for i 1 i n 1 i n1 n2 while j n1 j j n1 n1 n1 2 j j n1 if i j t1 x i x i x j x j t1 t1 y i y..
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