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2014/10/16 ¤W¤È 08:25:32
android Programming Glossary: systemQuitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon the application Answer Romain Guy The user doesn't the system handles this automatically. That's what the activity lifecycle.. exiting the application That is a mistake on any operating system. For all you know the reason your application is being exited..
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 this question Note that memory usage on modern operating systems like Linux is an extremely complicated and difficult to understand.. is mostly there to help an application gauge how close the system is coming to having no more memory for background processes.. in part to avoid one app from being able to stress the system to this point. Going lower level you can use the Debug API to..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog to download files easily and delegate the hard work to the system. First let's see a utility method @param context used to check..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables and it provides much more flexibility to the Android system as well by minimizing the lifetime of associated data. 2 The.. do not provide as strong a contract with the Android system as using an Application subclass and further that using Singletons..
http://stackoverflow.com/questions/1784786/mathml-and-java Symbolic Calculator for Mobile Devices Java Algebra System The Apache Commons Mathematics Library Calculator projects for..
How to get an Android WakeLock to work? http://stackoverflow.com/questions/2039555/how-to-get-an-android-wakelock-to-work In OnCreate I've got PowerManager pm PowerManager getSystemService Context.POWER_SERVICE mWakeLock pm.newWakeLock PowerManager.SCREEN_DIM_WAKE_LOCK.. the WakeLock Manually. This code will allow the Android System to handle the Lock Automatically. When your application is in.. in the Foreground then WakeLock is held and else android System releases the Lock automatically. Try this and post your comment.....
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 DEBUG ZeeTest 8619 Listening... 04 19 22 27 05.538 WARN System.err 8619 java.io.IOException Software caused connection abort.. Software caused connection abort 04 19 22 27 05.600 WARN System.err 8619 at android.bluetooth.BluetoothSocket.readNative Native.. Native Method ... 04 19 22 27 05.717 WARN System.err 8619 java.io.IOException Software caused connection abort..
Why are these permissions being refused? http://stackoverflow.com/questions/3476600/why-are-these-permissions-being-refused permissions are separated to four groups Regular Dangerous System or Signed Signed Permissions in the first two groups can be..
How to compile Android Application with system permissions http://stackoverflow.com/questions/3598662/how-to-compile-android-application-with-system-permissions found how to sign my application with system platform key. System signatures are located in directory root of android source tree..
Adding a library/JAR to an Eclipse Android project http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project project. Right click libs and choose Import General File System then Next Browse in the filesystem to find the library's parent..
Upgraded to SDK 2.3 - now no emulators have connectivity http://stackoverflow.com/questions/4376553/upgraded-to-sdk-2-3-now-no-emulators-have-connectivity that I think might be relevant 12 07 12 05 42.048 ERROR System 61 Failure starting core service 12 07 12 05 42.048 ERROR System.. 61 Failure starting core service 12 07 12 05 42.048 ERROR System 61 java.lang.SecurityException 12 07 12 05 42.048 ERROR System.. 61 java.lang.SecurityException 12 07 12 05 42.048 ERROR System 61 at android.os.BinderProxy.transact Native Method 12 07 12..
Android SDK installation doesn't find JDK http://stackoverflow.com/questions/4382178/android-sdk-installation-doesnt-find-jdk I'm trying to install the Android SDK on my Windows 7 x64 System. jdk 6u23 windows x64.exe is installed but the Android SDK setup..
http://stackoverflow.com/questions/4725773/ffmpeg-on-android ffmpeg android port libffmpeg using the Android Build System . Simply place the sources under external and make away. You'll..
http://stackoverflow.com/questions/5109988/is-there-a-way-to-hide-the-system-bar-in-android-3-0-its-an-internal-device-an In Android 3.0 Honeycomb the navigation buttons System Bar is always present I'd like to hide it. Is it possible FYI..
Java 7 language features with Android http://stackoverflow.com/questions/7153989/java-7-language-features-with-android but without .isAlphabetic and .isIdeographic System .lineSeparator undocumented java.lang.reflect.Modifier .classModifiers..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation I was looking into implementing an Inertial Navigation System for an Android phone which I realise is hard given the accelerometer..
How to call a local web service from an Android mobile application http://stackoverflow.com/questions/7860887/how-to-call-a-local-web-service-from-an-android-mobile-application Log.d Authenticaion resultstring System.out.println resultstring catch SocketException ex Log.e Error.. return resultstring my web service code using System using System.Collections using System.ComponentModel using System.Data.. resultstring my web service code using System using System.Collections using System.ComponentModel using System.Data using..
NoClassDefFoundError when GoogleAnalyticsTracker.getInstance() http://stackoverflow.com/questions/9857539/noclassdeffounderror-when-googleanalyticstracker-getinstance follow this step in right click on libs folder import File System browse to select your jar file and hit finish and run you project...
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon to kill it If no such option exists how does the user terminate the application Answer Romain Guy The user doesn't the system handles this automatically. That's what the activity lifecycle especially onPause onStop onDestroy is for. No matter what.. time manually. For example we want to check updates when exiting the application That is a mistake on any operating system. For all you know the reason your application is being exited is because the OS is shutting down and then your update process..
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 too. java android memory memory management share improve this question Note that memory usage on modern operating systems like Linux is an extremely complicated and difficult to understand area. In fact the chances of you actually correctly.. highest level API for looking at overall memory usage. This is mostly there to help an application gauge how close the system is coming to having no more memory for background processes thus needing to start killing needed processes like services... this should be of little use since the Java heap limit is there in part to avoid one app from being able to stress the system to this point. Going lower level you can use the Debug API to get raw kernel level information about memory usage http developer.android.com..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog brought a new feature DownloadManager which allows you to download files easily and delegate the hard work to the system. First let's see a utility method @param context used to check the device version and DownloadManager information @return..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables exactly the type of contract the Android API should be offering and it provides much more flexibility to the Android system as well by minimizing the lifetime of associated data. 2 The Application class provides the application developer with a.. or are not a legitimate alternative. I am arguing that Singletons do not provide as strong a contract with the Android system as using an Application subclass and further that using Singletons generally points to extremely inflexible design which..
http://stackoverflow.com/questions/1784786/mathml-and-java or as general Java math libraries Mathrider Yacas for Java Jasymca Symbolic Calculator for Mobile Devices Java Algebra System The Apache Commons Mathematics Library Calculator projects for Android scientific calculator for android Apache license..
How to get an Android WakeLock to work? http://stackoverflow.com/questions/2039555/how-to-get-an-android-wakelock-to-work WakeLock to work My WakeLock isn't keeping my device awake. In OnCreate I've got PowerManager pm PowerManager getSystemService Context.POWER_SERVICE mWakeLock pm.newWakeLock PowerManager.SCREEN_DIM_WAKE_LOCK PowerManager.ON_AFTER_RELEASE My.. .addFlags LayoutParams.FLAG_KEEP_SCREEN_ON You need not relase the WakeLock Manually. This code will allow the Android System to handle the Lock Automatically. When your application is in the Foreground then WakeLock is held and else android System..
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 22 27 04.905 DEBUG ZeeTest 8619 Connected 04 19 22 27 04.905 DEBUG ZeeTest 8619 Listening... 04 19 22 27 05.538 WARN System.err 8619 java.io.IOException Software caused connection abort 04 19 22 27 05.600 WARN System.err 8619 at android.bluetooth.BluetoothSocket.readNative.. 04 19 22 27 05.538 WARN System.err 8619 java.io.IOException Software caused connection abort 04 19 22 27 05.600 WARN System.err 8619 at android.bluetooth.BluetoothSocket.readNative Native Method ... 04 19 22 27 05.717 WARN System.err 8619 java.io.IOException.. 05.600 WARN System.err 8619 at android.bluetooth.BluetoothSocket.readNative Native Method ... 04 19 22 27 05.717 WARN System.err 8619 java.io.IOException Software caused connection abort 04 19 22 27 05.717 WARN System.err 8619 at android.bluetooth.BluetoothSocket.readNative..
Why are these permissions being refused? http://stackoverflow.com/questions/3476600/why-are-these-permissions-being-refused android permissions share improve this question Android permissions are separated to four groups Regular Dangerous System or Signed Signed Permissions in the first two groups can be granted to any application. The last two can be obtained only..
How to compile Android Application with system permissions http://stackoverflow.com/questions/3598662/how-to-compile-android-application-with-system-permissions share improve this question After having some search I found how to sign my application with system platform key. System signatures are located in directory root of android source tree build target product security . You can use them to sign..
Adding a library/JAR to an Eclipse Android project http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project system. Create a new folder libs in your Eclipse Android project. Right click libs and choose Import General File System then Next Browse in the filesystem to find the library's parent directory i.e. where you downloaded it to . Click OK then..
Upgraded to SDK 2.3 - now no emulators have connectivity http://stackoverflow.com/questions/4376553/upgraded-to-sdk-2-3-now-no-emulators-have-connectivity filter out all but errors is very long but I'm posting those that I think might be relevant 12 07 12 05 42.048 ERROR System 61 Failure starting core service 12 07 12 05 42.048 ERROR System 61 java.lang.SecurityException 12 07 12 05 42.048 ERROR.. I think might be relevant 12 07 12 05 42.048 ERROR System 61 Failure starting core service 12 07 12 05 42.048 ERROR System 61 java.lang.SecurityException 12 07 12 05 42.048 ERROR System 61 at android.os.BinderProxy.transact Native Method 12 07.. Failure starting core service 12 07 12 05 42.048 ERROR System 61 java.lang.SecurityException 12 07 12 05 42.048 ERROR System 61 at android.os.BinderProxy.transact Native Method 12 07 12 05 42.048 ERROR System 61 at android.os.ServiceManagerProxy.addService..
Android SDK installation doesn't find JDK http://stackoverflow.com/questions/4382178/android-sdk-installation-doesnt-find-jdk SDK installation doesn't find JDK I'm trying to install the Android SDK on my Windows 7 x64 System. jdk 6u23 windows x64.exe is installed but the Android SDK setup refuses to proceed because it doesn't find the JDK installation...
http://stackoverflow.com/questions/4725773/ffmpeg-on-android of ffmpeg for Android. This was achieved by building olvaffe's ffmpeg android port libffmpeg using the Android Build System . Simply place the sources under external and make away. You'll need to extract bionic libc and zlib libz from the Android..
http://stackoverflow.com/questions/5109988/is-there-a-way-to-hide-the-system-bar-in-android-3-0-its-an-internal-device-an launcher application that way there's no way to exit the application. In Android 3.0 Honeycomb the navigation buttons System Bar is always present I'd like to hide it. Is it possible FYI I am not publishing this application on the Android Market...
Java 7 language features with Android http://stackoverflow.com/questions/7153989/java-7-language-features-with-android .isSurrogate .getName .highSurrogate .lowSurrogate .isBmpCodePoint but without .isAlphabetic and .isIdeographic System .lineSeparator undocumented java.lang.reflect.Modifier .classModifiers .constructorModifiers .fieldModifiers .interfaceModifiers..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation accelerometer accuracy Inertial navigation I was looking into implementing an Inertial Navigation System for an Android phone which I realise is hard given the accelerometer accuracy and constant fluctuation of readings. To start..
How to call a local web service from an Android mobile application http://stackoverflow.com/questions/7860887/how-to-call-a-local-web-service-from-an-android-mobile-application SOAP_ACTION soapenvelope resultstring SoapPrimitive soapenvelope.getResponse Log.d Authenticaion resultstring System.out.println resultstring catch SocketException ex Log.e Error Error on soapPrimitiveData ex.getMessage ex.printStackTrace.. e Log.e Error Error on soapPrimitiveData e.getMessage e.printStackTrace return resultstring my web service code using System using System.Collections using System.ComponentModel using System.Data using System.Linq using System.Web using System.Web.Services.. Error on soapPrimitiveData e.getMessage e.printStackTrace return resultstring my web service code using System using System.Collections using System.ComponentModel using System.Data using System.Linq using System.Web using System.Web.Services using..
NoClassDefFoundError when GoogleAnalyticsTracker.getInstance() http://stackoverflow.com/questions/9857539/noclassdeffounderror-when-googleanalyticstracker-getinstance click on your project create a folder with name libs and follow this step in right click on libs folder import File System browse to select your jar file and hit finish and run you project. after that right click on the project Built Path java..
Android, build openssl-fips-2.0 http://stackoverflow.com/questions/11091905/android-build-openssl-fips-2-0 arm linux androideabi 4.4.3 prebuilt linux x86 bin PATH export MACHINE armv7l export RELEASE 2.6.32.GMU export SYSTEM android export ARCH arm export CROSS_COMPILE arm linux androideabi export ANDROID_DEV ANDROID_NDK platforms android 14 arch..
How to generate Image Histogram in Android? http://stackoverflow.com/questions/17740059/how-to-generate-image-histogram-in-android is an object of ClsDraw custom class of UIView and this call drws graph from the points of arrAllPoints THE COORDINATE SYSTEM OF IOS IS TOTALLY OPPOSITE TO THAT OF THE MAC'S SO ROTATED IT WITH REFERENCE TO X axis. blueGraphView.layer.transform CATransform3DMakeRotation..
http://stackoverflow.com/questions/2598248/how-to-serialize-a-bundle the state I want to save in onSaveInstanceState. But android only keeps this Bundle when the activity is killed by the SYSTEM. When the user kills the activity I need to store it myself. Hence i'd like to serialize and store it to file. Of course..
Detect application heap size in Android http://stackoverflow.com/questions/2630158/detect-application-heap-size-in-android under CyanogenMod settings Performance VM heap size . NOTE BE AWARE THAT SETTING THIS VALUE MANUALLY CAN MESS UP YOUR SYSTEM ESPECIALLY if you select a smaller value than is normal for your device. Here are my test results showing the values returned..
AccountManager without a SyncAdapter? http://stackoverflow.com/questions/3085242/accountmanager-without-a-syncadapter handler thread android.server.ServerThread ex iting due to uncaught exception E AndroidRuntime 8108 EXCEPTION IN SYSTEM PROCESS. System will crash. E AndroidRuntime 8108 java.lang.NullPointerException E AndroidRuntime 8108 at com.android.settings.ManageAccountsSettings.o..
Troubles installing programmatically an app with INSTALL_PACKAGES permission from /system/app http://stackoverflow.com/questions/8130677/troubles-installing-programmatically-an-app-with-install-packages-permission-fro 13 thread exiting with uncaught exception group 0x40018560 11 15 19 43 58.965 E AndroidRuntime 1838 FATAL EXCEPTION IN SYSTEM PROCESS PackageManager 11 15 19 43 58.965 E AndroidRuntime 1838 java.lang.NullPointerException 11 15 19 43 58.965 E AndroidRuntime..
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