Android :: Java Vs Native Thread?
May 8, 2010Does anyone know how Java thread relates to Android native thread? Does it map one to one?
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Android :: Set And Get Thread Priority From Java And Native Layers?
May 10, 2010I have a multithreaded streaming app which has mainly the following 5 threads. 1 Main App(UI) Thread 1 controller thread (in native) 1 audio decoder thread (in native) 1 video decoder thread(in native) 1 thread to query the head position of audio (in Java) Apart from this I have video rendering with OpenGL. My problem is, if I query the thread priority using the Thread.getPriority method (my native threads make callbacks to Java and I am making the query at that point of time), I am getting the priority of each of them as 5. For my audio query thread (the last one in the list) I am explicitly setting the priority using Process.setThreadPriority(Process.THREAD_PRIORITY_URGENT_AUDIO); Also for my decoder threads, I am giving higher priority than my controller thread(using pthread APIs in native). But still finally all of them seem to have same priority. Also what should I be doing to increase the priority of my threads(both from Java and native)?
View 6 Replies View RelatedAndroid : Java - Implement A Run Method Of Thread If Create A Thread Global
Sep 7, 2010How can I implement a run() method of thread if I create a Thread Global?
I mean If I create a Thread Globally then can I implement its run() method {" public void run()"} anywhere in my Application?
In the run() method I have to write the code to perform some action.
IF I can do it then please can anyone show me briefly how to do it particularly.
Android :: Start Native Application From Java
Apr 23, 2009I have a native application that I would like to start from a Java interface. Does anyone know of a good way of doing this? can start the application using adb, with no problems. I can also start the application using Runtime.exec(), but that doesn't work so well for me; I need the application to run outside of a Java Runtime Process. Any ideas?
View 2 Replies View RelatedAndroid :: Debugging Integrated Java And Native Code
Feb 7, 2009I am trying to figure out what is the best way to debug a mix of Java and native code? Please notice, that I am NOT trying to develop a native app. The app will be written entirely in Java, using Android SDK. However, I noticed that some pieces of the SDK use native methods (e.g. AssetManager, WebKit, etc). I wonder which tools Google developers use if/when they need to debug a mix of Java and C/C++ code? Eclipse/gdb or there are commercial tools which make the debugging experience less painful?
View 2 Replies View RelatedAndroid :: Java Application / Native Library Integration
Apr 8, 2009I have developed bluetooth application where native library will be initiated by Java application (using JNI wrapper). JNI will call the entry function of the native library and then it will create Pthread to for scanning the device. Once Scanning is over, i will get the callback which i registered during the entry function of the native lib (called by app). But i haven't received the callback, but if i run the same native library in the shell (executable from the shell terminal) it is working fine. Can any one help me, if there is any specific architecture needs to follow while developing Java application based on native lib?
View 4 Replies View RelatedAndroid :: Running Native Executable From Java Application
Nov 5, 2009I am trying to run a native executable from inside an android java application. The native executable exists in my assets. At start of activity, I copy it from assets to my application cache Dir. then I use Process Builder to run it.I tried to run "chmod 777" on the file and on cache directory containing it and I ensured permissions are granted using adb shell. but I still get this permission exception.
View 4 Replies View RelatedAndroid : Access To Native Screen Buffer From Java
Jul 29, 2010Is it possible, from within my android java app, to capture an image of what is on the screen, even if it was written using native (ndk)? I do not wish to take screen shots of other apps, just my own. I can already capture and image of a canvas that I am aware of, but is there a view or canvas or something like it that always represents what is on the screen, so that a) I don't have to capture the separate views images and recompile them, and b) I can see what my native (jni) code is doing with the graphics too?
View 1 Replies View RelatedAndroid :: Can A Native Application Use Java Methods In Telephony Manager?
Sep 17, 2009I am currently working on porting a application written in C in android platform. I need to know that can i invoke/call the getSystemService from the C application using invocation interface by JNI. Meaning using a .java file which will interact with the interace provided by the android.telephony.TelephonyManager.java for using getCallState() and other mehthods.
View 2 Replies View RelatedAndroid :: Java Thread Message Passing
Jun 16, 2010I'm writing an Android app. I have a main method, which creates and runs a new Thread using an anonymous inner Runnable class. The run() method, when it's done, calls a method on it's parent class (in the main thread) that calls notifyDataSetChanged() so that the main thread can redraw the new data. This is causing all kinds of trouble (ViewRoot$CalledFromWrongThreadException). The thing is, this method being called from the worker thread is on the class that's created in the UI thread. Shouldn't that be running on the UI thread? Or am I missing something.
View 1 Replies View RelatedAndroid : Dump All Thread Stacks / Can Do This From Within Java Code?
Aug 4, 2010We have a service that seem to get deadlocked very occasionally in the field. It's not possible to hook up to a debugger. We can detect the deadlock situation programmatically. Is it possible to do this from within Java code?
if (ohIamDeadlocked()) { Thread.something.dumpStacksOfAllThreads(); }
If this is not possible, is there an adb command that could do it? I tried "adb dumpsys" but it doesn't print any stack information.
Android :: Does Java Function Call Spawns New Thread For Execution?
Jun 24, 2010Suppose i have one simple function in my program. Whenever i call that function does a new thread or process is spawned to execute the function or it is executed under the main thread memory space only.
View 4 Replies View RelatedAndroid :: Thread Class In SDK LunarLander And JetBoy Examples Not Each In Separate Java File / Why Is So?
Sep 9, 2010Is there a reason why the Thread class in the SDK LunarLander and JetBoy examples are not each in a separate java file, rather than being inside the View file?
It would make things a bit clearer, IMHO. Am I missing something?
Android :: Native Android Application Java Front End
Jun 25, 2010I am trying to produce a java front end, via some sort of Android "view" that will allow me to show the console output from a native C/C++ application binary. I followed the steps from various google searches and I have a tool chain that produces native binarys that I can then "adb push" onto the android device. I can either use the adb shell or a console application like ConnectBot to native to the pushed path and run the binary like so: ./someApplicationHowever as I stated in my opening sentence I would like to wrap this binary with a font end producing an apk that can be loaded onto the phone and when it runs it opens up and directs the stdio output from the native binary to the screen.
View 1 Replies View RelatedAndroid :: NDK OpenGL - Mixing Java And Native - C - Calls To OpenGL API
Jul 24, 2010I would like to be able to use the OpenGL API from both Java and C (via NDK).
In Java, there is a GL object passed, which has all GL methods on it.
In C, you just talk to the native library.
In a single onDrawFrame callback (for which Java is passed a GL), can I use methods on the GL object, and also call NDK methods which access the openGL library?
In other words, is the GL object just a wrapper for the same instance of the native library?
Android :: Restart A Thread In Java - Android From A Button
Sep 29, 2010I have a thread in java/Android like this:
CODE:................
The thread works fine when I run my application. But I want to start/restart the thread with a button.
CODE:.........
If I copy the thread into the button I just make a new thread every time the user clicks on the button. I want to run the thread when the user first time click on the button, "kill it" and start from the beginning if the user click on the button a second time.
Android : Handle Messages Between The Main Thread(the Deafult UI Related Thread) And The User Created Gamethread
May 21, 2009I am writing an application in which i need to handle messages between the main thread(the deafult UI related thread) and the user created Gamethread.
The requirement is like this.
An activity(say "Activity_X") is setting the view by "setContentView(some "View_Y")". In "Activity_X" i have implemeted "onCreateOptionsMenu()" and "onOptionsItemSelected()" fucntions for creating menus & a switch case for action to be taken on selecting those menus.Menu has items like "resume/pause/zoom/" .
All action to be take on selecting these menus are implemented in "View_Y" in a separate Gamethread by extending "Thread" class.
So whenever a menu is selected in "Activity_X" i need to send a message to "View_Y". And on receiving this ,a particular action/method should be called in View_Y(GameThread).
How can i achieve this using Handlers?Is there any other way of doing this? Please do share with me some code snippets for these.
Android :: Update ListView In Main Thread From Another Thread
May 27, 2010I have a separate thread running to get data from the internet. After that, I would like to update the ListView in the main thread by calling adapter.notifyDataSetChanged(). But it does not work. Any workaround for that?
View 1 Replies View RelatedAndroid :: Use Thread With SurfaceView - Ie Draw In Separate Thread?
Jul 22, 2009I want to do the drawing in another thread to speed up the game(it is way to slow right now). I was told to do this but don't quite understand why that would speed things up. Is it GameView that should implement Runnable? Should I make the thread sleep when not drawing? where should I start the thread? package com.android.WWS;
import android.app.Activity; import android.content.Context; import android.graphics.*; import android.os.Bundle; import android.view.SurfaceView; import android.view.KeyEvent; import android.view.View; import android.view.View.OnKeyListener; import java.lang.Runnable; import java.lang.Thread;...................
Android :: Suspend / Resume Thread From Another Thread In Same App
Feb 20, 2009I need to suspend/resume a thread from another thread in the same process. I tried to look into thread apis,but I couldn't figured out a way to achieve this.Can anyone pls point me some references to look or give a tip to do this.
View 2 Replies View RelatedHTC Droid Eris :: Remove Certain Texts From Thread In Easily Instead Of Whole Thread?
Dec 28, 2009Does anyone know how to delete certain texts from a thread in an easy manner instead of having to delete a whole thread??
View 7 Replies View RelatedAndroid :: Main Thread The Same As UI Thread?
Jul 16, 2010The Android doc says "Like activities and the other components, services run in the main thread of the application process." Is the main thread here the same thing as UI thread?
View 3 Replies View RelatedAndroid :: Call Java File On Click In Another Java Class?
May 19, 2010i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
Android : Can Not Call A Java Method Using Add Java Script Interface()
Mar 16, 2009I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
View 2 Replies View RelatedAndroid :: Java.io / Java.Lang Different From Packages In Windows?
Aug 8, 2009Java packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
View 2 Replies View RelatedHTC Incredible :: Root Notification Thread (Root Achieved And Thread Open)
Jun 3, 2010Status: ROOT ,,Root Notification Thread (Root Achieved and thread open)
View 49 Replies View RelatedAndroid :: Java Compatibility With GetFields Method In Android Java.lang.Class
Feb 11, 2009I'm having some problems porting a Java application to work in Android platform. I detected an incompatibility problem between java sun and Adroid sdk in java.lang.Class. I oberved that: public Field[] getFields() Returns an array containing Field objects describing all fields which are defined. That's array is sorted as attributes are declared in the main Class in sun jdk. For example, next Class is defined as: public class Example { public boolean stop; public int atr1; public String name; ....
}
Android :: Android / Java - Call Function In Separate *.java File?
Aug 16, 2010I do an import of the full package name / java file, and if I do a <classname>.<method>, SOMETIMES I can get it to access - other times I get a lot of can't use a static in a non static bunch of talk. I'll admit I'm new to Java, so what do I need to do? Call a class instance first, then call my methods? I'm rather confused by this, as I want to put all of my 'functions' into a FunctionsList.java file, and all of my main Activity (UI) into a MyActivity.java file.
For example:
<MyActivity.java>
import com.example.FunctionsList;
private class MyActivity extends Activity {
FunctionsList.function();
}
9/10 times I get that static/non-static error. If I put all of my functions into MyActivity.java, I have zero problems!
Android :: Call Java Methods From One Java Class To Another In Android?
Nov 3, 2010i hav two classes...both classes are extends activity.. i need call other class method on main class on android development..its urgent..please.. i done something like subclass sub = new subclass()...its not work..
package org.me.intent_testing;
import android.app.Activity;
import android.os.Bundle;
import android.widget.;
import android.view.;
import android.content.Intent;...........
Using Java 6 Instead Of Java 7 - Installing ADT Plugin?
Feb 5, 2014I am trying to install the ADT Plugin. It is not working.
Tried:
This is after Hello->Install New Software
Name: ADT Plugin
Location: https:[code]....
How do I install ADT Plugin?I am using Java 6 instead of Java 7 per recommendation of posts elsewhere. It didn't work.