Android : Some Tutorials About Operations On Droid Emulator?

Mar 6, 2010

Can any body give me some tutorials about operations on the android emulator ?

Android : Some tutorials about operations on droid emulator?

Android :: File Operations Extremely Slow On Emulator - Totally Stuck

Jul 19, 2010

I am finding that file operations are extremely slow on emulator. The same operation which takes less than a few seconds in a real device, takes minutes on an emulator. I am using a ubuntu linux machine with 2.4Ghz CPU, 2 GB Ram. I would really appreciate any help in resolving this. I am totally stuck due to this.

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Android :: Composite Operations In Droid Canvas?

Mar 31, 2010

I'm just starting with Android development and I'm coming from JavaScript/HTML world so I'm currently investigating the possibilities of the Android SDK.

The HTML 5 canvas supports composite operations (See here).

Is this possible in an Android Canvas? I scanned the API of the Canvas class but couldn't find anything useful. I need at least the composite operation "source-in" or (if this isn't possible) "source-atop".

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Android :: Low Level Operations With SD Card On Droid?

Nov 13, 2010

Is it possible to have low level access in Android with Java/NDK to create for example card scanner like scandisk or card defragmenter? I move a lots of stuff around my card and it gets fragmented quickly. I have experience with FAT32 defragmenting on Windows, but I'dliek to do this on Android.

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Android :: Need Droid Apps That Alter Normal Phone Operations

Feb 19, 2010

So i was wondering if its possible to for an application that i would write to be constantly running in the background and alter regular phone operations. For example this could be something like as soon as you receive a text from anyone you forward it automatically to another number. Is something like this at all possible? Just to be clear I don't want to solve that particular problem through some other means, just want to know if apps can accomplish that. Also if that is possible is it possible for an app that i write to alter more immediate and instant things, like an incoming call.

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Android :: Droid Eclipse Resource Strings Error / Alter XML File (like Suggested In Tutorials)?

Sep 6, 2010

When I make a new android project and I go to res/values/string.xml I get a screen to add android resources instead of a XML document. I keeps getting the error about : java.lang.NullPointerException.

Is there a way to just alter a XML file (like suggested in tutorials)?

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Motorola Droid X :: Tutorials On How To Use Bootstrap / Clockwork Recovery / ROM Manager?

Sep 1, 2010

I'm not really sure how to go about using these now to create a backup and recovery for my phone in case anything ever happens. I have downloaded Droid X bootstrap and ROM Manager so far not really sure where to download Clockwork (if this is even a different app than what I have).Does a tutorial on how to use these things exist anywhere? I did a search on this forum, but it seems like everything is for moderately experienced users.

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Android :: Do Network Operations In Appwidget?

Aug 22, 2010

I'm developing a Android AppWidget for my application. For updating my appwidget I need to download data from network. But when I try to do that in onUpdate method, my appWidget is killed by Android system. I learnt that time consuming operations can't be done in receivers so I launched a service from onUpdate method and launched a thread from that. But still the problem persists.
Can anyone please let me know how to do network operations in Appwidget?

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Android :: Handling Expensive Operations In UI Thread

Sep 16, 2009

OK I'm reading this page:

The code is as in the example (see below). In my application, the worker thread has done loading of large bitmaps, and I need to notify the UI thread the filename of the bitmap that was loaded as they get loaded. How can I notify the UI thread of the filename of the bitmap just loaded? I can see anyway to for updateResultsInUi() to be able to take a parameter from the example below.

public class MyActivity extends Activity {
[ . . . ]
// Need handler for callbacks to the UI thread final Handler mHandler = new Handler();
// Create runnable for posting final Runnable mUpdateResults = new Runnable() { public void run() { updateResultsInUi();
} };
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
[ . . . ]
} protected void startLongRunningOperation() {
// Fire off a thread to do some work that we shouldn't do directly in the UI thread
Thread t = new Thread() { public void run() {
mResults = doSomethingExpensive();;
} };
} private void updateResultsInUi() {
// Back in the UI thread -- update our UI elements based on the data in mResults
[ . . . ]

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Android :: Stop Threads With Long Operations?

Aug 28, 2009

Android experts, I have a tricky question that I would like some advice on. code...

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Android :: JUnit Testing Database Operations?

Oct 18, 2010

I'm developing an Android application with database storage.

I want to test some classes that I use to access database.

I've found ActivityInstrumentationTestCase2 to test Activities but I haven't found anything to test classes.

How can I do that? I haven't used jUnit before.

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Android :: Avoiding Float Operations In Game Design

Jun 8, 2010

I've read this in a few articles, that one should avoid floating point operations within the physics update of a game.

But how do you really achieve this? Surely all half decent games are going to involve this kind of maths?

Does it mean, convert all your variables to int, or use double instead, or simply just cut it out as much as possible?

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General :: Galaxy S4 Android 4.4 / Program Crashes Operations

Nov 27, 2013

I've downloaded the android 4.4, but when i'm going to settings, security, the program crash the operations.


I want to mark the option install apps out of play store.

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Android :: OpenGL ES Tutorials ?

Jun 30, 2010

As I am one who cannot find any decent Android-based OpenGL ES references, I have decided to start one. You can check it out at As I am not a seasoned GL programmer, any and all comments and/or questions are greatly appreciated!

My mission is to first create an OpenGL version of an application on Mac OS X, and then port to Android. Once the port is done, I go through each program, step-by-step, and contrast and compare how the port was done. I also explicitly point out any and all differences between the two, subtle or obvious.

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Android :: Design Application With Multiples Activities And Operations Running In Background?

Nov 22, 2010

I am designing an app that will have some activities separated in tabs. Some of them will have to perform tasks in the background will the user is in another tab. What is the best strategy for designing an app like this? I was thinking about using a service but it can be killed by android dalvik, isnt it?

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Android :: Need Tutorials / Books About OpenGL ES 2.0

Nov 17, 2010

Do you know a good tutorial about OpenGL ES 2.0? I'm going to use it with Android and C++.

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Android :: Steps To Follow Or Tutorials?

May 13, 2010

i can implement the QSB on my app using onSearchRequested() method.i have 4 column in my table. when i was type in the QSB. it will give some suggestions on the Suggestion window. how to do that? searchable dictionary example shows the dictionary provider class to retrive the suggestions. but on that no data inserted. then how they getting the suggestions. can you explain me what are the steps we have to follow or tutorials, sample codes are most thankful.

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Android :: Need Any Tutorials On Populating MapOverlay

Aug 19, 2010

Does anyone know of any tutorials on populating a Mapview using an overlay at a specific point? e.g adding a marker at a specific lat / lng on your mapview?

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Fake Permissions And Unauthorized Operations?

Apr 11, 2014

I do a lot of Android app testing. I use my regular phone, where I have my contacts and my regular gmail account. I never used a credit card on this account. I mostly use APK files to install the apps. I have 2 questions:

1. can an app display some permissions when installing, but have others hidden permissions ?

Example: instal APK file > says permissions "Network access" and that's it.

Can this app also read my data or make phone calls, even though those permissions were not displayed ?

What is I use an app to display ALL permissions ? Can it really display all or is there an way to still have hidden permissions ? I use Android 2.3.7 root and 4.1 no root.

2. Can an app make unauthorized hidden operations, like place phone calls or send texts or steal my gmail password ?

Like I said, I never used a credit card, so at least that's not a problem. But I have my SIM card - can an app place a value added call or SMS (I don't know the exact English term - expensive call), without me knowing about it ?

Or compromise my Gmail account ? I have an alternate email for recovery.

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General :: How To Get Tab Back To Normal Operations

Nov 1, 2013

How to get my tab back to normal operations.After changing fonts it req for restarting and it's just hanging at booting process. Try to recover but it doesn't work. Then i try to use install 86vebc ROM by using CWM v6.0.2.8 and now it's keep on entering CWM again and again even after rebooting.I only able to give the specification as below because i couldn't find the exactly brand or model for my tab.

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Android :: Which Development Blog Has Most Walkthroughs And Tutorials?

Jun 2, 2009

I need to work on my Android development skills. Which blog has the freshest and most walkthroughs, code samples, and tutorials?

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Motorola :: Suggest Android Paid Tutorials?

Nov 17, 2010

I am a newbie in android world so i am ready to spend some time watching android tutorial videos and reading some books. I am ready to spend some amount on android paid tutorials also if they are worth a look. Please suggest me some study material along with some android paid tutorials, i want the best tutorial since i have many apps in mind to develop :) I have had a look at all the free tutorials and i know how to do some simple stuff like calling an intent, making the layout file, media controller. But i dont have knowledge about the major issues like database connectivity, flinge, adapters, geolocation and stuff. Hence the bottom line.

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Android :: Tutorials On Creating Menus For Apps?

Apr 7, 2010

I need a very simple menu which probably contains only one or two items: settings/options, where pressing one of them should show some customer defined parameters (is it called dialog), e.g., number of results shown. Is there any good tutorial on creating such kind of menus? I've looked at the "notepad" example in android, it doesn't really help.

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Android :: Http-cleint Tutorials From

Apr 30, 2010

I was trying http-cleint tutorials from While running the application I am getting the following error in console.


I have added android.permission.INTERNET in AndroidManifest.xml.


The java code in is as follows


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Android :: OpenGL-ES Games - Tutorials And Libraries?

Oct 27, 2009

What tutorials and libraries are available which can help beginners to develop 2D and 3D games on Android using OpenGL-ES? I'm looking for tutorials which can help me learn OpenGL-ES, and I'm looking for OpenGL-ES libraries which can make life easier for beginners in OpenGL-ES.

Since Android is still small, I guess it may be help-full to read iPhone OpenGL-ES tutorials as well, as I suppose the OpenGL-ES functionality is much the same.

I have found the following useful information which I would have liked to share:

Android tutorials: DroidNova: Basic tutorial covering polygons, no textures anddev forum with some tutorials

Other Android OpenGL-ES information: Google IO lecture regarding games, not much OpenGLES The The Khronos Reference Manual is also relevant to have, but its not exactly the best place to start.

iPhone OpenGL-ES tutorials (where the OpenGl-ES information is probably useful):


As for libraries which a beginner might use to get a simpler hands-on experience with OpenGL-ES, I have only found Rokon, which is recently started, thus has many holes and bugs. And it's gnuGPL licensed (at the moment) which means it cannot be used, if we wish to sell our games.

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Android :: Why Doesnt Code From SDK Tutorials Work Out Of The Box

Oct 6, 2010

I follow the instructions exactly on this page (and some of the other tutorials) but they always seem to be missing some key information as they dont work out of the box

I added a bunch of packages that seemed like were missing, but now I'm stuck.

Description Resource Path Location Type Conversion to Dalvik format failed with error 1 HelloGrid Unknown Android Packaging Problem

And a whole bunch of these for each of the drawable.sample_* references

Description Resource Path Location Type R.drawable.sample_0 cannot be resolved /HelloGrid/src/com/example/ImageAdapter line 51 Java Problem


As you can see I have all the images loaded in the /drawable directory

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Android :: Learning Recommendations? Classroom? Tutorials?

Apr 4, 2010

Does anyone have any recommendations for a class (online) or tutorial that teaches android programing for dummies? It's frustrating knowing exactly what you want to do and no idea how to do it. Something that uses basic language and explains each line in detail to help a person remember how to do it later. Any suggestions would be great.

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Samsung Behold 2 :: Want Tutorials For Making Android Apps?

Mar 21, 2010

Does anyone know some places that have some good books or video tutorials or just generally good knowledge of creating android apps? If someone can hook me up with some info on at least what I need to know to create android apps that would be very appreciated.

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Android :: Compile Error In New Hello Testing Tutorials Program

Sep 19, 2010

There is compile error in HelloAndroidTest program in the Tutorials Hello Testing program, because I got this compile error. can not be resolved.


My com.example.helloandroid.R doesnt have, and class does not have field. Where do I support to get this field,

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Android :: Tutorials To Swipe Gesture For Number Input?

Nov 12, 2010

If (in Android) you wanted to write an alarm app where the user entered in the time for the alarm by swiping the hours & minutes up and down, what's the easiest way of achieving this? Is it the Swipe or Fling command?

Are there any good tutorials out there for this?

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