Android :: Access To Databases From Native Code - For Example Mmssms.db

Aug 9, 2010

Try to select (or update) from custom databases (for example mmssms.db) but on init I see " Unable to open the database file". Try send permissions in manifest <uses-permission android:name="android.permission.WRITE_SMS"/> <uses-permission android:name="android.permission.READ_SMS"/> but this doesn't help.

Android :: Access to databases from native code - for example mmssms.db


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Android : How To Access A File (say .xml) From A Native Code?

Sep 16, 2010

I am trying out an example of OpenCV from http://github.com/billmccord/OpenCV-Android and am stuck at the point where it is mentioned "Before attempting to run the VideoEmulator application, you must first copy this XML file into the emulator in the following location: /data/data/org.siprop.opencv/files/haarcascade_frontalface_alt.xml " Where in my eclipse workspace do I need to place this haar xml file to be copied to the location /data/data/org.siprop.opencv/files/ of the emulator?

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Android :: Access APIs Android View Surface.cpp From My Native Code

Oct 5, 2010

I am working on video renderer application which need surface and control of surface. And through isurface i can register heap buffer to that surface and post buffer operation. I have gone through android_view_surface.cpp file. It is having all required APIs which are helpful for my application. But i don't know how can i implement it. What are the procedures to get access of those APIs.

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Android :: Way To Have Root Access To Some Of Databases?

Jun 3, 2010

I believe the Java API does not give full access to the SMS database and other databases. Is there any way to have root access to some of those databases such as SMS and phone settings so that I can fetch some information out of it?

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Android :: ADB Access To Application Databases Without Root

Jan 16, 2010

Can anyone tell me, is it possible to use the ADB to pull and push a database from an app, without root privileges on the phone? For example, I know the location on my rooted magic and dream is:
/data/data/com.xxxx.xxxx/databases/xxxx

I know that you can use ADB without root, but when trying to use the shell - you can't view that location without root privaliges. But I have been told you can use push and pull if you know the file you want? Basically I want to pull a database from MY app on a non rooted phone modify it and push it back on. Only trouble I have is, the two phones I have are both root and I don't have access to a non root one to try it out.

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Android : Access Contents Of Droid Emulator Databases?

Dec 26, 2009

I've read the answer to a question as to how to access the contents of the databases, however I cannot seem to get it to work on my machine. Here is the shell log:

C:android-sdk-windows ools>adb -s emulator-5554 shell
# sqlite3 /data/data/com.android.demo.notepad2/databases/notes
sqlite3 /data/data/com.android.demo.notepad2/databases/notes
SQLite version 3.5.9
Enter ".help" for instructions
sqlite> .tables
.tables
sqlite> ^C
C:android-sdk-windows ools>

SQLite simply echos my commands back to me, even although the Eclipse file browser tells me it exists. If I use the sqlite3 tool and use ".tables" the commands are accepted.

Is the SQLite syntax different through the emulator is am I missing something?

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Android : Where I Can Access Databases In Eclipse For Droid Development?

Jun 24, 2010

I apologize if this is a stupid question, nevertheless I need to ask. I am new to Android development and have gone through every single tutorial and reference provided. I have been doing great, with the exception of one stupid problem; I cannot find where the databases for some apps are stored.

For example I would like to build my own app that includes thousands of pre-made records from an established SQLite Database. As a reference I tried to use the "Searchable Dictionary" app from the provided programs in the Android SDK, but cannot find it.

I read that all databases are stored in /data/data//databases on the device, but I cannot find this location. So how would I access the database in Eclipse or anywhere else for that matter to set up my pre-configured database?

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Android :: Using Sqlite In Native Code

Nov 22, 2010

I have a library written in C which implements some complicated algorithm over two databases and as a result produce new one. I am trying to import it in android using android-ndk. What is the correct wat to use sqlite in you native libraries, i was able to build the sqlite manually using the ndk but when i use it gives some strange errors when trying to fetch rows from db which is on phone storate - after i fetch some data i got SQL:database not opened. how can use sqlite in native code on android.

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Android :: Can Use TraceView In Native Code When Using NDK

Dec 10, 2009

We know that it's very convenient to use TraceView in Android java code to check the runtime of different chunks of code. Now I develop my app with NDK and I want to check the runtime of some native functions, but I found nothing in TraceView guide if it's possible to use this tool. Because I noticed that one of my native methods spent too much time and I want to dig out the more detailed root cause. Is there anybody know if we can use TraceView in native code?

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Android :: Using Surface In The Native Code

Feb 3, 2010

I am planning to write a video player application and I am planning to use the gstreamer on the native side. I am trying to use the SurfaceFlinger for the rendering part. For this I have written a test program to experiment on the rendering part. I am using the surface flinger wrapper from the project

http://gitorious.org/rowboat/external-gst-plugins-android

But the following ERROR occurs when we try to run the .apk.

CODE:.......

The I changed the permission for "android.permission.ACCESS_SURFACE_FLINGER" in frameworks/base/core/ res/AndroidManifest.xml to "dangerous" and recompiled. But got the same error.

Then I commented out the "checkCallingPermission" method in IServiceManager.cpp and recompiled. Then also i got the same error.

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Android :: Getting Sensor Information From Native Code - C Or C++

Oct 12, 2010

Is this possible to access a sensor data form native code without using Java at all? I need to access to the sensor as fast as possible, but it seems like the "DELAY_FASTEST" parameter when registering an event change is not fast enough.

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Android :: How To Debug Native Code In Eclipse

Jun 18, 2010

I created one android application it is using one native method. I created shared library using ndk tools.My jni function is having some problems i want to debug it. How to debug it in eclipse tool

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Android :: Using SKIA Canvas In Native Code

Oct 4, 2009

I set out to use SkCanvas and other native SKIA classes but I could not find any sample code. After a week's of search and diving deep into Android source, I got it working. Below in my blog, I have detailed, how to use SimpleJNI native sample, to get native canvas going. If you find it useful or I did something wrong let me know http://matthiyosi.blogspot.com/2009/10/using-skia-in-android-native-c...

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Android :: Debugging Native Code (C++) Using Gdb With Eclipse / Is It Possible?

May 24, 2010

I have some piece of code which uses JNI. I can debug code wrote in Java directly in Eclipse (using ADT). I even have a script, which help me debug native code with gdb. However this is not very comfortable way for doing this.Is it possible to configure Eclipse to use gdb (I guess gdbserver) for debbuging android native applications? Do you know where I could find any description of this?

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Android :: Can Native Only Code Run As Standalone Application

Nov 8, 2010

We want to migrate a huge complex native program to Android system ,running it as a background service accepting command sent from Java Program using JNI along with IPC. However, the Android NDK state following words:

Please note that the NDK does not enable you to develop native-only applications. Android's primary runtime remains the Dalvik virtual machine.

Does that mean we have no way to run an standalone native-only application on Android as a background service? The native code can only exist in the form of library that will be loaded to the virtual machine through JNI?

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Android :: Porting JMF / Native Source Code

Jan 22, 2009

I am creating an Android application which uses the JMF (SIP, RTP, JAIN). So i downloaded the JMF source code for some adhoc change to my application.The basic questions 1. How will it behave the "native files - C/C++/header" in JMF source files(downloaded)? because android is based on java right now. 2. Is there any complete different way to porting/doing the SIP, RTP working in android?Is there any link from sun.com(this) site for JMF source code?Any suggestion and comment about this?

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Android :: How To Add Includes In Native C Code That Will Be Compiled By Ndk

Aug 23, 2010

How I can add headers to my native c file.

So here's the details.

I was able to setup my android project to call a native function from a .so file. And actually I need to add box2d to my project, but I when I include the header files, it won't make. So basically my problem is how do I tell the make file to include a whole folder with header and cpp files.

I tried adding the path directly to the include statement just for the sake of testing it. The error goes away, but new errors come out.

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Android :: How To Broadcast Intent From Native Code

Nov 2, 2010

Is it possible to broadcast an Intent from native code? If so, is there documentation and/or sample code pertaining to the relevant APIs?

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Android :: Access In Native Libraries?

Apr 12, 2010

I am completely new to the NDK.

I have done a couple of the tutorials including the hello from jni one and another one that calculates the sum of two numbers.

They involved using cygwin and the ndk to create the library so file and I have a bit of a grasp on how to insert my own libraries into the libraries layer of Android.

I have now been asked to access the native libraries on Android and see what I can use them for.

My question is can I do this?

The STABLE-APIS.txt document is a bit vague and mentions the following as Stable C++ API's in Android 1.5

cstddef

new

utility

stl_pair.h

Does that mean I can access them?

If so then how do I go about it?

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Android : Ndk To Access Native Bluetooth Lib?

May 1, 2010

Looking for any pointer or advise using NDK to access to native bluetooth lib. is it doable? anyone have good or bad experience to share?

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Android :: Print Backtrace When Debug Native Code

Nov 23, 2010

When I debug android app, if I work with Java, I can use Log.d("TAG", "xxxx", new Throwable()) to print backtrace of Java code. This is really handy for me to find bugs. But when I work with native library (e.g. libwebcore.so), there seems no way to print backtrace in runtime. The only way to debug native code is use gdbserver.

I have a question: Is there any way to print backtrace in C/C++?

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Android :: App Closes Automatically - Native Code Crash

Jul 12, 2010

I've a very simple / minimal code application.

I'm drawing some lines on screen with my finger.

At some point, app closes itself / exists automatically.

No exception is thrown.

CODE:......................

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Android :: Debugging Integrated Java And Native Code

Feb 7, 2009

I 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?

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Android :: How To Play Synthesized Sounds? (Native Code)

Oct 9, 2010

I wrote an iPhone app some time ago that creates sound programatically. It uses an AudioQueue to generate sound. With the AudioQueue, I can register for a callback whenever the system needs sound, and respond by filling a buffer with raw audio data. The buffers are small, so the sound can respond to user inputs with reasonably low latency.

I'd like to do a similar app on Android, but I'm not sure how. The MediaPlayer and SoundPool classes seems to be for playing canned media from files, which is not what I need. The JetPlayer appears to be some sort of MIDI playback engine. Is there an equivalent to AudioQueue in the Android Java API? Do I have to use native code to accomplish what I want?

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Android :: Way To View Phone Native Code Profiling?

Mar 29, 2010

I started my emulator with ./emulator -trace profile -avd emulator_15. I then tracked down the trace files to ~/.android/avd/rodgers_emulator_15.avd/traces/profile, where there are six files: qtrace.bb, qtrace.exc, qtrace.insn, qtrace.method, qtrace.pid, qtrace.static. I can't figure out what to do with these files. I've tried both dmtracedump and traceview on all of the files, but none seem to generate any output I can do anything with.

How can I view the proportion of time taken by native method calls on Android?

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Android :: Did Support Make A Dial In Native Code

Jul 28, 2009

I'm try to make a dial in native code, could i make a dial with RIL through socket or IPC communication?or push AT command directly to GSM Modem.

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Android : Access Droid's Native Resources?

Jul 11, 2009

Could someone please tell me how to access android's native resources? In particular, I would like to use the camera icon and shutter sound in my own app.

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Android :: Native Code Called Successfully But Not Executed Properly

Sep 10, 2009

In Android , Native code is written as follows.
JNIEXPORT void JNICALL Java_com_android_Test_show(JNIEnv *env, jobject obj) {
printf("THIS IS TEST");
}

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Android :: Internal Compiler Error When Compiling Native Code

Aug 9, 2010

Currently I am trying to compile native code for Android. The code is from the OpenCV port for Android. I pasted all the code correctly in my project and edited my make files accordingly. When I set android:debuggable to false everything works fine and I get my native library. When I try while android:debuggable is set to true I get an error.

Here is a part of the log:

CODE:....................

From what I have found on the internet this is caused by the optimization level of the compilation. As long as the code isn't compiled so that is is debuggable afterwards everything should be fine.

Now apparently it is possible to avoid this by setting APP-OPTIM := release in the Application.mk or adding -O2 to LOCAL_CFLAGS. I have tried both and still I get this error.

Right now I don't really care that much about debugging my native code, but I would like to have basic debugging enabled. And I don't want to keep switching android:debuggable in my manifest every time I want to compile. I'm not even sure if it is okay at all if I just set android:debuggable to false pre compiling and to true post compiling, but I am sure I will forget it every second run.

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Android :: Access And Update Contacts In Native Libraries

Jul 1, 2010

Is there any way to access the contact DB in my native libraries(C/C+ +)? Also to update the contact database through native libraries itself.

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