Native C++ "Hello World" working in emulator

[revan]

Android OS Tips

* to start emulator
./emulator -console

* to xfer a file to emulator; this is stored in emulator's userdata.img file
adb push <file> <dst file>

* to copy a file or a directory recursively to emulator
adb push <source> <destination>

* to copy a file or a directory recursively from emulator
adb pull <source> <destination>

* emulator can run native ARM Linux code.
build your apps using GNU/ARM Linux toolchain and then run in emulator.

* to get a shell on the emulator
adb shell

* to run a console app on Android emulator
adb shell <Linux command>

* to connect to emulator console for specific commands
telnet localhost 5554/6/8


Building and Running a native C++ App on the Android Emulator

References

Native C "Hello World" working in emulator
http://groups.google.com/group/andro...f09cb4dd9687cc

Native C Applications for Android
http://benno.id.au/blog/2007/11/13/android-native-apps

Steps:
* download and install GNU/ARM Linux tool chain
http://www.codesourcery.com/gnu_tool.../download.html

* create C/C++ code. see below for sample code.

* build app without dynamic libraries using GNU/ARM Linux toolchain
ex. arm-none-linux-gnueabi-g++.exe -static -o hello HelloAndroid.cpp

* start emulator in Windows by double clicking on $SDK_ROOT/tools/emulator.exe

* in a Windows Command window, use "adb" to xfer executable to emulator disk
adb push hello /system/sbin/hello

* make your app executable; do not use chmod ugo+x
adb shell chmod 777 /system/sbin/hello

* run your app in a console on the emulator
adb shell
cd /system/sbin/
hello

EXAMPLE C++ CODE:

//
// HelloAndroid.cpp
//
//

#include <iostream>
using std::cin;
using std::cout;
using std::endl;

class ReVan
{
  public:
    void getname( void );
    void sayhello( void );

  private:
    char name[ 255 ];
**;

void ReVan::getname( void )
{
  cout << "What is your name? ";
  cin >> name;
**

void ReVan::sayhello( void )
{
  cout << "Welcome " << name << " to the world of Android" << endl;
**

ReVan name;

int main( int argc, char *argv[] )
{
  name.getname();
  name.sayhello();
  return 0;
**

[Kyle Matthews]

Source: anddev.org.

[arunkumarrr]

Keep up the good work..