Added simple command line sample for Android

android/apps/HelloAndroid/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED( VERSION 2.8 )
+
+IF( NOT PROJECT_NAME )
+  IF ( NOT "x$ENV{PROJECT_NAME}" STREQUAL "x" )
+    SET( PROJECT_NAME $ENV{PROJECT_NAME} )
+  ELSE()
+    SET( PROJECT_NAME HelloAndroid )
+  ENDIF()
+ENDIF()
+SET( PROJECT_NAME ${PROJECT_NAME} CACHE STRING "The name of your project")
+
+PROJECT( ${PROJECT_NAME} )
+
+#########################################################
+# Find OpenCV
+#########################################################
+
+SET( OpenCV_DIR ${CMAKE_SOURCE_DIR}/../../build CACHE PATH "The path where you built opencv for android" )
+FIND_PACKAGE( OpenCV REQUIRED )
+
+#########################################################
+# c/c++ flags, includes and lib dependencies
+#########################################################
+
+#notice the "recycling" of CMAKE_C_FLAGS
+#this is necessary to pick up android flags
+SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -pedantic" )
+SET( CMAKE_CPP_FLAGS "${CMAKE_CPP_FLAGS} -Wall -pedantic" )
+
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
+
+SET( LIBRARY_DEPS ${OpenCV_LIBS} )
+IF( ANDROID )
+  SET( LIBRARY_DEPS ${LIBRARY_DEPS} log dl )
+ENDIF()
+
+#########################################################
+# source files
+#########################################################
+
+FILE( GLOB hdrs "*.h*" )
+FILE( GLOB srcs "*.cpp" )
+
+ADD_EXECUTABLE( ${PROJECT_NAME} ${srcs} )
+TARGET_LINK_LIBRARIES( ${PROJECT_NAME} ${LIBRARY_DEPS} )

android/apps/HelloAndroid/cmake_android.cmd

+@ECHO OFF
+SETLOCAL
+PUSHD %~dp0
+SET PROJECT_NAME=HelloAndroid
+CALL ..\..\scripts\build.cmd %*
+POPD
+ENDLOCAL
\ No newline at end of file

android/apps/HelloAndroid/cmake_android.sh

+#!/bin/sh
+cd `dirname $0`
+
+BUILD_DIR=build_armeabi
+opencv_android=`pwd`/../..
+opencv_build_dir=$opencv_android/$BUILD_DIR
+
+mkdir -p $BUILD_DIR
+cd $BUILD_DIR
+
+cmake -DOpenCV_DIR=$opencv_build_dir -DARM_TARGET=armeabi -DCMAKE_TOOLCHAIN_FILE=$opencv_android/android.toolchain.cmake ..
+

android/apps/HelloAndroid/main.cpp

+#include <opencv2/core/core.hpp>
+#include <opencv2/highgui/highgui.hpp>
+
+using namespace cv;
+const char* message = "Hello Android!";
+
+int main(int argc, char* argv[])
+{
+  // print message to console
+  printf("%s\n", message);
+  
+  // put message to simple image
+  Size textsize = getTextSize(message, CV_FONT_HERSHEY_COMPLEX, 3, 5, 0);
+  Mat img(textsize.height + 20, textsize.width + 20, CV_32FC1, Scalar(230,230,230));
+  putText(img, message, Point(10, img.rows - 10), CV_FONT_HERSHEY_COMPLEX, 3, Scalar(0, 0, 0), 5);
+
+  // save\show resulting image
+#if ANDROID
+  imwrite("/mnt/sdcard/HelloAndroid.png", img);
+#else
+  imshow("test", img);
+  waitKey();
+#endif
+  return 0;
+}
+

android/apps/HelloAndroid/run.cmd

+:: this batch file copies compiled executable to the device,
+:: runs it and gets resulting image back to the host
+::
+:: Here is sample output of successful run:
+::
+:: 204 KB/s (2887388 bytes in 13.790s)
+:: Hello Android!
+:: 304 KB/s (8723 bytes in 0.028s)
+
+@ECHO OFF
+
+:: enable command extensions
+VERIFY BADVALUE 2>NUL
+SETLOCAL ENABLEEXTENSIONS || (ECHO Unable to enable command extensions. & EXIT \B)
+
+PUSHD %~dp0
+SET PROJECT_NAME=HelloAndroid
+
+:: try to load config file
+SET CFG_PATH=..\..\scripts\wincfg.cmd
+IF EXIST %CFG_PATH% CALL %CFG_PATH%
+
+:: check if sdk path defined
+IF NOT DEFINED ANDROID_SDK (ECHO. & ECHO You should set an environment variable ANDROID_SDK to the full path to your copy of Android SDK & GOTO end)
+(PUSHD "%ANDROID_SDK%" 2>NUL && POPD) || (ECHO. & ECHO Directory "%ANDROID_SDK%" specified by ANDROID_SDK variable does not exist & GOTO end)
+SET adb=%ANDROID_SDK%\platform-tools\adb.exe
+
+:: copy file to device (usually takes 10 seconds or more)
+%adb% push .\bin\armeabi\%PROJECT_NAME% /data/bin/sample/%PROJECT_NAME% || GOTO end
+
+:: set execute permission
+%adb% shell chmod 777 /data/bin/sample/%PROJECT_NAME% || GOTO end
+
+:: execute our application
+%adb% shell /data/bin/sample/%PROJECT_NAME% || GOTO end
+
+:: get image result from device
+%adb% pull /mnt/sdcard/HelloAndroid.png || GOTO end
+
+GOTO end
+
+:: cleanup (comment out GOTO above to enable cleanup)
+%adb% shell rm /data/bin/sample/%PROJECT_NAME%
+%adb% shell rm /mnt/sdcard/HelloAndroid.png
+
+:end
+POPD
+ENDLOCAL
\ No newline at end of file

android/apps/HelloAndroid/run.sh

+#!/bin/sh
+cd `dirname $0`
+PROJECT_NAME=HelloAndroid
+
+# copy file to device (usually takes 10 seconds or more)
+adb push ./bin/armeabi/$PROJECT_NAME /data/bin/sample/$PROJECT_NAME || return
+
+# set execute permission
+adb shell chmod 777 /data/bin/sample/$PROJECT_NAME || return
+
+# execute our application
+adb shell /data/bin/sample/$PROJECT_NAME || return
+
+# get image result from device
+adb pull /mnt/sdcard/HelloAndroid.png || return
\ No newline at end of file