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Alexander Smorkalov 2012-11-12 18:01:56 +04:00
parent 7ef378b230
commit 6fb959710d
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doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.rst
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@ -260,34 +260,35 @@ To build your own Android application, which uses OpenCV from native part, the f
#. Either use :ref:`manual <NDK_build_cli>` ``ndk-build`` invocation or :ref:`setup Eclipse CDT Builder <CDT_Builder>` to build native JNI lib before Java part [re]build and APK creation. #. Either use :ref:`manual <NDK_build_cli>` ``ndk-build`` invocation or :ref:`setup Eclipse CDT Builder <CDT_Builder>` to build native JNI lib before Java part [re]build and APK creation.
Hello OpenCV Sample "Hello OpenCV" Sample
=================== =====================
Here are basic steps to guide you trough the process of creating a simple OpenCV-centric application. Here are basic steps to guide you trough the creation process of a simple OpenCV-centric application.
It will be capable of accessing camera output, processing it and displaying the result. It will be capable of accessing camera output, processing it and displaying the result.
#. Open Eclipse IDE, create a new clean workspace, create a new Android project (*File -> New -> Android Project*). #. Open Eclipse IDE, create a new clean workspace, create a new Android project (:guilabel:`File -> New -> Android Project`).
#. Set name, target, package and minSDKVersion accordingly. #. Set name, target, package and ``minSDKVersion`` accordingly.
#. Add the following permissions to the AndroidManifest.xml file: #. Add the following permissions to the ``AndroidManifest.xml`` file:
.. code-block:: xml .. code-block:: xml
:linenos: :linenos:
</application> <uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.CAMERA" /> <uses-feature android:name="android.hardware.camera" android:required="false"/>
<uses-feature android:name="android.hardware.camera" /> <uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
<uses-feature android:name="android.hardware.camera.autofocus" /> <uses-feature android:name="android.hardware.camera.front" android:required="false"/>
<uses-feature android:name="android.hardware.camera.front.autofocus" android:required="false"/>
#. Reference OpenCV library within your project properties. #. Reference the OpenCV library within your project properties.
.. image:: images/dev_OCV_reference.png .. image:: images/dev_OCV_reference.png
:alt: Reference OpenCV library. :alt: Reference OpenCV library.
:align: center :align: center
#. Create new view layout for your application, lets name it hello_opencv.xml, and add the following to it: #. Create new view layout for your application, lets name it ``hello_opencv.xml``, and add the following to it:
.. code-block:: xml .. code-block:: xml
:linenos: :linenos:
@ -307,70 +308,71 @@ It will be capable of accessing camera output, processing it and displaying the
#. Remove default auto generated layout, if exists. #. Remove default auto generated layout, if exists.
#. Create a new *Activity* (*New -> Other -> Android -> Android Activity*) and name it, for example: *HelloOpenCVActivity*. Add *CvCameraViewListener* interface to *implementes* section of *HelloOpenCVActivity* class. Add the following code to activity implementation: #. Create a new ``Activity`` (:guilabel:`New -> Other -> Android -> Android Activity`) and name it, for example: ``HelloOpenCVActivity``.
Add ``CvCameraViewListener`` interface to ``implements`` list of ``HelloOpenCVActivity`` class. Add the following code to activity implementation:
.. code-block:: java .. code-block:: java
:linenos: :linenos:
public class Sample1Java extends Activity implements CvCameraViewListener { public class Sample1Java extends Activity implements CvCameraViewListener {
private CameraBridgeViewBase mOpenCvCameraView;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) { private CameraBridgeViewBase mOpenCvCameraView;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS: {
Log.i(TAG, "OpenCV loaded successfully");
mOpenCvCameraView.enableView();
} break;
default:
super.onManagerConnected(status);
}
}
};
/** Called when the activity is first created. */
@Override @Override
public void onManagerConnected(int status) { public void onCreate(Bundle savedInstanceState) {
switch (status) { Log.i(TAG, "called onCreate");
case LoaderCallbackInterface.SUCCESS: { super.onCreate(savedInstanceState);
Log.i(TAG, "OpenCV loaded successfully"); requestWindowFeature(Window.FEATURE_NO_TITLE);
mOpenCvCameraView.enableView(); getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
} break; setContentView(R.layout.hello_opencv);
default: mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.java_surface_view);
super.onManagerConnected(status); mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
} mOpenCvCameraView.setCvCameraViewListener(this);
} }
};
/** Called when the activity is first created. */ @Override
@Override public void onPause()
public void onCreate(Bundle savedInstanceState) { {
Log.i(TAG, "called onCreate"); if (mOpenCvCameraView != null)
super.onCreate(savedInstanceState); mOpenCvCameraView.disableView();
requestWindowFeature(Window.FEATURE_NO_TITLE); super.onPause();
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); }
setContentView(R.layout.hello_opencv);
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.java_surface_view);
mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
mOpenCvCameraView.setCvCameraViewListener(this);
}
@Override @Override
public void onPause() public void onResume()
{ {
if (mOpenCvCameraView != null) super.onResume();
mOpenCvCameraView.disableView(); OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
super.onPause(); }
}
@Override public void onDestroy() {
public void onResume() super.onDestroy();
{ if (mOpenCvCameraView != null)
super.onResume(); mOpenCvCameraView.disableView();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback); }
}
public void onDestroy() { public void onCameraViewStarted(int width, int height) {
super.onDestroy(); }
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public void onCameraViewStarted(int width, int height) { public void onCameraViewStopped() {
} }
public void onCameraViewStopped() { public Mat onCameraFrame(Mat inputFrame) {
return inputFrame;
}
} }
public Mat onCameraFrame(Mat inputFrame) {
return inputFrame;
}
}