Skip to content

O
opencv
Commit 6fb95971 authored by Alexander Smorkalov's avatar Alexander Smorkalov
Browse files
Options

Code review comments applied.

parent 7ef378b2
Hide whitespace changes
Inline Side-by-side
Showing with 68 additions and 66 deletions
doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.rst
View file @ 6fb95971
......@@ -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.
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.
#. 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
:linenos:
</application>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-feature android:name="android.hardware.camera" android:required="false"/>
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
<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
:alt: Reference OpenCV library.
: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
: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.
#. 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
:linenos:
public class Sample1Java extends Activity implements CvCameraViewListener {
private CameraBridgeViewBase mOpenCvCameraView;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
public class Sample1Java extends Activity implements CvCameraViewListener {
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
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS: {
Log.i(TAG, "OpenCV loaded successfully");
mOpenCvCameraView.enableView();
} break;
default:
super.onManagerConnected(status);
}
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "called onCreate");
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
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);
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "called onCreate");
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
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
public void onPause()
{
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
super.onPause();
}
@Override
public void onPause()
{
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
super.onPause();
}
@Override
public void onResume()
{
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}
@Override
public void onResume()
{
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}
public void onDestroy() {
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public void onDestroy() {
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public void onCameraViewStarted(int width, int height) {
}
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;
}
}
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment