Several fixes android related fixes

Native activity build warning fixed;
Logcat messages for JavaCameraView updated (Bug #2876);
Some fixes for feature #2893 done.

cmake/OpenCVDetectAndroidSDK.cmake

@@ -278,6 +278,7 @@ macro(add_android_project target path)
         if (NATIVE_APP_GLUE)
           include_directories(${ANDROID_NDK}/sources/android/native_app_glue)
           list(APPEND android_proj_jni_files ${ANDROID_NDK}/sources/android/native_app_glue/android_native_app_glue.c)
+          ocv_warnings_disable(CMAKE_C_FLAGS -Wstrict-prototypes -Wunused-parameter -Wmissing-prototypes)
           set(android_proj_NATIVE_DEPS ${android_proj_NATIVE_DEPS} android)
         endif()
 

modules/java/generator/src/java/android+CameraBridgeViewBase.java

@@ -54,6 +54,9 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
     public CameraBridgeViewBase(Context context, int cameraId) {
         super(context);
         mCameraIndex = cameraId;
+        getHolder().addCallback(this);
+        mMaxWidth = MAX_UNSPECIFIED;
+        mMaxHeight = MAX_UNSPECIFIED;
     }
 
     public CameraBridgeViewBase(Context context, AttributeSet attrs) {

modules/java/generator/src/java/android+JavaCameraView.java

@@ -60,7 +60,6 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
 
     public JavaCameraView(Context context, AttributeSet attrs) {
         super(context, attrs);
-        Log.d(TAG, "Java camera view ctor");
     }
 
     protected boolean initializeCamera(int width, int height) {
@@ -237,10 +236,8 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
     }
 
     public void onPreviewFrame(byte[] frame, Camera arg1) {
-        Log.i(TAG, "Preview Frame received. Need to create MAT and deliver it to clients");
-        Log.i(TAG, "Frame size  is " + frame.length);
-        synchronized (this)
-        {
+        Log.d(TAG, "Preview Frame received. Frame size: " + frame.length);
+        synchronized (this) {
             mFrameChain[1 - mChainIdx].put(0, 0, frame);
             this.notify();
         }
@@ -248,8 +245,7 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
             mCamera.addCallbackBuffer(mBuffer);
     }
 
-    private class JavaCameraFrame implements CvCameraViewFrame
-    {
+    private class JavaCameraFrame implements CvCameraViewFrame {
         public Mat gray() {
             return mYuvFrameData.submat(0, mHeight, 0, mWidth);
         }