# use focus of Camera

# play sound on shutter

mobile/com.sap.sailing.racecommittee.app/src/com/sap/sailing/racecommittee/app/ui/views/CameraView.java

@@ -4,44 +4,58 @@ import java.io.IOException;
 
 import android.content.Context;
 import android.hardware.Camera;
+import android.hardware.Camera.AutoFocusCallback;
 import android.hardware.Camera.PictureCallback;
+import android.hardware.Camera.ShutterCallback;
+import android.media.AudioManager;
 import android.util.Log;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
 
 public class CameraView extends SurfaceView implements SurfaceHolder.Callback {
     private static final String TAG = "CameraPreview";
-    
+
     private SurfaceHolder surfaceHolder;
     private Camera camera;
+    private AudioManager audioManager;
 
     public CameraView(Context context) {
         super(context);
+        
+        audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
 
         // Install a SurfaceHolder.Callback so we get notified when the
         // underlying surface is created and destroyed.
         surfaceHolder = getHolder();
         surfaceHolder.addCallback(this);
-        // deprecated setting, but required on Android versions prior to 3.0
         surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
     }
 
     public void snap(final PictureCallback pictureHandler) {
-        camera.takePicture(null, null, new PictureCallback() {
-            
+        camera.autoFocus(new AutoFocusCallback() {
             @Override
-            public void onPictureTaken(byte[] data, Camera camera) {
-                pictureHandler.onPictureTaken(data, camera);
-                camera.startPreview();
+            public void onAutoFocus(boolean success, Camera camera) {
+                if (success) {
+                    camera.takePicture(shutterSoundCallback, null, new PictureCallback() {
+                        @Override
+                        public void onPictureTaken(byte[] data, Camera camera) {
+                            pictureHandler.onPictureTaken(data, camera);
+                            camera.startPreview();
+                        }
+                    });
+                } else {
+                    audioManager.playSoundEffect(AudioManager.FX_KEYPRESS_DELETE);
+                }
             }
         });
     }
 
     public void setCamera(Camera newCamera) {
         camera = newCamera;
-        if (camera == null)  {
+        if (camera == null) {
             return;
         }
+        
         try {
             camera.setPreviewDisplay(surfaceHolder);
             requestLayout();
@@ -50,7 +64,7 @@ public class CameraView extends SurfaceView implements SurfaceHolder.Callback {
             Log.d(TAG, "Error setting camera preview: " + e.getMessage());
         }
     }
-    
+
     @Override
     public void surfaceCreated(SurfaceHolder holder) {
         // The Surface has been created, acquire the camera and tell it where
@@ -63,7 +77,7 @@ public class CameraView extends SurfaceView implements SurfaceHolder.Callback {
             Log.e(TAG, "IOException caused by setPreviewDisplay()", exception);
         }
     }
-    
+
     @Override
     public void surfaceDestroyed(SurfaceHolder holder) {
         // Surface will be destroyed when we return, so stop the preview.
@@ -71,22 +85,22 @@ public class CameraView extends SurfaceView implements SurfaceHolder.Callback {
             camera.stopPreview();
         }
     }
-    
+
     @Override
     public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
         // If your preview can change or rotate, take care of those events here.
         // Make sure to stop the preview before resizing or reformatting it.
 
-        if (surfaceHolder.getSurface() == null){
-          // preview surface does not exist
-          return;
+        if (surfaceHolder.getSurface() == null) {
+            // preview surface does not exist
+            return;
         }
 
         // stop preview before making changes
         try {
             camera.stopPreview();
-        } catch (Exception e){
-          // ignore: tried to stop a non-existent preview
+        } catch (Exception e) {
+            // ignore: tried to stop a non-existent preview
         }
 
         // set preview size and make any resize, rotate or
@@ -96,8 +110,15 @@ public class CameraView extends SurfaceView implements SurfaceHolder.Callback {
         try {
             camera.setPreviewDisplay(surfaceHolder);
             camera.startPreview();
-        } catch (Exception e){
+        } catch (Exception e) {
             Log.d(TAG, "Error starting camera preview: " + e.getMessage());
         }
     }
+    
+    private ShutterCallback shutterSoundCallback = new ShutterCallback() {
+        @Override
+        public void onShutter() {
+            audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT);
+        }
+    };
 }