Activate AutoFocus modified

java/src/org/linphone/mediastream/video/capture/AndroidVideoApi5JniWrapper.java

@@ -78,8 +78,8 @@ public class AndroidVideoApi5JniWrapper {
 	static public void activateAutoFocus(Object cam) {
 		Log.d("mediastreamer", "Turning on autofocus on camera " + cam);
 		Camera camera = (Camera) cam;
-		if (camera.getParameters().getFocusMode() == Parameters.FOCUS_MODE_AUTO || camera.getParameters().getFocusMode() == Parameters.FOCUS_MODE_MACRO)
-			camera.autoFocus(null);
+		if (camera != null && (camera.getParameters().getFocusMode() == Parameters.FOCUS_MODE_AUTO || camera.getParameters().getFocusMode() == Parameters.FOCUS_MODE_MACRO))
+			camera.autoFocus(null); // We don't need to do anything after the focus finished, so we don't need a callback
 	}
 	
 	public static Object startRecording(int cameraId, int width, int height, int fps, int rotation, final long nativePtr) {
@@ -93,8 +93,8 @@ public class AndroidVideoApi5JniWrapper {
 				// forward image data to JNI
 				putImage(nativePtr, data);
 			}
-		});
-		 
+		});		
+		
 		camera.startPreview();
 		Log.d("mediastreamer", "Returning camera object: " + camera);
 		return camera;