android 4.1 从图库进入相机后按back键无法退出camera

文件photopage.java

1.       请作如下修改：

  函数 public void onSingleTapUp(int x, int y)

         } else if (launchCamera) {

          //  launchCamera();           //注释

            onPictureCenter(true);    //添加

        }

 

 

2. 变量申明：

    private boolean mCanSlideToPrePicture = true;

 

3.  public void onLoadingFinished(boolean loadingFailed)

     函数最后添加：

 

                   //M: it has camera screenNail, we will finish the photopage if

                    // delete all image.

                    if(mMediaSet.getMediaItemCount() <= 1 && mAppBridge == null &&

                            mHasCameraScreennailOrPlaceholder){

                        mActivity.getStateManager().finishState(PhotoPage.this);

                    }

 

4.    private void launchCamera()

       函数最后添加：

        //M: it doesn't allowed slide to previous picture

        //after launch camera

        mCanSlideToPrePicture = false;

 

5.  protected void onResume()

    函数开始添加：

 mCanSlideToPrePicture = true;

 

6.  文件添加函数： 

    //M:

    public boolean canSlideToPrePicture() {

        return mCanSlideToPrePicture;

    }

 

文件Gallery2/src/com/android/gallery3d/ui/PhotoView.java

 

1. public interface Listener {

    接口增加函数：

  public boolean canSlideToPrePicture();

 

2.private boolean slideToPrevPicture()

  前面添加:

  if(!mListener.canSlideToPrePicture()) return false;