smile4ever4u/imagebrowse

ImageBrowseFragment like WeChat moments image transition on Lollipop..

ImageBrowse fragment can use to browse image with transition animation

The same as the latest android WeChat moments image browse effect

FINAL EFFECT

Feature: Big improvement

Add thumbnail support when full image is not cache just like WeChat does.

New add padding and margin support in ImageBrowseFragment

1.original view: just like normal imageView but with zoom effect
2.detail view:
① single click back to pre layout with shrink effect
② double click to zoom effect(*2.5)
③ more gesture see details code
3.if u have more than one imageview can display with ViewPager
random click original imageview,and scroll ViewPager to any position,
than u press back key,or single click detail,u will see original view's
position is the same as ViewPager‘s current position.

4.load image from remote u can't click item until it finished

5.ViewPager has rebound effect when edge of ViewPager is available..

#USAGE for fragment

1.Handle init PhotoView(also available xml)

    PhotoView p = new PhotoView(MainActivity.this);
    p.setLayoutParams(new AbsListView.LayoutParams((int) (getResources().getDisplayMetrics().density * 100), (int) (getResources().getDisplayMetrics().density * 100)));
    p.setScaleType(ImageView.ScaleType.CENTER_CROP);
    p.setEnabled(false);//u can't click view until image load completed
    ...//load image and put it into PhotoView
    p.disenable(false);//disable touch

2.Handle PhotoView Click

    //view is PhotoView normally,when load image from remote,you need call view.enable() to
    //let PhotoView can't be clicked util it load completed
    if(view.isEnabled()) { 
    Bundle bundle = new Bundle();
    bundle.putStringArrayList("imgs", imgList);//all PhotoView url(remote)
    bundle.putParcelable("info", ((PhotoView) view).getInfo());//click PhotoView ImageInfo
    bundle.putInt("position", position);//click position
    imgImageInfos.clear();
    //NOTE:if imgList.size >= the visible count in single screen,i will cause NullPointException
    //because item out of screen have been replaced/reused
    for (int i = 0; i < imgList.size(); i++) {
        imgImageInfos.add(((PhotoView) parent.getChildAt(i)).getInfo());//remember all PhotoView ImageInfo
    }
    bundle.putParcelableArrayList("infos", imgImageInfos);
    //attach fragment to Window
    getSupportFragmentManager().beginTransaction().replace(Window.ID_ANDROID_CONTENT, ImageBrowseFragment.getInstance(bundle), "ViewPagerFragment")
                                .addToBackStack(null).commit();
    }

More detail please see demo code.

#USEAGE for Dialog fragment

handle where you click

    root.post(new Runnable() { // in case root view not inflate complete
                         @Override
                         public void run() {
                             Bundle bundle = new Bundle();
                             bundle.putStringArrayList(ImageInfo.INTENT_IMAGE_URLS, imgList);
                             final ImageInfo preImgInfo = ((PhotoView) view).getInfo();
                             bundle.putParcelable(ImageInfo.INTENT_CLICK_IMAGE_INFO, preImgInfo);
                             bundle.putInt(ImageInfo.INTENT_CLICK_IMAGE_POSITION, position);
                             imgImageInfos.clear();
                             for (int i = 0; i < imgList.size(); i++) {
                                 imgImageInfos.add(((PhotoView) parent.getChildAt(i)).getInfo());
                             }
                             bundle.putParcelableArrayList(ImageInfo.INTENT_IMAGE_INFOS, imgImageInfos);
                             int[] position = new int[2];
                             root.getLocationOnScreen(position);
                             //Must correct the ImageInfo in DialogFragment
                             preImgInfo.correct(position, getStatusBarHeight());
                             for (ImageInfo item : imgImageInfos) {
                                 item.correct(position,getStatusBarHeight());
                             }
                             ImageBrowseDialogFragment.newInstance(bundle).show(getSupportFragmentManager(), ImageBrowseDialogFragment.class.getSimpleName());
                         }
                     });

See ImageBrowseDialogFragment If the anchor activity is fullscreen,we need care about if ImageBrowseDialogFragment is fullscreen

    @Override
      public void onActivityCreated(Bundle savedInstanceState) {
          super.onActivityCreated(savedInstanceState);
          /**NOTE if the anchor activity is FullScreen,the following code must be used.
          and {@link ImageInfo#correct(int[], int)} the second params must be Zero..
          */
  //      getDialog().getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
          getDialog().getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT);
      }

#NOTE if you use ReboundViewPager to get rebound effect,this way may cause a problem when doing scale operation at first or last PhotoView try use ViewPager instead

#THANKS PhotoView from https://github.com/bm-x/PhotoView

Custom Activity Animations from https://www.youtube.com/watch?v=CPxkoe2MraA

License

Copyright 2015-2016 Bruce too

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

See LICENSE file for details.