RecyclerViewPager

介绍：

一个基于RecyclerView实现的ViewPager，支持类似于gallary的fling操作

运行效果：

使用说明：

1. 继承自 RecyclerView.

2. 自定义 fling factor.

3. 自定义 paging trigger.

4. 支持 水平个垂直方向.

5. 支持 FragmentViewPager (api 12+)

其他效果图

fragment

垂直

gradle

compile('com.lsjwzh:recyclerviewpager:1.0.2')

xml:

<com.lsjwzh.widget.recyclerviewpager.RecyclerViewPager
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="15dp"
    android:paddingRight="15dp"
    app:triggerOffset="0.1"
    android:clipToPadding="false"/>

java api:

RecyclerViewPager mRecyclerView = (RecyclerViewPager) view.findViewById(R.id.list);
LinearLayoutManager layout = new LinearLayoutManager(getActivity(),LinearLayoutManager.HORIZONTAL,false);
mRecyclerView.setLayoutManager(layout);//setLayoutManager
//set adapter
mRecyclerView.setAdapter(new LayoutAdapter(activity, mRecyclerView, mLayoutId));
//set scroll listener
//this will show you how to implement a ViewPager like the demo gif
mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerViewEx recyclerView, int scrollState) {
                updateState(scrollState);
            }
            @Override
            public void onScrolled(RecyclerViewEx recyclerView, int i, int i2) {
                int childCount = mRecyclerView.getChildCount();
                int width = mRecyclerView.getChildAt(0).getWidth();
                int padding  = (mRecyclerView.getWidth() - width)/2;
                mCountText.setText("Count: " + childCount);
                for (int j = 0; j < childCount; j++) {
                    View v = recyclerView.getChildAt(j);
                    float rate = 0;
                    if (v.getLeft() <= padding) {
                        if (v.getLeft() >= padding - v.getWidth()) {
                            rate = (padding - v.getLeft()) * 1f / v.getWidth();
                        } else {
                            rate = 1;
                        }
                        v.setScaleY(1 - rate * 0.1f);
                    } else {
                        if (v.getLeft() <= recyclerView.getWidth() - padding) {
                            rate = (recyclerView.getWidth() - padding - v.getLeft()) * 1f / v.getWidth();
                        }
                        v.setScaleY(0.9f + rate * 0.1f);
                    }
                }
            }
        });
        // registering addOnLayoutChangeListener  aim to setScale at first layout action
        mRecyclerView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
            @Override
            public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
                if(mRecyclerView.getChildCount()<3){
                    if (mRecyclerView.getChildAt(1) != null) {
                        View v1 = mRecyclerView.getChildAt(1);
                        v1.setScaleY(0.9f);
                    }
                }else {
                    if (mRecyclerView.getChildAt(0) != null) {
                        View v0 = mRecyclerView.getChildAt(0);
                        v0.setScaleY(0.9f);
                    }
                    if (mRecyclerView.getChildAt(2) != null) {
                        View v2 = mRecyclerView.getChildAt(2);
                        v2.setScaleY(0.9f);
                    }
                }
            }
        });