Android 仿写抖音视频切换功能.rar

package com.douyin; import android.os.Bundle; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.Gravity; import com.aliyun.vodplayer.media.AliyunVodPlayer; import com.aliyun.vodplayer.media.IAliyunVodPlayer; import com.github.rubensousa.gravitysnaphelper.GravityPagerSnapHelper; import com.github.rubensousa.gravitysnaphelper.GravitySnapHelper; import java.util.ArrayList; import java.util.List; import butterknife.ButterKnife; import butterknife.InjectView; /** * Created by bao on 2018/5/28. */ public class MainActivity extends BaseActivity { @InjectView(R.id.recycler_view) RecyclerView recyclerView; //当前pos,防止没滑动过去重新加载视频 private int current_position = -1; //停止拖动为true private boolean isstop_scroll = true; @Override protected int setContentViewResId() { return R.layout.activity_main; } @Override public void init() { String videolist[] = {"http://ksy.fffffive.com/mda-hinp1ik37b0rt1mj/mda-hinp1ik37b0rt1mj.mp4", "http://ksy.fffffive.com/mda-himtqzs2un1u8x2v/mda-himtqzs2un1u8x2v.mp4", "http://ksy.fffffive.com/mda-hiw5zixc1ghpgrhn/mda-hiw5zixc1ghpgrhn.mp4", "http://ksy.fffffive.com/mda-hiw61ic7i4qkcvmx/mda-hiw61ic7i4qkcvmx.mp4", "http://ksy.fffffive.com/mda-hihvysind8etz7ga/mda-hihvysind8etz7ga.mp4", "http://ksy.fffffive.com/mda-hiw60i3kczgum0av/mda-hiw60i3kczgum0av.mp4", "http://ksy.fffffive.com/mda-hidnzn5r61qwhxp4/mda-hidnzn5r61qwhxp4.mp4", "http://ksy.fffffive.com/mda-he1zy3rky0rwrf60/mda-he1zy3rky0rwrf60.mp4", "http://ksy.fffffive.com/mda-hh6cxd0dqjqcszcj/mda-hh6cxd0dqjqcszcj.mp4", "http://ksy.fffffive.com/mda-hifsrhtqjn8jxeha/mda-hifsrhtqjn8jxeha.mp4", "http://ksy.fffffive.com/mda-hics799vjrg0w5az/mda-hics799vjrg0w5az.mp4", "http://ksy.fffffive.com/mda-hfshah045smezhtf/mda-hfshah045smezhtf.mp4", "http://ksy.fffffive.com/mda-hh4mbturm902j7wi/mda-hh4mbturm902j7wi.mp4", "http://ksy.fffffive.com/mda-hiwxzficjivwmsch/mda-hiwxzficjivwmsch.mp4", "http://ksy.fffffive.com/mda-hhug2p7hfbhnv40r/mda-hhug2p7hfbhnv40r.mp4", "http://ksy.fffffive.com/mda-hieuuaei6cufye2c/mda-hieuuaei6cufye2c.mp4", "http://ksy.fffffive.com/mda-hibhufepe5m1tfw1/mda-hibhufepe5m1tfw1.mp4", "http://ksy.fffffive.com/mda-hhzeh4c05ivmtiv7/mda-hhzeh4c05ivmtiv7.mp4", "http://ksy.fffffive.com/mda-hfrigfn2y9jvzm72/mda-hfrigfn2y9jvzm72.mp4", "http://ksy.fffffive.com/mda-himek207gvvqg3wq/mda-himek207gvvqg3wq.mp4"}; String imglist[] = {"http://ksy.fffffive.com/mda-hinp1ik37b0rt1mj/mda-hinp1ik37b0rt1mj.jpg", "http://ksy.fffffive.com/mda-himtqzs2un1u8x2v/mda-himtqzs2un1u8x2v.jpg", "http://ksy.fffffive.com/mda-hiw5zixc1ghpgrhn/mda-hiw5zixc1ghpgrhn.jpg", "http://ksy.fffffive.com/mda-hiw61ic7i4qkcvmx/mda-hiw61ic7i4qkcvmx.jpg", "http://ksy.fffffive.com/mda-hihvysind8etz7ga/mda-hihvysind8etz7ga.jpg", "http://ksy.fffffive.com/mda-hiw60i3kczgum0av/mda-hiw60i3kczgum0av.jpg", "http://ksy.fffffive.com/mda-hidnzn5r61qwhxp4/mda-hidnzn5r61qwhxp4.jpg", "http://ksy.fffffive.com/mda-he1zy3rky0rwrf60/mda-he1zy3rky0rwrf60.jpg", "http://ksy.fffffive.com/mda-hh6cxd0dqjqcszcj/mda-hh6cxd0dqjqcszcj.jpg", "http://ksy.fffffive.com/mda-hifsrhtqjn8jxeha/mda-hifsrhtqjn8jxeha.jpg", "http://ksy.fffffive.com/mda-hics799vjrg0w5az/mda-hics799vjrg0w5az.jpg", "http://ksy.fffffive.com/mda-hfshah045smezhtf/mda-hfshah045smezhtf.jpg", "http://ksy.fffffive.com/mda-hh4mbturm902j7wi/mda-hh4mbturm902j7wi.jpg", "http://ksy.fffffive.com/mda-hiwxzficjivwmsch/mda-hiwxzficjivwmsch.jpg", "http://ksy.fffffive.com/mda-hhug2p7hfbhnv40r/mda-hhug2p7hfbhnv40r.jpg", "http://ksy.fffffive.com/mda-hieuuaei6cufye2c/mda-hieuuaei6cufye2c.jpg", "http://ksy.fffffive.com/mda-hibhufepe5m1tfw1/mda-hibhufepe5m1tfw1.jpg", "http://ksy.fffffive.com/mda-hhzeh4c05ivmtiv7/mda-hhzeh4c05ivmtiv7.jpg", "http://ksy.fffffive.com/mda-hfrigfn2y9jvzm72/mda-hfrigfn2y9jvzm72.jpg", "http://ksy.fffffive.com/mda-himek207gvvqg3wq/mda-himek207gvvqg3wq.jpg"}; videoinit(); final List<VideoBean> list = new ArrayList<>(); for (int i = 0; i < imglist.length; i++) { VideoBean bean = new VideoBean(); bean.setVideoid(i); bean.setVideoimg(imglist[i]); bean.setVideourl(videolist[i]); list.add(bean); } //初始化RecyclerView //创建LinearLayoutManager 对象 这里使用LinearLayoutManager 是线性布局的意思 LinearLayoutManager layoutmanager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false); //设置RecyclerView 布局 recyclerView.setLayoutManager(layoutmanager); //设置Adapter final VideoAdapter adapter = new VideoAdapter(list); recyclerView.setAdapter(adapter); //item切换监听 //向下滑动,可监听到最后一个 new GravityPagerSnapHelper(Gravity.BOTTOM, false, new GravitySnapHelper.SnapListener() { @Override public void onSnap(final int positions) { //切换Item之后的操作 Log.e("bottom", "" + positions); if (isstop_scroll == true) { if (positions == list.size() - 1) { if (current_position != positions) { adapter.setsnaphelper(positions); adapter.notifyDataSetChanged(); current_position = positions; } } } } }).attachToRecyclerView(recyclerView); //向上滑动,可监听到0 new GravityPagerSnapHelper(Gravity.TOP, false, new GravitySnapHelper.SnapListener() { @Override public void onSnap(final int positions) { //切换Item之后的操作 Log.e("top", "" + positions); if (isstop_scroll == true) { if (current_position != positions) { adapter.setsnaphelper(positions); adapter.notifyDataSetChanged(); current_position = positions; } } } }).attachToRecyclerView(recyclerView); //item切换监听 recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); switch (newState) { case 0: isstop_scroll = true; Log.e("--------------", newState + "recyclerview已经停止滚动"); break; case 1: isstop_scroll = false; Log.e("--------------", newState + "recyclerview正在被拖拽"); break; case 2: isstop_scroll = false; Log.e("--------------", newState + "recyclerview正在依靠惯性滚动"); break; } }