android recyclerView嵌套progressbar

刚刚实现了GridView的实现方式，领导发话，最好用recyclerView更好，又用了一下午的时间把recyclerView研究了下，具体代码如下：

FragmentTwo.java


package com.example.navigation;

import android.content.Context;
import android.graphics.Rect;
import android.net.Uri;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.navigation.Navigation;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.SystemClock;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ProgressBar;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;


public class FragmentTwo extends Fragment {
    private View mRootView;
    private RecyclerView recyclerView;
    private PlayListAdapter adapter;
    private List<Playlist_Info> list = new ArrayList<>();
    private String Tag = "FragmentTwo";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        mRootView = inflater.inflate(R.layout.fragment_two, container, false);
        recyclerView = mRootView.findViewById(R.id.recycler_view);
        GridLayoutManager layoutManager = new GridLayoutManager(getContext(),4,GridLayoutManager.VERTICAL,false);
        recyclerView.addItemDecoration(new SpacesItemDecoration(new Rect(40,0,0,64)));
        recyclerView.setLayoutManager(layoutManager);
        initlist();
        adapter = new PlayListAdapter(getContext(),list);
        recyclerView.setAdapter(adapter);
        progress_bar(1);
        return mRootView;
    }


    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        Button fragment_one_back  = view.findViewById(R.id.btn_go_back_fragment_one);
        fragment_one_back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Navigation.findNavController(view).navigate(R.id.action_fragmentTwo_to_fragmentOne);
            }
        });

        Button btn_activity2 = view.findViewById(R.id.btn_go_activity2);
        btn_activity2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Navigation.findNavController(view).navigate(R.id.action_fragmentTwo_to_main2Activity);
            }
        });
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
    }

    public void initlist()
    {
        for(int i = 1; i < 21;i++)
        {
            if(2 == i)
            {
                list.add(new Playlist_Info("大江东区浪淘尽，千古风流人物","3:22",30));
                continue;
            }
            else
            {
                list.add(new Playlist_Info("精绝古城第"+String.valueOf(i)+"集","3:22",30));
            }
        }
    }
    private void progress_bar(final int positionInAdapter) {
        list.get(positionInAdapter).setIsPlaying(true);
        RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
        if(layoutManager instanceof GridLayoutManager)
        {
            GridLayoutManager gridmanager = (GridLayoutManager) layoutManager;
            int first_position = gridmanager.findFirstVisibleItemPosition();
            int last_position = gridmanager.findLastVisibleItemPosition();
            if(positionInAdapter >= gridmanager.findFirstVisibleItemPosition() &&
                    positionInAdapter <= gridmanager.findLastVisibleItemPosition())
            {
                int positionInListView = positionInAdapter - gridmanager.findFirstVisibleItemPosition();
            ProgressBar item_listening = (ProgressBar) recyclerView.getChildAt(positionInListView)
                    .findViewById(R.id.pb_listening_progressbar);
            item_listening.setVisibility(View.VISIBLE);
            }
            Log.d(Tag,first_position + "  "+ last_position);
        }
        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 1; i < 101; i++) {
                    final int progress = i;
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            publishProgress(positionInAdapter, progress);
                        }
                    });
                    SystemClock.sleep(5000);
                }
            }
        }).start();
    }

    public void publishProgress(final int positionInAdapter, final int progress_time) {
        list.get(positionInAdapter).set_item_progress(progress_time);
        RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
        if(layoutManager instanceof GridLayoutManager)
        {
            GridLayoutManager gridmanager = (GridLayoutManager) layoutManager;
            if(positionInAdapter >= gridmanager.findFirstVisibleItemPosition() &&
                    positionInAdapter <= gridmanager.findLastVisibleItemPosition())
            {
                int positionInListView = positionInAdapter - gridmanager.findFirstVisibleItemPosition();
                ProgressBar item = (ProgressBar) recyclerView.getChildAt(positionInListView)
                        .findViewById(R.id.pb_listening_progressbar);
                item.setProgress(progress_time);
            }
        }
    }
}


 




PlayListAdapter.java




package com.example.navigation;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.List;

public class PlayListAdapter extends RecyclerView.Adapter<PlayListAdapter.PlayListHoler> {
    private String log_tag = "GridViewAdapter";
    private Context context;
    private List<Playlist_Info> listitem;
    static class PlayListHoler extends RecyclerView.ViewHolder{
        TextView textview;
        TextView textview_time;
        AudioColumnView audioColumnView;
        ProgressBar pb_progressbar;
        ProgressBar pb_listening_progressbar;
        public PlayListHoler(View view)
        {
            super(view);
            pb_progressbar = view.findViewById(R.id.pb_progressbar);
            pb_listening_progressbar=view.findViewById(R.id.pb_listening_progressbar);
            textview = (TextView)view.findViewById(R.id.textView);
            textview_time = (TextView)view.findViewById(R.id.textView_time);
            audioColumnView = (AudioColumnView)view.findViewById(R.id.acv);
        }
    }
    public PlayListAdapter(Context context,List<Playlist_Info> listitem){
        this.context = context;
        this.listitem = listitem;
    }

    @NonNull
    @Override
    public PlayListHoler onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.playlist_item,parent,false);
        return new PlayListHoler(view);
    }

    @Override
    public void onBindViewHolder(@NonNull PlayListHoler holder, int position) {
        Playlist_Info info = listitem.get(position);
        if(info != null)
        {
            int text_left_margin = 0;
            if(position == 0)
            {
                text_left_margin = 19;
                holder.pb_progressbar.setProgress(38);
                holder.pb_listening_progressbar.setVisibility(View.GONE);
                holder.audioColumnView.setVisibility(View.GONE);
                holder.textview_time.setText("已听38%");
            }
            else if(position == 1)
            {
                text_left_margin = 67;
                holder.pb_listening_progressbar.setProgress(listitem.get(position).get_item_progress());
                holder.pb_progressbar.setVisibility(View.GONE);
                holder.pb_listening_progressbar.setVisibility(View.VISIBLE);
                holder.audioColumnView.setVisibility(View.VISIBLE);
                holder.textview_time.setText("已听38%");
            }
            else
            {
                text_left_margin = 26;
                holder.pb_progressbar.setProgress(0);
                holder.pb_progressbar.setVisibility(View.VISIBLE);
                holder.pb_listening_progressbar.setVisibility(View.GONE);

                holder.audioColumnView.setVisibility(View.GONE);
                holder.textview_time.setText( info.get_item_time());

            }
            Log.d(log_tag, String.valueOf(info.get_item_name().length()));
            //改变字体位置
            ViewGroup.MarginLayoutParams marginLayoutParams_text = new ViewGroup.MarginLayoutParams(holder.textview.getLayoutParams());
            marginLayoutParams_text.setMargins(text_left_margin,19,0,0);
            RelativeLayout.LayoutParams layoutParams_text = new RelativeLayout.LayoutParams(marginLayoutParams_text);
            holder.textview.setLayoutParams(layoutParams_text);
            holder.textview.setText( sub_string(info.get_item_name()));
        }
    }

    @Override
    public int getItemCount() {
        return listitem.size();
    }

    String sub_string(String source_string)
    {
        String sub_string = "";
        if(source_string.length()<8)
        {
            sub_string = source_string;
        }
        else
        {
            sub_string=source_string.substring(0, 4)+"..."+source_string.substring(source_string.length() - 4);
        }
        return sub_string;
    }
}




SpacesItemDecoration.java




package com.example.navigation;

import android.graphics.Rect;
import android.view.View;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

public class SpacesItemDecoration extends RecyclerView.ItemDecoration {
    private int left;
    private int right;
    private int top;
    private int bottom;

    public SpacesItemDecoration(Rect rect)
    {
        this.left = rect.left;
        this.right = rect.right;
        this.top = rect.top;
        this.bottom = rect.bottom;
    }

    @Override
    public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
        outRect.left = this.left;
        outRect.bottom = this.bottom;
        //由于每行都只有5个，所以第一个都是3的倍数，把左边距设为0
        if (parent.getChildLayoutPosition(view) %4==0) {
            outRect.left = 0;
        }

    }
}




xml




   <androidx.recyclerview.widget.RecyclerView
       android:id="@+id/recycler_view"
       android:layout_marginTop="174px"
       android:layout_alignParentRight="true"
       android:layout_width="1660px"
       android:layout_marginRight="100px"
       android:layout_height="match_parent" />







 希望我可以按照计划完成任务呀！！！！！



        

	      

	    

	  

	  

	    
      
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          原文地址：https://www.cnblogs.com/wxmwanggood/p/11754206.html