RecyclerView实现侧滑和网络断点续传
作者:GaoYue3321
这篇文章主要为大家详细介绍了RecyclerView实现侧滑和网络断点续传,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文实例为大家分享了RecyclerView实现侧滑和网络断点续传的具体代码,供大家参考,具体内容如下
RecyclerView侧滑
主布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <android.support.v7.widget.RecyclerView android:id="@+id/myrecycler" android:layout_width="match_parent" android:layout_height="wrap_content"> </android.support.v7.widget.RecyclerView> </LinearLayout>
侧滑布局
<com.daimajia.swipe.SwipeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <Button android:text="删除" android:id="@+id/b2" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:text="添加" android:id="@+id/b3" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> <TextView android:textSize="20dp" android:id="@+id/t1" android:layout_width="match_parent" android:layout_height="wrap_content" /> </com.daimajia.swipe.SwipeLayout>
适配器
public class MyAdapter1 extends RecyclerView.Adapter<MyAdapter1.RVHolder> { ArrayList<String> list= new ArrayList<>(); public void refershData(ArrayList<String> mlist){ list.addAll( mlist); notifyDataSetChanged(); } @NonNull @Override public RVHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.name1,viewGroup,false); return new RVHolder(view); } @Override public void onBindViewHolder(@NonNull RVHolder rvHolder, final int i) { rvHolder.textView.setText(list.get(i)); rvHolder.button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { isonclick.itemonclick(i); } }); } public interface Isonclick{ public void itemonclick(int id); } Isonclick isonclick; public void Onclick(Isonclick isonclick) { this.isonclick = isonclick; } @Override public int getItemCount() { return list.size(); } class RVHolder extends RecyclerView.ViewHolder{ TextView textView; Button button; public RVHolder(@NonNull View itemView) { super(itemView); textView = itemView.findViewById(R.id.t1); button = itemView.findViewById(R.id.b2); } } }
Activity
public class MainActivity extends AppCompatActivity { RecyclerView recyclerView; MyAdapter1 myAdapter1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); initData(); } private void init() { recyclerView = findViewById(R.id.myrecycler); final LinearLayoutManager manager = new LinearLayoutManager(this); manager.setOrientation(LinearLayoutManager.VERTICAL); recyclerView.setLayoutManager(manager); myAdapter1 = new MyAdapter1(); recyclerView.setAdapter(myAdapter1); myAdapter1.Onclick(new MyAdapter1.Isonclick() { @Override public void itemonclick(int id) { myAdapter1.list.remove(id); myAdapter1.notifyDataSetChanged(); } }); } public void initData(){ ArrayList<String> list= new ArrayList<>(); for (int i=0;i<80;i++){ list.add("第"+i+"个"); } myAdapter1.refershData(list); } }
效果
网络断点续传
public class Demo extends AppCompatActivity implements View.OnClickListener { long start = 0; long end = 1024*1024; long max; int time = 0; int sum = 0; SeekBar bar; Button jixu; Button parse; int temp; Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { switch (msg.what){ case 100: if(msg.obj != null){ if(time < 5){ new MyThread().start(); time++; }else if(sum >= max){ handler.sendEmptyMessage(200); } Log.e("##########",msg.obj.toString()); } break; case 200: Log.e("###########","下载完成"); break; case 300: bar.setProgress(sum); break; } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_demo); initView(); try { max = new MyTask().execute("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4").get(); bar.setMax((int) max); } catch (ExecutionException e) { e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); } new MyThread().start(); } @Override public void onClick(View v) { switch (v.getId()){ case R.id.start: if(temp >= 0) { time = temp; temp = -1; new MyThread().start(); } break; case R.id.parse: temp = time; time = 5; Message message = new Message(); message.what = 100; handler.sendMessage(message); break; default: break; } } class MyTask extends AsyncTask<String,String,Integer>{ @Override protected Integer doInBackground(String... strings) { try { URL url = new URL(strings[0]); HttpURLConnection hu = (HttpURLConnection) url.openConnection(); if(hu.getResponseCode() == 200){ int length = hu.getContentLength(); return length; } } catch (Exception e) { e.printStackTrace(); } return null; } } private void initView() { bar = findViewById(R.id.bar); jixu = findViewById(R.id.start); parse = findViewById(R.id.parse); jixu.setOnClickListener(this); parse.setOnClickListener(this); } private class MyThread extends Thread { @Override public void run() { try { URL url = new URL("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"); HttpURLConnection hu = (HttpURLConnection) url.openConnection(); hu.setRequestMethod("GET"); hu.setDoInput(true); hu.setDoOutput(true); String path = Environment.getExternalStorageDirectory().getPath(); File ff = new File(path, "wang.mp4"); RandomAccessFile file = new RandomAccessFile(ff, "rw"); file.seek(start); hu.setRequestProperty("Range","bytes="+start+"-"+end); InputStream is = null; if(hu.getResponseCode() == 206){ int l = 0; byte[] b = new byte[1024]; is = hu.getInputStream(); while ((l = is.read(b)) != -1){ file.write(b,0,l); sum += l; Message msg = new Message(); msg.what = 300; handler.sendMessage(msg); } start = end+1; end += 1024*1024; Message message = new Message(); message.what = 100; String ss = "正在下载"+start+"--"+end; message.obj = ss; handler.sendMessage(message); } } catch (Exception e) { e.printStackTrace(); } } } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。