例：
加依赖：
dependencies {
//okhttp依赖
implementation 'com.squareup.okhttp3:okhttp:3.6.0'
implementation 'com.squareup.okio:okio:1.11.0'
implementation 'com.squareup.okhttp3:logging-interceptor:3.6.0'
implementation 'com.github.bumptech.glide:glide:4.3.1'
annotationProcessor 'com.github.bumptech.glide:compiler:4.3.1'
implementation 'com.youth.banner:banner:1.4.10'
//recycleview依赖
implementation 'com.android.support:recyclerview-v7:26.1.0'
//图片
compile 'com.google.code.gson:gson:2.2.4'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
}
加权限：
<uses-permission android:name="android.permission.INTERNET"/>
DataBeans 类
http://www.xieast.com/api/news/news.php
public class Bean { /** * msg : 成功的返回 * code : 1 * data : [{"uniquekey":"1326bf3c4505783d4a964f81b6220e9d","title":"美国被特朗普坑惨了！又有3个铁杆盟友公开唱对台戏！","date":"2018-05-12 07:25","category":"头条","author_name":"大国军情","url":"http://mini.eastday.com/mobile/180512072544020.html","thumbnail_pic_s":"http://04.imgmini.eastday.com/mobile/20180512/20180512_fe1bf1b6ec00098f9455c84dc81e6763_cover_mwpm_03200403.jpg","thumbnail_pic_s02":"http://04.imgmini.eastday.com/mobile/20180512/20180512_3f636fca330f2311583896aed3185196_cover_mwpm_03200403.jpg","thumbnail_pic_s03":"http://04.imgmini.eastday.com/mobile/20180512/20180512_793fab03dadcd417bf2d8e5e1e48a0f5_cover_mwpm_03200403.jpg"},{"uniquekey":"9db153b507c10bbbed1d26c29c030eef","title":"第71届戛纳电影节：贾樟柯电影《江湖儿女》首映","date":"2018-05-12 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05:07","category":"头条","author_name":"光明网","url":"http://mini.eastday.com/mobile/180512050734360.html","thumbnail_pic_s":"http://09.imgmini.eastday.com/mobile/20180512/20180512050734_de8eae16975f2ddf8223b7c549096c70_3_mwpm_03200403.jpg","thumbnail_pic_s02":"http://09.imgmini.eastday.com/mobile/20180512/20180512050734_de8eae16975f2ddf8223b7c549096c70_1_mwpm_03200403.jpg","thumbnail_pic_s03":"http://09.imgmini.eastday.com/mobile/20180512/20180512050734_de8eae16975f2ddf8223b7c549096c70_2_mwpm_03200403.jpg"},{"uniquekey":"2f2995abb898f94aeacecd6537013404","title":"生活中诱发痔疮的五个原因不可忽略, 痔疮的治疗方法","date":"2018-05-12 04:56","category":"头条","author_name":"凤凰网","url":"http://mini.eastday.com/mobile/180512045657878.html","thumbnail_pic_s":"http://02.imgmini.eastday.com/mobile/20180512/20180512045657_15014004f9669c5aee78579be692dd66_1_mwpm_03200403.jpg","thumbnail_pic_s02":"http://02.imgmini.eastday.com/mobile/20180512/20180512045657_15014004f9669c5aee78579be692dd66_2_mwpm_03200403.jpg"}] */ private String msg; private int code; private List<DataBean> data; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public int getCode() { return code; } public void setCode(int code) { this.code = code; } public List<DataBean> getData() { return data; } public void setData(List<DataBean> data) { this.data = data; } public static class DataBean { /** * uniquekey : 1326bf3c4505783d4a964f81b6220e9d * title : 美国被特朗普坑惨了！又有3个铁杆盟友公开唱对台戏！ * date : 2018-05-12 07:25 * category : 头条 * author_name : 大国军情 * url : http://mini.eastday.com/mobile/180512072544020.html * thumbnail_pic_s : http://04.imgmini.eastday.com/mobile/20180512/20180512_fe1bf1b6ec00098f9455c84dc81e6763_cover_mwpm_03200403.jpg * thumbnail_pic_s02 : http://04.imgmini.eastday.com/mobile/20180512/20180512_3f636fca330f2311583896aed3185196_cover_mwpm_03200403.jpg * thumbnail_pic_s03 : http://04.imgmini.eastday.com/mobile/20180512/20180512_793fab03dadcd417bf2d8e5e1e48a0f5_cover_mwpm_03200403.jpg */ private String uniquekey; private String title; private String date; private String category; private String author_name; private String url; private String thumbnail_pic_s; private String thumbnail_pic_s02; private String thumbnail_pic_s03; public String getUniquekey() { return uniquekey; } public void setUniquekey(String uniquekey) { this.uniquekey = uniquekey; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getDate() { return date; } public void setDate(String date) { this.date = date; } public String getCategory() { return category; } public void setCategory(String category) { this.category = category; } public String getAuthor_name() { return author_name; } public void setAuthor_name(String author_name) { this.author_name = author_name; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getThumbnail_pic_s() { return thumbnail_pic_s; } public void setThumbnail_pic_s(String thumbnail_pic_s) { this.thumbnail_pic_s = thumbnail_pic_s; } public String getThumbnail_pic_s02() { return thumbnail_pic_s02; } public void setThumbnail_pic_s02(String thumbnail_pic_s02) { this.thumbnail_pic_s02 = thumbnail_pic_s02; } public String getThumbnail_pic_s03() { return thumbnail_pic_s03; } public void setThumbnail_pic_s03(String thumbnail_pic_s03) { this.thumbnail_pic_s03 = thumbnail_pic_s03; } } }
主方法类：
public class MainActivity extends AppCompatActivity { private static final int SUCCESS = 492; private RecyclerView mRlv; List<Bean.DataBean> datas = new ArrayList<>(); String path = "http://www.xieast.com/api/news/news.php"; Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); switch (msg.what) { case SUCCESS: String tvv = (String) msg.obj; Gson gson = new Gson(); Bean bean = gson.fromJson(tvv, Bean.class); List<Bean.DataBean> data = bean.getData(); datas.addAll(data); } } }; private recyclerviewAdapter adapter; private ImageButton mBtn01; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); getOk(); setadapter(); } private void setadapter() { mRlv.setLayoutManager(new LinearLayoutManager(this, OrientationHelper.VERTICAL, false)); adapter = new recyclerviewAdapter(this, datas); mRlv.setAdapter(adapter); adapter.SetOnItemClickListener(new recyclerviewAdapter.OnItemClickListener() { @Override public void onItemClick(int position) { adapter.swipe(position); } }); } private void getOk() { new Thread() { @Override public void run() { super.run(); //请求网络得到相应对象 OkHttpClient client = new OkHttpClient.Builder().build(); Request request = new Request.Builder().url(path).build(); try { Response response = client.newCall(request).execute(); //得到数据并转型 String s = response.body().string(); //更新UI不能在子线程中,使用Handler Message message = handler.obtainMessage(); message.obj = s; message.what = SUCCESS; handler.sendMessage(message); } catch (IOException e) { e.printStackTrace(); } } }.start(); return; } private void initView() { mRlv = (RecyclerView) findViewById(R.id.rlv); } }
activity_main 布局：
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout 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/rlv" android:layout_width="550dp" android:layout_height="wrap_content"> </android.support.v7.widget.RecyclerView> </RelativeLayout>
recyclerviewAdapter 适配器类：
public class recyclerviewAdapter extends RecyclerView.Adapter implements MoveSwipeListener { private Context context; private List<Bean.DataBean> datas; private OnItemClickListener onItemClickListener; public recyclerviewAdapter(Context context, List<Bean.DataBean> datas) { this.context = context; this.datas = datas; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LinearLayout.inflate(context, R.layout.item, null); MyViewHolder vh = new MyViewHolder(view); return vh; } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) { MyViewHolder vh= (MyViewHolder) holder; vh.tv.setText(datas.get(position).getTitle()); ImageLoader.getInstance().displayImage(datas.get(position).getThumbnail_pic_s(),vh.iv, ImageloaderUtil.getImageOptions()); vh.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (onItemClickListener!=null){ onItemClickListener.onItemClick(position); } } }); } @Override public int getItemCount() { return datas.size(); } private class MyViewHolder extends RecyclerView.ViewHolder { private final ImageView iv; private final TextView tv; public MyViewHolder(View itemView) { super(itemView); iv = itemView.findViewById(R.id.iv); tv = itemView.findViewById(R.id.tv); } } public interface OnItemClickListener { void onItemClick(int position); } public void SetOnItemClickListener(OnItemClickListener onItemClickListener){ this.onItemClickListener=onItemClickListener; } @Override public void onMove(int oldPosition, int newPosition) { } @Override public void swipe(int position) { //移除数据 datas.remove(position); //单条目刷新 this.notifyItemRemoved(position); } }
R.layout.item 适配器布局：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:orientation="horizontal" android:layout_height="80dp"> <ImageView android:id="@+id/iv" android:layout_height="match_parent" android:layout_width="0dp" android:layout_weight="2" app:srcCompat="@mipmap/ic_launcher_round" /> <TextView android:id="@+id/tv" android:layout_height="match_parent" android:layout_width="0dp" android:layout_weight="8" android:text="adsdfgkjdfsds" /> </LinearLayout>
MoveSwipeListener 接口：
public interface MoveSwipeListener { public void onMove(int oldPosition, int newPosition); public void swipe(int position); }
ItemTouchCallBack 类：
public class ItemTouchCallBack extends ItemTouchHelper.Callback { private recyclerviewAdapter myAdapter; public ItemTouchCallBack(recyclerviewAdapter myAdapter) { this.myAdapter = myAdapter; } /** * 获取移动的标记 移动和删除 * @param recyclerView * @param viewHolder * @return */ @Override public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) { //设置移动的标记 int dragFlag=ItemTouchHelper.UP|ItemTouchHelper.DOWN|ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT; //设置删除的标记 int swipFlag=ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT; //制作两种标记 int i = ItemTouchHelper.Callback.makeMovementFlags(dragFlag, swipFlag); return i; } /** * @param recyclerView * @param viewHolder 原先的viewHolder * @param target 拖动后的viewHolder * @return */ @Override public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) { //切换位置 int oldPosition = viewHolder.getAdapterPosition(); int newPosition = target.getAdapterPosition(); //交换位置-- myAdapter.onMove(oldPosition,newPosition); return true; } /** * 左右移动 * @param viewHolder * @param direction */ @Override public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) { int adapterPosition = viewHolder.getAdapterPosition(); myAdapter.swipe(adapterPosition); } }
ImageloaderUtil 图片加载类：
public class ImageloaderUtil { /** * ImageLoader的配置 * @param context */ public static void initConfig(Context context) { //配置 // File cacheFile=context.getExternalCacheDir(); File cacheFile= new File(Environment.getExternalStorageDirectory()+"/"+"imgages"); ImageLoaderConfiguration config=new ImageLoaderConfiguration.Builder(context) .memoryCacheExtraOptions(480, 800)//缓存图片最大的长和宽 .threadPoolSize(2)//线程池的数量 .threadPriority(4) .memoryCacheSize(2*1024*1024)//设置内存缓存区大小 .diskCacheSize(20*1024*1024)//设置sd卡缓存区大小 // .diskCache(new UnlimitedDiscCache(cacheFile))//自定义缓存目录 .writeDebugLogs()//打印日志内容 .diskCacheFileNameGenerator(new Md5FileNameGenerator())//给缓存的文件名进行md5加密处理 .build(); ImageLoader.getInstance().init(config); } /** * 获取图片设置类 * @return */ public static DisplayImageOptions getImageOptions(){ DisplayImageOptions optionsoptions=new DisplayImageOptions.Builder() .cacheInMemory(true)//使用内存缓存 .cacheOnDisk(true)//使用磁盘缓存 .bitmapConfig(Bitmap.Config.RGB_565)//设置图片格式 // .displayer(new RoundedBitmapDisplayer(5))//是否设置为圆角，弧度为多少 .build(); return optionsoptions; } }
MyApp 类：（记得在清单文件中添加name）
public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); ImageloaderUtil.initConfig(this); } }