recyclerview + OKHttp3 + 拦截器

                                recyclerview + OKHttp3 + 拦截器

1.首先添加依赖

okhttp依赖：

compile 'com.squareup.okhttp3:okhttp:3.9.0'

recyclerview依赖：

compile 'com.android.support:recyclerview-v7:26.0.+'

Gson依赖：

compile 'com.google.code.gson:gson:2.8.1'、
权限：

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

2.布局文件里写控件

<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerview"
android:layout_below="@+id/tv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"></android.support.v7.widget.RecyclerView>

item布局：

<ImageView
android:scaleType="fitXY"
android:padding="10dp"
android:id="@+id/img"
android:src="@mipmap/ic_launcher"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tv1"
android:padding="10dp"
android:text="成都"
android:textSize="20sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/tv2"
android:padding="10dp"
android:textSize="20sp"
android:text="赵振_无法长大"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>

3.mainActivity类：

public class MainActivity extends AppCompatActivity {
//"http://bz.budejie.com/?typeid=2&ver=3.4.3&no_cry=1&client=android&c=wallPaper&a=random&bigid=0"
String path = "http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.billboard.billList&type=1&size=10&offset=0 ";
List<Bean.SongListBean> list = new ArrayList<>();
private RecyclerView recyclerview;
Handler handle = new Handler();
ViewPager vp;
List<ImageView>imgs;
int[] arr = {R.drawable.a1,R.drawable.a2};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//初始化控件
initView();
//网络数据解析
initdata();
initData();

MyPagerAdapter adapter = new MyPagerAdapter();

vp.setAdapter(adapter);

}
class MyPagerAdapter extends PagerAdapter{

@Override
public int getCount() {
return imgs.size();
}

@Override
public boolean isViewFromObject(View view, Object object) {
return view ==object;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
int index = position % imgs.size();

container.addView(imgs.get(index));

return imgs.get(index);

}
}
//viewpager初始化数据
private void initData() {
imgs = new ArrayList<>();
for (int i = 0;i<arr.length;i++){
ImageView iv = new ImageView(this);
iv.setScaleType(ImageView.ScaleType.FIT_XY);
iv.setImageResource(arr[i]);
imgs.add(iv);
}
}
//okhttp网络解析
private void initdata() {

//实例化
//拦截器
OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor((Interceptor) new LoggingInterceptor()).build();
Request request = new Request.Builder()
.url(path)
.build();
Call call = okHttpClient.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {

}

@Override
public void onResponse(Call call, Response response) throws IOException {
String result = response.body().string();
Bean bean = Bean.objectFromData(result);
list = bean.song_list;
handle.post(new Runnable() {
@Override
public void run() {
//适配器
recyclerview.setAdapter(new MyAdapter(MainActivity.this,list));
}
});
}
});

}
//初始化数据
private void initView() {
recyclerview = (RecyclerView) findViewById(R.id.recyclerview);
vp = (ViewPager) findViewById(R.id.vp);
//布局管理器
LinearLayoutManager manager = new LinearLayoutManager(this);
recyclerview.setLayoutManager(manager);

}

}

4.Adapter适配器：

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>{
Context context;
List<Bean.SongListBean> list = new ArrayList<>();
ImageLoader loader;
DisplayImageOptions options;

public MyAdapter(Context context, List<Bean.SongListBean> list) {
this.context = context;
this.list = list;
loader = ImageLoader.getInstance();
ImageLoaderConfiguration configuration = ImageLoaderConfiguration.createDefault(context);
loader.init(configuration);
options = new DisplayImageOptions.Builder()
.cacheInMemory(true)
.cacheOnDisk(true)
.displayer(new FadeInBitmapDisplayer(20))
.build();
}

public void onRefresh() {
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = View.inflate(context,R.layout.item,null);
return new MyAdapter.ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.tv1.setText(list.get(position).album_title);
holder.tv2.setText(list.get(position).artist_name);
loader.displayImage(list.get(position).pic_big,holder.img,options);
}

@Override
public int getItemCount() {
return list==null ? 0 :list.size();
}

public class ViewHolder extends RecyclerView.ViewHolder {
ImageView img;
TextView tv1,tv2;
public ViewHolder(View itemView) {
super(itemView);
img = itemView.findViewById(R.id.img);
tv1 = itemView.findViewById(R.id.tv1);
tv2 = itemView.findViewById(R.id.tv2);
}
}
}