xUtils 获取网络数据 + RecycleView 显示数据+ F resco 加载图片 + ButterKnife 初始化控件

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导入 xUtils 和 gson 的jar包

导入依赖

compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.jakewharton:butterknife:8.8.1'
compile 'com.jakewharton:butterknife-compiler:8.8.1'
compile 'com.facebook.fresco:fresco:1.5.0'

页面

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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="bw.com.week2_test.MainActivity">

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
       android:id="@+id/rv_id" />

</LinearLayout>

item_rv.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fresco="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <!--
         fresco:placeholderImage="@mipmap/ic_launcher"  占位图片
         fresco:roundAsCircle="false"   //设置圆形图片

          fresco:roundedCornerRadius="1dp" 设置圆角的度数
          fresco:roundTopLeft="true"   左上角是否为圆形
          fresco:roundTopRight="false"
          fresco:roundBottomLeft="false"
          fresco:roundBottomRight="true"

         fresco:roundWithOverlayColor="@color/colorAccent"  填充颜色
        fresco:roundingBorderWidth="20dp" 边界线的宽度
        fresco:roundingBorderColor="@color/colorPrimary"  边界线的颜色
    -->
    <com.facebook.drawee.view.SimpleDraweeView
        android:layout_width="300dp"
        android:layout_height="200dp"
        android:id="@+id/iv_id"
        fresco:placeholderImage="@mipmap/ic_launcher"
        fresco:roundAsCircle="false" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_id"
        android:text="标题"
        android:textSize="20sp"
        />

    <View
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:background="@color/colorAccent"
        android:layout_margin="10dp"
        />

</LinearLayout>

代码

MyApp.java

public class MyApp extends Application {@Override
    public void onCreate() {super.onCreate();
        //初始化xUtils
        x.Ext.init(this);
        x.Ext.setDebug(true);

        //初始化Fresco
        Fresco.initialize(this);
    }
}

清单文件中:AndroidManifest.xml

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

<application
    android:name=".MyApp"

MainActivity.java

public class MainActivity extends AppCompatActivity {@BindView(value = R.id.rv_id)RecyclerView mRv;

    private List<VMoiver.DataBean> data;
    private RecycleAdapter adapter;

    private Unbinder unbinder;

    private String path = "http://app.vmoiver.com/apiv3/post/getPostInCate?cateid=0&p=1";


    @Override
    protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //绑定ButterKnife
        unbinder = ButterKnife.bind(this);

        //设置RecycleView展示的方式
        LinearLayoutManager manager = new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
        mRv.setLayoutManager(manager);

        //通过xUtils获取数据
        RequestParams params = new RequestParams(path);
        x.http().get(params, new Callback.CommonCallback<String>() {@Override
            public void onSuccess(String s) {//解析数据, 得到数据源
                VMoiver vMoiver = new Gson().fromJson(s,VMoiver.class);
                data = vMoiver.getData();

                //初始化适配器
                adapter = new RecycleAdapter(MainActivity.this,data);
                mRv.setAdapter(adapter);

            }@Override
            public void onError(Throwable throwable, boolean b) {}@Override
            public void onCancelled(CancelledException e) {}@Override
            public void onFinished() {}});



    }@Override
    protected void onDestroy() {super.onDestroy();
        //解绑
        unbinder.unbind();
    }
}

RecycleActivity.java

public class RecycleAdapter extends RecyclerView.Adapter<RecycleAdapter.ViewHolder> {private Context context;
    private List<VMoiver.DataBean> data;

    public RecycleAdapter(Context context,List<VMoiver.DataBean> data){this.context = context;
        this.data = data;
    }@Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {//TODO 绑定页面
        View view = LayoutInflater.from(context).inflate(R.layout.item_rv,parent,false);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }@Override
    public void onBindViewHolder(ViewHolder holder, int position) {holder.tv.setText(data.get(position).getTitle());

        //Fresco 加载图片
        Uri uri = Uri.parse(data.get(position).getImage());
        holder.sdv.setImageURI(uri);
    }@Override
    public int getItemCount() {return data.size();
    }class  ViewHolder extends RecyclerView.ViewHolder{//使用ButterKnife注解
        @BindView(R.id.iv_id)SimpleDraweeView sdv;
        @BindView(R.id.tv_id)TextView tv;

        public ViewHolder(View itemView) {super(itemView);
            //绑定
            ButterKnife.bind(this,itemView);
        }}
}