Okhttp網路請求+Recyclerview展示資料
阿新 • • 發佈：2018-12-21
首先匯入依賴 //Recyclerview是listview的升級版 implementation 'com.android.support:recyclerview-v7:28.0.0' //okhttp implementation 'com.squareup.okhttp3:okhttp:3.10.0' //請求網路圖片 implementation 'com.github.bumptech.glide:glide:3.7.0' //解析資料 implementation 'com.google.code.gson:gson:2.2.4'
佈局 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/delete" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:text="刪除" /> <Button android:id="@+id/btn3" android:text="list" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:id="@+id/btn4" android:text="grid" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:id="@+id/btn5" android:text="flow" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> <android.support.v7.widget.RecyclerView android:id="@+id/review" android:layout_width="match_parent" android:layout_height="match_parent"></android.support.v7.widget.RecyclerView> </LinearLayout>
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center" android:padding="5dp" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" android:padding="5dp"> <ImageView android:id="@+id/img" android:layout_width="100dp" android:layout_height="100dp" android:src="@mipmap/ic_launcher" /> <TextView android:id="@+id/tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="3dp" android:text="Content" android:textAllCaps="false" /> </LinearLayout> </RelativeLayout>
介面卡
package com.example.day13;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.bumptech.glide.Glide;
import com.example.day13.bean.Person;
import java.util.ArrayList;
import java.util.List;
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
Context mContext;
List<Person.ResultBean> list;
public MyAdapter(Context context) {
this.mContext = context;
list = new ArrayList<>();
}
//把解析出來的資料進行新增
public void setData(List<Person.ResultBean> dataBeans) {
for (int i = 0; i < dataBeans.size(); i++) {
list.add(dataBeans.get(i));
}
//更新
notifyDataSetChanged();
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View view = View.inflate(mContext,R.layout.item,null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
viewHolder.tv.setText(list.get(i).getName());
Glide.with(mContext).load(list.get(i).getImageUrl()).into(viewHolder.img);
}
@Override
public int getItemCount() {
return list.size();
}
//刪除資料
public void delete(int i) {
if(list.size()>0){
list.remove(i);
notifyDataSetChanged();
}else{
Toast.makeText(mContext,"沒有更多資料",Toast.LENGTH_SHORT).show();
}
}
public class ViewHolder extends RecyclerView.ViewHolder {
ImageView img;
TextView tv;
public ViewHolder(View itemView) {
super(itemView);
img = itemView.findViewById(R.id.img);
tv = itemView.findViewById(R.id.tv);
}
}
}
//單獨封裝一個網路請求類
package com.example.day13.http;
import android.content.Context;
import android.widget.Toast;
import com.example.day13.bean.Person;
import com.google.gson.Gson;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class Http {
Context mContext;
public void getData(String url){
final OkHttpClient okhttp = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.build();
//構造一個Request物件
Request request = new Request.Builder().url(url).build();
//通過request的物件去構造得到一個Call物件
Call call = okhttp.newCall(request);
//呼叫的是call.enqueue，將call加入排程佇列，然後等待任務執行完成，我們在Callback中即可得到結果。
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Toast.makeText(mContext,"失敗嚕嚕嚕嚕",Toast.LENGTH_SHORT).show();
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String s = response.body().string();
Gson gson = new Gson();
Person ladyBean = gson.fromJson(s, Person.class);
mOnhttp.getlist(ladyBean.getResult());
}
});
}
public interface Onhttp{
void getlist(List<Person.ResultBean> list);
}
Onhttp mOnhttp;
public void setOnhttp(Onhttp Onhttp){
this.mOnhttp = Onhttp;
}
}
package com.example.day13;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.example.day13.bean.Person;
import com.example.day13.http.Http;
import com.google.gson.Gson;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity implements View.OnClickListener ,Http.Onhttp {
private Button delete;
private RecyclerView review;
List<Person.ResultBean> list = new ArrayList<>();
MyAdapter adapter;
private Button btn3;
private Button btn4;
private Button btn5;
Http http;
int page = 1;
private String url = "http://172.17.8.100/movieApi/movie/v1/findHotMovieList?page="+page+"&&count=10";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
adapter = new MyAdapter(this);
review.setAdapter(adapter);
}
private void initDate() {
http.getData(url);
http.setOnhttp(this);
}
private void initView() {
http = new Http();
delete = (Button) findViewById(R.id.delete);
review = (RecyclerView) findViewById(R.id.review);
delete.setOnClickListener(this);
btn3 = (Button) findViewById(R.id.btn3);
btn3.setOnClickListener(this);
btn4 = (Button) findViewById(R.id.btn4);
btn4.setOnClickListener(this);
btn5 = (Button) findViewById(R.id.btn5);
btn5.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.add:
break;
case R.id.delete:
adapter.delete(0);
break;
case R.id.btn3:
//listview檢視
// Toast.makeText(MainActivity.this,"少時誦詩書",Toast.LENGTH_SHORT).show();
LinearLayoutManager maager = new LinearLayoutManager(this);
review.setLayoutManager(maager);
initDate();
break;
case R.id.btn4:
//網路檢視
GridLayoutManager manager2 = new GridLayoutManager(this,4);
review.setLayoutManager(manager2);
break;
case R.id.btn5:
//瀑布檢視
StaggeredGridLayoutManager manager1 = new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL); review.setLayoutManager(manager1);
break;
}
}
@Override
public void getlist(final List<Person.ResultBean> list) {
runOnUiThread(new Runnable() {
@Override
public void run() {
adapter.setData(list);
}
});
}
}