package com.example.asus.networktest; import okhttp3.OkHttpClient;import okhttp3.Request; public class HttpUtil {   public static void sendOkHttpRequest(final String address, final okhttp3.Callback callback) {    OkHttpClient client = new OkHttpClient();    Request request = new Request.Builder()        .url(address)        .build();    client.newCall(request).enqueue(callback);  } }

package com.example.asus.networktest; public class App {   private String other;   private String u_Name;   private String u_id;   private String u_passWord;   private String u_token;   private String u_userName;   public String getOther() {    return other;  }   public void setOther(String other) {    this.other = other;  }   public String getU_Name() {    return u_Name;  }   public void setU_Name(String u_Name) {    this.u_Name = u_Name;  }   public String getU_id() {    return u_id;  }   public void setU_id(String u_id) {    this.u_id = u_id;  }   public String getU_passWord() {    return u_passWord;  }   public void setU_passWord(String u_passWord) {    this.u_passWord = u_passWord;  }   public String getU_token() {    return u_token;  }   public void setU_token(String u_token) {    this.u_token = u_token;  }   public String getU_userName() {    return u_userName;  }   public void setU_userName(String u_userName) {    thisu_userName = u_userName;  }}

package com.example.asus.networktest;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.TextView; import com.google.gson.Gson;import com.google.gson.reflect.TypeToken; import java.io.IOException;import java.util.List; import okhttp3.Call;import okhttp3.Response; public class MainActivity extends AppCompatActivity implements ViewOnClickListener{   String url="解析地址";  TextView responseText;   @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    Button sendRequest = (Button) findViewById(R.id.send_request);    responseText = (TextView) findViewById(R.id.response_text);    sendRequest.setOnClickListener(this);  }   @Override  public void onClick(View v) {    //這里點擊事件后，點擊后調用網絡請求sendRequestWithOkHttp方法    if (v.getId() == R.id.send_request) {      sendRequestWithOkHttp();    }  }   private void sendRequestWithOkHttp() {    new Thread(new Runnable() {      @Override      public void run() {        //在子線程中執行Http請求，并將最終的請求結果回調到okhttp3.Callback中        HttpUtil.sendOkHttpRequest(url,new okhttp3.Callback(){          @Override          public void onResponse(Call call, Response response) throws IOException {            //得到服務器返回的具體內容            String responseData=responsebody()string();            parseJSONWithGSON(responseData);            //顯示UI界面，調用的showResponse方法            showResponse(responseData.toString());          }          @Override          public void onFailure(Call call,IOException e){            //在這里進行異常情況處理          }        });      }    }).start();  }   private void parseJSONWithGSON(String jsonData) {    //使用輕量級的Gson解析得到的json    Gson gson = new Gson();    List<App> appList = gson.fromJson(jsonData, new TypeToken<List<App>>() {}.getType());    for (App app : appList) {      //控制臺輸出結果，便于查看      Log.d("MainActivity", "other" + app.getOther());      Log.d("MainActivity", "u_Name" + app.getU_Name());      Log.d("MainActivity", "u_id" + app.getU_id());      Log.d("MainActivity", "u_passWord" + app.getU_passWord());      Log.d("MainActivity", "u_token" + app.getU_token());    }  }  private void showResponse(final String response) {    //在子線程中更新UI    runOnUiThread(new Runnable() {      @Override      public void run() {        // 在這里進行UI操作，將結果顯示到界面上        responseText.setText(response);      }    });  }}

// 這里使用Java8的新特性Lambda表達式開啟線程  private void showResponse2(final String response) {    //在子線程中更新UI    runOnUiThread(() -> {        // 在這里進行UI操作，將結果顯示到界面上        responseTextsetText(response);    });  }

Button button = (Button)findViewById(R.id.bytton);button.setOnClickListener(v->{  // 處理點擊事件});

Button button = (Button)findViewById(R.id.bytton1);button.setOnClickListener((v)->{  // 處理點擊事件});