MVC模式

MVC模式

一、MVC介绍

二、创建Model包

public interface GetModel {
    void getJsonData(OkCallBack okCallBack);
}

生成构造

public class GetModelImpl implements GetModel {
    @Override
    public void getJsonData(OkCallBack okCallBack) {
        OkHttpUtils.getInstance().doget("http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=20&page=1", okCallBack);
    }
}

三、创建OkHttp工具类

public class OkHttpUtils {
    private OkHttpClient okHttpClient;
    private Handler handler = new Handler();

    private OkHttpUtils() {
        okHttpClient = new OkHttpClient.Builder()
                .readTimeout(60 * 1000, TimeUnit.MILLISECONDS)
                .writeTimeout(60 * 1000, TimeUnit.MILLISECONDS)
                .build();
    }

    private static OkHttpUtils okHttpUtils = new OkHttpUtils();

    public static OkHttpUtils getInstance() {
        return okHttpUtils;
    }

    //get请求
    public void doget(String url, final OkCallBack okCallBack) {
        Request request = new Request.Builder().get().url(url).build();
        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                final String message = e.getMessage();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        okCallBack.onError(message);
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String string = response.body().string();
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        okCallBack.onOk(string);
                    }
                });
            }
        });
    }
}

创建接口

public interface OkCallBack {
    void onError(String message);

    void onOk(String json);
}

四、Activity代码

public class MainActivity extends AppCompatActivity {
    private Button btnId;
    private TextView textId;
    private GetModel getModel;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btnId = (Button) findViewById(R.id.btn_id);
        textId = (TextView) findViewById(R.id.text_id);
        getModel = new GetModelImpl();
        btnId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getModel.getJsonData(new OkCallBack() {
                    @Override
                    public void onError(String message) {
                        textId.setText(message + "");
                    }

                    @Override
                    public void onOk(String json) {
                        textId.setText(json + "");
                    }
                });
            }
        });
    }
}

本文地址：https://blog.csdn.net/Sun_Sees_You/article/details/107372592