MVP获取网络数据的登陆注册

CallBack接口

public interface MyCallBack<T> {
    void onSuccess(T t);
}

Model层的接口

public interface IModel {
    void reQuest(String dataUrl, Class clazz, MyCallBack callback);
}

Persenter层的接口

public interface IPersenter {
    void startRequest(String url,Class clazz);
}

View层的接口

public interface IView<T> {
    void onSuccess(T data);
}

NetUtils

public class NetUtil {

public static String reQuest(String dataUrl){
    String result="";
    try {
        URL url=new URL(dataUrl);
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setReadTimeout(3000);
        urlConnection.setConnectTimeout(3000);
        int responseCode = urlConnection.getResponseCode();
        if(responseCode==200){
            result=Stream2String(urlConnection.getInputStream());
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return result;
}

private static String Stream2String(InputStream inputStream) throws IOException {
    StringBuilder stringBuilder = new StringBuilder();
    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
    for (String tmp=bufferedReader.readLine();tmp!=null;tmp=bufferedReader.readLine()){
        stringBuilder.append(tmp);
    }
    return stringBuilder.toString();
}

Model层的实现类

public class IModelImpl implements IModel {

public <T> T reQuest(String dataUrl,Class clazz){
    return (T) new Gson().fromJson(NetUtil.reQuest(dataUrl),clazz);
}
@Override
public void reQuest(String dataUrl, final Class clazz, final MyCallBack callback) {
    new AsyncTask<String,Void,Object>(){
        @Override
        protected Object doInBackground(String... strings) {
            return reQuest(strings[0],clazz);
        }

        @Override
        protected void onPostExecute(Object o) {
            callback.onSuccess(o);
        }
    }.execute(dataUrl);
}

persenter层的实现类

public class IPersenterImpl implements IPersenter{

private IView mIView;
private IModelImpl model;

public IPersenterImpl(IView iView){
    this.mIView=iView;
    model=new IModelImpl();
}


public void detach(){
    mIView=null;
    model=null;
}

@Override
public void startRequest(String url, Class clazz) {

    model.reQuest(url, clazz, new MyCallBack() {
        @Override
        public void onSuccess(Object o) {
            mIView.onSuccess(o);
        }
    });
}

MainActivity

`public class MainActivity extends AppCompatActivity implements` `View.OnClickListener,IView {`

    private EditText deng_name,deng_pwd;
private Button button_denglu,button_zhuce;
private String name;
private String pwd;
private IPersenterImpl iPersenter;


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

    deng_name=findViewById(R.id.deng_name);
    deng_pwd=findViewById(R.id.deng_pwd);
    button_denglu=findViewById(R.id.button_denglu);
    button_zhuce=findViewById(R.id.button_zhuce);
    iPersenter=new IPersenterImpl(this);
    button_denglu.setOnClickListener(this);
    button_zhuce.setOnClickListener(this);
}
@Override
public void onClick(View v) {

    switch (v.getId()){
        case R.id.button_zhuce:
            Intent intent=new Intent(MainActivity.this,ZhuCeActivity.class);
            startActivity(intent);
            break;
        case R.id.button_denglu:
            name = deng_name.getText().toString();
            pwd = deng_pwd.getText().toString();
            iPersenter.startRequest("http://120.27.23.105/user/login?mobile="+name+"&password="+pwd,DengBean.class);
            break;
    }

}

@Override
public void onSuccess(Object data) {
    DengBean dengBean= (DengBean) data;
    String code = dengBean.getCode();
    if(code.equals("0")){
        Toast.makeText(MainActivity.this,"成功",Toast.LENGTH_SHORT).show();
        Intent intent=new Intent(MainActivity.this,DengLuActivity.class);
        startActivity(intent);
    }

}

@Override
protected void onDestroy() {
    super.onDestroy();
    iPersenter.detach();
}

ZhuActivity

public class ZhuCeActivity extends AppCompatActivity implements View.OnClickListener,IView {

private EditText zhu_name,zhu_pwd;
private Button button_zhu,fan;
private String name;
private String pwd;
private IPersenterImpl iPersenter;
//private String url=;


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

    zhu_name=findViewById(R.id.zhu_name);
    zhu_pwd=findViewById(R.id.zhu_pwd);
    button_zhu=findViewById(R.id.zhuce);
    fan=findViewById(R.id.fan);
    iPersenter=new IPersenterImpl(this);
    button_zhu.setOnClickListener(this);
    fan.setOnClickListener(this);
}
@Override
public void onClick(View v) {

    switch (v.getId()){
        case R.id.zhuce:
            name = zhu_name.getText().toString();
            pwd = zhu_pwd.getText().toString();
            iPersenter.startRequest("http://120.27.23.105/user/reg?mobile="+name+"&password="+pwd,ZhuCeBean.class);
            break;
        case R.id.fan:
            Intent intent=new Intent(ZhuCeActivity.this,MainActivity.class);
            startActivity(intent);
            break;
    }
}

@Override
public void onSuccess(Object data) {
    ZhuCeBean zhuCeBean= (ZhuCeBean) data;
    if(zhuCeBean.getCode().equals("0")){
        Toast.makeText(ZhuCeActivity.this,"注册成功",Toast.LENGTH_SHORT).show();
        Intent intent=new Intent(ZhuCeActivity.this,MainActivity.class);
        startActivity(intent);
    }else{
        Toast.makeText(ZhuCeActivity.this,"失败",Toast.LENGTH_SHORT).show();
    }
}

@Override
protected void onDestroy() {
    super.onDestroy();
    iPersenter.detach();
}

DengActivity

public class DengLuActivity extends AppCompatActivity {

private Button button;

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

    button=findViewById(R.id.fanHui);

    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent=new Intent(DengLuActivity.this,MainActivity.class);
            startActivity(intent);
        }
    });

}