Question

我正在创建一个包含登录表单的应用程序，我正在使用单例类，jsonobject请求和volley库。有人可以告诉我如何从编辑文本中获取电子邮件和密码，以便将它们以post方式发送到URL吗？

这是login.java代码：

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
//import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonObjectRequest;
import org.json.JSONObject;


public class Login extends AppCompatActivity {

private EditText email,password;
private Button login;

@Override
protected void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.login);
    email = (EditText) findViewById(R.id.email);
    password = (EditText) findViewById(R.id.password);
    login = (Button) findViewById(R.id.bLogin);
    //ip azienda
    //final String url = "http://192.168.10.59/mygymapi/Login.php";
    //ip casa mia
    final String url = "http://192.168.56.1/mygymapi/Login.php";
    login.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View view){

        JsonObjectRequest jsObjRequest = new JsonObjectRequest

                    (Request.Method.POST, url, null, new Response.Listener<JSONObject>() {

                        @Override
                        public void onResponse(JSONObject response) {

                            Toast.makeText(getBaseContext(),"Response: " + response.toString(), Toast.LENGTH_SHORT).show();
                        }
                    }, new Response.ErrorListener() {

                        @Override
                        public void onErrorResponse(VolleyError error) {
                            // TODO Auto-generated method stub
                            VolleyLog.e("Error: ", error.getMessage());
                        }
                    });
            MySingleton.getInstance(getBaseContext()).addToRequestQueue(jsObjRequest);
        }
    });
}
}

单身人士代码：

import android.content.Context;
import android.graphics.Bitmap;
import android.util.LruCache;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.Request;
import com.android.volley.toolbox.Volley;



public class MySingleton {
private static MySingleton mInstance;
private RequestQueue mRequestQueue;
private ImageLoader mImageLoader;
private static Context mCtx;

private MySingleton(Context context) {
    mCtx = context;
    mRequestQueue = getRequestQueue();

    mImageLoader = new ImageLoader(mRequestQueue,
            new ImageLoader.ImageCache() {
                private final LruCache<String, Bitmap>
                        cache = new LruCache<String, Bitmap>(20);

                @Override
                public Bitmap getBitmap(String url) {
                    return cache.get(url);
                }

                @Override
                public void putBitmap(String url, Bitmap bitmap) {
                    cache.put(url, bitmap);
                }
            });
}

public static synchronized MySingleton getInstance(Context context) {
    if (mInstance == null) {
        mInstance = new MySingleton(context);
    }
    return mInstance;
}

public RequestQueue getRequestQueue() {
    if (mRequestQueue == null) {
        // getApplicationContext() is key, it keeps you from leaking the
        // Activity or BroadcastReceiver if someone passes one in.
        mRequestQueue = Volley.newRequestQueue(mCtx.getApplicationContext());
    }
    return mRequestQueue;
}

public <T> void addToRequestQueue(Request<T> req) {
    getRequestQueue().add(req);
}

public ImageLoader getImageLoader() {
    return mImageLoader;
}
}

Answer 1

您可以尝试以下代码。

代码

public class Login extends AppCompatActivity {

    private EditText email,password;
    private Button login;

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        email = (EditText) findViewById(R.id.email);
        password = (EditText) findViewById(R.id.password);
        login = (Button) findViewById(R.id.bLogin);
        //ip azienda
        //final String url = "http://192.168.10.59/mygymapi/Login.php";
        //ip casa mia
        final String url = "http://192.168.56.1/mygymapi/Login.php";
        login.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){

                JSONObject params = new JSONObject();
                String Email = email.getText().toString();
                String Password = password.getText().toString();

                try{
                        params.put("user_mail", Email);
                        params.put("user_pass", Password);
                }
                catch(JSONException e){
                        e.printStackTrace();
                }

            JsonObjectRequest jsObjRequest = new JsonObjectRequest

                        (Request.Method.POST, url, params, new Response.Listener<JSONObject>() {

                            @Override
                            public void onResponse(JSONObject response) {
                                int errorcode = response.getInt("errorCode");
                                String errormessage = response.getString("errorMessage");
                                JSONObject data = response.getJSONObject("data");
                                String token = data.getString("token");
                                Toast.makeText(getBaseContext(),"Token: " + token, Toast.LENGTH_SHORT).show();
                            }
                        }, new Response.ErrorListener() {

                            @Override
                            public void onErrorResponse(VolleyError error) {
                                // TODO Auto-generated method stub
                                VolleyLog.e("Error: ", error.getMessage());
                            }
                        });
                MySingleton.getInstance(getBaseContext()).addToRequestQueue(jsObjRequest);
            }
        });
    }
}

Answer 2

使用此功能发布数据

StringRequest stringRequest = new StringRequest(Request.Method.POST, REGISTER_URL,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Toast.makeText(MainActivity.this,response,Toast.LENGTH_LONG).show();
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Toast.makeText(MainActivity.this,error.toString(),Toast.LENGTH_LONG).show();
                }
            });

并将请求添加到请求队列

 RequestQueue requestQueue = Volley.newRequestQueue(this);
    requestQueue.add(stringRequest);

使用POST方法发送数据，android studio singleton

2 个答案: