My ArrayList <NameValuePair>正在顯示NameValuePair無法解析

Question

任何人都可以給我完整的代碼，以獲取和發佈Android請求，例如https://wowjava.wordpress.com/2011/01/16/login-application-for-android/ 。請幫助我想從服務器進行登錄檢查。我想提出一個請求，請幫助我。作爲一個新的android開發者我無法解決這個問題。所以請幫助我。

的build.gradle（模塊：APP）：

apply plugin: 'com.android.application' 

android { 
    compileSdkVersion 23 
    buildToolsVersion "23.0.2" 

    defaultConfig { 
     applicationId "com.systechdigital.realtimetrackingandmonitoring" 
     minSdkVersion 17 
     targetSdkVersion 23 
     versionCode 1 
     versionName "1.0" 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 
} 

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    testCompile 'junit:junit:4.12' 
    compile 'com.android.support:appcompat-v7:23.1.1' 
    compile 'com.android.support:design:23.1.1' 
    compile 'com.android.support:support-v4:23.1.1' 
} 

我的MainActivity：

package com.systechdigital.realtimetrackingandmonitoring; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.support.design.widget.NavigationView; 
import android.support.v4.view.GravityCompat; 
import android.support.v4.widget.DrawerLayout; 
import android.support.v7.app.AppCompatActivity; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import org.apache.http.message.BasicNameValuePair; 
import org.apache.http.NameValuePair; 



public class MainActivity extends AppCompatActivity 
     implements NavigationView.OnNavigationItemSelectedListener { 

    ImageView icon_image; 
    ImageView login_image; 
    EditText username_editText; 
    EditText password_editText; 
    Button remember_me_button; 
    Button forget_password_button; 
    Button sign_up_button; 



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

     icon_image =(ImageView)findViewById(R.id.icon_imageView_id); 
     login_image=(ImageView)findViewById(R.id.imageView_login_id); 
     username_editText=(EditText)findViewById(R.id.user_login_email_id); 
     password_editText=(EditText)findViewById(R.id.login_password); 
     remember_me_button=(Button)findViewById(R.id.remember_me_id); 
     forget_password_button=(Button)findViewById(R.id.forget_password_id); 
     sign_up_button=(Button)findViewById(R.id.sign_up_button_id); 


     login_image.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       Intent mainToSignUpIntent=new Intent(getApplicationContext(),SignUPActivity.class); 
       startActivity(mainToSignUpIntent); 

       ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>(); 

      } 
     }); 

    } 

    @Override 
    public void onBackPressed() { 
     DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
     if (drawer.isDrawerOpen(GravityCompat.START)) { 
      drawer.closeDrawer(GravityCompat.START); 
     } else { 
      super.onBackPressed(); 
     } 
    } 



    @SuppressWarnings("StatementWithEmptyBody") 
    @Override 
    public boolean onNavigationItemSelected(MenuItem item) { 
     // Handle navigation view item clicks here. 
     int id = item.getItemId(); 

     if (id == R.id.nav_camera) { 
      // Handle the camera action 
     } else if (id == R.id.nav_gallery) { 

     } else if (id == R.id.nav_slideshow) { 

     } else if (id == R.id.nav_manage) { 

     } else if (id == R.id.nav_share) { 

     } else if (id == R.id.nav_send) { 

     } 

     DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
     drawer.closeDrawer(GravityCompat.START); 
     return true; 
    } 
} 

Answer 1

ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>(); 

這是錯誤的聲明，而不是NameValuePair你想成爲給出數據類型arraylist包含元素如

ArrayList<String> postParameters = new ArrayList<String>();