無法解析RecyclerView版本24.2.1

Question

我試圖用RecyclerView版本24.2.1進行編譯，但總是遇到build.gradle錯誤無法解析：com.android.support:RecyclerView- ...。 我也試過不同的版本，但總是出現同樣的故障。

我的build.gradle有以下形式：

android { 
    compileSdkVersion 24 
    buildToolsVersion "24.0.1" 
    ..... 
dependencies {  
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 
    exclude group: 'com.android.support', module: 'support-annotations' 
    }) 
    compile 'com.android.support:appcompat-v7:24.2.1' 
    compile 'com.android.support:design:24.2.1' 
    compile 'com.android.support:cardview-v7:24.2.1' 
    compile 'com.android.support:RecyclerView-v7:24.2.1' 
    compile 'org.greenrobot:eventbus:3.0.0' 
    compile 'org.nanohttpd:nanohttpd:2.2.0' 
    testCompile 'junit:junit:4.12' 
} 

通過SDK-經理我裝：

• Android SDK中工具25.2.5
• 的Android SDK平臺工具25.0.3
• Android SDK構建工具24.0.1
• API 25
• API 24
• 支持Android版本庫42
• 谷歌庫版本42

我怎樣才能解決這個故障？ 預先感謝

Answer 1

嘗試在小寫字母：

compile 'com.android.support:recyclerview-v7:24.2.1'

Answer 2

公共函數user_login_process（）{

$this->form_validation->set_rules('username', 'Username', 'trim|required'); 
    $this->form_validation->set_rules('password', 'Password', 'trim|required'); 

    if ($this->form_validation->run() == FALSE) 
    { 
     if(isset($this->session->userdata['logged_in'])) 
     { 
      $this->load->view('includes/header'); 
      $this->load->view('home/home_view'); 
      $this->load->view('includes/footer'); 
     } 
     else{ 
      $this->load->view('includes/header'); 
      $this->load->view('account/login_view'); 
      $this->load->view('includes/footer'); 
     } 
    } 
    else 
    { 
     $data = array(
         'username' => $this->input->post('username'), 
         'password' => $this->input->post('password') 
           ); 

     $result_is_staff = $this->login_database->login_staff($data); 
     $result_is_knowledge_seeker = $this->login_database->login_know_seeker($data); 


     if ($result_is_knowledge_seeker == TRUE) 
     { 
      $username = $this->input->post('username'); 

      $result = $this->login_database->read_knowledgeseeker_information($username); 

      if ($result != false) 
      { 
       $session_data = array(
           'username' => $result[0]->username 
           ); 

       // Add user data in session 
       $this->session->set_userdata('logged_in', $session_data); 

       $this->load->view('includes/header'); 
       $this->load->view('home/home_view'); 
       $this->load->view('includes/footer'); 
       //$this->load->view('admin_page'); 
      } 
     } 
     elseif($result_is_staff == TRUE) 
     { 
      $username = $this->input->post('username'); 

      $result = $this->login_database->read_staff_information($username); 

      if ($result != false) 
      { 
       $session_data = array(
           'username' => $result[0]->username 
           ); 

       // Add user data in session 
       $this->session->set_userdata('logged_in', $session_data); 

       $this->load->view('includes/header'); 
       $this->load->view('admin/admin_view'); 
       $this->load->view('includes/footer'); 
       //$this->load->view('admin_page'); 
      } 
     } 
     else 
     { 
      $data =array(
         'error_message' => 'Invalid Username or Password' 
         ); 

      //$this->load->view('login_form', $data); 

      $this->load->view('includes/header'); 
      $this->load->view('account/login_view',$data); 
      $this->load->view('includes/footer'); 
     } 
    } 
}