如何從SetOnItemClickListener ListView中

Question

下面調用適配器的新意圖是通過一個適配器

protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_online_users); 
    final ListView listview = (ListView) findViewById(R.id.listviewusers); 
    //onlineUsers.setAdapter() 

    //final ListView listview = (ListView) findViewById(R.id.listview); 

    Intent intent = getIntent(); 

    String username = intent.getStringExtra(connection.SERVER_ONLINE_USERS); 

    String[] values = username.split(","); 

    final ArrayList<String> list = new ArrayList<String>(); 
    for (int i = 0; i < values.length; ++i) { 
     list.add(values[i]); 
    } 
    final StableArrayAdapter adapter = new StableArrayAdapter(this, 
     android.R.layout.simple_list_item_1, list); 
    listview.setAdapter(adapter); 


    listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> parent, final View view, 
      int position, long id) { 
     final String item = (String) parent.getItemAtPosition(position); 

     // view.setAlpha(1); 

     } 


    }); 

    } 

我想要做的就是將被點擊的字符串項的列表視圖代碼列表視圖，啓動一個新的意圖和串項目傳遞給它，

類似於：

Intent i = new Intent(this, activity.class); 
sign.putExtra(KEY, value); 
startActivity(i); 

但是當我使用上述Intent代碼在我onItemClickListener()我收到一個錯誤。

"The Constructor Intent(New AdapterView.OnItemClickListener(){}, Class<activity>) is undefined" 

建議的方式來解決它是從意圖刪除參數，並有像這樣

Intent i = new Intent(); 

Answer 1

我對這個問題感到困惑，因爲你似乎知道如何做到這一點。因此，讓我們把它一起

@Override 
    public void onItemClick(AdapterView<?> parent, final View view, 
     int position, long id) { 
    final String item = (String) parent.getItemAtPosition(position); 

    // view.setAlpha(1); 

    Intent i = new Intent(view.getContext(), activity.class); // get a valid context 
    i.putExtra("someKey", item); //I don't know where sign came from 
    startActivity(i); 

    } 

然後把它在你的Activity如onCreate()與

Intent itent = getIntent(); 
String value = intent.getStringExtra("someKey");