在Android的listView中只顯示一次數組的最後一項

Question

我試圖動態地在ListView中添加項目，但是當我使用自定義適配器時，只有數組的最後一個元素與ListView綁定。

public class CustomAdapterForChat extends BaseAdapter 
{ 
    Context context; 
    ArrayList<String> message; 
    LayoutInflater inflter; 
    public CustomAdapterForChat(Context applicationContext, ArrayList<String> 
    message) 
    {//, int[] images,String[] statuses,String[] PhoneNumbers 
     this.message=message; 
     inflter = (LayoutInflater.from(applicationContext)); 
    } 

    @Override 
    public int getCount() { 
     return message.size(); 
    } 

    @Override 
    public Object getItem(int i) { 
     return i; 
    } 

    @Override 
    public long getItemId(int i) { 
     return i; 
    } 

    @Override 
    public View getView(int i, View view, ViewGroup viewGroup) { 

     view = inflter.inflate(R.layout.senderlayout, null); 
     TextView SenderMesssage=(TextView)view.findViewById(R.id.SenderMesssage); 
     TextView time=(TextView)view.findViewById(R.id.timeOfmessage); 
     SenderMesssage.setText(message.get(i)); 
     DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); 
     Date date = new Date(); 
     time.setText(date.toString()); 
     return view; 
    } 
} 

這是我打電話自定義適配器類的代碼，我的數組大小爲5和自定義適配器構造函數中我得到正確的值，但getView方法i只正在添加0。

public class ChatPage extends ListActivity { 

    String listItem[]={"Dell Inspiron", "HTC One X", "HTC Wildfire S", 
         "HTC Sense", "HTC Sensation XE"}; 
    EditText et; 
    List<String> arrayList; 
    ImageView button; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_chat_page); 
     et = (EditText) findViewById(R.id.writemessage); 
     ArrayList values = new ArrayList(); 
     for (int i = 0; i < listItem.length; i++) { 
      values.add(listItem[i]); 
     } 
     CustomAdapterForChat adapter = new CustomAdapterForChat(this,values); 
     setListAdapter(adapter); 
    } 

    public void onClick(View view) { 
      CustomAdapterForChat adapter = (CustomAdapterForChat) getListAdapter(); 
      String device; 
      ArrayList myList = new ArrayList(); 
      for (int i=0;i<adapter.getCount();i++) 
      { 
       myList.add(adapter.getItem(i)); 
      } 
      myList.add(et.getText().toString()); 
      CustomAdapterForChat adapternew = new CustomAdapterForChat(this,myList); 
      setListAdapter(adapternew); 

     } 

} 

ListView.xml

<?xml version="1.0" encoding="utf-8"?> 
<android.support.constraint.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context="tahatechno.tahatechno.ChatPage"> 
<LinearLayout 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:background="#ffffff" 
    android:orientation="vertical" 
    > 

    <ScrollView 
     android:layout_width="match_parent" 
     android:layout_weight="20" 
     android:layout_height="wrap_content"> 

     <ListView 
     android:id="@id/android:list" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:stackFromBottom="true"> 


     </ListView> 
    </ScrollView> 



    <include 
     layout="@layout/type_message_area" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="bottom" 
     /> 
</LinearLayout> 
</android.support.constraint.ConstraintLayout> 

Sender.XML

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" android:layout_width="match_parent" 
android:paddingLeft="@dimen/paddinfleftchatpage_" 
android:paddingRight="@dimen/padding_right_chat_page" 
android:layout_height="match_parent"> 
<LinearLayout 
    android:id="@+id/SenderLayout" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal"> 

    <TextView 
     android:id="@+id/SenderMesssage" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="@dimen/layout_marginTop_chat_page" 
     android:layout_weight="6" 
     android:background="@drawable/rounded_corner" 
     android:padding="@dimen/text_view_padding" 
     android:text="Android charting application xml ui design tutorial 
with example. Android charting application xml ui design tutorial with 
example. Android charting application xml ui design tutorial with example. 
Android charting application xml ui design tutorial with example." 
     android:textColor="#000" /> 



    </LinearLayout> 
    <LinearLayout 
    android:id="@+id/time" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_gravity="right" 
    android:orientation="vertical"> 
    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="right" 
     android:id="@+id/timeOfmessage" 
     android:text="5:25 am"/> 
    </LinearLayout> 
    </LinearLayout> 

Answer 1

你的循環是錯誤的。每次運行循環時，都會將相同的項目插入列表中。創建要插入列表中的對象的單個實例。否則粘貼循環代碼