Android - 帶2種不同顏色的ListView

我有一個ListView，我想改變它的Backgroundcolor。它應該是這樣的。 1.Item =灰色; 2.項目;白色; 3.項目=灰色; 4.項目=白色等，所以它應該有2背景顏色。我正在試圖將其運行近2個小時。我感到困惑。我無法起身解決方案。我希望有人能幫助我。Android - 帶2種不同顏色的ListView

for(int counter = 0; counter < itemList.size(); counter++){ 
      if(adapter.getItem(position) %2 == 1){ 
       Layout.setBackgroundColor(Color.GREY) 
        }; 
      else{ 
      Layout.setBackgroundColor(Color.WHITE); 
       }

因此，這裏是我的洞代碼：

我試了一下。我希望你們有人能告訴我：

MainActivity

public class MainActivity extends Activity implements OnItemClickListener { 

    ListView lview3; 
    ListViewCustomAdapter adapter; 
    private ArrayList<Object> itemList; 
    private ItemBean bean; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     prepareArrayLits(); 
     lview3 = (ListView) findViewById(R.id.listView1); 
     adapter = new ListViewCustomAdapter(this, itemList); 
     lview3.setAdapter(adapter); 




     lview3.setOnItemClickListener(this); 
    } 

    public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) { 
     // TODO Auto-generated method stub 
     RelativeLayout Layout = (RelativeLayout) findViewById(R.id.relativeLayout1); 
     ItemBean bean = (ItemBean) adapter.getItem(position); 
     for(int counter = 0; counter < itemList.size(); counter++){ 
      adapter.getItem(position); 
      Layout.setBackgroundColor(Color.CYAN);} 

     Toast.makeText(this, "Title => "+bean.getTitle()+" \n Description => "+bean.getDescription(), Toast.LENGTH_SHORT).show(); 
    } 

    /* Method used to prepare the ArrayList, 
    * Same way, you can also do looping and adding object into the ArrayList. 
    */ 
    public void prepareArrayLits() 
    { 
     itemList = new ArrayList<Object>(); 

     AddObjectToList(R.drawable.ic_add, "add", "Add desc", "2"); 
     AddObjectToList(R.drawable.ic_delete, "Delete", "Delete desc", "2"); 
     AddObjectToList(R.drawable.ic_down, "Down", "Down desc", "2"); 
     AddObjectToList(R.drawable.ic_info, "Information", "Information desc", "2"); 
     AddObjectToList(R.drawable.ic_help, "Help", "Help desc", "2"); 
     AddObjectToList(R.drawable.ic_download, "Download", "Download desc", "2"); 
     AddObjectToList(R.drawable.ic_mail, "Mail", "Mail desc", "2"); 
     AddObjectToList(R.drawable.ic_search, "Search", "Search desc", "2"); 
     AddObjectToList(R.drawable.ic_settings, "Settings", "Settings desc", "2"); 

    } 

    // Add one item into the Array List 
    public void AddObjectToList(int image, String title, String desc, String duration) 
    { 

     bean = new ItemBean(); 
     bean.setduration(duration); 
     bean.setDescription(desc); 
     bean.setImage(image); 
     bean.setTitle(title); 
     itemList.add(bean); 
    } 



}

ItemBean

public class ItemBean 
{ 
    String title; 
    String description; 
    int image; 
    String duration; 

    public String getTitle() { 
     return title; 
    } 
    public String getDuration() { 
     return duration; 
    } 

    public void setTitle(String title) { 
     this.title = title; 
    } 

    public String getDescription() { 
     return description; 
    } 

    public void setDescription(String description) { 
     this.description = description; 
    } 

    public int getImage() { 
     return image; 
    } 

    public void setImage(int image) { 
     this.image = image; 
    } 

    public void setduration(String duration) { 
     this.duration = duration; 
    } 
}

ListViewCustomAdapter

public class ListViewCustomAdapter extends BaseAdapter{ 

    ArrayList<Object> itemList; 

    public Activity context; 
    public LayoutInflater inflater; 

    public ListViewCustomAdapter(Activity context,ArrayList<Object> itemList) { 
     super(); 

     this.context = context; 
     this.itemList = itemList; 

     this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

    public int getCount() { 
     // TODO Auto-generated method stub 
     return itemList.size(); 
    } 

    public Object getItem(int position) { 
     // TODO Auto-generated method stub 
     return itemList.get(position); 
    } 

    public long getItemId(int position) { 
     // TODO Auto-generated method stub 
     return 0; 
    } 

    public static class ViewHolder 
    { 
     ImageView imgViewLogo; 
     TextView txtViewTitle; 
     TextView txtViewDescription; 
     TextView duration; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     // TODO Auto-generated method stub 

     ViewHolder holder; 
     if(convertView==null) 
     { 
      holder = new ViewHolder(); 
      convertView = inflater.inflate(R.layout.items, null); 

      holder.imgViewLogo = (ImageView) convertView.findViewById(R.id.imgViewLogo); 
      holder.txtViewTitle = (TextView) convertView.findViewById(R.id.txtViewTitle); 
      holder.txtViewDescription = (TextView) convertView.findViewById(R.id.txtViewDescription); 
      holder.duration = (TextView) convertView.findViewById(R.id.duration); 

      convertView.setTag(holder); 
     } 
     else 
      holder=(ViewHolder)convertView.getTag(); 

     ItemBean bean = (ItemBean) itemList.get(position); 

     holder.imgViewLogo.setImageResource(bean.getImage()); 
     holder.txtViewTitle.setText(bean.getTitle()); 
     holder.txtViewDescription.setText(bean.getDescription()); 
     holder.duration.setText(bean.getDuration()); 



     return convertView; 
    } 

}

XML佈局： * 項目 *

<RelativeLayout  android:id="@+id/relativeLayout1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@drawable/list_selector" xmlns:android="http://schemas.android.com/apk/res/android" android:padding="5dip"> 

    <ImageView 
     android:layout_width="50dip" 
     android:layout_height="50dip" 
     android:padding="3dip" 
     android:id="@+id/imgViewLogo" 
     android:src="@drawable/icon" 
     android:layout_alignParentLeft="true" 
     android:layout_centerInParent="true" 
     android:background="@drawable/image_bg" 
     android:layout_marginRight="5dip" 
     android:scaleType="center" 
     > 
    </ImageView> 

    <TextView 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:layout_height="wrap_content" 
     android:layout_alignTop="@+id/imgViewLogo" 
     android:text="TextView" 
     android:layout_width="wrap_content" 
     android:id="@+id/txtViewTitle" 
     android:layout_toRightOf="@+id/imgViewLogo" 
     android:textColor="#040404" 
     android:typeface="sans" 
     android:textSize="20dip" 
     android:textStyle="bold" 
     android:layout_marginRight="15dp" 
     > 
    </TextView> 

    <TextView 
     android:layout_height="wrap_content" 
     android:text="TextView" 
     android:layout_width="wrap_content" 
     android:id="@+id/txtViewDescription" 

     android:textColor="#343434" 
     android:textSize="15dip" 
     android:layout_marginTop="1dip" 
     android:layout_toRightOf="@+id/imgViewLogo" 
     android:layout_below="@+id/txtViewTitle" 
     android:layout_marginLeft="2dip" 
     android:layout_marginRight="15dp" 
     > 
    </TextView> 
    <TextView 
     android:id="@+id/duration" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentRight="true" 
     android:layout_alignTop="@+id/txtViewTitle" 
     android:gravity="right" 
     android:layout_marginRight="5dip" 
     android:textSize="15dip" 
     android:textColor="#10bcc9" 
     android:textStyle="bold"/> 

    <ImageView android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:src="@drawable/arrow" 
     android:layout_alignParentRight="true" 
     android:layout_centerVertical="true" 

     /> 

</RelativeLayout>

佈局： * 主要 *

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 


    > 


    <ListView 
     android:id="@+id/listView1" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:divider="#b5b5b5" 
     android:dividerHeight="1dp" 
     android:listSelector="@drawable/list_selector" 
     /> 



</LinearLayout>

每個提示將是有益的，感謝。

來源

2012-04-24 Ahmad

請勿使用for循環設置事件後的背景顏色。在您的適配器的getView方法中執行此操作。試試這個：

public View getView(int position, View convertView, ViewGroup parent) { 

    /* remainder is unchanged */ 

    convertView.setBackgroundColor(position % 2 == 0 ? Color.WHITE : Color.GREY); 
    return convertView; 
}

來源

2012-04-24 20:07:39 wsanville

我離開了一個星期，所以我無法測試它。現在我很困惑如何設置它。你可以幫我嗎？我應該在我的oncreate中調用getView（）嗎？我應該插入什麼參數？謝謝 – Ahmad 2012-04-30 21:42:34

您可以通過在自定義適配器的getView函數內設置背景來輕鬆實現。

試試這個代碼：

if(position % 2 == 0) 
      convertView.setBackgroundColor(Color.GREY); 
    else 
      convertView.setBackgroundColor(Color.WHITE);

來源

2012-04-24 20:08:11 Bobbake4

您可以從getView基於在項目位置通過返回不同的看法。

來源

2012-04-24 20:10:32 dwemthy

-1

我相信你可以基於位置

 if (position == 0) 
     { 
      view.SetBackgroundColor(Android.Graphics.Color.gray); 
     } 
     else if (position == 1) 
     { 
      view.SetBackgroundColor(Android.Graphics.Color.white); 
     }

等取決於你有多少位置有做到這一點。

來源

2014-01-05 16:41:52

這是另一種使用選擇器切換器更改背景的方法。使用此方法將保留選擇器的懸停和對焦顏色。

public View getView(int position, View convertView, ViewGroup parent) { 

    /* remainder is unchanged */ 

    convertView.setBackgroundResource(position % 2 == 0 ? R.drawable.list_selector_first : R.drawable.list_selector_second); 
    return convertView; 
}

來源

2016-05-18 21:23:47

Android - 帶2種不同顏色的ListView

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