Android 根据属性更改背景颜色

我想根据光标当前成员的某些属性更改ListItem背景的颜色。我使用SimpleCursorAdapter将数据库的值绑定到ListView。我所做的是创建一个颜色选择器，如下所示：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_activated="true" android:drawable="@android:color/holo_blue_dark" />
    <item android:state_activated="true" android:state_selected="true" android:drawable="@android:color/holo_blue_dark" />
    <item android:state_selected="true" android:drawable="@color/rosa" />
    <item android:drawable="@android:color/transparent" />
</selector>

---

但它不起作用。做我想做的事的正确方法是什么？

无需选择。。。。只需通过编程将“setBackgroundColor（Color.Blue）”写在你的布局上`

if(columnIndex == 6)
{ 
   layout.setBackgroundColor(Color.Blue)
}

这是我的选择器xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <!-- Non focused states --> 
    <item android:state_focused="false" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/vhclistrowbackground" /> 
    <item android:state_focused="false" android:state_selected="true" android:state_pressed="false" android:drawable="@color/text_tab_unselected" /> 

    <!-- Focused states --> 
    <item android:state_focused="true" android:state_selected="false" android:state_pressed="false" android:drawable="@color/text_tab_selected" /> 
    <item android:state_focused="true" android:state_selected="true" android:state_pressed="false" android:drawable="@color/text_tab_unselected" /> 

    <!-- Pressed --> 
    <item android:state_pressed="true" android:drawable="@color/text_tab_unselected" /> 
</selector> 

---

也许更好的方法是编写自己的类，该类继承自SimpleCursorAdapter。诸如此类：

public class BubbleListAdapter extends SimpleCursorAdapter {

private LayoutInflater mLayoutInflater;
/** list holding statuses determining if an item is checked/unchecked. */
protected List<Boolean> mItemsCheckedStatus;
/** Cursor. */
private Cursor cursor;
/** reference to ArdoiseDatabaseAdapter. */
private MyDatabaseAdapter mMyDatabaseAdapter;
/** application context. */
private Context context;
/** references to Users. */
private Users mUsers;

/**
 * View holder for color item.
 */
private static class ViewHolder {
    /** bubble text. */
    TextView buubleText;
    /** user name. */
    TextView userName;
}

public BubbleListAdapter(Context context, int layout, Cursor cursor, String[] from, int[] to) {
    super(context, layout, cursor, from, to);
    this.cursor = cursor;
    mLayoutInflater = LayoutInflater.from(context);
    mMyDatabaseAdapter = MyDatabaseAdapter.getInstance();
    this.context = context;
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    View view = mLayoutInflater.inflate(R.layout.bubble_list_item, null);
    final ViewHolder holder = new ViewHolder();
    holder.buubleText = (TextView) view.findViewById(R.id.bubble_list_text);
    holder.userName = (TextView) view.findViewById(R.id.bubble_list_user_name);
    view.setTag(holder);
    return view;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {       
    Cursor c = getCursor();
    final ViewHolder holder;
    if (view != null) {
        holder = (ViewHolder) view.getTag();
        holder.buubleText.setText(c.getString(c.getColumnIndex(BubblesTableMetaData.BUBBLE_TEXT)));
        if (mUsers != null) {
            switch (c.getInt(c.getColumnIndex(BubblesTableMetaData.USER_ID))) {
            case MyConstans.COLOR_RED:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_red_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_red));
                holder.userName.setText(mUsers.getUser1());
                break;
            case MyConstans.COLOR_BLUE:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_blue_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_blue));
                holder.userName.setText(mUsers.getUser2());
                break;
            case MyConstans.COLOR_GREEN:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_green_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_green));
                holder.userName.setText(mUsers.getUser3());
                break;
            case MyConstans.COLOR_VIOLET:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_violet_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_violet));
                holder.userName.setText(mUsers.getUser4());
                break;
            default:
                break;
            }
        }
        view.setTag(holder);
    }
}

@Override
public Object getItem(int position) {
    Bubble bubble = null;
    if (cursor != null) {
        int index = 0;
        if (cursor.moveToFirst()) {
            do {
                if (index == position) {
                    bubble = mArdoiseDatabaseAdapter.mapBubble(context, cursor);
                }
                index++;
            } while (cursor.moveToNext());
            return bubble;
        }
    }
    return bubble;
}

/**
 * Get users.
 * 
 * @return the mUsers
 */
public Users getmUsers() {
    return mUsers;
}

/**
 * Set users.
 * 
 * @param mUsers
 *            the mUsers to set
 */
public void setmUsers(Users mUsers) {
    this.mUsers = mUsers;
}

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

公共类BubbleListAdapter扩展了SimpleCursAdapter{
私人停车场平面布置；
/**确定项目是否已选中/未选中的列表保留状态*/
受保护列表mItemsCheckedStatus；
/**光标*/
私有游标；
/**参考ArdoiseDatabaseAdapter*/
私有MyDatabaseAdapter mMyDatabaseAdapter；
/**应用程序上下文*/
私人语境；
/**对用户的引用*/
私人用户；
/**
*颜色项的视图保持架。
*/
私有静态类视图持有者{
/**气泡文本*/
文本视图buubleText；
/**用户名*/
文本视图用户名；
}
公共BubbleListAdapter（上下文上下文、int布局、光标、字符串[]从、int[]到）{
超级（上下文、布局、光标、从、到）；
this.cursor=游标；
mLayoutInflater=LayoutInflater.from（上下文）；
mMyDatabaseAdapter=MyDatabaseAdapter.getInstance（）；
this.context=上下文；
}
@凌驾
公共视图newView（上下文上下文、光标、视图组父对象）{
视图=MLAYOUTIONFLATER.充气（R.layout.bubble\u list\u项，空）；
最终视图持有者=新的视图持有者（）；
holder.buubleText=（TextView）view.findViewById（R.id.bubble\u list\u text）；
holder.userName=（TextView）view.findViewById（R.id.bubble\u list\u user\u name）；
视图.设置标签（支架）；
返回视图；
}
@凌驾
public void bindView（视图、上下文上下文、光标）{
游标c=getCursor（）；
最终持票人；
如果（视图！=null）{
holder=（ViewHolder）view.getTag（）；
holder.buubleText.setText（c.getString（c.getColumnIndex（bubbleTableMetadata.BUBBLE_TEXT））；
if（mUsers！=null）{
开关（c.getInt（c.getColumnIndex（bubbleTableMetadata.USER_ID）））{
案例MyConstans.COLOR\u RED：
holder.buubleText.setBackgroundResource（R.drawable.bubble\u red\u edit）；
holder.userName.setTextColor（context.getResources（）.getColor（R.color.bubble_red））；
holder.userName.setText（mUsers.getUser1（））；
打破
案例MyConstans.COLOR\u蓝色：
holder.buubleText.setBackgroundResource（R.drawable.bubble\u blue\u edit）；
holder.userName.setTextColor（context.getResources（）.getColor（R.color.bubble_blue））；
holder.userName.setText（mUsers.getUser2（））；
打破
案例MyConstans.COLOR\u绿色：
holder.buubleText.setBackgroundResource（R.drawable.bubble\u green\u edit）；
holder.userName.setTextColor（context.getResources（）.getColor（R.color.bubble_green））；
holder.userName.setText（mUsers.getUser3（））；
打破
案例MyConstans.COLOR\u紫色：
holder.buubleText.setBackgroundResource（R.drawable.bubble\u-violet\u-edit）；
holder.userName.setTextColor（context.getResources（）.getColor（R.color.bubble_-violet））；
holder.userName.setText（mUsers.getUser4（））；
打破
违约：
打破
}
}
视图.设置标签（支架）；
}
}
@凌驾
公共对象getItem（int位置）{
气泡=空；
如果（光标！=null）{
int指数=0；
if（cursor.moveToFirst（））{
做{
如果（索引==位置）{
bubble=mardoiseadapter.mapbuble（上下文，光标）；
}
索引++；
}while（cursor.moveToNext（））；
回归泡沫；
}
}
回归泡沫；
}
/**
*获取用户。
* 
*@回到缪斯家
*/
公共用户getmUsers（）{
回归缪斯者；
}
/**
*设置用户。
* 
*@param mUsers
*要设置的缪斯者
*/
公共作废设置器（用户设置器）{
this.mUsers=mUsers；
}
@凌驾
public int getCount（）{
返回cursor.getCount（）；
}
}

---

我希望这有帮助。

我不太确定，但您可以试试：

    if (columnIndex == 6) {
        boolean dudoso = cursor.getInt(columnIndex) == 1;
        TextView textView = (TextView) view;
        textView.setText(dudoso ? "dudoso" : null);
        if(dudoso)
        {
            v.setSelected(true);

        }
        return true;
    }

---

如果选择了行，我还希望有不同的颜色。我希望所选颜色优先于属性颜色。您是否将您的选择器xml作为您在主xml中单击的布局的背景…？？？是。我将在问题中添加listview行的布局。

public class BubbleListAdapter extends SimpleCursorAdapter {

private LayoutInflater mLayoutInflater;
/** list holding statuses determining if an item is checked/unchecked. */
protected List<Boolean> mItemsCheckedStatus;
/** Cursor. */
private Cursor cursor;
/** reference to ArdoiseDatabaseAdapter. */
private MyDatabaseAdapter mMyDatabaseAdapter;
/** application context. */
private Context context;
/** references to Users. */
private Users mUsers;

/**
 * View holder for color item.
 */
private static class ViewHolder {
    /** bubble text. */
    TextView buubleText;
    /** user name. */
    TextView userName;
}

public BubbleListAdapter(Context context, int layout, Cursor cursor, String[] from, int[] to) {
    super(context, layout, cursor, from, to);
    this.cursor = cursor;
    mLayoutInflater = LayoutInflater.from(context);
    mMyDatabaseAdapter = MyDatabaseAdapter.getInstance();
    this.context = context;
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    View view = mLayoutInflater.inflate(R.layout.bubble_list_item, null);
    final ViewHolder holder = new ViewHolder();
    holder.buubleText = (TextView) view.findViewById(R.id.bubble_list_text);
    holder.userName = (TextView) view.findViewById(R.id.bubble_list_user_name);
    view.setTag(holder);
    return view;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {       
    Cursor c = getCursor();
    final ViewHolder holder;
    if (view != null) {
        holder = (ViewHolder) view.getTag();
        holder.buubleText.setText(c.getString(c.getColumnIndex(BubblesTableMetaData.BUBBLE_TEXT)));
        if (mUsers != null) {
            switch (c.getInt(c.getColumnIndex(BubblesTableMetaData.USER_ID))) {
            case MyConstans.COLOR_RED:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_red_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_red));
                holder.userName.setText(mUsers.getUser1());
                break;
            case MyConstans.COLOR_BLUE:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_blue_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_blue));
                holder.userName.setText(mUsers.getUser2());
                break;
            case MyConstans.COLOR_GREEN:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_green_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_green));
                holder.userName.setText(mUsers.getUser3());
                break;
            case MyConstans.COLOR_VIOLET:
                holder.buubleText.setBackgroundResource(R.drawable.bubble_violet_edit);
                holder.userName.setTextColor(context.getResources().getColor(R.color.bubble_violet));
                holder.userName.setText(mUsers.getUser4());
                break;
            default:
                break;
            }
        }
        view.setTag(holder);
    }
}

@Override
public Object getItem(int position) {
    Bubble bubble = null;
    if (cursor != null) {
        int index = 0;
        if (cursor.moveToFirst()) {
            do {
                if (index == position) {
                    bubble = mArdoiseDatabaseAdapter.mapBubble(context, cursor);
                }
                index++;
            } while (cursor.moveToNext());
            return bubble;
        }
    }
    return bubble;
}

/**
 * Get users.
 * 
 * @return the mUsers
 */
public Users getmUsers() {
    return mUsers;
}

/**
 * Set users.
 * 
 * @param mUsers
 *            the mUsers to set
 */
public void setmUsers(Users mUsers) {
    this.mUsers = mUsers;
}

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

    if (columnIndex == 6) {
        boolean dudoso = cursor.getInt(columnIndex) == 1;
        TextView textView = (TextView) view;
        textView.setText(dudoso ? "dudoso" : null);
        if(dudoso)
        {
            v.setSelected(true);

        }
        return true;
    }