我的应用程序有问题:我使用带有个性化适配器的列表视图,在这个适配器中,我想根据消息是否被读取来更改行的颜色。
在方法 GETVIEW 我控制一个变量,如果它等于 0 我想改变背景颜色。
所有作品和列表按我的意愿显示,
但是当有很多元素并且列表在任何方向滚动(从上到下,反之亦然)时,即使通过代码设置了另一种颜色,原始数据也会显示相同的颜色。
有没有人遇到过同样的问题?你能给我一些建议吗?
有我的适配器的代码:
public class LazyAdapterComunicazioni extends BaseAdapter {
private Activity activity;
private String[] id;
private String[] titolo;
private String[] data;
private String[] letto;
private static LayoutInflater inflater=null;
//public ImageLoader imageLoader;
public LazyAdapterComunicazioni(Activity a, String[] idCom, String[] titoloCom, String[] dataCom, String[]lettoCom) {
activity = a;
id = idCom;
titolo = titoloCom;
data = dataCom;
letto = lettoCom;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return id.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if(convertView == null)
{
vi = inflater.inflate(R.layout.comunicazionicslist, null);
}
ContactsViewHolder viewHolder = new ContactsViewHolder();
//Settimane
viewHolder.txtTitolo=(TextView)vi.findViewById(R.id.comCS_Titolo);
viewHolder.txtTitolo.setText(titolo[position].toString());
//Data
viewHolder.txtData=(TextView)vi.findViewById(R.id.comCS_Data);
viewHolder.txtData.setText(data[position].toString());
//ID
viewHolder.txtID=(TextView)vi.findViewById(R.id.comCS_ID);
viewHolder.txtID.setText(id[position].toString());
//Connessianne e Apretura del DB
String read = letto[position].toString();
if (read.equals("0")) //DA LEGGERE
{
//LAYOUT
viewHolder.rel = (RelativeLayout)vi.findViewById(R.id.comCS_RIGA);
viewHolder.rel.setBackgroundResource(R.drawable.sfondorigacomcs);
viewHolder.txtTitolo.setTextColor(Color.WHITE);
}
return vi;
}
static class ContactsViewHolder {
TextView txtTitolo;
TextView txtData;
TextView txtID;
RelativeLayout rel;
}
}
和单行的xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/comCS_RIGA"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#ffffff"
android:paddingTop="10dp"
android:paddingBottom="10dp"
>
<TextView
android:id="@+id/comCS_Data"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textColor="#000000"
android:layout_alignParentLeft="true"
android:layout_marginLeft="16dp"
android:textSize="12sp"
/>
<TextView
android:id="@+id/comCS_ID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/comCS_Data"
android:visibility="invisible"
/>
<TextView
android:id="@+id/comCS_Titolo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/comCS_Data"
android:layout_marginTop="2dp"
android:layout_marginLeft="16dp"
android:text=""
android:textColor="#357cbc"
android:textSize="18sp"
/>
<ImageView
android:id="@+id/feedbackCars_Positivo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/frecciacom"
android:contentDescription="@string/title_Comunicazioni"
android:layout_alignParentRight="true"
android:layout_marginTop="2dp"
android:layout_marginRight="16dp"
/>
</RelativeLayout>