【发布时间】：2013-12-17 01:09:14
【问题描述】：
在我的项目中，我需要从 web 服务获取消息并在 listview 中查看。我需要区分 listview 中的已读和未读消息。我检索了消息并将其存储在 sqlite 数据库中。如何区分已读和未读消息。而且列表视图也没有正确填充。而不是显示文本，而是在某些行中显示文本视图 ID。
这是我的代码，
public class Message_Adapter extends ArrayAdapter<Message> implements OnClickListener {
Activity activity;
int layoutResourceId;
Message user;
ArrayList<Message> data = new ArrayList<Message>();
public Message_Adapter(Activity act, int layoutResourceId,
List<Message> data) {
super(act, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.activity = act;
this.data = (ArrayList<Message>) data;
notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
UserHolder holder = null;
if (row == null) {
LayoutInflater inflater = LayoutInflater.from(activity);
row = inflater.inflate(layoutResourceId, parent, false);
holder = new UserHolder();
holder.fromnum = (TextView) row.findViewById(R.id.fromno);
holder.tonum = (TextView) row.findViewById(R.id.tonum);
holder.body= (TextView) row.findViewById(R.id.msgbody);
holder.date = (TextView) row.findViewById(R.id.msgdate);
holder.delete = (Button) row.findViewById(R.id.btn_delete);
holder.status = (TextView) row.findViewById(R.id.staty);
row.setTag(holder);
} else {
holder = (UserHolder) row.getTag();
}
user = data.get(position);
smsm=user.getID();
System.out.println("Smsm::::"+smsm);
holder.delete.setTag(user.getID());
holder.fromnum.setText(user.getmsgfrom());
holder.tonum.setText(user.getto());
holder.body.setText(user.getmsg());
holder.date.setText(user.getdate());
holder.status.setText(user.getstatus());
holder.delete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(final View v) {
// TODO Auto-generated method stub
// show a message while loader is loading
AlertDialog.Builder adb = new AlertDialog.Builder(activity);
adb.setTitle("Delete?");
adb.setMessage("Are you sure you want to delete ");
//final int user_id = Integer.parseInt(v.getTag().toString());
adb.setNegativeButton("Cancel", null);
adb.setPositiveButton("Ok",
new AlertDialog.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
// MyDataObject.remove(positionToRemove);
DatabaseHandler dBHandler = new DatabaseHandler(
activity.getApplicationContext());
dBHandler.Delete_Contact(smsm);
InboxActivity.this.onResume();
}
});
adb.show();
}
});
row.setOnClickListener(new OnItemClickListener(position));
return row;
}
这是我的收件箱自定义布局，
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="100sp"
android:background="@drawable/edittext"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/fromno"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/tonum"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/msgbody"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/msgdate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/staty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:orientation="horizontal" >
</LinearLayout>
</LinearLayout>
</LinearLayout>
【问题讨论】：
-
您使用数据库中的哪个变量来区分已读和未读消息？你能把你看到的错误人群的图片放上来吗？
-
我有名为 Status 的列。对于具有 0 值的行必须不同于具有 1 值的行...
-
@Lena Bru，我无法上传屏幕截图...而不是加载 textview 详细信息，而是加载那些 textviews 文本的资源 ID
-
发布 layoutResourceId 的 xml，您将行膨胀到其中，让我看看可能是资源 ID 的原因
-
@Lena bru!!我已经粘贴了我的自定义行布局
标签： android sqlite listview load populate