要解决Android Studio中CustomListView输出奇怪结果的问题,可以按照以下步骤操作:
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("your_firebase_reference");
myRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
// 处理数据的逻辑
// 更新CustomListView
}
@Override
public void onCancelled(DatabaseError databaseError) {
// 处理取消的逻辑
}
});
ListView listView = findViewById(R.id.custom_list_view);
CustomAdapter adapter = new CustomAdapter(this, dataList); // dataList为存储Firebase数据的List
listView.setAdapter(adapter);
// 当Firebase数据更新时,更新适配器
// 在Firebase数据处理逻辑中添加以下代码
adapter.notifyDataSetChanged();
public class CustomAdapter extends BaseAdapter {
private Context context;
private List dataList;
public CustomAdapter(Context context, List dataList) {
this.context = context;
this.dataList = dataList;
}
@Override
public int getCount() {
return dataList.size();
}
@Override
public Object getItem(int position) {
return dataList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(R.layout.list_item, parent, false);
}
TextView textView = convertView.findViewById(R.id.text_view);
textView.setText(dataList.get(position).getDataName());
return convertView;
}
}
确保自定义的CustomAdapter正确地获取数据并在CustomListView中显示。
通过按照上述步骤检查您的代码,并确保正确设置和更新Firebase数据以及适配器,您应该能够解决CustomListView输出奇怪结果的问题。