我尝试给我的ListView中的新项目添加动画效果。我有稳定的ID,因此我知道要对哪个元素进行动画处理。问题出现在ListView的回收机制上。当我确定最近插入了一个元素时,我会调用View的startAnimation方法。但是,然后视图被回收,并填充不同的数据。这导致UI动画显示错误的行。某个时刻,视图保存了正确的数据,但随后被回收了。我通过logcat确认了这一点。
是否有任何方法可以解决这个问题?
是否有任何方法可以解决这个问题?
public ExpensCursorAdapter(Context context, Cursor c, boolean autoRequery,
CopyOnWriteArraySet<String> fadeAnimateTags) {
super(context, c, autoRequery);
this.mFadeAnimTags = fadeAnimateTags;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
setup(view, context, cursor);
}
private void setup(View view, Context context, Cursor cursor) {
final String id = cursor.getString(4);
if (LOCAL_LOGV) Log.v(TAG, String.format("Create item for %s. Received view: %s", id, view.toString()));
view.setTag(id);
final TextView dateText = (TextView) view.findViewById(R.id.date);
final TextView timeText = (TextView) view.findViewById(R.id.time);
final TextView title = (TextView) view.findViewById(R.id.title);
final TextView amount = (TextView) view.findViewById(R.id.amount);
final Date date = new Date(cursor.getLong(0));
title.setText(cursor.getString(1));
dateText.setText(dFormat.format(date));
timeText.setText(tFormat.format(date));
amount.setText(String.format("%d Ft", cursor.getInt(2)));
if (cursor.getInt(3) == 1) {
timeText.setTextColor(Color.LTGRAY);
title.setTextColor(Color.LTGRAY);
dateText.setTextColor(Color.LTGRAY);
amount.setTextColor(Color.LTGRAY);
} else {
timeText.setTextColor(Color.BLACK);
title.setTextColor(Color.BLACK);
dateText.setTextColor(Color.BLACK);
amount.setTextColor(Color.BLACK);
}
if (mFadeAnimTags.contains(id)) {
view.setAnimation(AnimationUtils.loadAnimation(context, R.anim.fade));
mFadeAnimTags.remove(id);
}
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
final LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.expense_list_item, parent, false);
setup(view, context, cursor);
return view;
}