what onEndReachedThreshold really means in react-native

Question

from documentation:

onEndReachedThreshold number

Threshold in pixels (virtual, not physical) for calling onEndReached. so I just w

Answer 1

For anyone using FlatList INSTEAD of ListView, note that the parameter units have changed.

For ListView it was in pixels from the bottom, but according to docs for FlatList, it is instead units of length from the bottom in list items.

How far from the end (in units of visible length of the list) the bottom edge of the list must be from the end of the content to trigger the onEndReached callback. Thus a value of 0.5 will trigger onEndReached when the end of the content is within half the visible length of the list.

Thus, if you want the list to update when the user is halfway down the current dataset, set the value to 0.5