RN in the ListView of each item such as high

Today write the ListView of each item's layout when found that when the text is too long to be truncated can not be fully displayed, check for a long time to find that the fixed height is not set is scalable why do not stretch it. It took a long time to find that each item was so high that it was carefully checked to see that the view component of the outermost layer of each item was added Flex:1.

So for the entire ListView each item is equal to 1, resulting in the same height, the content is truncated, due to carelessness caused hereby recorded.

RN in the ListView of each item such as high