[Android] TextView is not centered horizontally when folded

Phenomenon

I put a TextView inside the LinearLayout and set the gravity of the LinearLayout to center_horizontal. When the TextView has one line, it is properly centered on the left and right, but when the sentence becomes long and becomes two lines, it is biased to the left.

gravity of Layout is center_horizontal, but...

Solution

Set the gravity of the TextView to center_horizontal. If the statement is long and has two lines, the TextView has an end-to-end length of the LinearLayout (even if you can't see it). Therefore, as mentioned above, the gravity of the TextView must be center_horizontal in order to bring the sentence to the center of the left and right.