When I'm editing the xml layout I'm always confused when choosing between
fill_parent , and I always end up thinking that I'm doing everything wrong because I don't know what each one is or if they are the same.
Could someone explain what the functionality of each one is?
What is the difference between match_parent and fill_parent ?
They are the same thing (at API Level 8+).
Yes, MATCH_PARENT and FILL_PARENT are just different constant names for the same integer value (
-1 if you're curious) used to specify the layout mode of a
View inside its
fill_parent was renamed to
match_parent as the problem with the old name was that it implied affecting the dimensions of the
parent , while
match_parent better described the resulting behavior – matching the dimension with the
What does match_parent do?
The function of
match_parent is to give a special value to the height or width requested by a View.
match_parent as there is no difference if you are on API versions 8+, and since cell phones => Android 2.2 it is advisable to use
match_parent , but for compatibility reasons for previous versions there is still
NOTE: In Android API versions from 1.6 to 2.1 it is advisable to use
match_parentin these versions certain errors occur, so in these API versions use
According to the official Android documentation, it specifies that they are the same thing and that there is no difference in using one or the other.