I'm trying to divide a page in three parts. I'd like to do it in percentage values, however that is not supported by Android. Instead I have to use android:layout_weight. But I have a hard time understanding it and getting it right. Especially how the actual size gets calculated. Is there a way to get a percentage value (0..100%) out of android:layout_weight?
I went through a few cases (see attached screenshot) to describe the problems. The colored fields are all <LinearLayout> with android:layout_height="fill_parent", because I want the full screen to be divided between those.
Case 1
Okay, simple. Every <LinearLayout> gets 33%.
Case 2
Ups?! The first (yellow) <LinearLayout> disappears completely? Why?
Case 3
Confused again. The yellow <LinearLayout> is back. However, the two first <LinearLayout> with the heavier weight get smaller? What is going on?
Case 4
I have absolutely no idea what the maths behind all this is.