Android Question [solved]Why button text not center_vertical?

[Maodge]

Hi,
in my project , i set button text property as Attached File designer setting.png
"center_horizontal,center_vertical"
and script

btnMusicTuneMid.Width=15%x
btnMusicTuneMid.Height=40dip
btnMusicTuneMid.Top=355dip
btnMusicTuneMid.Left=67%x
btnMusicTuneMid.TextSize=22

but part of the text is not displayed,and the text is not center_vertical.
there some place at the top of button.
And how to solve this problem ?
Thanks

 

[klaus]

What padding values do you have?
The text size is probably too big for the button height.

 

[Maodge]

What padding values do you have?
The text size is probably too big for the button height.

device details: 720 X 1280, scale = 2 (320 dpi)

And could you give some suggestions about how to determine the size of the text?
Thanks a lot

 

[klaus]

It is possible to calculate the text height with the MeasureMultilineTextHeight method from the StringUtils library.
Then you need to know the Padding of the view, which are are extra spaces arround the text.
Additionnally, buttons with the default background are smaller than the external dimensions.

Attached a small test project showing the differences.

The upper button is a 'standard' button with a height of 40dip and a text size of 22, your case.
The second button has a Padding of 0, 0, 0, 0.
The third button has a 'standard' color background, with the full dimensions.