Memo: The image and title of uibutton are aligned to the left.

After uibutton setimage and settitle, the default image and title alignment is center,

Because the title length is not fixed,

Therefore, if you want to align the buttons with titles in the image vertically,

No matter how you adjust the imageedgeinsets and titleedgeinsets, the preceding images may not be neat,

So, just align to the left !! Simplified processing !!

Remember, this setting:

BTN. contenthorizontalalignment = uicontrolcontenthorizontalalignmentleft;