UIButton 标题对齐在 RTL 中没有改变到正确的方向

Question

I am having an application in both LTR and RTL languages. Everything is fine but the UIButton title alignment is not changing to right though the UIButton flips itself. Here is the screenshot:

Constraints given for default language english:

What is the issue and why it happens? Do we need to set the title programatically aligned to right?

Answer 1

Use right alignment from storyboard as

or from programmatically as

buttonShowOnMap.contentHorizontalAlignment = .left//For left alignment

buttonShowOnMap.contentHorizontalAlignment = .right//For right alignment

Answer 2

Accepted answer did not help me. But following snippet worked to support both RTL and LTR languages automatically:

// makes button content support RTL <-> LTR
button.contentHorizontalAlignment = .leading

// makes titleLabel support RTL <-> LTR
button.titleLabel?.textAlignment = .natural 

Answer 3

No idea why happening but you must subclass UIButton so that you can override alignmentRectInsets .

override func alignmentRectInsets() -> UIEdgeInsets {
    var insets: UIEdgeInsets
    if (Left_Side_Button) {
        insets = UIEdgeInsetsMake(0, 7.0, 0, 0)
    }
    else {
        // Right Button
        insets = UIEdgeInsetsMake(0, 0, 0, 7.0)
    }
    return insets
}

And achieve it by above code.