如何在UIAlertController中为UIImage着色

Question

如何创建带有取消按钮的UIAlertController和带图标的其他三个按钮？我支持iOS 8向上。 每个条目都应该着色......

Answer 1

我经常尝试和搜索，最后找到答案。这是：

**用图标创建`UIAlertController`：**

重要的部分是添加action1.setValue(UIImage(named: "Icon1"), forKey: "image")

的图标

let optionMenu = UIAlertController(title: nil, message: nil, preferredStyle: .ActionSheet)

let action1 = UIAlertAction(title: "Test 1", style: .Default, handler: {
    [unowned self] (alert: UIAlertAction!) -> Void in
    print("Action 1")
})
action1.setValue(UIImage(named: "Icon1"), forKey: "image")

let action2 = UIAlertAction(title: "Test 2", style: .Default, handler: {
    [unowned self] (alert: UIAlertAction!) -> Void in
    print("Action 2")
})
action2.setValue(UIImage(named: "Icon2"), forKey: "image")

let action3 = UIAlertAction(title: "Test 3", style: .Default, handler: {
    [unowned self] (alert: UIAlertAction!) -> Void in
    print("Action 3")
})
action3.setValue(UIImage(named: "Icon3"), forKey: "image")

let cancelAction = UIAlertAction(title: "Close", style: .Cancel, handler: nil)

optionMenu.addAction(action1)
optionMenu.addAction(action2)
optionMenu.addAction(action3)
optionMenu.addAction(cancelAction)

presentViewController(optionMenu, animated: true, completion: nil)

这就是我得到的。好到目前为止

**着色条目**

然后我尝试着色一切，并在UIAlertController的实例化下面添加了以下行：     optionMenu.view.tintColor = Colors.getColors（）。primaryTintColor

iOS8看起来相当不错，但是当我用iOS9测试相同的代码时，我感到很惊讶（本地化的差异是因为模拟器中的设置不同）：

<强> iOS8上

<强> iOS9

**解决方案**

我花了很长时间，但后来我找到了解决方案。 您必须在之后设置色调颜色以显示UIAlertController。

这是最终代码：

let optionMenu = UIAlertController(title: nil, message: nil, preferredStyle: .ActionSheet)

let action1 = UIAlertAction(title: "Test 1", style: .Default, handler: {
    [unowned self] (alert: UIAlertAction!) -> Void in
    print("Action 1")
})
action1.setValue(UIImage(named: "Icon1"), forKey: "image")

let action2 = UIAlertAction(title: "Test 2", style: .Default, handler: {
    [unowned self] (alert: UIAlertAction!) -> Void in
    print("Action 2")
})
action2.setValue(UIImage(named: "Icon2"), forKey: "image")

let action3 = UIAlertAction(title: "Test 3", style: .Default, handler: {
    [unowned self] (alert: UIAlertAction!) -> Void in
    print("Action 3")
})
action3.setValue(UIImage(named: "Icon3"), forKey: "image")

let cancelAction = UIAlertAction(title: "Close", style: .Cancel, handler: nil)

optionMenu.addAction(action1)
optionMenu.addAction(action2)
optionMenu.addAction(action3)
optionMenu.addAction(cancelAction)

presentViewController(optionMenu, animated: true, completion: nil)
optionMenu.view.tintColor = Colors.getColors().primaryTintColor