README copy 2.md

LIHAlert

#####LIHAlert provides animated banners for iOS which is written using the apple's newest programming language Swift 2.0.

[](https://travis-ci.org/Lasith Hettiarachchi/LIHAlert)

Usage

Import the module using

    import LIHAlert

To run the example project, clone the repo, and run pod install from the Example directory first.

####1. Predefined Banners

• Text banner
• Text with an ActivityIndicator
• Text with an icon
• Text with a button
• Text with two buttons
• Custom view banner

LIHAlert contains some predefined alerts for each Alert type. You can use following code snippets to use them.

#####1. Text Banner

    var textAlert: LIHAlert?
    override func viewDidLoad() {
        super.viewDidLoad()
        self.textAlert = LIHAlertManager.getTextAlert("Sample Message")
        self.textAlert?.initAlert(self.view)
    }
    func showBanner(sender: AnyObject) {
        self.textAlert?.show(nil, hidden: nil)
    }

Call showBanner() function to show the banner

To customize the banner,

    	self.textAlert = LIHAlertManager.getTextAlert("Sample Message")
        self.textAlert?.alertColor = UIColor.yellowColor()
        textAlert.contentText = message
        textAlert.alertColor = UIColor(red: 102.0/255.0, green: 197.0/255.0, blue: 241.0/255.0, alpha: 1.0)
        textAlert.alertHeight = 50.0
        textAlert.alertAlpha = 1.0
        textAlert.autoCloseEnabled=true
        textAlert.contentTextColor = UIColor.whiteColor()
        textAlert.hasNavigationBar = true
        textAlert.paddingTop = 0.0
        textAlert.animationDuration = 0.35
        textAlert.autoCloseTimeInterval = 1.5
        self.textAlert?.initAlert(self.view)

#####2. Banner with a text and image

    var successAlert: LIHAlert?
    override func viewDidLoad() {
        super.viewDidLoad()
        self.successAlert = LIHAlertManager.getSuccessAlert("Successfully subscribed")
        self.successAlert?.initAlert(self.view)
    }
    func showBanner(sender: AnyObject) {
        self.successAlert?.show(nil, hidden: nil)
    }

To change the icon,

    successAlert?.icon = UIImage(named:"imageName")

#####4. Loading Alert

This is a banner with a text and an activity indicator. This is not an auto close banner. You have to hide it when the process is finished.

    var processingAlert: LIHAlert?
    override func viewDidLoad() {
        super.viewDidLoad()
        self.processingAlert = LIHAlertManager.getProcessingAlert("Fetching data...")
        self.processingAlert?.initAlert(self.view)
    }
    func showBanner(sender: AnyObject) {
        self.processingAlert?.show(nil, hidden: nil)
    }
    override hideBanner(sender: AnyObject) {
        self.processingAlert?.hide(nil)
    }

Call showBanner() function to show the banner and hideBanner() to hide the banner. To change the activity indicator style,

    processingAlert?.activityIndicatorStyle = UIActivityIndicatorViewStyle.WhiteLarge

#####5. Text with a button Alert This alert contains a button along with a text. More suitable for notifying important messages to user.

    var textWithButtonAlert: LIHAlert?
    override func viewDidLoad() {
        super.viewDidLoad()
        self.textWithButtonAlert = LIHAlertManager.getTextWithButtonAlert("You have successfully subscribed for the monthly newsletter", buttonText: "Dismiss")
        self.textWithButtonAlert?.initAlert(self.view)
    }
    func showBanner(sender: AnyObject) {
        textWithButtonAlert?.show(nil, hidden: nil)
    }

Call showBanner() function to show the banner. Implement your view controller from LIHAlertDelegate.

class ViewController: LIHAlertDelegate {
    func buttonPressed(button: UIButton) {
        print(“You have pressed the button”)
        self.textWithButtonAlert?.hideAlert(nil)
    }
}

#####6. Text with two buttons Alert This alert contains two buttons along with a text.

    var textWithTwoButtonsAlert: LIHAlert?

    override func viewDidLoad() {
        super.viewDidLoad()
        self.textWithTwoButtonsAlert = LIHAlertManager.getTextWithTwoButtonsAlert("Do you want to subscribe for the monthly newsletter?", buttonOneText: "Subscribe", buttonTwoText: "Cancel")
        self.textWithTwoButtonsAlert?.initAlert(self.view)
    }
    func showBanner(sender: AnyObject) {
        textWithTwoButtonsAlert?.show(nil, hidden: nil)
    }

Call showBanner() function to show the banner. Implement your view controller from LIHAlertDelegate.

class ViewController: LIHAlertDelegate {
    func buttonOnePressed(button: UIButton) {
        self.textWithTwoButtonsAlert?.hideAlert({ () -> () in
            self.successAlert?.show(nil, hidden: nil)
        })
    }
    func buttonTwoPressed(button: UIButton) {
        self.textWithTwoButtonsAlert?.hideAlert(nil)
    }
}

#####7. Custom View Alert You can specify any view to act as the banner.

    var customViewAlert: LIHAlert?

    override func viewDidLoad() {
        super.viewDidLoad()
	//In this case I am using an ImageView as the banner
        let customView = UIImageView(frame: CGRectMake(0.0, 64.0, 100, 50))
        customView.image = UIImage(named: "customViewImage")
        self.customViewAlert = LIHAlertManager.getCustomViewAlert(customView)
        self.customViewAlert?.initAlert(self.view)
    }
    func showBanner(sender: AnyObject) {
        self.customViewAlert?.show(nil, hidden: nil)
    }

####2. Create a banner

	let alertTextAlert: LIHAlert = LIHAlert()
        alertTextAlert.alertType = LIHAlertType.Text
        alertTextAlert.contentText = message
        alertTextAlert.alertColor = UIColor(red: 102.0/255.0, green: 197.0/255.0, blue: 241.0/255.0, alpha: 1.0)
        alertTextAlert.alertHeight = 50.0
        alertTextAlert.alertAlpha = 1.0
        alertTextAlert.autoCloseEnabled=true
        alertTextAlert.contentTextColor = UIColor.whiteColor()
        alertTextAlert.hasNavigationBar = true
        alertTextAlert.paddingTop = 0.0
        alertTextAlert.animationDuration = 0.35
        alertTextAlert.autoCloseTimeInterval = 1.5

#####LIHALertType

	enum LIHAlertType {
    		case Custom, Text, TextWithLoading, TextWithIcon, TextWithButton, TextWithTwoButtons
	}

Use the completion callbacks

	//when showing an auto hiding banner
	lihAlert?.show({ () -> () in
            	//alert showed
            }, hidden: { () -> () in
                //alert hidden
        })
        
        //when hiding a banner
        lihAlert?.hideAlert({ () -> () in
            //Banner hidden
        })

Known Issues

1. Top margin

In some projects the alert may appear with a margin on top. Hopefully this will be fixed in the next release. Until then use the following solution.

Solution

Even the navigation bar is there, set it to false.

alert.hasNavigationBar = false

###Demo Project The LIHAlert workspace contains a demo project, also used for development.

Requirements

Xcode 7+

Installation

LIHAlert is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "LIHAlert"

or

Copy the LIHAlert folder into your project.

Author

Lasith Hettiarachchi, lasithih@yahoo.com

License

LIHAlert is available under the MIT license. See the LICENSE file for more info.