Three pop-up window modes in IOS and three pop-up window modes in IOS

Three pop-up window modes in IOS and three pop-up window modes in IOS

# Pragma mark method 1

/**

* Used in IOS7 and with a proxy

*/

-(Void) use1

{

// 1. Create an intermediate pop-up box with the "cancel" and "OK" buttons. Set the proxy to the current controller, and click "cancel" or "OK" for the Controller listener.

UIAlertView * alert = [[UIAlertView alloc] initWithTitle: @ "prompt" message: @ "click the image button" delegate: self cancelButtonTitle: @ "cancel" otherButtonTitles: @ "OK ", nil];

// 2. display on the screen

[Alert show];

}

# Click the button in the pop-up box that appears in pragma mark listening mode 1. The controller listens and clicks the cancel or OK button.

-(Void) alertView :( UIAlertView *) alertView clickedButtonAtIndex :( NSInteger) buttonIndex

{

// The index of the cancel button is 0 by default.

If (buttonIndex = 0) NSLog (@ "click Cancel ");

Else NSLog (@ "Click OK ");

}

 

# Pragma mark method 2

/**

* Used in ios8. No proxy is available. The operation to be executed when you click the button is placed in the block, so you do not need to set a proxy

*/

-(Void) use2

{

// 1. Create the bullet box controller. The UIAlertControllerStyleAlert style indicates that the bullet box is displayed in the center of the screen.

UIAlertController * alertVc = [UIAlertController alertControllerWithTitle: @ "prompt" message: @ "clicked Avatar" preferredStyle: UIAlertControllerStyleAlert];

 

// 2. Add the cancel button and click "cancel" in the block to perform the operation.

UIAlertAction * cancle = [UIAlertAction actionWithTitle: @ "cancel" style: UIAlertActionStyleCancel handler: ^ (UIAlertAction * action ){

NSLog (@ "click the cancel button ");

}];

UIAlertAction * confirm = [UIAlertAction actionWithTitle: @ "OK" style: UIAlertActionStyleDefault handler: ^ (UIAlertAction * action ){

NSLog (@ "Click OK ");

}];

// 3. Add the cancel and OK buttons to the bullet box controller.

[AlertVc addAction: cancle];

[AlertVc addAction: confirm];

// 4. The controller displays the dialog box control and does not perform any operations upon completion.

[Self presentViewController: alertVc animated: YES completion: ^ {

Nil;

}];

}

 

# Pragma mark method 3

/**

* Used in ios8. No proxy is used. The only difference from method 2 is that the bullet box style changes to "UIAlertControllerStyleActionSheet", and the bullet box appears at the bottom of the screen.

*/

-(Void) use3

{

UIAlertController * alertVc = [UIAlertController alertControllerWithTitle: @ "prompt" message: @ "click the Avatar" preferredStyle: UIAlertControllerStyleActionSheet];

UIAlertAction * cancle = [UIAlertAction actionWithTitle: @ "cancel" style: UIAlertActionStyleCancel handler: ^ (UIAlertAction * action ){

NSLog (@ "click Cancel ");

}];

UIAlertAction * confirm = [UIAlertAction actionWithTitle: @ "OK" style: UIAlertActionStyleDefault handler: ^ (UIAlertAction * action ){

NSLog (@ "Click OK ");

}];

[AlertVc addAction: cancle];

[AlertVc addAction: confirm];

[Self presentViewController: alertVc animated: YES completion: ^ {

Nil;

}];

}