关于UIAlertController 的一些用法

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1.设置两个UIAlertController

@property (nonatomic,strong)UIAlertController *alert;

@property (nonatomic,strong)UIAlertController *alert2;

2.通过懒加载创建

-(UIAlertController *)alert

{

if (_alert ==nil) {

_alert = [UIAlertControlleralertControllerWithTitle:@"标题"message:@"可以自定义一些提示框"preferredStyle:UIAlertControllerStyleActionSheet];

//UIAlertControllerStyleActionSheet

//UIAlertControllerStyleAlert

UIAlertActionStyleDefault = 0,

UIAlertActionStyleCancel,

UIAlertActionStyleDestructive

UIAlertAction *action1 = [UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleCancelhandler:nil];

UIAlertAction *action2 = [UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:nil];

UIAlertAction *action3 = [UIAlertActionactionWithTitle:@"action3"style:UIAlertActionStyleDestructivehandler:nil];

UIAlertAction *action4 = [UIAlertActionactionWithTitle:@"action4"style:UIAlertActionStyleDestructivehandler:nil];

[_alertaddAction:action1];

[_alertaddAction:action2];

[_alertaddAction:action3];

[_alertaddAction:action4];

}

return _alert;

}

3.当点击button时候

- (IBAction)btn1:(id)sender {

显示提示框

[selfpresentViewController:self.alertanimated:YEScompletion:nil];

}

4.添加textfield

-(UIAlertController *)alert2

{

if (_alert2 ==nil) {

_alert2 = [UIAlertControlleralertControllerWithTitle:@"标题"message:@"可以自定义一些提示框"preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction *action1 = [UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleCancelhandler:nil];

UIAlertAction *action2 = [UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:nil];

[_alert2addTextFieldWithConfigurationHandler:^(UITextField *_Nonnull textField) {

textField.placeholder =@"密码";

}];

[_alert2addTextFieldWithConfigurationHandler:^(UITextField *_Nonnull textField) {

textField.placeholder =@"账号";

}];

[_alert2addAction:action1];

[_alert2addAction:action2];

}

NSLog(@"----------------->>>");

return_alert2;

}

5.点击按钮的时候显示textfield提示框然后再textfield可以做一些操作

- (IBAction)btn2:(id)sender {

[selfpresentViewController:self.alert2animated:YEScompletion:nil];

}

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