Step--1:警告框
1.代码
/*1.创建提示窗口
参数1;Title:标题
参数1;message:提示内容
参数1;Style:风格 UIAlertControllerStyleAlert 警告框
*/
UIAlertController*alertcontroller = [UIAlertControlleralertControllerWithTitle:@"提示"message:@"请按提示操作!"preferredStyle:UIAlertControllerStyleAlert];
//实例化取消按钮
UIAlertAction*cancelAction = [UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleCancelhandler:^(UIAlertAction* _Nonnullaction) {
//对按钮应用标准样式: UIAlertActionStyleDefault
//对按钮应用取消样式: UIAlertActionStyleCancel
//对按钮应用警示性的样式:UIAlertActionStyleDestructive
NSLog(@"点击了取消...");
}];
//实例化确定按钮
UIAlertAction*sureAction = [UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction* _Nonnullaction) {
NSLog(@"点击了确定...");
}];
[alertcontroller addAction:cancelAction];
[alertcontroller addAction:sureAction];
//弹出提示框
[selfpresentViewController:alertcontroller animated:YEScompletion:nil];
2.样式
Step--1:操作表
1.代码
/*1.创建提示窗口
参数1;Title:标题
参数1;message:提示内容
参数1;Style:风格 UIAlertControllerStyleActionSheet 操作表
*/
UIAlertController*alertcontroller = [UIAlertControlleralertControllerWithTitle:@"提示"message:@"请按提示操作!"preferredStyle:UIAlertControllerStyleActionSheet];
//实例化取消按钮
UIAlertAction*cancelAction = [UIAlertActionactionWithTitle:@"阿里"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction* _Nonnullaction) {
//对按钮应用标准样式: UIAlertActionStyleDefault
//对按钮应用取消样式: UIAlertActionStyleCancel
//对按钮应用警示性的样式:UIAlertActionStyleDestructive
NSLog(@"点击了取消...");
}];
//实例化确定按钮
UIAlertAction*sureAction = [UIAlertActionactionWithTitle:@"腾讯"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction* _Nonnullaction) {
NSLog(@"点击了确定...");
}];
//实例化其他按钮
UIAlertAction*otherAction = [UIAlertActionactionWithTitle:@"其他"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction* _Nonnullaction) {
NSLog(@"点击了其他...");
}];
[alertcontroller addAction:cancelAction];
[alertcontroller addAction:sureAction];
[alertcontroller addAction:otherAction];
//弹出提示框
[selfpresentViewController:alertcontroller animated:YEScompletion:nil];
2.样式
Step--1:带输入框的警告框
1.代码
UIAlertController*alertcontroller = [UIAlertControlleralertControllerWithTitle:@"提示"message:@"请按提示操作!"preferredStyle:UIAlertControllerStyleAlert];
__weak__typeof(&*self)weakSelf = self;//block 中防止循环引用
[alertcontroller addTextFieldWithConfigurationHandler:^(UITextField* _NonnulltextField) {
//textField 属性设置
textField.placeholder= @"请输入用户名";
//通过通知监听textField的改变
[[NSNotificationCenterdefaultCenter] addObserver:weakSelf selector:@selector(textfildChange0:) name:UITextFieldTextDidChangeNotificationobject:textField];
//通过SEL监听textField的改变
[textField addTarget:selfaction:@selector(textfildChange1:) forControlEvents:UIControlEventEditingChanged];
}];
//实例化取消按钮
UIAlertAction*cancelAction = [UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction* _Nonnullaction) {
NSLog(@"点击了取消...");
}];
//实例化确定按钮
UIAlertAction*sureAction = [UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction* _Nonnullaction) {
[[NSNotificationCenterdefaultCenter] removeObserver:selfname:UITextFieldTextDidChangeNotificationobject:nil];
//可以在这里获取textFields的信息
NSString*userName = alertcontroller.textFields.lastObject.text;
NSLog(@"该用户名:%@",userName);
}];
[alertcontroller addAction:cancelAction];
[alertcontroller addAction:sureAction];
//弹出提示框
[selfpresentViewController:alertcontroller animated:YEScompletion:nil];
- (void)textfildChange0:(NSNotification*)notification{
UITextField*textfield = notification.object;
NSLog(@"notification.userInfo %@",textfield.text);
}
- (void)textfildChange1:(UITextField*)textfield{
NSLog(@"textfield %@",textfield.text);
}
2.样式
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