xcode 在 iphone sdk 4.3 中单击按钮的警报消息
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Alert message for the button click in iphone sdk 4.3
提问by rani
I am beginner to xcode programming.Please tell me how to display the alert message when we are going to click the button in xcode-iphone-4.3
我是 xcode 编程的初学者。请告诉我如何在 xcode-iphone-4.3 中单击按钮时显示警报消息
My Code is as follows,
我的代码如下，
- (IBAction)buttonPressed:(id)sender{
UIAlertView* mes=[[UIAlertView alloc] initWithTitle:@"Hello World!!!!!!"
message:@"This is the Iphone app" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
[mes show];
[mes release];
Please help me regarding this.
请帮我解决这个问题。
回答by Suraj Mirajkar
-(IBAction)buttonOnePressed:(id)sender
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle: @"Clicked button 1"
message: @"Alert Message here"
delegate: self
cancelButtonTitle:@"Cancel"
otherButtonTitles:@"OK",nil];
[alert setTag:1];
[alert show];
}
-(IBAction)buttonTwoPressed:(id)sender
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle: @"Clicked button 2"
message: @"Alert Message here"
delegate: self
cancelButtonTitle:@"Cancel"
otherButtonTitles:@"OK",nil];
[alert setTag:2];
[alert show];
}
Below is the delegate method to track which button on Alertview is hit.
下面是跟踪 Alertview 上哪个按钮被点击的委托方法。
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (alertView.tag == 1) { // UIAlertView with tag 1 detected
if (buttonIndex == 0)
{
NSLog(@"user pressed Button Indexed 0");
// Any action can be performed here
}
else
{
NSLog(@"user pressed Button Indexed 1");
// Any action can be performed here
}
}
else if (alertView.tag == 2) { // UIAlertView with tag 2 detected
if (buttonIndex == 0)
{
NSLog(@"user pressed Button Indexed 0");
// Any action can be performed here
}
else
{
NSLog(@"user pressed Button Indexed 1");
// Any action can be performed here
}
}
}
You can set tag to UIAlertViewin case you have more than one UIAlertViews and can determine which UIAlertViewbutton is clicked in its delegate method clickedButtonAtIndexusing its respective tag.
UIAlertView如果您有多个UIAlertViews 并且可以使用其各自的标签确定UIAlertView在其委托方法中单击了哪个按钮，则可以将 tag 设置clickedButtonAtIndex为。
回答by Tendulkar
In IBAction you have to write the code and give the Connections to the Button
在 IBAction 中，您必须编写代码并将连接提供给按钮
回答by Satyam
Create the IBAction for your button and add the code for alert view in that method.
为您的按钮创建 IBAction 并在该方法中添加警报视图的代码。
