how i can implement a custom UIAlertview with a progress bar and a cancel button?

Question

Hi iPhone application developers,

I am developing an iphone application. This application allows a user to upload images to my server. I want to show the upload prog

Answer 1

You can subclass the UIAlertView. I have done something like this, change it for your need.

Header file,

#import 

/* An alert view with a textfield to input text.  */
@interface AlertPrompt : UIAlertView    
{
    UITextField *textField;
}

@property (nonatomic, retain) UITextField *textField;
@property (readonly) NSString *enteredText;

- (id)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle okButtonTitle:(NSString *)okButtonTitle;

@end

Source code,

#import "AlertPrompt.h"


@implementation AlertPrompt

static const float kTextFieldHeight     = 25.0;
static const float kTextFieldWidth      = 100.0;

@synthesize textField;
@synthesize enteredText;

- (void) drawRect:(CGRect)rect {
    [super drawRect:rect];

    CGRect labelFrame;
    NSArray *views = [self subviews];
    for (UIView *view in views){
        if ([view isKindOfClass:[UILabel class]]) {
            labelFrame = view.frame;
        } else {    
            view.frame = CGRectMake(view.frame.origin.x, view.frame.origin.y + kTextFieldHeight , view.frame.size.width, view.frame.size.height);
        }

    }

    CGRect myFrame = self.frame;
    self.textField.frame = CGRectMake(95, labelFrame.origin.y+labelFrame.size.height + 5.0, kTextFieldWidth, kTextFieldHeight);
    self.frame = CGRectMake(myFrame.origin.x, myFrame.origin.y, myFrame.size.width, myFrame.size.height + kTextFieldHeight);

}

- (id)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle okButtonTitle:(NSString *)okayButtonTitle
{

    if (self = [super initWithTitle:title message:message delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:okayButtonTitle, nil])
    {
        // add the text field here, so that customizable from outside. But set the frame in drawRect. 
        self.textField = [[UITextField alloc] init];
        [self.textField setBackgroundColor:[UIColor whiteColor]]; 
        [self addSubview: self.textField];

       // CGAffineTransform translate = CGAffineTransformMakeTranslation(0.0, 20.0); 
      //  [self setTransform:translate];
    }
    return self;
}
- (void)show
{
    [textField becomeFirstResponder];
    [super show];
}
- (NSString *)enteredText
{
    return textField.text;
}
- (void)dealloc
{
    [textField release];
    [super dealloc];
}
@end