弹出多个修改背景的 AlertView

原创于 2011-12-06 20:14:10 发布 · 414 阅读

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#layer

本文详细介绍了如何实现并美化自定义alertView，包括添加自定义背景图片、调整大小及展示方式，通过实例代码展示了具体操作步骤。

static UIAlertView *alert = nil;

alert = [[UIAlertView alloc] initWithTitle:promptTitle message:promptMessage delegate:target cancelButtonTitle:cancelBtnTitle otherButtonTitles:nil];

  alert.delegate = target;
alert.title = promptTitle;
alert.message = promptMessage;

for (NSString *str in otherBtnTitleArray) {
  [alert addButtonWithTitle:str];
}

// [alert show];
// CGSize theSize;
//
// theSize = [alert frame].size;
//
// UIGraphicsBeginImageContext(theSize);
//
// [theImage drawInRect:CGRectMake(0, 0, theSize.width, theSize.height)];
//
// theImage = UIGraphicsGetImageFromCurrentImageContext();
//
// UIGraphicsEndImageContext();
//
// [[alert layer] setContents:(id)[theImage CGImage]];

UIImage *theImage = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"alert.png" ofType:nil]];
UIImageView *backgroundImageView = [[UIImageView alloc] initWithImage:theImage];
backgroundImageView.contentMode = UIViewContentModeScaleToFill;
[alert addSubview:backgroundImageView];
[alert sendSubviewToBack:backgroundImageView];
[alert show];

[alert release];

参考：http://stackoverflow.com/questions/6692361/custom-alertview-with-background