气泡视图

- (UIView *)bubbleView:(NSString *)text from:(BOOL)fromSelf {
	UIView *returnView = [[UIView alloc] initWithFrame:CGRectZero];
	returnView.backgroundColor = [UIColor clearColor];
	
	UIImage *bubble = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:fromSelf ? @"bubbleSelf" : @"bubble" ofType:@"png"]];
	UIImageView *bubbleImageView = [[UIImageView alloc] initWithImage:[bubble stretchableImageWithLeftCapWidth:21 topCapHeight:14]];
	
	UIFont *font = [UIFont systemFontOfSize:12];
	CGSize size = [text sizeWithFont:font constrainedToSize:CGSizeMake(150.0f, 1000.0f) lineBreakMode:UILineBreakModeCharacterWrap];
	
	UILabel *bubbleText = [[UILabel alloc] initWithFrame:CGRectMake(21.0f, 14.0f, size.width + 10, size.height + 10)];
	bubbleText.backgroundColor = [UIColor clearColor];
	bubbleText.font = font;
	bubbleText.numberOfLines = 0;
	bubbleText.lineBreakMode = UILineBreakModeCharacterWrap;
	bubbleText.text = text;
	
	bubbleImageView.frame = CGRectMake(0.0f, 0.0f, 200.0f, size.height + 40.0f);
	if(fromSelf)
		returnView.frame = CGRectMake(120.0f, 10.0f, 200.0f, size.height + 50.0f);
	else
		returnView.frame = CGRectMake(0.0f, 10.0f, 200.0f, size.height + 50.0f);
	
	[returnView addSubview:bubbleImageView];
	[bubbleImageView release];
	[returnView addSubview:bubbleText];
	[bubbleText release];
	
	return [returnView autorelease];
}

 

效果图：