ios如何在一個UIImageButton的裡面加一些自訂的箭頭

可以採用如下方法，寫一個函數：

-(UIImage*) getOneImageButtonWithArrow{    //tmpView做附控制項    UIView *tmpView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 38.0f, 32.0f)];tmpView.backgroundColor = [UIColor clearColor];        //bgImg作為背景    UIImage* bgImg = [UIImage imageNamed:@"background.png"];    UIImageView *bgImageView = [[UIImageView alloc] initWithImage:bgImg];bgImageView.frame = tmpView.frame;        //加入tmpView[tmpView addSubview:bgImageView];[bgImageView release];    //裡面的icon    UIImageView *tmpImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"icon.png"]];    tmpImageView.frame = CGRectMake(4.0f, 4.0f, 24.0f, 24.0f);tmpImageView.backgroundColor = [UIColor clearColor];tmpImageView.alpha = 1.0f;[tmpView addSubview:tmpImageView];        //箭頭    UIImage *arrowImage = [UIImage imageNamed:@"arrow.png"];    UIImageView *arrowImageView = [[UIImageView alloc] initWithImage:arrowImage];arrowImageView.frame = CGRectMake(28.0f, 4.0f, 6.0f, 24.0f);[tmpView addSubview:arrowImageView];        //擷取上下文，得到這個UIImage    UIGraphicsBeginImageContextWithOptions(tmpView.bounds.size, NO, 0.0);    [tmpView.layer renderInContext:UIGraphicsGetCurrentContext()];UIImage *tmpImage = UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();return tmpImage;}