iphone - UISearchBar 文本字段中的自定义清除按钮

Question

我试过:

UITextField *searchtextfield = [searchBar.subviews objectAtIndex:1];
    UIButton *cButton = [UIButton buttonWithType:UIButtonTypeCustom];
    cButton.frame = CGRectMake(0, 0, 20 , 20);
    cButton.backgroundColor = [UIColor clearColor];
    [cButton setImage:[UIImage imageNamed:@"x-button"] forState:UIControlStateNormal];//your button image.
    cButton.contentMode = UIViewContentModeScaleToFill;
    [cButton addTarget:self action:@selector(xButtonPressed) forControlEvents:UIControlEventTouchUpInside];//This is the custom event
    [searchtextfield setRightView:cButton];
    [searchtextfield setRightViewMode:UITextFieldViewModeWhileEditing];

但是效果不是很好...它显示自定义按钮，但是当您键入内容时，旧按钮又回来了...

我该怎么做？

Answer 1

如果你想在 UISearchBar 中设置一个自定义清除按钮试试这个:

[[UISearchBar appearance] setImage:[UIImage imageNamed:@"MyClearButton.png"] forSearchBarIcon:UISearchBarIconClear state:UIControlStateNormal];

不要忘记为 UIControlStateHighlighted 设置图像

[[UISearchBar appearance] setImage:[UIImage imageNamed:@"HighlightedClearButton.png"] forSearchBarIcon:UISearchBarIconClear state:UIControlStateHighlighted];