[Object-c] UISearchBar 上"Cancel"按鈕改為”取消“__修改cancel按鈕

目的: 修改 UISearchBar上"Cancel"按鈕改為”取消“ 並且修改cancel按鈕的顏色,字, 字型 理論:     只有通過擷取 searchBar 上所有view資料, 擷取數組中第一個view,就是取消按鈕.擷取到按鈕之後, 就能改變取消按鈕的任何元素.  代碼實現:

for(UIView *viewin  [[[searchBar subviews]objectAtIndex:0]subviews]) {        if([viewisKindOfClass:[NSClassFromString(@"UINavigationButton")class]]) {           UIButton * cancel =(UIButton *)view;            [cancel setTitle:@"取消"forState:UIControlStateNormal];             //修改文字顏色            [cancel setTitleColor:[UIColorwhiteColor] forState:UIControlStateNormal];            [cancel setTitleColor:[UIColorwhiteColor] forState:UIControlStateHighlighted];            // 修改按鈕背景            [cancel setBackgroundImage:[UIImageimageNamed:@"btn_cancel.png"]forState:UIControlStateNormal];            [cancel setBackgroundImage:nilforState:UIControlStateHighlighted];        }    }