trako

摘要： 在文件xxxViewController.m中，// 添加前进按钮UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Forward2" style:UIBarButtonItemStylePlain target:self action:@selector(forwardButtonPressed:)];self.navigationItem.rightBarButtonItem = rightButton; // 隐藏返回按钮UIBarButtonItem *leftButton 阅读全文

摘要： 移除子视图两种方法方法1：for (int loop = 0; loop < [subViews count]; loop++){ UIView *subView = [subViews objectAtIndex:loop]; [subView removeFromSuperview];}方法2：NSArray *subViews = [subView subviews];if([subViews count] != 0){ [subViews makeObjectsPerformSelector:@selector(removeFromSuperview)];} 阅读全文