NSURL *url=[NSURL URLWithString:[self.friendsHeadList objectAtIndex:indexPath.row]];
NSData *imageData=[NSData dataWithContentsOfURL:url];
UIImage *image=[UIImage imageWithData:imageData];
NSURL *url=[NSURL URLWithString:[self.friendsHeadList objectAtIndex:indexPath.row]];
NSData *imageData=[NSData dataWithContentsOfURL:url];
UIImage *image=[UIImage imageWithData:imageData];
-(NSString *)dataFilePath//用來返回數據文件的完整路徑名 { NSArray *path = NSSearchPa
使用navigationItem時,首先要確保UINavigationController視圖已經加載到ViewController中。其代碼爲: