当iphone在loading比较多数据时，怎么样让窗口显示等待图标
[[CCDirector sharedDirector]UIActivityIndicatorView *activityIndicator= [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 32.0f,32.0f)]; [activityIndicator setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleGray]; [contentView addSubview:activityIndicator]; [activityIndicator startAnimating]; //loading data.....[activityIndicator stopAnimating];[activityIndicator release];
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