pad点餐系统 内存管理的一点总结

1、向系统申请的view button array 等资源一定要及时释放。尤其是img图片，更要及时释放。

2、在pad点餐系统中使用如下方法释放view资源，真是太有必要了。

//设置按钮状态及清空视图            
-(void)clearSmallOrderList:(NSString *)code
{
    NSLog(@"进入OrderListViewController.m的-(void)clearSmallOrderList:(NSString *)code");
    for (id obj in [self.view subviews]) {
        if ([obj isKindOfClass:[UIButton class]]) {
            UIButton* theButton = (UIButton*)obj;
            if ([code isEqualToString:@"000"]&&theButton.tag==1) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"001"]&&theButton.tag==2) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"002"]&&theButton.tag==3) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"003"]&&theButton.tag==4) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"004"]&&theButton.tag==5) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"005"]&&theButton.tag==0) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"006"]&&theButton.tag==6) {
                [theButton setSelected:YES];
            }else{
                [theButton setSelected:NO];
            }
        }else if([obj isKindOfClass:[UIView class]]){
            UIView *view = (UIView *)obj;
            if(view.tag==9999||view.tag==9998||view.tag==9997||view.tag==9996){
                [view removeFromSuperview];
                [view release];
            }
        }
    }
}
//设置按钮状态及清空视图                            
-(void)clearOrderList:(NSString *)code Title:(NSString *)title
{
    NSLog(@"进入OrderListViewController.m的-(void)clearOrderList:(NSString *)code Title:(NSString *)title");
    for (id obj in [self.view subviews]) {
        if ([obj isKindOfClass:[UIButton class]]) {
            UIButton* theButton = (UIButton*)obj;
            if ([code isEqualToString:@"000"]&&theButton.tag==1) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"001"]&&theButton.tag==2) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"002"]&&theButton.tag==3) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"003"]&&theButton.tag==4) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"004"]&&theButton.tag==5) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"005"]&&theButton.tag==0) {
                [theButton setSelected:YES];
            }else if ([code isEqualToString:@"006"]&&theButton.tag==6) {
                [theButton setSelected:YES];
            }else if ([theButton.titleLabel.text isEqualToString:title]) {
                [theButton setSelected:YES];
            }else
                [theButton setSelected:NO];
        }else if([obj isKindOfClass:[UIView class]]){
            UIView *view = (UIView *)obj;
            if(view.tag==9999||view.tag==9997||view.tag==9996){
                [view removeFromSuperview];
                [view release];
            }
        }
    }
}