Question

我是ios编程的新手，当我的应用程序运行时，我正在接受这些错误。我在我的应用程序中加载了950多张图片，我正在使用ARC。

ImageIO：CGImageRead_mapData'open' failed'/ Users / apple / Library / Application Support / iPhone Simulator / 6.1 / Applications / 16551664-4694-4742-85DC-2C3C0ADC5289 / demo.app / menu-24-20.png'错误= 24（打开的文件太多）

ImageIO：CGImageRead_mapData'open' failed'/ Users / apple / Library / Application Support / iPhone Simulator / 6.1 / Applications / 16551664-4694-4742-85DC-2C3C0ADC5289 / demo.app / menu-24-20.png'错误= 24（打开的文件太多）

ImageIO：CGImageRead_mapData'open' failed'/ Users / apple / Library / Application Support / iPhone Simulator / 6.1 / Applications / 16551664-4694-4742-85DC-2C3C0ADC5289 / demo.app / circle_green.png'            错误= 24（打开的文件太多）

ImageIO：CGImageRead_mapData'open' failed'/ Users / apple / Library / Application Support / iPhone Simulator / 6.1 / Applications / 16551664-4694-4742-85DC-2C3C0ADC5289 / demo.app / circle_green.png'            错误= 24（打开的文件太多）

ImageIO：CGImageRead_mapData'open' failed'/ Users / apple / Library / Application Support / iPhone Simulator / 6.1 / Applications / 16551664-4694-4742-85DC-2C3C0ADC5289 / demo.app / shopping_cart_1-512.png'            错误= 24（打开的文件太多）

ImageIO：CGImageRead_mapData'open' failed'/ Users / apple / Library / Application Support / iPhone Simulator / 6.1 / Applications / 16551664-4694-4742-85DC-2C3C0ADC5289 / demo.app / shopping_cart_1-512.png'            错误= 24（打开的文件太多）

此代码块是我的应用程序的一部分。

                while(sqlite3_step(compiledStatement) == SQLITE_ROW)  {
                    int UrunId = sqlite3_column_int(compiledStatement,0);
                    //NSString *urunNo= [NSString stringWithFormat:@"%i",UrunId];
                    UrunAdi = [NSString stringWithUTF8String:(char*)sqlite3_column_text(compiledStatement, 1)];
                    NSString *imageName= [NSString stringWithUTF8String:(char*)sqlite3_column_text(compiledStatement, 2)];
                    UIImageView *background = [[UIImageView alloc]initWithFrame:CGRectMake(column*197+30, row*350, 175, 280)];

                    NSString *filePathBackGround = [[NSBundle mainBundle] pathForResource:@"BackImage" ofType:@"png"];
                    NSData *myData = [NSData dataWithContentsOfFile:filePathBackGround];                        
                    UIImage *blackBackGround = [UIImage imageWithData:myData];

                    [background setImage:blackBackGround];                                            
                    [scrollView addSubview:background];



                    NSString *filePathSepeteEkleButton = [[NSBundle mainBundle] pathForResource:@"sepeteEkleButtonImage" ofType:@"png"];
                    NSData *myDataButton = [NSData dataWithContentsOfFile:filePathSepeteEkleButton];

                    UIImage *sepeteEkleButtonImage = [UIImage imageWithData:myDataButton];
                    UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
                    [button setFrame:CGRectMake(column*197+38 , row*350+8, 159, 45)];
                    [button setImage:sepeteEkleButtonImage forState:UIControlStateNormal];
                    [button addTarget:self
                               action:@selector(addToChart:)
                     forControlEvents:UIControlEventTouchUpInside];
                    button.tag = UrunId;



                    UILabel *buttonLabel=[[UILabel alloc]initWithFrame:CGRectMake(column*197+43,row*350+20,200,20)];
                    buttonLabel.textColor = [UIColor whiteColor];
                    buttonLabel.backgroundColor=[UIColor clearColor];
                    buttonLabel.text=UrunAdi;

                    [scrollView addSubview:button];

                    [scrollView addSubview:buttonLabel];


                    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                    NSString *documentsPath = [paths objectAtIndex:0]; //Get the docs directory
                    NSString *filePath = [documentsPath stringByAppendingPathComponent:imageName];

                    NSData *pngData = [NSData dataWithContentsOfFile:filePath];
                    if (pngData == nil) {
                        NSString *filePathResimYok= [[NSBundle mainBundle] pathForResource:@"resimYok" ofType:@"jpeg"];
                        NSData *myDataResimYok= [NSData dataWithContentsOfFile:filePathResimYok];
                        image2 = [UIImage imageWithData:myDataResimYok];//horoda
                    }else{
                        image2 = [UIImage imageWithData:pngData];
                    }
                    image2=[image2 imageByScalingAndCroppingForSize:CGSizeMake(175, 210)];

                    //UIImage *urunDetayImage = [UIImage imageNamed:image2];
                    UIButton * urunDetayButton = [UIButton buttonWithType:UIButtonTypeCustom];
                    [urunDetayButton setFrame:CGRectMake(column*197+38 , row*350+58, 159, 170)];
                    [urunDetayButton setImage:image2 forState:UIControlStateNormal];
                    [urunDetayButton addTarget:self
                                        action:@selector(buttonClicked:)
                              forControlEvents:UIControlEventTouchUpInside];
                    urunDetayButton.tag = UrunId;
                    [scrollView addSubview:urunDetayButton];

                    UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(column*197+38,row*350+245,200,20)];
                    label.textColor = [UIColor whiteColor];
                    label.backgroundColor=[UIColor clearColor];
                    label.text=UrunAdi;
                    [scrollView addSubview:label];

我想修复3天。请帮帮我。感谢。

Answer 1

据我所知，你的代码看起来很好，并且在模拟器（大量内存）中运行应该可以正常工作。一些建议：

1）使用dataWithContentsOfFile:options:error:而不是dataWithContentsOfFile:，使用NSDataReadingUncached选项（以减少系统上的内存压力），并测试返回值 - 如果没有记录错误并更新您的问题。< / p>

2）您始终可以将数据映像转储到NSCache对象中，如果系统需要内存，它将释放缓存项，您必须从文件系统重新读取映像。即使您一次只拉几张图像，也可以使用此技术。

3）您可以使用UIImage imageWithContentsOfFile:而不是获取数据然后创建图像。在这种情况下，将UIImage本身放在缓存中，并使用其名称的密钥。

Answer 2

从X-Code 10开始，Apple并未像以前那样动态删除所有NSCache实例。因此，作为开发人员，我们需要退出模拟器应用程序并运行构建，以使构建成功。

iOS打开文件太多

2 个答案: