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我在日志中收到此警告：“警告 - 无法获取对象 ID”。我已经搜索了网络，但我找不到任何提及它。当我拍摄屏幕图像并将其添加到模拟器照片库时，就会发生这种情况。

图像保存正常，所以没有伤害，但我不喜欢我不为自己创建的消息..

有谁知道是什么意思？

这是捕获屏幕图像的代码：

-(void)captureToPhotoAlbum {
    //NSLog(@"%s", __FUNCTION__);


    // Get image to save
    CGImageRef screen = UIGetScreenImage();
    UIImage *img = [UIImage imageWithCGImage:screen];

    //Test for Retina display:  
    if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] && [[UIScreen mainScreen] scale] == 2.0) {
        // Retina
        // Image cropping This is the size of the saved image.
        CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], CGRectMake(0.0f, 230.0f, 1536.0f, 1640.0f));
        UIImage *img2Save = [UIImage imageWithCGImage:imageRef];
        CGImageRelease(imageRef);
        // Request to save the image to camera roll
        UIImageWriteToSavedPhotosAlbum(img2Save, self, nil, nil);

    } else {
        //Non Retina
        // Image cropping This is the size of the saved image.
        CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], CGRectMake(0.0f, 115.0f, 768.0f, 820.0f));
        UIImage *img2Save = [UIImage imageWithCGImage:imageRef];
        CGImageRelease(imageRef);
        // Request to save the image to camera roll
        UIImageWriteToSavedPhotosAlbum(img2Save, self, nil, nil);
    }

}

控制台输出：

Apr 30 20:29:52 Davids-MacPro.local AppName[25159] <Warning>: Unable to get object ID.
Apr 30 20:29:52 Davids-MacPro.local AppName[25159] <Warning>: Unable to get object ID.
Apr 30 20:29:52 Davids-MacPro.local AppName[25159] <Warning>: Unable to get object ID.
Apr 30 20:29:52 Davids-MacPro.local AppName[25159] <Warning>: Unable to get object ID.
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1 回答 1

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我要把这个写下来。似乎只有在模拟器上运行时才会出现警告。在设备上运行时没有警告。

于 2012-05-02T05:06:28.523 回答