I m 书写一台显示UIScrollView图像(1024x1322 max)的iPad读机
每一图像在需要时(在滚动中)装在背景线上(总有3幅最大负荷的图像)。
我的问题是:当数据装上Im,更新UIImageView时,我的背景是:
image= [[UIImage alloc] initWithContentsOfFile: file];
[content setImage:image]
这似乎锁定了主线,使情报和安全局的意见交换根本无法顺利进行。
预 例
I m 书写一台显示UIScrollView图像(1024x1322 max)的iPad读机
每一图像在需要时(在滚动中)装在背景线上(总有3幅最大负荷的图像)。
我的问题是:当数据装上Im,更新UIImageView时,我的背景是:
image= [[UIImage alloc] initWithContentsOfFile: file];
[content setImage:image]
这似乎锁定了主线,使情报和安全局的意见交换根本无法顺利进行。
预 例
您应never从背景线上树立形象(或该事物的任何不动产)。 performSeleOnMainThread:withObject:wait UntilDone:
。
在你的背景中,不要使用UIImage,就这样做。
CGDataProviderRef dataProvider = CGDataProviderCreateWithFilename("file.png");
CGImageRef image = CGImageCreateWithPNGDataProvider(dataProvider, NULL, NO, kCGRenderingIntentDefault);
然后,将图像回馈到主线,然后用“UIImage 图像WithCGImage:image”制作UIImage。
希望这一帮助
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