我正在使用SDwebimage Framework来缓存图像,因此下载图像数量每天都在增加,因此使用应用程序3-4天后会导致缓存增加,从而导致应用程序性能下降,无论如何都要提高性能
答案 0 :(得分:0)
看一下这篇SO帖子here
您可以设置缓存持续时间的周期,然后刷新它。另外,您可以在cleanDiskWithCompletionBlock中的SDImageCache.m中使用maxCacheSize值。
// If our remaining disk cache exceeds a configured maximum size, perform a second
// size-based cleanup pass. We delete the oldest files first.
if (self.maxCacheSize > 0 && currentCacheSize > self.maxCacheSize) {
// Target half of our maximum cache size for this cleanup pass.
const NSUInteger desiredCacheSize = self.maxCacheSize / 2;
// Sort the remaining cache files by their last modification time (oldest first).
NSArray *sortedFiles = [cacheFiles keysSortedByValueWithOptions:NSSortConcurrent
usingComparator:^NSComparisonResult(id obj1, id obj2) {
return [obj1[NSURLContentModificationDateKey] compare:obj2[NSURLContentModificationDateKey]];
}];
// Delete files until we fall below our desired cache size.
for (NSURL *fileURL in sortedFiles) {
if ([_fileManager removeItemAtURL:fileURL error:nil]) {
NSDictionary *resourceValues = cacheFiles[fileURL];
NSNumber *totalAllocatedSize = resourceValues[NSURLTotalFileAllocatedSizeKey];
currentCacheSize -= [totalAllocatedSize unsignedIntegerValue];
if (currentCacheSize < desiredCacheSize) {
break;
}
}
}
}
答案 1 :(得分:0)
您只需为SDImageCache的共享实例设置全局缓存值。
只需在AppDelegate上调用以下内容:
// limit SDImage cache to 50 MGB
SDImageCache.shared().config.maxCacheSize = 1_000_000 * 50