iOS5的webView已经有磁盘缓存了

iOS5的webView磁盘缓存默认是20M,可以进行修改.或者覆盖缓存策略.

NSURLCache* testCache = [[NSURLCache alloc]initWithMemoryCapacity:1024*1024*20 diskCapacity:1024*1024*50 diskPath:@"mead.db"];
[NSURLCache setSharedURLCache:testCache];

unsigned int diskCapacity = testCache.diskCapacity;
NSLog(@"my diskCapacity=%d",diskCapacity);

[testCache setDiskCapacity:1024*1024*50];
diskCapacity = testCache.diskCapacity;
NSLog(@"after setting diskCapacity=%d",diskCapacity);

diskCapacity = testCache.currentDiskUsage;
NSLog(@" currentDiskUsage=%d",diskCapacity);

diskCapacity = testCache.currentMemoryUsage;
NSLog(@" currentMemoryUsage=%d",diskCapacity);