iOS清除所有缓存的实例代码
本文介绍了iOS清除所有缓存的实例代码，分享给大家，具体如下：
计算缓存
NSString*libPath=NSSearchPathForDirectoriesInDomains(NSLibraryDirectory,NSUserDomainMask,YES)[0];
CGFloatfileSize=[selffolderSizeAtPath:libPath];
-(float)folderSizeAtPath:(NSString*)folderPath{
NSFileManager*manager=[NSFileManagerdefaultManager];
if(![managerfileExistsAtPath:folderPath])return0;
NSEnumerator*childFilesEnumerator=[[managersubpathsAtPath:folderPath]objectEnumerator];
NSString*fileName;
longlongfolderSize=0;
while((fileName=[childFilesEnumeratornextObject])!=nil){
NSString*fileAbsolutePath=[folderPathstringByAppendingPathComponent:fileName];
folderSize+=[selffileSizeAtPath:fileAbsolutePath];
}
returnfolderSize/(1024.0*1024.0);
}
-(longlong)fileSizeAtPath:(NSString*)filePath{
NSFileManager*manager=[NSFileManagerdefaultManager];
if([managerfileExistsAtPath:filePath]){
return[[managerattributesOfItemAtPath:filePatherror:nil]fileSize];
}
return0;
}
清除缓存
-(void)action:(id)sender
{
NSArray*paths=NSSearchPathForDirectoriesInDomains(NSLibraryDirectory,NSUserDomainMask,YES);
NSString*path=[pathslastObject];
NSArray*files=[[NSFileManagerdefaultManager]subpathsAtPath:path];
for(NSString*pinfiles){
NSError*error;
NSString*Path=[pathstringByAppendingPathComponent:p];
if([[NSFileManagerdefaultManager]fileExistsAtPath:Path]){
//清理缓存，保留Preference，里面含有NSUserDefaults保存的信息
if(![PathcontainsString:@"Preferences"]){
[[NSFileManagerdefaultManager]removeItemAtPath:Patherror:&error];
}
}else{
}
}
}
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