iOS文件管理

- (void)_getSandBoxPath {

NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);

NSString*cachesPath = [pathArray firstObject];

NSFileManager *fileManger = [NSFileManager defaultManager];

//创建文件夹

NSString *dataPath = [cachesPath stringByAppendingPathComponent:@"HomeListData"];

NSError *createError;

[fileManger createDirectoryAtPath:dataPath withIntermediateDirectories:YES attributes:nil error:&createError];

//创建文件

NSString *listDataPath = [dataPath stringByAppendingPathComponent:@"listData"];

NSData *listData = [@"abc" dataUsingEncoding:NSUTF8StringEncoding];

[fileManger createFileAtPath:listDataPath contents:listData attributes:nil];

//查询文件

__unused BOOL isExist = [fileManger fileExistsAtPath:listDataPath];

// if (isExist) {

// [fileManger removeItemAtPath:listDataPath error:nil];

// }

//更新文件

NSFileHandle *fileHandle = [NSFileHandle fileHandleForUpdatingAtPath:listDataPath];

[fileHandle seekToEndOfFile];

[fileHandle writeData:[@"def" dataUsingEncoding:NSUTF8StringEncoding] error:nil];

[fileHandle synchronizeFile];

[fileHandle closeFile];

}