我正在使用 ZipArchive 并正在从设备中读取数据。我想要做的是从设备中获取数据并解压缩。我能找到的唯一示例是获取数据，将其写入 iOS 设备上的文件，然后再次读取（解压缩）它......
这是我将其写入磁盘的代码（不起作用）...
// Read the data in...
if ((recvStringLen = recvfrom(connectSock, recvString, 1025, 0, (struct sockaddr *)&broadcastAddr, &recvStringLen)) < 0) {
NSLog(@"ERROR: Unable to receive user perms message.");
[self showTimeoutError];
return -1;
}
// get the file size...
unsigned int fileSize = (( recvString[16] << 24 ) & 0xff000000) |
(( recvString[17] << 16 ) & 0xff0000) |
(( recvString[18] << 8 ) & 0xff00 ) |
( recvString[19] & 0xff );
NSLog(@"fileSize: %i", fileSize);
recvString[20+fileSize] = '\0'; // terminate the string...
// convert the char data to a string
NSString *stringData = [[[NSString alloc] initWithFormat:@"%s", &recvString[20]] autorelease];
NSData *data = [[[NSData alloc] initWithBytes:stringData length:fileSize] autorelease];
// write the data...
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *appFile = [documentsDirectory stringByAppendingPathComponent:@"userinfo.zip"];
[data writeToFile:appFile atomically:YES];
// exist?
BOOL zipExists = [[NSFileManager defaultManager] fileExistsAtPath:appFile];
NSString *zipFilePath = [documentsDirectory stringByAppendingPathComponent:@"userinfo.zip"];
NSString *output = [documentsDirectory stringByAppendingPathComponent:@"userinfo.dat"];
ZipArchive* za = [[ZipArchive alloc] init];
// unzip it...
BOOL success = [za UnzipOpenFile:zipFilePath];
if( success ) {
BOOL outSuccess = [za UnzipFileTo:output overWrite:YES];
if( outSuccess != NO ) {
NSLog(@"success");
}
[za UnzipCloseFile];
}
[za release];
BOOL datExists = [[NSFileManager defaultManager] fileExistsAtPath:output];
当它“成功”时，它总是“否”……即使“zipExists”是“是”。
我有两个问题： 1. 我没有成功将数据写入磁盘，读回并解压缩。2.我宁愿只是解压缩数据（NSData）而不是通过将其写入磁盘并再次读取它......
发帖前搜了一下，没找到解决办法。。。