在ios沙盒机制下，哪个文件夹用来存放数据

发布网友发布时间：2022-04-22 13:34

共1个回答

热心网友时间：2023-06-23 18:29

IOS 从Resource文件夹下Copy文件到沙盒
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.title = @"拷贝文件到Sandbox";

//文件类型
NSString * docPath = [[NSBundle mainBundle] pathForResource:@"save1" ofType:@"dat"];

// 沙盒Documents目录
// NSString * appDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];

// 沙盒Library目录
NSString * appDir = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];
//appLib Library/Caches目录
NSString *appLib = [appDir stringByAppendingString:@"/Caches"];

BOOL filesPresent = [self copyMissingFile:docPath toPath:appLib];
if (filesPresent) {
NSLog(@"OK");
}
else
{
NSLog(@"NO");
}

// 创建文件夹
NSString *createDir = [NSHomeDirectory() stringByAppendingString:@"/test"];
[self createFolder:createDir];

// 把文件拷贝到Test目录
BOOL filesPresent1 = [self copyMissingFile:docPath toPath:createDir];
if (filesPresent1) {
NSLog(@"OK");
}
else
{
NSLog(@"NO");
}

}

/**
* @brief 把Resource文件夹下的save1.dat拷贝到沙盒
*
* @param sourcePath Resource文件路径
* @param toPath 把文件拷贝到XXX文件夹
*
* @return BOOL
*/
- (BOOL)copyMissingFile:(NSString *)sourcePath toPath:(NSString *)toPath
{
BOOL retVal = YES; // If the file already exists, we'll return success…
NSString * finalLocation = [toPath stringByAppendingPathComponent:[sourcePath lastPathComponent]];
if (![[NSFileManager defaultManager] fileExistsAtPath:finalLocation])
{
retVal = [[NSFileManager defaultManager] copyItemAtPath:sourcePath toPath:finalLocation error:NULL];
}
return retVal;
}

/**
* @brief 创建文件夹
*
* @param createDir 创建文件夹路径
*/
- (void)createFolder:(NSString *)createDir
{
BOOL isDir = NO;
NSFileManager *fileManager = [NSFileManager defaultManager];
BOOL existed = [fileManager fileExistsAtPath:createDir isDirectory:&isDir];
if ( !(isDir == YES && existed == YES) )
{
[fileManager createDirectoryAtPath:createDir withIntermediateDirectories:YES attributes:nil error:nil];
}
}