沙盒存储

#pragma mark 文件是否存在

NSFileManager *fileManager=[NSFileManager defaultManager];

if ([fileManager fileExistsAtPath:filePath]) {}

#pragma mark 获取沙盒路径

NSString *path=NSHomeDirectory();

#pragma mark 获取Documents路径

NSArray *docPaths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *path=[docPaths lastObject];

#pragma mark 获取Library路径

NSArray *docPaths=NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);

NSString *path=[docPaths lastObject];

#pragma mark 获取tmp路径

NSString *path=NSTemporaryDirectory();

#pragma mark 在Documents里面创建一个“测试”的文件夹

NSString *path=[self getDocumentsPath];

path=[path stringByAppendingPathComponent:@"测试"];

NSFileManager *fileManager=[NSFileManager defaultManager];

BOOL ret=[fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];

if (ret) {

NSLog(@"文件夹创建成功");

}else{

NSLog(@"文件夹创建失败");

}

}

#pragma mark 在“测试”的文件夹创建一个“测试.txt”的文件并写入“哈哈哈哈哈哈哈哈”

-(void)writeFile{

NSString *path=[self getDocumentsPath];

path=[path stringByAppendingPathComponent:@"测试"];

if ([self isFile:path]) {

path=[path stringByAppendingPathComponent:@"测试.txt"];

NSString *content=@"哈哈哈哈哈哈哈哈";

BOOL ret=[content writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];

if (ret) {

NSLog(@"文件写入成功");

}else{

NSLog(@"文件写入失败");

}

}else{

NSFileManager *fileManager=[NSFileManager defaultManager];

BOOL ret=[fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];

if (ret) {

NSLog(@"文件夹创建成功");

[self writeFile];

}else{

NSLog(@"文件夹创建失败");

}

}

}

#pragma mark 在“测试.txt”的文件续写入“啊啊啊啊啊啊啊”

-(void)addMoreFile{

NSString *path=[self getDocumentsPath];

path=[path stringByAppendingPathComponent:@"测试"];

path=[path stringByAppendingPathComponent:@"测试.txt"];

if ([self isFile:path]) {

//打开文件

NSFileHandle *fileHandle=[NSFileHandle fileHandleForUpdatingAtPath:path];

[fileHandle seekToEndOfFile];

NSString *content=@"啊啊啊啊啊啊啊";

NSData *data=[content dataUsingEncoding:NSUTF8StringEncoding];

[fileHandle  writeData:data];

//关闭文件

[fileHandle closeFile];

}else{

NSLog(@"文件不存在");

}

}

#pragma mark 删除文件"测试.txt"

-(void)deleteFile{

NSString *path=[self getDocumentsPath];

path=[path stringByAppendingPathComponent:@"测试"];

path=[path stringByAppendingPathComponent:@"测试.txt"];

if ([self isFile:path]) {

NSFileManager *fileManager=[NSFileManager defaultManager];

BOOL ret=[fileManager removeItemAtPath:path error:nil];

if (ret) {

NSLog(@"文件删除成功");

}else{

NSLog(@"文件删除失败");

}

}else{

NSLog(@"文件不存在");

}

}

#pragma mark 实例在Documents创建一个image的文件夹，并将图片存进去

-(void)writeImage{

NSString *path=[self getDocumentsPath];

path=[path stringByAppendingPathComponent:@"image"];

NSFileManager *fileManager=[NSFileManager defaultManager];

BOOL ret=[fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];

if (ret) {

UIImage *image=[UIImage imageNamed:@"IMG_0641.JPG"];

NSData *imageData=UIImageJPEGRepresentation(image, 1);

path=[path stringByAppendingPathComponent:@"IMG_0641.JPG"];

BOOL ret=[imageData writeToFile:path atomically:YES];

if (ret) {

NSLog(@"图片存入成功");

}else{

NSLog(@"图片存入失败");

}

}else{

NSLog(@"文件夹创建失败");

}

}