iOS開發總結之沙盒儲存
阿新 • • 發佈：2019-02-19
1、獲取程式的Home目錄
NSString *path = NSHomeDirectory();
NSLog(@"path:%@",path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A
真機上的目錄是：
/var/mobile/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2
可見，真機上的目錄是/var/mobile/Applications/這個目錄下的，和模擬器不一樣。這個是Home目錄，其他的子目錄和模擬器一樣。
2、獲取Document目錄
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSLog(@"path:%@", path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A/Documents
3、獲取Cache目錄
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSLog(@"path:%@", path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A/Library/Caches
4、獲取Library目錄
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSLog(@"path:%@", path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A/Library
5、獲取Tmp目錄
NSString *path = NSTemporaryDirectory();
NSLog(@"%@", path);
列印結果：
path:/var/folders/hj/8sgyk0f555l1z_n95p2b2kp00000gn/T/
6、寫入檔案
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *docDir = [paths objectAtIndex:0];
if(!docDir) {
NSLog(@"Documents 目錄未找到");
}
NSArray *array = [[NSArray alloc] initWithObjects:@"內容",@"content",nil];
NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"];
[array writeToFile:filePath atomically:YES];
7、讀取檔案
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *docDir = [paths objectAtIndex:0];
NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"];
NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];
NSLog(@"%@",array);
NSString *path = NSHomeDirectory();
NSLog(@"path:%@",path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A
真機上的目錄是：
/var/mobile/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2
可見，真機上的目錄是/var/mobile/Applications/這個目錄下的，和模擬器不一樣。這個是Home目錄，其他的子目錄和模擬器一樣。
2、獲取Document目錄
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSLog(@"path:%@", path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A/Documents
3、獲取Cache目錄
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSLog(@"path:%@", path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A/Library/Caches
4、獲取Library目錄
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSLog(@"path:%@", path);
列印結果：
path:/Users/username/Library/Application Support/iPhone Simulator/5.1/Applications/BAE91297-A4C6-4DDC-A9DA-7B790B36CE7A/Library
5、獲取Tmp目錄
NSString *path = NSTemporaryDirectory();
NSLog(@"%@", path);
列印結果：
path:/var/folders/hj/8sgyk0f555l1z_n95p2b2kp00000gn/T/
6、寫入檔案
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *docDir = [paths objectAtIndex:0];
if(!docDir) {
NSLog(@"Documents 目錄未找到");
}
NSArray *array = [[NSArray alloc] initWithObjects:@"內容",@"content",nil];
NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"];
[array writeToFile:filePath atomically:YES];
7、讀取檔案
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *docDir = [paths objectAtIndex:0];
NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"];
NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];
NSLog(@"%@",array);