iOS 沙盒路径获取,创建文件

沙盒下主要有四个文件夹:document,caches,tmp,library

document 的路径 程序运行时生成的文件,这个文件不要存比较放大的文件,比如音频,视频类,因为这里的东西会被上传

caches 的路径 一般用于文件的下载,存储(不会被上传)

tmp 临时文件.程序结束后应该清空

沙盒文件夹路径获取:

获取沙盒路径:

NSString *sandBoxPath = NSHomeDirectory();

获取 document :

NSString *documentPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];

获取 caches 路径:

NSString *cacherPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];

获取 tmp 路径:

NSString *tmpPath = NSTemporaryDirectory();

在沙盒下创建文件:

1.获取路径

2.拼接文件名(包括后缀)

3.将内容写到文件

例:写一个 txt 文件:

//NSString 写入
    
    NSString *str = @"二傻子";
    
    //获取 document 路径
    NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
    
    //拼接上一个 txt 文件
    NSString *filePath = [docPath stringByAppendingPathComponent:@"coco.txt"];
    
    //吧字符串写到 txt 文件
    [str writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil];

例:写一个 array 文件:

//NSArray
    
    NSArray *array = @[@"二傻子",@"三傻子",@"翠花",@"叶良岑",@"赵日天",@"王尼玛"];
    
    NSString *tmpPath1 = NSTemporaryDirectory();
    
    NSString *tmpFilePath = [tmpPath1 stringByAppendingPathComponent:@"tmp.plist"];
    
    [array writeToFile:tmpFilePath atomically:YES];

例:写一个 dictionary 文件:

NSDictionary *dic = @{@"1号":@"XXXXX",@"2号":@"XXXXX",@"3号":@"XXXXX",@"4号":@"XXXXX",@"5号":@"XXXXX"};
    
NSString *dicPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *dicFilePath = [dicPath stringByAppendingPathComponent:@"dic.plist"];
    
[dic writeToFile:dicFilePath atomically:YES];

例:写一个 image 文件:

NSString *cacherPath2 = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
    
NSString *imgFilePath = [cacherPath2 stringByAppendingPathComponent:@"123.png"];
5 NSData *data = [[NSData alloc]initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"1" ofType:@"png"]];
    
[data writeToFile:imgFilePath atomically:YES];