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    // Home路径
    NSString *homePath = NSHomeDirectory();
 
    // Caches路径
    NSArray *caches = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
    NSString *cachesPath = [caches firstObject];
 
    // Documents路径
    NSArray *documents = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsPath = [documents firstObject];
 
    // Tmp路径
    NSString *tmp = NSTemporaryDirectory();
 
 
    // 数组读写操作
    NSArray *array = @[@"a",@"b"];
    // 1、设置文件路径
    NSString *arrayPath = [documentsPath stringByAppendingPathComponent:@"array.plist"];
    // 2、写入文件
    [array writeToFile:arrayPath atomically:YES];
    // 3、从文件获取数据
    NSArray *getArray = [NSArray arrayWithContentsOfFile:arrayPath];
    // 4、输出打印
    NSLog(@"%@", getArray);
 
    // 字典读写操作
    NSDictionary *dict = @{@"1":@"one", @"2":@"two"};
    NSString *dictPath = [documentsPath stringByAppendingPathComponent:@"dict.plist"];
    [dict writeToFile:dictPath atomically:YES];
    NSDictionary *getDict = [NSDictionary dictionaryWithContentsOfFile:dictPath];
    NSLog(@"%@", getDict);
 
    // 字符串读写操作
    NSString *string = @"小龙虾论坛地址：www.yusian.com";
    NSString *strPath = [documentsPath stringByAppendingPathComponent:@"string.txt"];
    [string writeToFile:strPath atomically:YES encoding:NSUTF8StringEncoding error:nil];
    NSString *getStr = [NSString stringWithContentsOfFile:strPath encoding:NSUTF8StringEncoding error:nil];
    NSLog(@"%@", getStr);
 
    // 图片读写操作
    UIImage *image = [UIImage imageNamed:@"001.jpg"];
    // 图片一般存储在Caches目录
    NSString *imagePath = [cachesPath stringByAppendingPathComponent:@"001.jpg"];
    // 图片不直接存储，需压缩成Data格式
    NSData *imageData = UIImageJPEGRepresentation(image, 0.1);
    // 写入本地沙盒
    [imageData writeToFile:imagePath atomically:YES];
    // 获取图片
    UIImage *getImage = [UIImage imageWithContentsOfFile:imagePath];

// Home路径 NSString *homePath = NSHomeDirectory(); // Caches路径 NSArray *caches = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); NSString *cachesPath = [caches firstObject]; // Documents路径 NSArray *documents = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsPath = [documents firstObject]; // Tmp路径 NSString *tmp = NSTemporaryDirectory(); // 数组读写操作 NSArray *array = @[@"a",@"b"]; // 1、设置文件路径 NSString *arrayPath = [documentsPath stringByAppendingPathComponent:@"array.plist"]; // 2、写入文件 [array writeToFile:arrayPath atomically:YES]; // 3、从文件获取数据 NSArray *getArray = [NSArray arrayWithContentsOfFile:arrayPath]; // 4、输出打印 NSLog(@"%@", getArray); // 字典读写操作 NSDictionary *dict = @{@"1":@"one", @"2":@"two"}; NSString *dictPath = [documentsPath stringByAppendingPathComponent:@"dict.plist"]; [dict writeToFile:dictPath atomically:YES]; NSDictionary *getDict = [NSDictionary dictionaryWithContentsOfFile:dictPath]; NSLog(@"%@", getDict); // 字符串读写操作 NSString *string = @"小龙虾论坛地址：www.yusian.com"; NSString *strPath = [documentsPath stringByAppendingPathComponent:@"string.txt"]; [string writeToFile:strPath atomically:YES encoding:NSUTF8StringEncoding error:nil]; NSString *getStr = [NSString stringWithContentsOfFile:strPath encoding:NSUTF8StringEncoding error:nil]; NSLog(@"%@", getStr); // 图片读写操作 UIImage *image = [UIImage imageNamed:@"001.jpg"]; // 图片一般存储在Caches目录 NSString *imagePath = [cachesPath stringByAppendingPathComponent:@"001.jpg"]; // 图片不直接存储，需压缩成Data格式 NSData *imageData = UIImageJPEGRepresentation(image, 0.1); // 写入本地沙盒 [imageData writeToFile:imagePath atomically:YES]; // 获取图片 UIImage *getImage = [UIImage imageWithContentsOfFile:imagePath];