iOS 文件读写

向 cache 文件夹中添加 words.plist 文件，并写入 String 数组

- (void)writeArrayToFile {
    NSArray *array = @[@"a", @"b", @"c"];
    
    NSString *cachePatch = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
    
    NSString *filePath = [cachePatch stringByAppendingPathComponent:@"myFile.plist"];
    NSLog(@"filePath: %@", filePath);
    
    BOOL res = [array writeToFile:filePath atomically:YES];
    NSLog(@"res = %d", res);
}

从 cache 文件夹中读取 words.plist 文件中的内容

- (void)readArrayFromFile {
    NSString *cachePatch = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
    
    NSString *filePath = [cachePatch stringByAppendingPathComponent:@"myFile.plist"];
    NSLog(@"filePath: %@", filePath);
    NSArray *array = [NSArray arrayWithContentsOfFile:filePath];
    NSLog(@"array: %@", array);
}

从 Bundle 中读取 words.plist 文件中的内容

- (void)readArrayFromBunndleFile {
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"myFile" ofType:@"plist"];
    NSLog(@"filePath: %@", filePath);
    NSArray *array = [NSArray arrayWithContentsOfFile:filePath];
    NSLog(@"array: %@", array);
}

    private func getJokeListFromBundleFile() -> [String] {
    guard let filePath = Bundle.main.path(forResource: "list", ofType: "plist") else { return [] }

    guard let array = NSArray.init(contentsOfFile: filePath) else { return [] }

    guard let strArray = array as? [String] else { return [] }

    return strArray
    }

其它

可参考iOS 性能优化：优化 App 的持久化策略