iOS制作文件管理小程序

首先就viewcotroller.h和.m以及故事板删除

image.png

AppDelegate.m

@implementation AppDelegate
@synthesize window = _window;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window =[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    self.window.rootViewController = [[UINavigationController alloc]initWithRootViewController:[FilesTableViewController new]];
    [self.window makeKeyAndVisible];
    return YES;
}

新建一个tableViewController
FilesTableViewController.h

@interface FilesTableViewController : UITableViewController
@property(nonatomic,copy)NSString *path;
@end

FilesTableViewController.m

#import <AVKit/AVKit.h>
#import <AVFoundation/AVFoundation.h>
#import "FilesTableViewController.h"

@interface FilesTableViewController ()
@property(nonatomic,strong)NSMutableArray *filePaths;
@property(nonatomic,strong)AVAudioPlayer *player;
@end

@implementation FilesTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSString *path = self.path? self.path : @"/Users/zhengyang";
    self.title = [path lastPathComponent];
    self.filePaths =[NSMutableArray array];
    NSArray *fileNames = [[NSFileManager defaultManager]contentsOfDirectoryAtPath:path error:nil];
    for (NSString *fileName in fileNames) {
        if ([fileName hasPrefix:@"."]) {
            continue;
        }
        NSString *filePath = [path stringByAppendingPathComponent:fileName];
        [self.filePaths addObject:filePath];
    }
    self.navigationItem.rightBarButtonItem = self.editButtonItem;
}

#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.filePaths.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    if(!cell){
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
    }
    NSString *filePath = self.filePaths[indexPath.row];
    cell.textLabel.text = [filePath lastPathComponent];
    //判断是否是文件夹
    if ([self isDirectoryOfpath:filePath]) {
        cell.imageView.image = [UIImage imageNamed:@"QQ20201201-2.png"];
    }else{
        cell.imageView.image = [UIImage imageNamed:@"QQ20201201-0.png"];
    }
    return cell;
}
-(BOOL)isDirectoryOfpath:(NSString*)path{
    NSFileManager *fm = [NSFileManager defaultManager];
    BOOL isDir = NO;
    //方法返回值判断的是文件是否存在
    if([fm fileExistsAtPath:path isDirectory:&isDir]&&isDir){
        return YES;
    }
    return NO;
        
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    NSString *filePath = self.filePaths[indexPath.row];
    //判断是否是文件夹
    if([self isDirectoryOfpath:filePath]){
        FilesTableViewController *vc = [FilesTableViewController new];
        vc.path = filePath;
        [self.navigationController pushViewController:vc animated:YES];
    }else if([filePath hasSuffix:@"mp4"]){
        AVPlayerViewController *vc = [AVPlayerViewController new];
        vc.player = [[AVPlayer alloc]initWithURL:[NSURL fileURLWithPath:filePath]];
        [vc.player play];
        [self.navigationController pushViewController:vc animated:YES];
    }else if([filePath hasSuffix:@"jpg"]||[filePath hasSuffix:@"png"]){
        UIViewController *vc = [UIViewController new];
        vc.view.backgroundColor = [UIColor whiteColor];
        UIImageView *iv = [[UIImageView alloc]initWithFrame:self.view.bounds];
        [vc.view addSubview:iv];
        iv.image = [UIImage imageWithContentsOfFile:filePath];
        [self.navigationController pushViewController:vc animated:YES];
    }else if([filePath hasSuffix:@"mp3"]){
        self.player = [[AVAudioPlayer alloc]initWithContentsOfURL:[NSURL fileURLWithPath:filePath] error:nil];
        [self.player play];
    }else if([filePath hasSuffix:@"rxf"]||[filePath hasSuffix:@"txt"]||[filePath hasSuffix:@".h"]||[filePath hasSuffix:@".m"])
    {
        UIViewController *vc = [UIViewController new];
        vc.view.backgroundColor = [UIColor whiteColor];
        UITextView *tv = [[UITextView alloc]initWithFrame:self.view.bounds];
        [vc.view addSubview:tv];
        tv.text = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
        [self.navigationController pushViewController:vc animated:YES];
    }else{
        UIAlertController *ac = [UIAlertController alertControllerWithTitle:@"提示" message:@"目前版本暂不支持此格式，请期待下一版本！" preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
        [ac addAction:action1];
        [self presentViewController:ac animated:YES completion:nil];
    }
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        NSString *filePath = self.filePaths[indexPath.row];
        [[NSFileManager defaultManager]removeItemAtPath:filePath error:nil];
        [self.filePaths removeObject:filePath];
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
       
    }   
}

屏幕效果图可以通过APP直接播放mp3、mp4、图片、文本、删除文件（删除文件时要小心，删除了回收站也不能找回来）等

image.png