WIFI transmission

Source code introduction: Similar to the WIFI transmission function of Duokan and iReader.

Source code effect:

Source code snippet:

 # import   "CocoaWebResourceViewController.h"   
  
 @implementation CocoaWebResourceViewController 
  
 // load file list  
 - ( void )loadFileList
 {
    [fileList removeAllObjects];
    NSString* docDir = [NSString stringWithFormat:@ "%@/Documents" , NSHomeDirectory()];
    NSDirectoryEnumerator *direnum = [[NSFileManager defaultManager]
                                      enumeratorAtPath:docDir];
 NSString *pname;
 while (pname = [direnum nextObject])
 { 
  
        [fileList addObject:pname];
 }
 } 
  
 // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.  
 - ( void )viewDidLoad {
    fileList = [[NSMutableArray alloc] init];
 [self loadFileList]; 
      
 // set up the http server  
    httpServer = [[HTTPServer alloc] init];
    [httpServer setType:@ "_http._tcp." ];
    [httpServer setPort: 8080 ];
    [httpServer setName:@ "CocoaWebResource" ];
    [httpServer setupBuiltInDocroot];
    httpServer.fileResourceDelegate = self; 
  
 [ super viewDidLoad];
 } 
  
  
 - ( void )didReceiveMemoryWarning {
    [ super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview  
 // Release anything that's not essential, such as cached data  
 } 
  
  
 - ( void )dealloc {
    httpServer.fileResourceDelegate = nil;
 [httpServer release];
 [fileList release];
 [ super dealloc];
 } 
  
 #pragma mark actions
 - (IBAction)toggleService:(id)sender
 {
 NSError *error;
 if ([(UISwitch*)sender isOn])
 {
        BOOL serverIsRunning = [httpServer start:&error];
 if (!serverIsRunning)
 {
            NSLog(@ "Error starting HTTP Server: %@" , error);
 }
        [urlLabel setText:[NSString stringWithFormat:@ "http://%@:%d" , [httpServer hostName], [httpServer port]]];
 }
 else  
 {
 [httpServer stop];
        [urlLabel setText:@ "" ];
 }
 } 
  
 #pragma mark WebFileResourceDelegate The callback method after the browser uploads the file
 // number of the files  
 - (NSInteger)numberOfFiles
 {
 return [fileList count];
 } 
  
 // the file name by the index  
 - (NSString*)fileNameAtIndex:(NSInteger)index
 { 
  
 return [fileList objectAtIndex:index];
 } 
  
 // provide full file path by given file name  
 - (NSString*)filePathForFileName:(NSString*)filename
 {
    NSString* docDir = [NSString stringWithFormat:@ "%@/Documents" , NSHomeDirectory()]; 
  
 return [NSString stringWithFormat:@ "%@/%@" , docDir, filename];
 } 
  
 // handle newly uploaded file. After uploading, the file is stored in  
 // the temporary directory, you need to implement this method to move  
 // it to proper location and update the file list.  
 - ( void )newFileDidUpload:(NSString*)name inTempPath:(NSString*)tmpPath
 {
 if (name == nil || tmpPath == nil)
 return ;
    NSString* docDir = [NSString stringWithFormat:@ "%@/Documents" , NSHomeDirectory()];
    NSString *path = [NSString stringWithFormat:@ "%@/%@" , docDir, name];
    NSFileManager *fm = [NSFileManager defaultManager];
 NSError *error; 
  
 if (![fm moveItemAtPath:tmpPath toPath:path error:&error])
 {
        NSLog(@ "can not move %@ to %@ because: %@" , tmpPath, path, error );
 } 
          
 [self loadFileList]; 
      
 } 
  
 // implement this method to delete requested file and update the file list  
 - ( void )fileShouldDelete:(NSString*)fileName
 { 
  
    NSString *path = [self filePathForFileName:fileName];
    NSFileManager *fm = [NSFileManager defaultManager];
 NSError *error;
 if (![fm removeItemAtPath:path error:&error])
 {
        NSLog(@ "%@ can not be removed because:%@" , path, error);
 }
 [self loadFileList];
 } 
  
 @end  

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