目錄：

  1. 存文件
  2. 取文件
  3. 按類型存文件

1.存文件

    NSSavePanel*    panel = [NSSavePanel savePanel];
    //設(shè)置默認(rèn)的文件名
    [panel setNameFieldStringValue:@"213.html"];
    //設(shè)置提示信息
    [panel setMessage:@"將網(wǎng)頁存到哪里慢宗？"];  
    // 
    [panel   setAllowsOtherFileTypes:YES];
    //設(shè)置允許的文件類型
    [panel setAllowedFileTypes:@[@"html"]];
    //隱藏擴(kuò)展名
    [panel setExtensionHidden:YES];
    //設(shè)置可以創(chuàng)建文件
    [panel setCanCreateDirectories:YES];
    //運行窗口
    [panel beginSheetModalForWindow:self.view.window 
    completionHandler:^(NSInteger result){
        if (result == NSFileHandlingPanelOKButton)
        {
        NSString *path = [[panel URL] path];
        //將文字存入轴合，保存成HTML
        [@"onecodego" writeToFile:path atomically:YES 
        encoding:NSUTF8StringEncoding error:nil];
        }
    }];

屏幕快照 2016-09-01 上午11.00.46.png

2.取文件

    NSOpenPanel* openDlg = [NSOpenPanel openPanel];
    //設(shè)置默認(rèn)路徑
    //[openDlg setDirectory:NSOpenStepRootDirectory()];
    [openDlg setCanChooseFiles:TRUE];
    //設(shè)置可以打開文件夾
    [openDlg setCanChooseDirectories:FALSE];
    //設(shè)置是否可多選
    [openDlg setAllowsMultipleSelection:TRUE];
    [openDlg setAllowsOtherFileTypes:FALSE];
    //允許的文件類型
    [openDlg setAllowedFileTypes:@[@"png", @"PNG"]];
    
    if ([openDlg runModal] == NSModalResponseOK)
    {
        
        //用戶選中的路徑
        NSString* fileNameOpened = [[[openDlg URLs] objectAtIndex:0] path];
        
        NSLog(@"%@",fileNameOpened);
        
    }

屏幕快照 2016-09-01 上午11.29.52.png

3. 按類型存文件

 NSSavePanel *panel = [NSSavePanel savePanel];
    
    NSView *viewExt = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 180, 40)];
    
    NSTextField *labExt = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 10, 80, 20)];
    
    
    
    [labExt setBordered:NO];
    
    [labExt setDrawsBackground:NO];
    
    labExt.stringValue = @"Image type: ";
    
    
    
    NSComboBox *Ext = [[NSComboBox alloc] initWithFrame:NSMakeRect(80, 8, 100, 25)];
    
    [Ext addItemsWithObjectValues:@[@".bmp", @".jpg", @".png", @".tif"]];
    //默認(rèn)選擇第幾個
    [Ext selectItemAtIndex:0];

    [viewExt addSubview:labExt];
    
    [viewExt addSubview: Ext];
    
    [panel setAccessoryView:viewExt];

    [panel runModal];

屏幕快照 2016-09-01 下午12.04.02.png