سويفت API لتصدير الرسم البياني إلى ملف PNG

    // For complete examples and data files, please go to https://github.com/aspose-cells-cloud/aspose-cells-cloud-swift/
    import AsposeCellsCloud
    let expectation1 = self.expectation(description: "checkAuth")
    AsposeCellsCloudAPI.clientId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
    AsposeCellsCloudAPI.clientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
    AuthAspose.checkAuth()
    {
        (authError) in
        guard authError == nil else {
            XCTFail("error checkAuth")
            return
        }
        expectation1.fulfill()
    }
    self.waitForExpectations(timeout: testTimeout, handler: nil)
    let expectation = self.expectation(description: "testpostExport_Workbook")
    let objectType:String = "chart"
    let format:String = "png"
    var files = Dictionary<String, URL>()
    files[BOOK1] = getURL(BOOK1)
    files[MYDOC] = getURL(MYDOC)        
    LiteCellsAPI.postExport(files: files, objectType: objectType, format: format)
    {
        (response, error) in
        guard error == nil else {
            XCTFail("error testpostExport_Workbook")
            return
        }        
        if let response = response {
            XCTAssertTrue(response is FilesResult)
            expectation.fulfill()
        }
    }
    self.waitForExpectations(timeout: testTimeout, handler: nil)