我们能以某种方式在Android上滚动更流畅吗？ 它在iPad和iPhone上运行良好，但是任何，即使是最强大的Android设备，它也不是平稳，慢下来的。我使用版本cli-5.1.1和插件人行横道。当有一张照片时，这一点尤为明显，因为你滚动它们有点抽搐。
感谢您的帮助！
答案 0 :(得分：1)
请参阅此网址：https://quickleft.com/blog/4-steps-to-minimizing-rendering-issues-in-cordova-applications/
您应该将以下样式应用于滚动元素：
import UIKit
class ViewController: UIViewController {
private let kKeychainItemName = "Google Apps Script Execution API"
private let kClientID = "493692471278-3mf6bo212flgjopl06hrjfeepphe70h4.apps.googleusercontent.com"
private let kScriptId = "Mj0RNm2ZtohFurieBLPwnxYAb4Jnnku4P"
// If modifying these scopes, delete your previously saved credentials by
// resetting the iOS simulator or uninstall the app.
private let scopes = ["https://www.googleapis.com/auth/drive"]
private let service = GTLService() // error Use of unresolved identifier 'GTLService'
let output = UITextView()
// When the view loads, create necessary subviews
// and initialize the Google Apps Script Execution API service
override func viewDidLoad() {
super.viewDidLoad()
output.frame = view.bounds
output.editable = false
output.contentInset = UIEdgeInsets(top: 20, left: 0, bottom: 20, right: 0)
output.autoresizingMask = UIViewAutoresizing.FlexibleHeight |
UIViewAutoresizing.FlexibleWidth
// error*** Binary operator '|' cannot be applied to two 'UIViewAutoresizing' operands
view.addSubview(output);
// Error**Use of unresolved identifier 'GTMOAuth2ViewControllerTouch'
if let auth = GTMOAuth2ViewControllerTouch.authForGoogleFromKeychainForName(
kKeychainItemName,
clientID: kClientID,
clientSecret: nil) {
service.authorizer = auth
}
}
// When the view appears, ensure that the Google Apps Script Execution API service is authorized
// and perform API calls
override func viewDidAppear(animated: Bool) {
if let authorizer = service.authorizer,
canAuth = authorizer.canAuthorize where canAuth {
callAppsScript()
} else {
presentViewController(
createAuthController(),
animated: true,
completion: nil
)
}
}
// Calls an Apps Script function to list the folders in the user's
// root Drive folder.
func callAppsScript() {
output.text = "Getting folders..."
let baseUrl = "https://script.googleapis.com/v1/scripts/\(kScriptId):run"
let url = GTLUtilities.URLWithString(baseUrl, queryParameters: nil)
// error ** Use of unresolved identifier 'GTLUtilities'
// Create an execution request object.
var request = GTLObject()
// Error** Use of unresolved identifier 'GTLObject'
request.setJSONValue("getFoldersUnderRoot", forKey: "function")
// Make the API request.
service.fetchObjectByInsertingObject(request,
forURL: url,
delegate: self,
didFinishSelector: "displayResultWithTicket:finishedWithObject:error:")
}
// Displays the retrieved folders returned by the Apps Script function.
func displayResultWithTicket(ticket: GTLServiceTicket,
finishedWithObject object : GTLObject,
error : NSError?) {
if let error = error {
// The API encountered a problem before the script
// started executing.
showAlert("The API returned the error: ",
message: error.localizedDescription)
return
}
if let apiError = object.JSON["error"] as? [String: AnyObject] {
// The API executed, but the script returned an error.
// Extract the first (and only) set of error details and cast as
// a Dictionary. The values of this Dictionary are the script's
// 'errorMessage' and 'errorType', and an array of stack trace
// elements (which also need to be cast as Dictionaries).
let details = apiError["details"] as! [[String: AnyObject]]
var errMessage = String(
format:"Script error message: %@\n",
details[0]["errorMessage"] as! String)
if let stacktrace =
details[0]["scriptStackTraceElements"] as? [[String: AnyObject]] {
// There may not be a stacktrace if the script didn't start
// executing.
for trace in stacktrace {
let f = trace["function"] as? String ?? "Unknown"
let num = trace["lineNumber"] as? Int ?? -1
errMessage += "\t\(f): \(num)\n"
}
}
// Set the output as the compiled error message.
output.text = errMessage
} else {
// The result provided by the API needs to be cast into the
// correct type, based upon what types the Apps Script function
// returns. Here, the function returns an Apps Script Object with
// String keys and values, so must be cast into a Dictionary
// (folderSet).
let response = object.JSON["response"] as! [String: AnyObject]
let folderSet = response["result"] as! [String: AnyObject]
if folderSet.count == 0 {
output.text = "No folders returned!\n"
} else {
var folderString = "Folders under your root folder:\n"
for (id, folder) in folderSet {
folderString += "\t\(folder) (\(id))\n"
}
output.text = folderString
}
}
}
// Creates the auth controller for authorizing access to Google Apps Script Execution API
private func createAuthController() -> GTMOAuth2ViewControllerTouch {
// Error** Use of undeclared type 'GTLServiceTicket' let scopeString = " ".join(scopes) // Error* 'join' is unavailable: call the 'joinWithSeparator()' method on the sequence of elements
return GTMOAuth2ViewControllerTouch(
scope: scopeString,
clientID: kClientID,
clientSecret: nil,
keychainItemName: kKeychainItemName,
delegate: self,
finishedSelector: "viewController:finishedWithAuth:error:"
)
}
// Handle completion of the authorization process, and update the Google Apps Script Execution API
// with the new credentials.
func viewController(vc : UIViewController,
finishedWithAuth authResult : GTMOAuth2Authentication, error : NSError?)
// Error** Use of undeclared type 'GTMOAuth2Authentication' {
if let error = error {
service.authorizer = nil
showAlert("Authentication Error", message: error.localizedDescription)
return
}
service.authorizer = authResult
dismissViewControllerAnimated(true, completion: nil)
}
// Helper for showing an alert
func showAlert(title : String, message: String) {
let alert = UIAlertView(
title: title,
message: message,
delegate: nil,
cancelButtonTitle: "OK"
)
alert.show()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}