Question

我有一个交互式画布，您可以在其中单击某些按钮。但是当我在手机上测试它并尝试点击按钮时，它不会立即做出反应。我必须按下并等待行动。

在此测试：http://choix.me/labor/canvas/car.html

这里是upBtn的javascript代码：

    this.upBtn.addEventListener("mousedown", upClick.bind(this));
    this.upBtn.addEventListener("click", upRelease.bind(this));

    function upClick()
    {
                up = true;
                speed = 10;
                forward = 1;
    }
    function upRelease()
    {
                up = false;
                speed = 10;
                forward = 0;
    }

Answer 1

您正在使用mousedown和click事件，这些事件都不是移动浏览器自然支持的事件。它们可以工作，但与在桌面上工作的方式不同。结合触摸事件，特别是touchstart和touchend事件

https://developer.mozilla.org/en-US/docs/Web/API/Touch_events

   this.upBtn.addEventListener("touchstart", upClick.bind(this));
    this.upBtn.addEventListener("touchend", upRelease.bind(this));

    function upClick()
    {
                up = true;
                speed = 10;
                forward = 1;
    }
    function upRelease()
    {
                up = false;
                speed = 10;
                forward = 0;
    }

没有经过测试的代码，但要点是

Answer 2

它与CreateJS有关：

此行修正了它：

        //The command that we want to run
        string subCommand = zipAlignPath + " -v 4 ";

        //The arguments to the command that we want to run
        string subCommandArgs = apkPath + " release_aligned.apk";

        //I am wrapping everything in a CMD /K command so that I can see the output and so that it stays up after executing
        //Note: arguments in the sub command need to have their backslashes escaped which is taken care of below
        string subCommandFinal = @"cmd /K \""" + subCommand.Replace(@"\", @"\\") + " " + subCommandArgs.Replace(@"\", @"\\") + @"\""";

        //Run the runas command directly
        ProcessStartInfo procStartInfo = new ProcessStartInfo("runas.exe");

        //Create our arguments
        string finalArgs = @"/env /user:Administrator """ + subCommandFinal + @"""";
        procStartInfo.Arguments = finalArgs;

        //command contains the command to be executed in cmd
        using (System.Diagnostics.Process proc = new System.Diagnostics.Process())
        {
            proc.StartInfo = procStartInfo;
            proc.Start();

        }

自： permute

如何防止Canvas像移动设备上的图像一样？

2 个答案: