6

我正在使用 padilicious 来检测将在 iOS 和桌面上查看的网页的滑动手势。在我的网站的上一页和下一页向左/向右滑动非常有用。但是，向上/向下滑动时，它似乎覆盖了 iPhone/iPad 中的默认行为。我想要向上/向下滑动来滚动页面，当我没有 padilicious 运行时它会这样做。只是让代码忽略向上/向下滑动似乎不起作用。

我去过的padilicious代码部分

function processingRoutine() {
    var swipedElement = document.getElementById(triggerElementID);
    if ( swipeDirection == 'left' ) {
        document.location = document.getElementById('nextPage').href;
    } else if ( swipeDirection == 'right' ) {
        document.location = document.getElementById('prevPage').href;
    } else if ( swipeDirection == 'up' ) {
        return;
    } else if ( swipeDirection == 'down' ) {
        return;
    }


}
4

5 回答 5

5

event.preventDefault();从所有功能中删除。在函数中processingRoutine() {}添加event.preventDefault();你想要的。

function processingRoutine() {
    var swipedElement = document.getElementById(triggerElementID);
    if ( swipeDirection == 'left' ) {
        // REPLACE WITH YOUR ROUTINES
        //swipedElement.style.backgroundColor = 'orange';
        event.preventDefault();
    } else if ( swipeDirection == 'right' ) {
        // REPLACE WITH YOUR ROUTINES
        //swipedElement.style.backgroundColor = 'green';
        event.preventDefault();
    } else if ( swipeDirection == 'up' ) {
        // REPLACE WITH YOUR ROUTINES
        //swipedElement.style.backgroundColor = 'maroon';
    } else if ( swipeDirection == 'down' ) {
        // REPLACE WITH YOUR ROUTINES
        //swipedElement.style.backgroundColor = 'purple';
    }
}
于 2013-01-15T06:12:55.233 回答
2

有一个 jquery 库，可以完成这项工作（通过不提供向上/向下方法）： http: //plugins.jquery.com/project/Touchwipe-iPhone-iPad-wipe-gesture

于 2011-03-14T21:10:51.717 回答
1

我不熟悉 padilicious，但请检查是否在ontouchmove="BlockMove(event);"任何地方设置了它，这会阻止页面像您描述的那样滚动，我不确定您如何让它保持垂直滚动但水平滑动。

编辑：从那以后，我发现了一个非常有用的概述，用于制作“本机”感觉的 iOS Web 应用程序，它可能不是您正在寻找的，但可以为您提供解决问题的另一种途径。看看： http: //matt.might.net/articles/how-to-native-iphone-ipad-apps-in-javascript/

于 2011-03-14T21:07:18.673 回答
1

Padilicious 似乎在所有情况下都在防止违约。在所有情况下查看对 event.preventDefault() 的调用。 

function touchStart(event,passedName) {
  // disable the standard ability to select the touched object
  event.preventDefault();

您将不得不更改 start、stop、... 处理程序以在 up 和 down 情况下不调用 preventDefault()。

于 2012-06-22T05:04:32.430 回答
0

我更改了脚本，这项工作：

    // TOUCH-EVENTS SINGLE-FINGER SWIPE-SENSING JAVASCRIPT
// Courtesy of PADILICIOUS.COM and MACOSXAUTOMATION.COM

// this script can be used with one or more page elements to perform actions based on them being swiped with a single finger

var triggerElementID = null; // this variable is used to identity the triggering element
var fingerCount = 0;
var startX = 0;
var startY = 0;
var curX = 0;
var curY = 0;
var deltaX = 0;
var deltaY = 0;
var horzDiff = 0;
var vertDiff = 0;
var minLength = 72; // the shortest distance the user may swipe
var swipeLength = 0;
var swipeAngle = null;
var swipeDirection = null;

// The 4 Touch Event Handlers

// NOTE: the touchStart handler should also receive the ID of the triggering element
// make sure its ID is passed in the event call placed in the element declaration, like:
// <div id="picture-frame" ontouchstart="touchStart(event,'picture-frame');"  ontouchend="touchEnd(event);" ontouchmove="touchMove(event);" ontouchcancel="touchCancel(event);">

function touchStart(event,passedName) {
    // disable the standard ability to select the touched object
    //event.preventDefault();
    // get the total number of fingers touching the screen
    fingerCount = event.touches.length;
    // since we're looking for a swipe (single finger) and not a gesture (multiple fingers),
    // check that only one finger was used
    if ( fingerCount == 1 ) {
        // get the coordinates of the touch
        startX = event.touches[0].pageX;
        startY = event.touches[0].pageY;
        // store the triggering element ID
        triggerElementID = passedName;
    } else {
        // more than one finger touched so cancel
        touchCancel(event);
    }
}

function touchMove(event) {
    //event.preventDefault();
    if ( event.touches.length == 1 ) {
        curX = event.touches[0].pageX;
        curY = event.touches[0].pageY;
    } else {
        touchCancel(event);
    }
}

function touchEnd(event) {
    //event.preventDefault();
    // check to see if more than one finger was used and that there is an ending coordinate
    if ( fingerCount == 1 && curX != 0 ) {
        // use the Distance Formula to determine the length of the swipe
        swipeLength = Math.round(Math.sqrt(Math.pow(curX - startX,2) + Math.pow(curY - startY,2)));
        // if the user swiped more than the minimum length, perform the appropriate action
        if ( swipeLength >= minLength ) {
            caluculateAngle();
            determineSwipeDirection();
            processingRoutine();
            touchCancel(event); // reset the variables
        } else {
            touchCancel(event);
        }   
    } else {
        touchCancel(event);
    }
}

function touchCancel(event) {
    // reset the variables back to default values
    fingerCount = 0;
    startX = 0;
    startY = 0;
    curX = 0;
    curY = 0;
    deltaX = 0;
    deltaY = 0;
    horzDiff = 0;
    vertDiff = 0;
    swipeLength = 0;
    swipeAngle = null;
    swipeDirection = null;
    triggerElementID = null;
}

function caluculateAngle() {
    var X = startX-curX;
    var Y = curY-startY;
    var Z = Math.round(Math.sqrt(Math.pow(X,2)+Math.pow(Y,2))); //the distance - rounded - in pixels
    var r = Math.atan2(Y,X); //angle in radians (Cartesian system)
    swipeAngle = Math.round(r*180/Math.PI); //angle in degrees
    if ( swipeAngle < 0 ) { swipeAngle =  360 - Math.abs(swipeAngle); }
}

function determineSwipeDirection() {
    if ( (swipeAngle <= 45) && (swipeAngle >= 0) ) {
        swipeDirection = 'left';
    } else if ( (swipeAngle <= 360) && (swipeAngle >= 315) ) {
        swipeDirection = 'left';
    } else if ( (swipeAngle >= 135) && (swipeAngle <= 225) ) {
        swipeDirection = 'right';
    }

    /* else if ( (swipeAngle > 45) && (swipeAngle < 135) ) {
        swipeDirection = 'down';
    } else {
        swipeDirection = 'up';
    }*/
}

function processingRoutine() {
    var swipedElement = document.getElementById(triggerElementID);
    if ( swipeDirection == 'left' ) {
        // REPLACE WITH YOUR ROUTINES
        event.preventDefault();
        swipedElement.style.backgroundColor = 'orange';
    } else if ( swipeDirection == 'right' ) {
        // REPLACE WITH YOUR ROUTINES
        event.preventDefault();
        swipedElement.style.backgroundColor = 'green';
    } 

    /*else if ( swipeDirection == 'up' ) {
        // REPLACE WITH YOUR ROUTINES
        swipedElement.style.backgroundColor = 'maroon';
    } else if ( swipeDirection == 'down' ) {
        // REPLACE WITH YOUR ROUTINES
        swipedElement.style.backgroundColor = 'purple';
    }*/
}
于 2013-02-12T10:44:19.623 回答