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I have an awkward visual glitch. I want a nice transition when changing pages on an app. Unfortunately, the first time I change to another page, instead of sliding the current page out and the new page in, the current page is immediately replaced by the new page and then slides out. When the first page is out of view, the new page is shown. However, the second time around, it works like a charm!
This is running on iphone with jQuery Mobile + PhoneGap
I made a video to help clarify the issue: http://www.youtube.com/watch?v=Ybvzh_wTnSE
<body style="background-color: #000;">
<div id="container" style="display:none;">
<div id="side-menu" style="display:none;">
<div id="header_top"></div>
<a href="#dives" onclick="showdives();"><div id="header_dives" class="selected"></div></a>
<div id="header_spacer1"></div>
<a href="#explore" onclick="showexplore();"><div id="header_explore"></div></a>
<div id="header_spacer2"></div>
<a href="#search" onclick="showsearch();"><div id="header_search"></div></a>
<div id="header_spacer3"></div>
<a href="#settings" onclick="showsettings();"><div id="header_settings"></div></a>
<div id="header_bottom"></div>
</div>
<div id="slide_mask">
<!-- START of LOGIN page -->
<div data-role="page" id="login">
<div id="home_frame">
<div id="home_logo"></div>
<div id="home_fblogin" onclick="login()"></div>
<div class="home_login">
<p>Email: <input type="text" name="user[email]" size="30"/></p>
<p>Password: <input type="password" name="user[password]" size="30"/></p>
<button onclick="show_page_home();">LOGIN</button>
</div>
</div>
</div>
<!-- END of LOGIN page -->
<!-- START of LOGIN page -->
<div data-role="page" id="dives" class="right_pane">
<p>My dives !</p>
</div><!-- /content -->
<div data-role="page" id="explore" class="hidden right_pane">
<p>My explore !</p>
</div><!-- /content -->
<div data-role="page" id="search" class="hidden right_pane">
<p>My search !</p>
</div><!-- /content -->
<div data-role="page" id="settings" class="hidden right_pane">
<p>My settings !</p>
<button onclick="logout_db();">logout</button>
</div><!-- /content -->
<!-- END of LOGIN page -->
</div>
</div>
<div id="log"></div>
<div id="data"></div>
</body>
And the relevant CSS:
body {margin: 0; font: 18px Helvetica; text-align: center; background-color: #000; background: url(../img/bg_big.png) repeat;
-webkit-user-select: none; /* prevent copy paste for all elements */
}
#container { width:320px; height:460px; overflow: hidden;}
input{ -webkit-user-select: text; /* enable copy paste for elements with this class */}
a {-webkit-user-select: none; /* prevent copy paste for all elements */}
span {-webkit-user-select: none; /* prevent copy paste for all elements */}
#side-menu {z-index: 1000 !important; position: fixed; height: 460px; width: 56.5px; background: url(../img/bg_big.png) no-repeat; display: inline-block;
overflow: hidden; top: 0px; left: 0px; }
#header_top {background: url(../img/header/header_top.png) no-repeat; background-size: 56.5px 48.96px; width: 56.5px; height: 48.96px; display: block;}
#header_dives {background: url(../img/header/dives.png) no-repeat; background-size: 56.5px 51.75px; width: 56.5px; height: 51.75px; display: block;}
#header_dives.selected{background: url(../img/header/dives_selected.png) no-repeat;}
#header_spacer1{background: url(../img/header/header_space1.png) no-repeat; background-size: 56.5px 13.9px; width: 56.5px; height: 13.9px; display: block;}
#header_explore{background: url(../img/header/explore.png) no-repeat; background-size: 56.5px 51.75px; width: 56.5px; height: 51.75px; display: block;}
#header_explore.selected{background: url(../img/header/explore_selected.png) no-repeat;}
#header_spacer2{background: url(../img/header/header_space2.png) no-repeat; background-size: 56.5px 15.33px; width: 56.5px; height: 15.33px; display: block;}
#header_search{background: url(../img/header/search.png) no-repeat; background-size: 56.5px 51.75px; width: 56.5px; height: 51.75px; display: block;}
#header_search.selected{background: url(../img/header/search_selected.png) no-repeat;}
#header_spacer3{background: url(../img/header/header_space3.png) no-repeat; background-size: 56.5px 17.73px; width: 56.5px; height: 17.73px; display: block;}
#header_settings{background: url(../img/header/settings.png) no-repeat; background-size: 56.5px 51.75px; width: 56.5px; height: 51.75px; display: block;}
#header_settings.selected{background: url(../img/header/settings_selected.png) no-repeat;}
#header_bottom{background: url(../img/header/header_bottom.png) no-repeat; background-size: 56.5px 160px; width: 56.5px; height: 160px; display: block;}
.hidden {display: none;}
.right_pane{width: 263.5px !important; background: url(../img/right_bg.png) no-repeat; background-size:263.5px 460px; width: 263.5px; height: 460px; left: 56.5px !important;}
#slide_mask{ display: inline-block; overflow: hidden; padding-left: 56.5px; width: 263.5px; height: 460px; top: 0;}
and the bit of JS:
///////////////////////////////////
//MENU MECHANICS
///////////////////////////////////
function showdives(){
$("#side-menu .selected").removeClass("selected");
$("#header_dives").addClass("selected");
}
function showexplore(){
$("#side-menu .selected").removeClass("selected");
$("#header_explore").addClass("selected");
}
function showsearch(){
$("#side-menu .selected").removeClass("selected");
$("#header_search").addClass("selected");
}
function showsettings(){
$("#side-menu .selected").removeClass("selected");
$("#header_settings").addClass("selected");
}
The onclick methods only add/remove the "selected" class to/from the menu items.
898
I believe people refer to this as "flickering", so you'll have better results when you search for that. After looking around, it looks like your problem is common on android and can be solved by adding the following CSS:
.ui-page {
-webkit-backface-visibility: hidden;
}
Here are a few references:
87
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