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CustomURL: Launch app if app is installed, else open an alternate URL (Android all browsers)
<script type="text/javascript">
var custom = "myapp://custom_url";
var alt = "http://mywebsite.com/alternate/content";
var g_intent = "intent://scan/#Intent;scheme=zxing;package=com.google.zxing.client.android;end";
var timer;
var heartbeat;
var iframe_timer;
function clearTimers() {
clearTimeout(timer);
clearTimeout(heartbeat);
clearTimeout(iframe_timer);
}
function intervalHeartbeat() {
if (document.webkitHidden || document.hidden) {
clearTimers();
}
}
function tryIframeApproach() {
var iframe = document.createElement("iframe");
iframe.style.border = "none";
iframe.style.width = "1px";
iframe.style.height = "1px";
iframe.onload = function () {
document.location = alt;
};
iframe.src = custom;
document.body.appendChild(iframe);
}
function tryWebkitApproach() {
document.location = custom;
timer = setTimeout(function () {
document.location = alt;
}, 2500);
}
function useIntent() {
document.location = g_intent;
}
function launch_app_or_alt_url(el) {
heartbeat = setInterval(intervalHeartbeat, 200);
if (navigator.userAgent.match(/Chrome/)) {
useIntent();
} else if (navigator.userAgent.match(/Firefox/)) {
tryWebkitApproach();
iframe_timer = setTimeout(function () {
tryIframeApproach();
}, 1500);
} else {
tryIframeApproach();
}
}
$(".source_url").click(function (event) {
launch_app_or_alt_url($(this));
event.preventDefault();
});
</script>
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