Godric Kwok created CB-5664:
-------------------------------
Summary: AppCache's "checking" event fired more than once per App
startup.
Key: CB-5664
URL: https://issues.apache.org/jira/browse/CB-5664
Project: Apache Cordova
Issue Type: Bug
Components: Android
Affects Versions: 3.3.0
Environment: Android 4.1.2 (SDK 16)
Reporter: Godric Kwok
Expected Behavior:
1) AppCache is only check ONCE per App startup.
Observed Behavior:
1) AppCache is check *multiple times* on random per App Startup.
Steps to repeat:
1) console.log() AppCache's "checking" event.
2) Start App, see "checking" once.
3) navigator.app.exitApp(), then re-launches App.
4) First relaunch leads to a single "checking" still.
5) Repeat the relaunch a few times.
6) Then you'll see sometimes it's a double, triple, or quadruple (but never 5x).
7) Only a "KILL" from task switcher will reset these accumulations.
Code Snippet:
document.addEventListener('deviceready', function(){
function logEvent(event) {
console.log('appcache: '+event.type);
}
window.applicationCache.addEventListener('checking', logEvent, false);
window.applicationCache.addEventListener('noupdate', logEvent, false);
window.applicationCache.addEventListener('downloading', logEvent, false);
window.applicationCache.addEventListener('progress', logEvent, false);
window.applicationCache.addEventListener('cached', logEvent, false);
window.applicationCache.addEventListener('updateready', logEvent, false);
window.applicationCache.addEventListener('obsolete', logEvent, false);
window.applicationCache.addEventListener('error', logEvent, false);
document.addEventListener('backbutton', function(){
navigator.app.exitApp();
}, false);
}, false);
LogCat pattern:
(1x)
12-17 21:11:13.470: I/Web Console(2142): appcache: checking:23
12-17 21:11:13.478: I/Web Console(2142): appcache: noupdate:23
(1x updateready)
12-17 21:11:47.775: I/Web Console(2142): appcache: checking:23
12-17 21:11:50.072: I/Web Console(2142): appcache: downloading:23
12-17 21:11:50.072: I/Web Console(2142): appcache: progress:23
12-17 21:11:50.166: I/Web Console(2142): appcache: progress:23
12-17 21:11:50.197: I/Web Console(2142): appcache: progress:23
12-17 21:11:50.697: I/Web Console(2142): appcache: progress:23
12-17 21:11:50.697: I/Web Console(2142): appcache: progress:23
12-17 21:11:50.697: I/Web Console(2142): appcache: updateready:23
12-17 21:11:50.697: I/Web Console(2142): appcache: updateready:23
(2x)
12-17 21:12:27.283: I/Web Console(2142): appcache: checking:23
12-17 21:12:27.283: I/Web Console(2142): appcache: checking:23
12-17 21:12:29.759: I/Web Console(2142): appcache: noupdate:23
12-17 21:12:29.759: I/Web Console(2142): appcache: noupdate:23
(2x)
12-17 21:12:35.447: I/Web Console(2142): appcache: checking:23
12-17 21:12:35.447: I/Web Console(2142): appcache: checking:23
12-17 21:12:38.025: I/Web Console(2142): appcache: noupdate:23
12-17 21:12:38.025: I/Web Console(2142): appcache: noupdate:23
(3x)
12-17 21:12:45.322: I/Web Console(2142): appcache: checking:23
12-17 21:12:45.322: I/Web Console(2142): appcache: checking:23
12-17 21:12:45.322: I/Web Console(2142): appcache: checking:23
12-17 21:12:47.345: I/Web Console(2142): appcache: noupdate:23
12-17 21:12:47.345: I/Web Console(2142): appcache: noupdate:23
12-17 21:12:47.345: I/Web Console(2142): appcache: noupdate:23
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