在 onPause 后 PhoneGap 继续在 Android 上运行

问题描述

我决定在应用处于后台时测试 phonegap WebView 是否处于活动状态.

I decided to test if phonegap WebView is live when app is in a background.

function test2(x){
    $('<div></div>', {text: x.cmd}).appendTo($('#list'));
}
$(function(){test2({cmd:"start"});});
function cb_pause(){test2({cmd:"pause"});}
function cb_resume(){   test2({cmd:"resume"});}
function tick(){test2({cmd:"timer" + timer});timer++;setTimeout(tick, 1000);}
document.addEventListener("pause", cb_pause, false);
document.addEventListener("resume", cb_resume, false);
tick();

它在 onPause 和 onResume 上打印 pause 和 resume.并每秒打印 timer0、timer1 等.

It prints pause and resume on onPause and onResume.and print timer0, timer1, etc every second.

即使我离开应用程序并开始玩游戏，它仍在打印.我知道我可以而且应该在 onPause 中停止计时器，但仍然可以.看起来不对.我预计 android 会冻结 WebView.

It was printing even when I left app and started playing game.I know I can and should stop timer in onPause but still. It looks wrong. I expected android will freeze WebView.

我知道后台线程在后台应用程序被卸载之前不会停止.

I know background thread will not stop if in background app until it is unloaded.

所以问题是:有没有办法在 onPause 上冻结/暂停/卸载 webview 并在 onResume

So question is: Is there way to freeze/suspend/unload webview on onPause and unfreeze/resume/load on onResume

当我说加载时，我的意思是当用户离开应用程序时它应该处于相同的状态.

When I say load I mean it should be in same state when user left app.

当我说冻结时，我的意思是我的代码会暂停，即使它会继续调用 setTimeout

When I say freeze, I mean that my code to will pause even when it will continue to call setTimeout

我想我希望 Android 表现得像 iOS.

I guess I expect Android to behave like iOS.

推荐答案

我迟到了.在 phonegap 中有 KeepRunning 参数在 config.xml

I am late with response. In phonegap there is KeepRunning param in config.xml

您必须将以下行添加到 config.xml

You must add following line to config.xml

<platform name="android">
    ...
    <preference name="KeepRunning" value="false" />

它将调用 pauseTimers() 并暂停所有 WebView.pauseTimers() 不是隐藏方法，不需要反射.

It will call pauseTimers() and pause all WebViews. pauseTimers() is not hidden method and no reflection is needed.

这篇关于在 onPause 后 PhoneGap 继续在 Android 上运行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！