我正在使用PhoneGap Api 1.4.1并且我尝试使用1.5.0,PhoneGap事件volumeupbutton和volumedownbutton不工作,它既不适用于
Android设备也不适用于模拟器.当按下音量按钮时,它必须按下它显示警报查看代码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap Volume Down Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point,the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready",onDeviceReady,false);
}
// PhoneGap is loaded and it is Now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("volumedownbutton",onVolumeDownKeyDown,false);
document.addEventListener("volumeupbutton",onVolumeUpKeyDown,false);
}
// Handle the volume down button
//
function onVolumeDownKeyDown() {
alert("Down");
}
function onVolumeUpKeyDown() {
alert("Up");
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
解决方法
您可以执行以下操作,以使用android运行音量按钮：
@Override
public boolean onKeyDown(int keyCode,KeyEvent event) {
//If volumedown key
if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
this.loadUrl("javascript:cordova.fireDocumentEvent('volumedownbutton');");
return true;
} else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
this.loadUrl("javascript:cordova.fireDocumentEvent('volumeupbutton');");
return true;
} else {
//return super.onKeyDown(keyCode,event);
}
//return super.onKeyDown(keyCode,event);
return true;
}
@Override
public boolean onKeyUp(int keyCode,KeyEvent event) {
LOG.d(TAG,"KeyUp has been triggered on the view" + keyCode);
// If back key
if (keyCode == KeyEvent.KEYCODE_BACK) {
this.loadUrl("javascript:cordova.fireDocumentEvent('backbutton');");
return true;
}
// Legacy
else if (keyCode == KeyEvent.KEYCODE_MENU) {
this.loadUrl("javascript:cordova.fireDocumentEvent('menubutton');");
return true;
}
// If search key
else if (keyCode == KeyEvent.KEYCODE_SEARCH) {
this.loadUrl("javascript:cordova.fireDocumentEvent('searchbutton');");
return true;
}
return false;
}
我从cordova错误报告中复制了这段代码.此代码适用于cordova 2.0.我瘦你必须将“cordova.fireDocumentEvent”更改为“phonegap.fireDocument”或“PhoneGap.fireDocumentEvent”
更新：
刚刚写了一篇关于这个bug的小博客帖子,这个帖子已经由上面的代码解决了.可以在该帖子中找到Cordova-Issue-Tracker的链接：http://christian-kuetbach.de/blog/post/13
更新2：
问题似乎在cordova 1.9中得到修复：
https://issues.apache.org/jira/browse/CB-871
希望这可以帮助.