Javascript 找不到这些变量，为什么? [英] Javascript can't find these variables, why?

问题描述

我正在使用 Phonegap 创建一个 Android 应用程序(录音机)，但我的代码中有这两个错误:

I'm using Phonegap to create an Android application (Voice Recorder), but I had these 2 errors in my code:

1. ReferenceError: Can't find variable: Media.

TypeError: 表达式mediaRec"未定义的结果不是对象.

第一个错误发生在应用程序运行时.第二个错误发生在我调用 recordAudio(); 时.方法.

The first error happens when the application runs. The second error happens when I call the recordAudio(); method.

如果你知道，请告诉我有什么问题.

Tell me what's the problem please if you know.

var mediaRec;
var src;
document.addEventListener("deviceready", onDeviceReady, false);

function onDeviceReady() {

}
function init() {
    document.getElementById('status').innerHTML = "Recording Status";
    src = "myrecording.mp3";
    mediaRec = new Media(src, onSuccess, onError);
}

function recordAudio() {
    // Record audio
    mediaRec.startRecord();
    // Stop recording after 10 sec
    var recTime = 0;
    var recInterval = setInterval(function() {
        recTime = recTime + 1;
        setAudioPosition(recTime + " sec");
        if (recTime >= 10) {
            clearInterval(recInterval);
        }
    }, 1000);
}

// Stop audio
function stopRecording() {
    if (mediaRec) {
        mediaRec.stopRecord();
    }
    clearInterval(mediaTimer);
    mediaTimer = null;
}
// onSuccess Callback
function onSuccess() {
    console.log("recordAudio():Audio Success");
}
// onError Callback 
function onError(error) {
    alert('code: ' + error.code + '\n' + 'message: ' + error.message + '\n');
}
// Set audio position
function setAudioPosition(position) {
    document.getElementById('rec_position').innerHTML = position;
}

谢谢.

推荐答案

我认为 scr = "/android_asset/www/myrecording.mp3" 因为目录 phonegap 在 asset/www/...如果在 phonegap 中找不到目录，javascript 会显示类似 ReferenceError: Can't find variable: Media 的警报.

I think scr = "/android_asset/www/myrecording.mp3" because directory phonegap in asset/www/... If directory not found javascript in phonegap show alert like that ReferenceError: Can't find variable: Media.

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