钛开始和停止声音

Question

我有这个工作在Javascript中，但似乎无法让它在钛上工作。

下面是代码：

var index = 0; 
var i = 0; 

// Filename 
var wordSoundArray = []; 

wordSoundArray.push('audio/the.mp3'); 
wordSoundArray.push('audio/of.mp3'); 
wordSoundArray.push('audio/and.mp3'); 
wordSoundArray.push('audio/a.mp3'); 
wordSoundArray.push('audio/to.mp3'); 
wordSoundArray.push('audio/in.mp3'); 
wordSoundArray.push('audio/is.mp3'); 
wordSoundArray.push('audio/you.mp3'); 
wordSoundArray.push('audio/that.mp3'); 
wordSoundArray.push('audio/it.mp3'); 
wordSoundArray.push('audio/he.mp3'); 
wordSoundArray.push('audio/was.mp3'); 
wordSoundArray.push('audio/for.mp3'); 
wordSoundArray.push('audio/on.mp3'); 
wordSoundArray.push('audio/are.mp3'); 

newWordBtn.addEventListener("click", function(e){ 
    wordLabel.text = newWordArray[i++]; 
    if (i === newWordArray.length) 
      i = 0; 

    var snd = Titanium.Media.createSound({url:wordSoundArray[index++]}); 
    if (index === wordSoundArray.length) 
      index = 0; 
    if (snd.isPlaying()) { 
     snd.stop(); 
     snd.play(); 
    } else { 
     snd.play(); 
    } 


}); 

当用户按下他们得到了一个新词，并以该字而来的声音的按钮。但是，如果用户在声音结束之前按下按钮，则只是开始新声音并且它们彼此重叠。这就是代码的snd.isPlaying部分来的地方。我很确定我的错误在那里。

Answer 1

所以你确实有死代码在这里：

var snd = Titanium.Media.createSound({url:wordSoundArray[index++]})); 
... 
// You just created the sound, so it will never be playing right off the bat 
if (snd.isPlaying()) { 
    // This will never be called 
    snd.stop(); 
    snd.play(); 
} else { 
    // This will happen every time the user clicks the button 
    snd.play(); 
} 

我认为它很好的做法，预加载你的所有的声音的资产开始执行之前，所以也许尝试用表格的条目替换您wordSoundArray：

wordSoundArray.push(Titanium.Media.createSound({url:'audio/the.mp3'}); 

一旦你做到了这一点（我们所有的声音资产预装，这将有利于记忆太），我们可以监听改变这样的事情：

在你的代码

newWordBtn.addEventListener("click", function(e){ 
    wordLabel.text = newWordArray[i++]; 
    if (i === newWordArray.length) 
      i = 0; 

    // Instead of creating the sound, just fetch it! 
    var snd = wordSoundArray[index++]; 

    if (index === wordSoundArray.length) 
      index = 0; 
    // Now this will work, but maybe you want to make sure all the sounds are off instead? 
    if (snd.isPlaying()) { 
     snd.stop(); 
     snd.play(); 
    } else { 
     snd.play(); 
    } 
}); 

展望虽然，它似乎要停止以前的声音播放，然后开始下一个，所以你需要改变监听到这一点：

newWordBtn.addEventListener("click", function(e){ 
    wordLabel.text = newWordArray[i++]; 
    if (i === newWordArray.length) 
      i = 0; 
    // Stop the last sound from playing 
    if(index > 0) { 
      var lastSound = wordSoundArray[index-1]; 
      lastSound.stop(); 
    } 

    // Instead of creating the sound, just fetch it! 
    var nextSound = wordSoundArray[index++]; 

    if (index === wordSoundArray.length) 
      index = 0; 
    // Play the next sound 
    nextSound.play(); 
});