在Android Studio中输出声音后添加延迟

Question

我目前正在编写我的第一个Android应用程序。我正在解析一个字符串并将值传递给一个开关。

传入开关的值输出相应的声音。问题是它会同时输出所有声音，相互重叠。

在声音播放后是否还有一点延迟才能阻止这种情况发生？

 for(int j =0; j<resultString.length(); j++)
    {
     int i = resultString.charAt(j);
    switch(i) {
        case '1':
            one.start(); 
            break;
        case '2':
            two.start();
            break;
        case '3':
            three.start();
            break;
        case '4':
            four.start();
            break;
        case '5':
            five.start();
            break;
        case '6':
            six.start();
            break;
        case '7':
            seven.start();
            break;
        case '8':
            eight.start();
            break;
        case '9':
            nine.start();
            break;
        case '0':
            zero.start();
            break;
        case '.':
            j=resultString.length();
            break;
    }
}

以上是我的代码与此问题有关。如果需要更多代码等，请告诉我。

编辑：

我现在已经使用以下代码：

这是一种不好的方式吗？

private void readAnswer() {
    long startTime;
    for(int j =0; j<resultString.length(); j++)
    {
     int i = resultString.charAt(j);
    switch(i) {
        case '1':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < one.getDuration()) {
                one.start();
            }
            break;
        case '2':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < two.getDuration()) {
                two.start();
            }
            break;
        case '3':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < three.getDuration()) {
                three.start();
            }
            break;
        case '4':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < four.getDuration()) {
                four.start();
            }
            break;
        case '5':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < five.getDuration()) {
                five.start();
            }
            break;
        case '6':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < six.getDuration()) {
                six.start();
            }
            break;
        case '7':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < seven.getDuration()) {
                seven.start();
            }
            break;
        case '8':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < eight.getDuration()) {
                eight.start();
            }
            break;
        case '9':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < nine.getDuration()) {
                nine.start();
            }
            break;
        case '0':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < zero.getDuration()) {
                zero.start();
            }
            break;
        case '.':
            j=resultString.length();
            break;
    }


    }
}

Answer 1

试试这段代码

for(int j =0; j<resultString.length(); j++)
{
    int i = resultString.charAt(j);
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            switch(i) {
                case '1':
                    one.start();
                    break;
                case '2':
                    two.start();
                    break;
                case '3':
                    three.start();
                    break;
                case '4':
                    four.start();
                    break;
                case '5':
                    five.start();
                    break;
                case '6':
                    six.start();
                    break;
                case '7':
                    seven.start();
                    break;
                case '8':
                    eight.start();
                    break;
                case '9':
                    nine.start();
                    break;
                case '0':
                    zero.start();
                    break;
                case '.':
                    j=resultString.length();
                    break;
            }

        }
    },300*j);

}

其中300以毫秒为单位，这将每次增加300毫秒的延迟

Answer 2

您只需在代码中添加延迟方法即可。有三种最常见的方法来实现目标。

1. 将您的代码放在一个线程中并使用Thread.sleep（）。

new Thread() {
  @Overrride
  public void run() {
      super.run();
      Thread.sleep(time); // the time is how long you need to delay
      // TODO: your code
  }
}

1. Handler.postDelay就像第一个答案一样。

new Handler().postDelay(
  new Runnable() {
      public void run() {
          // TODO: your code
      }
  }, time);  // time is how long your need delay

1. 使用定时器设置延迟代码

TimerTask task = new TimerTask(){  
    public void run(){  
    //execute the task   
    }  
};  
Timer timer = new Timer();
timer.schedule(task, delay);

Answer 3

我已经使用以下代码似乎运行良好，但是这样做会不会导致错误？

private void readAnswer() {
    long startTime;
    for(int j =0; j<resultString.length(); j++)
    {
     int i = resultString.charAt(j);
    switch(i) {
        case '1':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < one.getDuration()) {
                one.start();
            }
            break;
        case '2':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < two.getDuration()) {
                two.start();
            }
            break;
        case '3':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < three.getDuration()) {
                three.start();
            }
            break;
        case '4':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < four.getDuration()) {
                four.start();
            }
            break;
        case '5':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < five.getDuration()) {
                five.start();
            }
            break;
        case '6':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < six.getDuration()) {
                six.start();
            }
            break;
        case '7':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < seven.getDuration()) {
                seven.start();
            }
            break;
        case '8':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < eight.getDuration()) {
                eight.start();
            }
            break;
        case '9':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < nine.getDuration()) {
                nine.start();
            }
            break;
        case '0':
            startTime =  System.currentTimeMillis();
            while (System.currentTimeMillis() - startTime < zero.getDuration()) {
                zero.start();
            }
            break;
        case '.':
            j=resultString.length();
            break;
    }


    }
}