当前时间与用户设置的时间匹配时播放音乐

Question

我正在尝试创建类似于闹钟的应用程序，但该应用程序要简单得多，并且会播放完整的歌曲曲目而不是短暂嘈杂的声音。我能够获得每秒更新的当前时间，并且我要求用户通过一系列旋钮来设置他们希望音乐开始播放的时间，分钟，秒和时间段。但是，我无法让它工作。

这里是我的尝试：

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_time_setter); 

    this.arraySpinner = new String[] { 
      "Song 1", "Song 2", "Song 3", "Song 4", "Song 5" 
    }; 

    this.hrSpin = new String[] { 
      "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12" 
    }; 

    this.minSpin = new String[] { 
      "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12", "13", "14", "15", 
      "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", 
      "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", 
      "46", "47", "48", "49", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "60" 
    }; 

    this.secSpin = new String[] { 
      "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12", "13", "14", "15", 
      "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", 
      "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", 
      "46", "47", "48", "49", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "60" 
    }; 

    this.perSpin = new String[] { 
      "AM", "PM" 
    }; 
    s = (Spinner) findViewById(R.id.songPicker); 
    hr = (Spinner) findViewById(R.id.hrSpinner); 
    min = (Spinner) findViewById(R.id.minSpinner); 
    sec = (Spinner) findViewById(R.id.secSpinner); 
    period = (Spinner) findViewById(R.id.periodSpinner); 
    submit = (Button)findViewById(R.id.subBtn); 

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, arraySpinner); 
    s.setAdapter(adapter); 

    ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, hrSpin); 
    hr.setAdapter(adapter1); 

    ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, minSpin); 
    min.setAdapter(adapter2); 

    ArrayAdapter<String> adapter3 = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, secSpin); 
    sec.setAdapter(adapter3); 

    ArrayAdapter<String> adapter4 = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, perSpin); 
    period.setAdapter(adapter4); 


    mediaPlayer = MediaPlayer.create(this, R.raw.test); 

    submit.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      df = new SimpleDateFormat("hh:mm:ss a"); 
      Thread t = new Thread() { 
       @Override 
       public void run() { 
        try { 
         while (!isInterrupted()) { 
          Thread.sleep(1000); 
          runOnUiThread(new Runnable() { 
           @Override 
           public void run() { 
            // update TextView here! 
            current_date = df.format(Calendar.getInstance().getTime()); 
            Toast.makeText(TimeSetter.this, "curr: "+current_date,Toast.LENGTH_LONG).show(); 

           } 
          }); 
         } 
        } catch (InterruptedException e) { 
        } 
       } 
      }; 
      t.start(); 
      new_date = hr.getSelectedItem().toString()+":"+min.getSelectedItem().toString()+":"+sec.getSelectedItem().toString() 
        + " " + period.getSelectedItem().toString(); 
      if(current_date.equals(new_date)) { 
       mediaPlayer.start(); 
      } 
     } 
    }); 

} 

我觉得这个问题是对的onClick方法的代码的定位。你对如何实现我的目标有任何建议吗？非常感谢你！

Answer 1

尝试，

SimpleDateFormat inputParser = new SimpleDateFormat(df, Locale.ENGLISH); 

new_date = parseDate(hr.getSelectedItem().toString()+":"+min.getSelectedItem().toString()+":"+sec.getSelectedItem().toString() 
          + " " + period.getSelectedItem().toString(); 

    currentDate= parseDate(current_date); 
    if(currentDate.equals(new_date);