使用索引播放基於數組元素的聲音

Question

我對android非常陌生，所以請原諒我的無知或無能。

我基本上試圖創建一個應用程序，通過在TextView上使用setText顯示隨機說法，從數組中獲取數據。然後我希望能夠匹配，併爲這個說法播放適當的音頻。

我會認爲這是通過查找數組中元素的索引並指定一個值使其與音頻文件匹配來完成的。

希望有道理！謝謝。

這是我到目前爲止有：

public class Sayings extends Activity implements OnClickListener { 


MediaPlayer mp; 

String[] sayings = {"Saying1", "Saying2", "Saying3", "Saying4", "Saying5"}; 


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

    Button btnRandom = (Button) findViewById(R.id.random_button); 
    Button btnNext = (Button) findViewById(R.id.next_button); 
    Button btnBack = (Button) findViewById(R.id.back_button); 

    btnRandom.setOnClickListener(this); 
    btnNext.setOnClickListener(this); 
    btnBack.setOnClickListener(this); 

} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.sayings, menu); 
    return true; 
} 

@Override 
public void onClick(View v) { 

    int resId = 0; 

    switch (v.getId()) { 

    case R.id.random_button: 
     RandomSaying(); 
     resId = R.raw.saying1; 
     break; 

    case R.id.next_button: 
     NextSaying(); 
     break; 

    case R.id.back_button: 
    BackSaying(); 
     break; 
    } 

    if (mp != null) { 

    mp.release(); 
    } 

    mp = MediaPlayer.create(this, resId); 
    mp.start(); 



    } 


public void RandomSaying() { 
    String randomSaying = (sayings[new Random().nextInt(sayings.length)]); 

    TextView sayingsTextView = (TextView) findViewById(R.id.displaySayings); 

    sayingsTextView.setText('"' + randomSaying + '"'); 

} 

Answer 1

你應該使用HashMap的字符串和資源ID之間的對應關係存儲：

HashMap<String, Integer> sayingsResIds = new HashMap<String, Integer>(); 

//when initializing your array sayings, put the corresponding ids : 
sayingsResId.put("saying1",R.raw.saying1); // do this for all your files 
// then get the resource id corresponding to your string , when choosing a random saying: 
resId = sayingsResIds.get(randomSaying);