由於佈局錯誤點擊按鈕時，Android聲音不會播放

Question

我正在製作音板，當用戶單擊按鈕時，聲音字節應該播放。我非常確定，我的代碼中的邏輯是正確的，因爲我在for循環中搜索了一個錯誤，所以將聲音設置爲每個按鈕都是正確的。出於某種原因，屏幕上總是隻有一個隨機按鈕，點擊時不會播放聲音，每次運行代碼時都不會改變按鈕。我認爲它是我的XML中的一個錯誤，因爲每次我更改XML以嘗試修復它時，不同的按鈕就是不起作用的按鈕。

<?xml version="1.0" encoding="utf-8"?> 

<RelativeLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
tools:context="com.example.ben.soundboard.MainActivity" 


> 

<ImageButton 
    android:id="@+id/button1" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 

    android:layout_alignTop="@+id/button2" 
    android:layout_alignStart="@+id/button4" /> 
<ImageButton 
    android:id="@+id/button2" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 

    android:layout_alignTop="@+id/button3" 
    android:layout_alignStart="@+id/button5" /> 
<ImageButton 
    android:id="@+id/button3" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:layout_alignStart="@+id/button6" 
    android:layout_marginTop="93dp" /> 

<ImageButton 
    android:id="@+id/button4" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 

    android:layout_alignTop="@+id/button5" 
    android:layout_alignStart="@+id/button7" /> 
<ImageButton 
    android:id="@+id/button5" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:layout_alignTop="@+id/button6" 
    android:layout_alignStart="@+id/button8" /> 
<ImageButton 
    android:id="@+id/button6" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:layout_centerVertical="true" 
    android:layout_alignStart="@+id/button9" /> 
<ImageButton 
    android:id="@+id/button7" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:layout_alignTop="@+id/button8" 
    android:layout_marginStart="38dp" /> 
<ImageButton 
    android:id="@+id/button8" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:layout_alignTop="@+id/button9" 
    android:layout_centerHorizontal="true" /> 
<ImageButton 
    android:id="@+id/button9" 
    android:layout_height="wrap_content" 
    android:layout_width="wrap_content" 
    android:layout_marginEnd="49dp" 
    android:layout_marginBottom="106dp" 
    android:layout_alignParentBottom="true" 
    android:layout_alignParentEnd="true" /> 

public class MainActivity extends AppCompatActivity 
{ 

@Override 
protected void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    MediaPlayer ohBaby = MediaPlayer.create(this,R.raw.oh_baby); 
    MediaPlayer fourTwentySount = MediaPlayer.create(this,R.raw.four_twenty); 
    MediaPlayer anotherOne = MediaPlayer.create(this,R.raw.another_one); 
    MediaPlayer terrorist_win = MediaPlayer.create(this,R.raw.terrorists_win); 
    MediaPlayer allahu_akbar = MediaPlayer.create(this,R.raw.allahu_akbar); 
    MediaPlayer cough = MediaPlayer.create(this,R.raw.cough); 
    MediaPlayer that_was_easy = MediaPlayer.create(this,R.raw.that_was_easy); 
    MediaPlayer horn = MediaPlayer.create(this,R.raw.horn); 
    MediaPlayer ethan_bradberry = MediaPlayer.create(this,R.raw.im_ethan_bradberry); 
    MediaPlayer[] sounds = {ohBaby,fourTwentySount,anotherOne,terrorist_win,allahu_akbar,cough,that_was_easy,horn,ethan_bradberry}; 

    ImageButton button1 = (ImageButton) findViewById(R.id.button1); 
    ImageButton button2 = (ImageButton) findViewById(R.id.button2); 
    ImageButton button3 = (ImageButton) findViewById(R.id.button3); 
    ImageButton button4 = (ImageButton) findViewById(R.id.button4); 
    ImageButton button5 = (ImageButton) findViewById(R.id.button5); 
    ImageButton button6 = (ImageButton) findViewById(R.id.button6); 
    ImageButton button7 = (ImageButton) findViewById(R.id.button7); 
    ImageButton button8 = (ImageButton) findViewById(R.id.button8); 
    ImageButton button9 = (ImageButton) findViewById(R.id.button9); 
    ImageButton[] buttons = {button1,button2,button3,button4,button5,button6,button7,button8,button9}; 

    for (int i = 0; i < 9;i++) { 
     buttons[i].setImageResource(R.drawable.ic_action_name); 
     setButtonSound(buttons[i],sounds[i]); 
    } 

} 
public void setButtonSound(ImageButton btn, final MediaPlayer sound) 
{ 
    btn.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      sound.start(); 
     } 
    }); 
} 

}

Answer 1

你有沒有一個共同的實現，但在此之前開始一個新的聲音，停止再現任何的MediaPlayer：

for (int i = 0; i < 9;i++) { 
     sounds[i].stop(); 
} 

然後用方法prepare（）在start（）之前：

sound.prepare(); 
sound.start(); 

我認爲您的問題是您同時創建了多個MediaPlayers，但您必須在開始使用另一個MediaPlayer重現新的「聲音」之前停止播放。