Question

我正在制作音板，当用户点击按钮时，应播放声音字节。我非常确定我的代码中的逻辑是正确的，因为我在for循环中搜索了一个错误，因此将声音设置为每个按钮。出于某种原因，屏幕上始终只有一个随机按钮在单击时没有播放其声音，并且每次运行代码时，不起作用的按钮都会发生变化。我认为这是我的XML中的错误，因为每次我更改XML以尝试修复它时，不同的按钮就是不起作用的。

<?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

您没有常见的实现，但在开始新声音之前，请停止在任何MediaPlayer中进行复制：

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

然后在start（）之前使用方法prepare（）：

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

我认为您的问题是您正在同时创建多个MediaPlayers但是您必须在开始重现新的＆＃34;声音之前停止播放＃34;与另一个MediaPlayer。

由于布局错误，单击按钮时Android播放声音不正常

1 个答案: