如何修改此设置，以便如果一个声音已经在播放并且单击了另一个声音，则前一个声音停止播放并开始新选择的声音？提前感谢大家的帮助。 (这不是全部代码，只是最重要的)
public class newBoard extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
Toast.makeText(this, "Thank you for using this App.", Toast.LENGTH_LONG).show();
// ads - load request to display
AdView layout = (AdView)this.findViewById(R.id.adView);
// ads - load display with an ad
AdRequest adRequest = new AdRequest();
adRequest.setTesting(true);
layout.loadAd(adRequest);
// import sound files
final MediaPlayer sound01 = MediaPlayer.create(this, R.raw.sound01);
final MediaPlayer sound02 = MediaPlayer.create(this, R.raw.sound02);
final MediaPlayer sound03 = MediaPlayer.create(this, R.raw.sound03);
final MediaPlayer sound04 = MediaPlayer.create(this, R.raw.sound04);
final MediaPlayer sound05 = MediaPlayer.create(this, R.raw.sound05);
final MediaPlayer sound06 = MediaPlayer.create(this, R.raw.sound06);
final MediaPlayer sound07 = MediaPlayer.create(this, R.raw.sound07);
final MediaPlayer sound08 = MediaPlayer.create(this, R.raw.sound08);
final MediaPlayer sound09 = MediaPlayer.create(this, R.raw.sound09);
final MediaPlayer sound10 = MediaPlayer.create(this, R.raw.sound10);
final MediaPlayer sound11 = MediaPlayer.create(this, R.raw.sound11);
final MediaPlayer sound12 = MediaPlayer.create(this, R.raw.sound12);
final MediaPlayer sound13 = MediaPlayer.create(this, R.raw.sound13);
final MediaPlayer sound14 = MediaPlayer.create(this, R.raw.sound14);
final MediaPlayer sound15 = MediaPlayer.create(this, R.raw.sound15);
final MediaPlayer sound16 = MediaPlayer.create(this, R.raw.sound16);
final MediaPlayer sound17 = MediaPlayer.create(this, R.raw.sound17);
final MediaPlayer sound18 = MediaPlayer.create(this, R.raw.sound18);
final MediaPlayer sound19 = MediaPlayer.create(this, R.raw.sound19);
final MediaPlayer sound20 = MediaPlayer.create(this, R.raw.sound20);
final MediaPlayer sound21 = MediaPlayer.create(this, R.raw.sound21);
final MediaPlayer sound22 = MediaPlayer.create(this, R.raw.sound22);
final MediaPlayer sound23 = MediaPlayer.create(this, R.raw.sound23);
final MediaPlayer sound24 = MediaPlayer.create(this, R.raw.sound24);
final MediaPlayer sound25 = MediaPlayer.create(this, R.raw.sound25);
// play sound files on clicks
Button s01 = (Button) findViewById(R.id.button01);
s01.setText(this.getString(R.string.quote01));
s01.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
sound01.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sound01.start();
}
});
registerForContextMenu(s01);
Button s02 = (Button) findViewById(R.id.button02);
s02.setText(this.getString(R.string.quote02));
s02.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
sound02.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sound02.start();
}
});
registerForContextMenu(s02);
Button s03 = (Button) findViewById(R.id.button03);
s03.setText(this.getString(R.string.quote03));
s03.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
sound03.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sound03.start();
}
});
registerForContextMenu(s03);
Button s04 = (Button) findViewById(R.id.button04);
s04.setText(this.getString(R.string.quote04));
s04.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
sound04.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sound04.start();
}
});
registerForContextMenu(s04);
Button s05 = (Button) findViewById(R.id.button05);
s05.setText(this.getString(R.string.quote05));
s05.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
sound05.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sound05.start();
}
});
registerForContextMenu(s05);
Button s06 = (Button) findViewById(R.id.button06);
s06.setText(this.getString(R.string.quote06));
s06.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
sound06.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sound06.start();
}
});
registerForContextMenu(s06);
最佳答案
使用对象成员变量来保存当前播放的声音，以便您可以调用 stop() 并且不要忘记对其进行空检查。离开 Activity 后，不要忘记 release() 您的 MediaPlayer 对象。
以下可能是更好的设计:将所有音频文件移动到资源目录并将文件名放在按钮的标签中，使用相同的单击事件处理程序来获取一个 MediaPlayer 对象的状态，如果它当前正在播放，从按钮的标签设置要播放的新文件并播放该文件。这将显着减少重复代码。
关于java - 在android音板中，如何使一种声音在点击另一种声音后停止播放？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11731107/