我创建了音板和代码编译，它只是不会创建任何声音或播放mp3，我在哪里编码错误，因为它不会从任何地方开始。
import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class SplashActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Button next = (Button) findViewById(R.id.Button01);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), Activity2.class);
startActivityForResult(myIntent, 0);
}
});
}
public class Bluarg extends Activity implements OnClickListener{
MediaPlayer mp1;
MediaPlayer mp2;
MediaPlayer mp3;
MediaPlayer mp4;
MediaPlayer mp5;
MediaPlayer mp6;
MediaPlayer mp7;
MediaPlayer mp8;
MediaPlayer mp9;
MediaPlayer mp10;
MediaPlayer mp11;
MediaPlayer mp12;
MediaPlayer mp13;
MediaPlayer mp14;
MediaPlayer mp15;
MediaPlayer mp16;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mp1 = MediaPlayer.create(this, R.raw.deb1);
mp2 = MediaPlayer.create(this, R.raw.deb2);
mp3 = MediaPlayer.create(this, R.raw.deb3);
mp4 = MediaPlayer.create(this, R.raw.deb4);
mp5 = MediaPlayer.create(this, R.raw.deb5);
mp6 = MediaPlayer.create(this, R.raw.deb6);
mp7 = MediaPlayer.create(this, R.raw.deb7);
mp8 = MediaPlayer.create(this, R.raw.deb8);
mp9 = MediaPlayer.create(this, R.raw.deb9);
mp10 = MediaPlayer.create(this, R.raw.deb10);
mp11 = MediaPlayer.create(this, R.raw.deb11);
mp12 = MediaPlayer.create(this, R.raw.deb12);
mp13 = MediaPlayer.create(this, R.raw.deb13);
mp14 = MediaPlayer.create(this, R.raw.deb14);
mp15 = MediaPlayer.create(this, R.raw.deb15);
mp16 = MediaPlayer.create(this, R.raw.deb16);
final Button button2 = (Button) findViewById(R.id.Button02);
button2.setOnClickListener(this);
final Button button3 = (Button) findViewById(R.id.Button03);
button3.setOnClickListener(this);
final Button button4 = (Button) findViewById(R.id.Button04);
button4.setOnClickListener (this);
final Button button5 = (Button) findViewById(R.id.Button05);
button5.setOnClickListener (this);
final Button button6 = (Button) findViewById(R.id.Button06);
button6.setOnClickListener (this);
final Button button7 = (Button) findViewById(R.id.Button07);
button7.setOnClickListener (this);
final Button button8 = (Button) findViewById(R.id.Button08);
button8.setOnClickListener (this);
final Button button9 = (Button) findViewById(R.id.Button09);
button9.setOnClickListener (this);
final Button button10 = (Button) findViewById(R.id.Button10);
button10.setOnClickListener (this);
final Button button11 = (Button) findViewById(R.id.Button11);
button11.setOnClickListener (this);
final Button button12 = (Button) findViewById(R.id.Button12);
button12.setOnClickListener (this);
final Button button13 = (Button) findViewById(R.id.Button13);
button13.setOnClickListener (this);
final Button button14 = (Button) findViewById(R.id.Button14);
button14.setOnClickListener (this);
final Button button15 = (Button) findViewById(R.id.Button15);
button15.setOnClickListener (this);
final Button button16 = (Button) findViewById(R.id.Button16);
button16.setOnClickListener (this);
final Button button17 = (Button) findViewById(R.id.Button17);
button17.setOnClickListener (this);
}
@Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.Button02:
mp1.start();
break;
case R.id.Button03:
mp2.start();
break;
case R.id.Button04:
mp3.start();
break;
case R.id.Button05:
mp4.start();
break;
case R.id.Button06:
mp5.start();
break;
case R.id.Button07:
mp6.start();
break;
case R.id.Button08:
mp7.start();
break;
case R.id.Button09:
mp8.start();
break;
case R.id.Button10:
mp9.start();
break;
case R.id.Button11:
mp10.start();
break;
case R.id.Button12:
mp11.start();
break;
case R.id.Button13:
mp12.start();
break;
case R.id.Button14:
mp13.start();
break;
case R.id.Button15:
mp14.start();
break;
case R.id.Button16:
mp15.start();
break;
case R.id.Button17:
mp16.start();
break;
}
}
@Override
protected void onDestroy() {
mp1.release();
mp2.release();
mp3.release();
mp4.release();
mp5.release();
mp6.release();
mp7.release();
mp8.release();
mp9.release();
mp10.release();
mp11.release();
mp12.release();
mp13.release();
mp14.release();
mp15.release();
mp16.release();
super.onDestroy();
}
}
}
答案 0 :(得分：3)
当您创建太多MediaPlayer对象时，我发现这是一个问题。这里有一个很多的冗余代码。除了使用一些循环来删除90％的代码之外，请尝试使用类似这样的内容来代替您当前拥有的MediaPlayers：
//outside onCreate(), where you have your MPs now
MediaPlayer mp;
Resources resources;
//inside onCreate()
mp = new MediaPlayer();
resources = getResources();
int[] rawIds = {
R.raw.deb1, R.raw.deb2,
R.raw.deb3, R.raw.deb4,
R.raw.deb5, R.raw.deb6,
R.raw.deb7, R.raw.deb8,
R.raw.deb9, R.raw.deb10,
R.raw.deb11, R.raw.deb12,
R.raw.deb13, R.raw.deb14,
R.raw.deb15, R.raw.deb16
};
int[] buttonIds = {
R.id.Button02, R.id.Button03,
R.id.Button04, R.id.Button05,
R.id.Button06, R.id.Button07,
R.id.Button08, R.id.Button09,
R.id.Button10, R.id.Button11,
R.id.Button12, R.id.Button13,
R.id.Button14, R.id.Button15,
R.id.Button16, R.id.Button17
};
//this can replace your whole Button assignment portion
for (int i : buttonIds) {
Button b = (Button)findViewById(i);
b.setOnClickListener(this);
}
//in your onClick(). Might be a better way to do this than looping through
//all of the ids, but this should still be quick, and much less code.
for (int i = 0, i < buttonIds.length; i++) {
//if the button being clicked is e.g. Button02...
if(v.getId() == buttonIds[i]) {
//get the file descriptor for your Raw Resource associated with Button02...
AssetFileDescriptor afd = resources.openRawResourceFd(rawIds[i]);
//in case it's not in the ready state...
mp.reset();
//and set the mediaPlayer's data source, prepare it, and begin
mp.setDataSource(afd.getDescriptor(), afd.getStartOffset(), afd.getLength());
mp.prepare();
mp.start();
break;
}
}