我有代码要播放一个
.ogg
的音频文件，是我从网上下载的。我没有错误，所以我可以运行它，但随后应用程序崩溃了。
package play.my.sound;
import android.app.Activity;
import android.media.AudioManager;
import android.media.SoundPool;
import android.media.SoundPool.OnLoadCompleteListener;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
public class PlaySound2Activity extends Activity {
private SoundPool soundPool;
private int soundID;
boolean loaded = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
View view = findViewById(R.id.textView1);
view.setOnClickListener((OnClickListener) this);
// Set the hardware buttons to control the music
this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
// Load the sound
soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
soundPool.setOnLoadCompleteListener(new OnLoadCompleteListener() {
public void onLoadComplete(SoundPool soundPool, int sampleId,
int status) {
loaded = true;
soundID = soundPool.load("sound1.ogg", 1);
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// Getting the user sound settings
AudioManager audioManager = (AudioManager) getSystemService (AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
// Is the sound loaded already?
if (loaded) {
soundPool.play(soundID, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
return false;
我想我有两个问题。
I put this in the main.xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:text="Click on the screen to start playing"
android:id="@+id/textView1" android:layout_width="fill_parent"
android:layout_height="fill_parent"></TextView>
</LinearLayout>
And I don't know if it's correct.
我把文件
sound1.ogg
放在
workspace->SoundPlay2
文件夹里，因为在res文件夹里我遇到了问题，而且，我还试图把它放在存在的两个res文件夹里。
This is from my console:
[2012-01-04 19:38:16 - PlaySound2] Failed to install PlaySound2.apk on device 'emulator-5554': timeout
[2012-01-04 19:38:16 - PlaySound2] Launch canceled!
[2012-01-04 19:47:33 - PlaySound2] Error in an XML file: aborting build.
[2012-01-04 19:52:34 - PlaySound2] res\layout\main.xml:0: error: Resource entry main is already defined.
[2012-01-04 19:52:34 - PlaySound2] res\layout\main.out.xml:0: Originally defined here.
[2012-01-04 19:52:34 - PlaySound2] C:\Users\Natalia\workspace\PlaySound2\res\layout\main.out.xml:1: error: Error parsing XML: no element found
我从""中提取了这个例子。安卓声音 - 教程".
我想播放一个音频文件，更确切地说，是一个.wav文件。
我不知道在哪里可以找到一些关于允许在MediaPlayer类中使用的文件及其特征（持续时间、采样率......）的信息，你能告诉我在哪里可以找到这些信息么？
