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我設法在Blackberry中創建播放音頻文件的應用程序，但它只播放一個文件。我嘗試使用for循環播放一些音頻文件。如何在黑莓中連續播放音頻文件？
我設法播放它，但它沒有播放音頻文件的全部聲音，它只播放第一個音頻文件，然後播放幾秒鐘，然後停止播放。播放的文件也播放聲音彼此重疊，這不應該發生。
如何在黑莓中一個接一個地播放音頻文件的完整聲音而不停止？
這裏是我的，我與創建for循環的應用程序代碼：
package mypackage;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
import java.lang.Class;
import javax.microedition.rms.RecordStore;
import java.io.InputStream;
import java.io.ByteArrayInputStream;
import net.rim.device.api.media.protocol.ByteArrayInputStreamDataSource;
import net.rim.device.api.system.*;
import net.rim.device.api.ui.*;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.extension.container.*;
import net.rim.device.api.ui.UiApplication;
import java.io.IOException;
public class PlayMedia extends UiApplication{
/**
* Entry point for application
* @param args Command line arguments (not used)
*/
public static void main(String[] args){
PlayMedia theApp = new PlayMedia();
theApp.enterEventDispatcher();
}
public PlayMedia()
{
pushScreen(new PlayMediaScreen());
}
/**
* A class extending the MainScreen class, which provides default standard
* behavior for BlackBerry GUI applications.
*/
final class PlayMediaScreen extends MainScreen
{
/**
* Creates a new PlayMediaScreen object
*/
PlayMediaScreen()
{
String test1 = "Test(2seconds).mp3";
String test2 = "Test(2seconds)2.mp3";
String test3 = "Test(2seconds)3.mp3";
String test4 = "Test(2seconds)4.mp3";
String test5 = "blind_willie.mp3";
String mp3 = null;
for(int i=0;i<5;i++){
if(i == 0){
mp3 = test1;
}
else if(i == 1){
mp3 = test2;
}
else if(i == 2){
mp3 = test3;
}
else if(i == 3){
mp3 = test4;
}
else if(i == 4){
mp3 = test5;
}
play(mp3);
}
}
private void play(String mp3){
Player p = null;
InputStream stream = (InputStream)this.getClass().getResourceAsStream("/" + mp3);
try {
//p = Manager.createPlayer(source);
p = Manager.createPlayer(stream, "audio/mpeg");
p.realize();
p.prefetch();
//testing
System.out.println("Creating Players!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
System.out.println("The mp3 is " + mp3 + "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//testing
System.out.println("IO Exeception!!!!!!!!!!!!!!!!1 " + e);
//testing
System.out.println(p);
} catch (MediaException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//testing
System.out.println("Media Exeception!!!!!!!!!!!!!!!!1" + e);
//testing
System.out.println(p);
}
/*
* Best practice is to invoke realize(), then prefetch(), then start().
* Following this sequence reduces delays in starting media playback.
*
* Invoking start() as shown below will cause start() to invoke prefetch(0),
* which invokes realize() before media playback is started.
*/
try {
p.start();
} catch (MediaException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//testing
System.out.println("Media Exeception for starting!!!!!!!!!!!!!!!!1" + e);
//testing
System.out.println(p);
}
/*try {
p.stop();
} catch (MediaException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
//p.deallocate();
//p.close();
}
}
}
任何人都可以幫助我!!!!我需要明天完成！ – TEN