Android在线广播流媒体应用

时间:2011-06-08 18:38:14

标签: java android eclipse audio media-player

我正在构建一个Android应用程序,它将从拉丁国家流式传输多个电台,我知道可以在android中播放10个电台,我从他们那里得到了URL,并且实际上使用了本教程(链接被删除,因为它已经死了)但我遇到的问题是它播放了几秒钟然后停止它继续加载但不重启流式传输,我的问题:

  • 如果有人使用过本教程,可以解释如何让它不断流动而不停止。
  • 是否有更简单的方法来播放无线电音频?这个教程看起来有点陈旧,是否有更新的教程或更新的代码示例供学习或使用?
  • 有人能以正确的方式送我吗?

3 个答案:

答案 0 :(得分:61)

所以我找到了这个样本,它对我有用,如果你遇到同样的问题,那就是:

在myMain.java中

import android.app.Activity;
import android.os.Bundle;

import java.io.IOException;

import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;

public class myMain extends Activity implements OnClickListener {

    private ProgressBar playSeekBar;

    private Button buttonPlay;

    private Button buttonStopPlay;

    private MediaPlayer player;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        initializeUIElements();

        initializeMediaPlayer();
    }

    private void initializeUIElements() {

        playSeekBar = (ProgressBar) findViewById(R.id.progressBar1);
        playSeekBar.setMax(100);
        playSeekBar.setVisibility(View.INVISIBLE);

        buttonPlay = (Button) findViewById(R.id.buttonPlay);
        buttonPlay.setOnClickListener(this);

        buttonStopPlay = (Button) findViewById(R.id.buttonStopPlay);
        buttonStopPlay.setEnabled(false);
        buttonStopPlay.setOnClickListener(this);

    }

    public void onClick(View v) {
        if (v == buttonPlay) {
            startPlaying();
        } else if (v == buttonStopPlay) {
            stopPlaying();
        }
    }

    private void startPlaying() {
        buttonStopPlay.setEnabled(true);
        buttonPlay.setEnabled(false);

        playSeekBar.setVisibility(View.VISIBLE);

        player.prepareAsync();

        player.setOnPreparedListener(new OnPreparedListener() {

            public void onPrepared(MediaPlayer mp) {
                player.start();
            }
        });

    }

    private void stopPlaying() {
        if (player.isPlaying()) {
            player.stop();
            player.release();
            initializeMediaPlayer();
        }

        buttonPlay.setEnabled(true);
        buttonStopPlay.setEnabled(false);
        playSeekBar.setVisibility(View.INVISIBLE);
    }

    private void initializeMediaPlayer() {
        player = new MediaPlayer();
        try {
            player.setDataSource("http://usa8-vn.mixstream.net:8138");
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        player.setOnBufferingUpdateListener(new OnBufferingUpdateListener() {

            public void onBufferingUpdate(MediaPlayer mp, int percent) {
                playSeekBar.setSecondaryProgress(percent);
                Log.i("Buffering", "" + percent);
            }
        });
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (player.isPlaying()) {
            player.stop();
        }
    }
}

在XML(main.xml)代码中:

<?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:layout_width="fill_parent"
        android:layout_height="wrap_content" android:text="Source: (Radio La Chevere)"
        android:layout_marginTop="10dip" android:gravity="center" />
<ProgressBar android:id="@+id/progressBar1"
        android:indeterminateOnly="false" android:progressDrawable="@android:drawable/progress_horizontal"
        android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
        android:minHeight="20dip" android:maxHeight="20dip"
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:layout_marginLeft="20dip" android:layout_marginRight="20dip"
        android:layout_marginTop="10dip"></ProgressBar>
<LinearLayout android:id="@+id/linearLayout1"
        android:layout_height="wrap_content" android:layout_width="match_parent"
        android:layout_marginTop="20dip" android:gravity="center">
        <Button android:text="Play" android:id="@+id/buttonPlay"
                android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
        <Button android:text="Stop" android:id="@+id/buttonStopPlay"
                android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>
</LinearLayout>

和android清单:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="package.your.RadioStream"
  android:versionCode="1"
  android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.INTERNET"></uses-permission>

<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".myMain"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

</application>

答案 1 :(得分:4)

好吧,如果你期望一个进度条,你会得到令人失望的,这是一个流,默认情况下没有时间结束是无止境的。关于URL,您可以使用shoutcast2 / icecast服务器中的挂载点和shoutcast1中的/。

答案 2 :(得分:1)

在onResume或wrvr你想要的!粘贴此代码。

    String url = "http://server2.crearradio.com:8371"; // your URL here
    final MediaPlayer mediaPlayer = new MediaPlayer();
    mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    try {
        mediaPlayer.setDataSource(url);
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        mediaPlayer.prepare(); // might take long! (for buffering, etc)
    } catch (IOException e) {
        e.printStackTrace();
    }
    mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

        public void onPrepared(MediaPlayer mp) {
            mediaPlayer.start();
        }
    });

在manifest.xml中添加Internet权限。

<uses-permission android:name="android.permission.INTERNET"></uses-permission>