我想从 url 流式传输音频(mp3)/视频(mp4)文件，还想设置搜索栏，以便用户可以按时间搜索歌曲。如果用户搜索歌曲，则应该从该歌曲开始播放。我能够从 url 流式传输和播放文件，但无法添加搜索栏来实现查看功能。任何示例或任何帮助。
提前致谢
最佳答案
我已经创建了一个演示项目，我认为它会对你有所帮助
这是 Activity 课
public class VideoViewDemoProj extends Activity {
private static final String TAG = "VideoViewDemo";
private VideoView mVideoView;
private EditText mPath;
private ImageButton mPlay;
private ImageButton mPause;
private ImageButton mReset;
private ImageButton mStop;
private String current;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
mVideoView = (VideoView) findViewById(R.id.surface_view);
mPath = (EditText) findViewById(R.id.path);
// mPath.setText("http://logisticinfotech.com/extra/Veer.mp4");
// mPath.setText("http://www.youtube.com/watch?v=rkOySwlEtVk&feature=youtube_gdata_player");
mPath.setText("http://logisticinfotech.com/client/full-volume.mp4");
mPlay = (ImageButton) findViewById(R.id.play);
mPause = (ImageButton) findViewById(R.id.pause);
mReset = (ImageButton) findViewById(R.id.reset);
mStop = (ImageButton) findViewById(R.id.stop);
mPlay.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
playVideo();
}
});
mPause.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (mVideoView != null) {
mVideoView.pause();
}
}
});
mReset.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (mVideoView != null) {
mVideoView.seekTo(0);
}
}
});
mStop.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (mVideoView != null) {
current = null;
mVideoView.stopPlayback();
}
}
});
runOnUiThread(new Runnable(){
public void run() {
playVideo();
}
});
}
private void playVideo() {
try {
final String path = mPath.getText().toString();
System.out.println("path --> "+path);
Log.v(TAG, "path: " + path);
if (path == null || path.length() == 0) {
Toast.makeText(VideoViewDemoProj.this, "File URL/path is empty",
Toast.LENGTH_LONG).show();
} else {
// If the path has not changed, just start the media player
if (path.equals(current) && mVideoView != null) {
mVideoView.start();
mVideoView.requestFocus();
return;
}
current = path;
System.out.println("Current path --> "+path);
mVideoView.setVideoPath(getDataSource(path));
mVideoView.start();
mVideoView.requestFocus();
System.out.println("end try in play");
}
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
if (mVideoView != null) {
mVideoView.stopPlayback();
}
}
}
private String getDataSource(String path) throws IOException {
if (!URLUtil.isNetworkUrl(path)) {
return path;
} else {
URL url = new URL(path);
URLConnection cn = url.openConnection();
cn.connect();
InputStream stream = cn.getInputStream();
if (stream == null)
throw new RuntimeException("stream is null");
File temp = File.createTempFile("mediaplayertmp", "mp4");
System.out.println("hi");
temp.deleteOnExit();
String tempPath = temp.getAbsolutePath();
FileOutputStream out = new FileOutputStream(temp);
byte buf[] = new byte[128];
do {
int numread = stream.read(buf);
if (numread <= 0)
break;
out.write(buf, 0, numread);
} while (true);
try {
stream.close();
} catch (IOException ex) {
Log.e(TAG, "error: " + ex.getMessage(), ex);
}
return tempPath;
}
}
}
XML 文件如下
<?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"
>
<EditText android:id="@+id/path"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<VideoView android:id="@+id/surface_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</VideoView>
<LinearLayout
android:orientation="horizontal"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
>
<ImageButton android:id="@+id/play"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/play"/>
<ImageButton android:id="@+id/pause"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/pause"/>
<ImageButton android:id="@+id/reset"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/reset"/>
<ImageButton android:id="@+id/stop"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/stop"/>
</LinearLayout>
</LinearLayout>
在AndroidManifest.xml文件中添加以下权限
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
关于android - 从android中的url流式传输音频/视频文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7453967/