i have a video file in my external directory. how can i load it to inputstream variable. For the time being i am reading file in the res/raw folder but i want to read it from the sdcard. also i dont know about the name of the file but its path will be recieved through intent. check the following code
public class SonicTest extends Activity { VideoView videoView; String uri; InputStream soundFile; File file; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } public void play(View view) { new Thread(new Runnable() { public void run() { float speed= (float) 1.0; float pitch= (float) 1.5; float rate= (float) 1.0; uri= Environment.getExternalStorageDirectory().toString(); uri=uri+"/video.3gp"; AndroidAudioDevice device = new AndroidAudioDevice(22050, 1); Sonic sonic = new Sonic(22050, 1); byte samples[] = new byte[4096]; byte modifiedSamples[] = new byte[2048]; InputStream soundFile = null; //soundFile = getContentResolver().openInputStream(Uri.parse(uri)); soundFile=getResources().openRawResource(R.raw.video3); Log.i("testing","check if SoundFile is correct "+soundFile); int bytesRead; if(soundFile != null) { sonic.setSpeed(speed); sonic.setPitch(pitch); sonic.setRate(rate); do { try { bytesRead = soundFile.read(samples, 0, samples.length); } catch (IOException e) { e.printStackTrace(); return; } if(bytesRead > 0) { sonic.putBytes(samples, bytesRead); } else { sonic.flush(); } int available = sonic.availableBytes(); if(available > 0) { if(modifiedSamples.length < available) { modifiedSamples = new byte[available*2]; } sonic.receiveBytes(modifiedSamples, available); device.writeSamples(modifiedSamples, available); } } while(bytesRead > 0); device.flush(); } } } ).start(); }}
There is no real difference. FileInputStream extends InputStream , and so you can assign an InputStream object to be a FileInputStream object. In the end, it's the same object, so the same operations will happen. This behavior is called Polymorphism and is very important in Object-Oriented Programming.
FileInputStream is meant for reading streams of raw bytes such as image data. For reading streams of characters, consider using FileReader . Since: JDK1.0. See Also: File , FileDescriptor , FileOutputStream , Files.
Try
File file = new File(Uri.toString()); FileInputStream fileInputStream = new FileInputStream(file);
Then you can read from the stream.
String fileName = "OfflineMap/maps.xml"; String path = Environment.getExternalStorageDirectory()+"/"+fileName; File file = new File(path); FileInputStream fileInputStream = new FileInputStream(file);
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