I am new to Android Development, and I want to create an App which stores data in a file, and then reads the Data from the file. For that I have created 2 Tabs. Tab1 shows the form to enter data. And Tab2 shows the saved data.
FragmentTab1.java
package com.adhish.pagertabstriptutorial;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.Toast;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
public class FragmentTab1 extends Fragment implements View.OnClickListener {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Get the view from fragmenttab1.xml
//first inflate the view.
View v = inflater.inflate(R.layout.fragmenttab1, container, false);
//then access the elements
v.findViewById(R.id.button1).setOnClickListener(this);
//then return the view
return v;
}
#Override
public void onClick(View view)
{
if(view == getView().findViewById(R.id.button1))
{
//Call all the elements of this Fragment here becuase they are accessible easily through
//getView(); method. Use the getText(); method to get the Text and toString(); to convert
//it.
String name = ((EditText)getView().findViewById(R.id.name)).getText().toString();
String email = ((EditText)getView().findViewById(R.id.email)).getText().toString();
if(name.isEmpty() || email.isEmpty())
{
Toast.makeText(getActivity(), "Cannot store empty values !", Toast.LENGTH_SHORT).show();
}
else
{
try
{
FileOutputStream fOut = getActivity().openFileOutput("sample_details.txt", Context.MODE_MULTI_PROCESS);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fOut);
outputStreamWriter.write(name + " " + email + ";");
Log.e("String Concat Done", "Concatenation of the Strings is done to write in the File. Write Success.");
outputStreamWriter.flush();
Log.e("Flush","Flush Success");
outputStreamWriter.close();
fOut.close();
Log.e("Stream Closed","Both Streams are flushed and closed");
Toast.makeText(getActivity(), "Submitted", Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{
Toast.makeText(getActivity(), "FAILED !", Toast.LENGTH_SHORT).show();
Log.e("Error in File Write",e.toString());
}
}
}
}
}
FragmentTab2.java
package com.adhish.pagertabstriptutorial;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
public class FragmentTab2 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Get the view from fragmenttab2.xml
View v = inflater.inflate(R.layout.fragmenttab2, container, false);
TextView txt = (TextView)v.findViewById(R.id.optext);
try
{
FileInputStream fIn = getActivity().openFileInput("sample_details.txt");
InputStreamReader in = new InputStreamReader(fIn);
BufferedReader bufferedReader = new BufferedReader(in);
StringBuilder sb = new StringBuilder();
String line = null;
String str = null;
while ((line = bufferedReader.readLine()) != null) {
sb.append(line).append("\n");
}
txt.setText(line);
bufferedReader.close();
in.close();
}
catch (Exception e)
{
Log.e("File not found.",e.toString());
}
return v;
}
}
Only one line is displayed in the text view.
Please help me in detail as I am very new to Android.
Please suggest a better way in detail if exists.
I am attaching my UI here:
Thanks.
First Edit your try block with this code
FileOutputStream fOut = openFileOutput(
"sample_details.txt", Context.MODE_MULTI_PROCESS);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fOut);
JSONObject jobj=new JSONObject();
jobj.put("Name", "name");
jobj.put("Email", "email");
outputStreamWriter.write(jobj.toString());
Log.e("String Concat Done",
"Concatenation of the Strings is done to write in the File. Write Success.");
outputStreamWriter.flush();
Log.e("Flush", "Flush Success");
outputStreamWriter.close();
fOut.close();
Log.e("Stream Closed", "Both Streams are flushed and closed");
And in second tab(fragment) first get(read) the string as:
public static String convertStreamToString(InputStream is) throws Exception
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line).append("\n");
}
reader.close();
return sb.toString();
}
public static String getStringFromFile (String filePath) throws Exception {
File fl = new File(filePath);
FileInputStream fin = new FileInputStream(fl);
String ret = convertStreamToString(fin);
//Make sure you close all streams.
fin.close();
return ret;
}
You will get(read) the string by calling getStringFromFile(filepath) method
the string is in JSON form so you have to parse it as:
public void Readvalue(String jsonvalue)
{
try {
JSONObject jobj=new JSONObject(jsonvalue);
String name=jobj.getString("Name");
String email=jobj.getString("Email");
System.out.println("Name is : "+name +" Email is : "+email);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Related
I am trying to open a CSV file downloaded into internal storage for reading purpose alone. This is the code I have used:
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;
import java.io.FileInputStream;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onClick(View v) {
try {
String FileName = "/storage/emulated/0/Download/MyDocument.csv";
FileInputStream fis = openFileInput(FileName);
fis.read();
fis.close();
Toast.makeText(getBaseContext(),"File Access Permitted",Toast.LENGTH_SHORT).show();
}
catch (Exception e) {
Toast.makeText(getBaseContext(),"File Access Denied",Toast.LENGTH_SHORT).show();
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
While the file is downloaded and I am able to open it in File Manager, the above code does not work. How do I achieve the required functionality?
As per this stackoverflow question's accepted answer, you could try this:
public String readFileFromDownloads(String fileName) {
File downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
if (!downloadsDir.exists()) return null;
File file = new File(downloadsDir, fileName);
if (!file.exists()) return null;
try {
StringBuilder fileContent = new StringBuilder();
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
fileContent.append(line);
fileContent.append('\n');
}
br.close();
return fileContent.toString();
} catch (IOException ex) {
//Handle error
return null;
}
}
And then call readFileFromDownloads("MyDocument.csv"); from inside your onClick(); method.
Also, you might need to add android.permission.READ_EXTERNAL_STORAGE to your Manifest and handle Android 6.0 new permission system as per Android Docs.
I am new to android and I am trying to read data from a server. I use a util and call that util like this
private void ParseSource(String Url){
String source = new Cls_SourceGrabber().grabSource(Url);
}
But I am getting a android.os.networkonmainthreadexception. How can I reduce that?
My SourceGrabber util:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
public class Cls_SourceGrabber {
private HttpGet mRequest;
private HttpClient mClient;
private BufferedReader mReader;
private StringBuffer mBuffer;
private String mNewLine;
public Cls_SourceGrabber() {
mRequest = new HttpGet();
InitializeClient();
mReader = null;
mBuffer = new StringBuffer(10000);
mNewLine = System.getProperty("line.separator");
}
private void InitializeClient() {
if (mClient == null || mClient.getConnectionManager() == null) {
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, 4500);
HttpConnectionParams.setSoTimeout(httpParameters, 10000);
// HttpConnectionParams.setTcpNoDelay(httpParameters, true);
mClient = new DefaultHttpClient(httpParameters);
}
}
/*
*Grab the full source
*/
public String grabSource(String url) {
mBuffer.setLength(0);
InitializeClient();
String source = "";
try {
mRequest.setURI(new URI(url));
HttpResponse response = mClient.execute(mRequest);
mReader = new BufferedReader(new InputStreamReader(response
.getEntity().getContent()));
String line = "";
while ((line = mReader.readLine()) != null) {
mBuffer.append(line);
mBuffer.append(mNewLine);
source = mBuffer.toString();
if (Thread.interrupted()) {
break;
}
}
} catch (ConnectTimeoutException e) {
source = "Connection Timed Out.";
} catch (java.net.UnknownHostException e) {
source = "No Internet Connection available!";
} catch (java.lang.ArrayIndexOutOfBoundsException e) {
source = "Site Parsing Exception.";
} catch (ClientProtocolException e) {
source = "Protocol Exception.";
} catch (IOException e) {
source = "Server not responding.";
} catch (URISyntaxException e) {
source = "Wrong URL!";
} catch (Exception e) {
source = "Exception - " + e.toString() + " - "
+ e.getMessage();
e.printStackTrace();
} finally {
closeReader();
}
return source;
}
}
First of all, I would not recommend on using HTTPClient any more, since it is not supported any more from sdk version 23.
So, it will be better to migrate the network operations to URL Connection.
Now, android never allows network operations on Main thread since it will block the UI thread for a considerable time, hence may cause crash or bad user experience.
You can take a look on these docs : Doc 1
The better way to do Network operations is by creating an AsyncTask.
Just take care not to access any UI thread element in the doInBackground method. You can modify UI Thread elements on onPreExecute or onPostExecute Methods.
I have created a NetworkOps Util. You can take a look on that, whether it may be any use for you :
import android.content.Context;
import android.net.Uri;
import android.util.Log;
import com.csehelper.variables.Constants;
import com.csehelper.variables.Keys;
import com.csehelper.variables.Url;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.ProtocolException;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.util.ArrayList;
public class NetworkOps {
public final String EXCEPTION = "~Exception~";
/****************************
* Method to Grab Source
****************************/
public static String GrabSource(String URL) {
return PostData(URL, null);
}
/**
* *****************************************
* Method to Grab Source code from URL
* Posting Data
* *****************************************
*/
private static String PostData(String url, Uri.Builder uribuilder) {
String Source;
HttpURLConnection.setFollowRedirects(false);
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) new URL(url).openConnection();
urlConnection.setDoOutput(true);
urlConnection.setConnectTimeout(10000);
if(uribuilder != null) {
String query = uribuilder.build().getEncodedQuery();
OutputStream os = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(query);
writer.flush();
writer.close();
os.close();
}
urlConnection.connect();
if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
String line;
StringBuilder builder = new StringBuilder();
InputStreamReader isr = new InputStreamReader(
urlConnection.getInputStream());
BufferedReader reader = new BufferedReader(isr);
while ((line = reader.readLine()) != null) {
builder.append(line);
}
Source = builder.toString();
} else {
Source = EXCEPTION + "Server unreachable. Check network connection.";
}
} catch (SocketTimeoutException e) {
Source = EXCEPTION + "Connection timed out.";
} catch (java.net.UnknownHostException e) {
Source = EXCEPTION + Constants.EXCEPTION_NO_NET;
} catch (ArrayIndexOutOfBoundsException e) {
Source = EXCEPTION + "Server error";
} catch (ProtocolException e) {
Source = EXCEPTION + "Protocol error";
} catch (IOException e) {
Source = EXCEPTION + "Server unreachable. Check network connection.";
} catch (Exception e) {
Source = EXCEPTION + "Error:" + e.toString() + " - "
+ e.getMessage();
e.printStackTrace();
} finally {
if (urlConnection != null) urlConnection.disconnect();
}
return Source;
}
}
Call these Static Functions from AsyncTask:
/*********************************
* AsyncTask to GrabSource
********************************/
class AsyncTask_GrabSource extends AsyncTask<Void, Void, Void> {
String Source = null;
String url = "https://enigmatic-woodland-35608.herokuapp.com/pager.json";
#Override
protected void onPreExecute() {
//Runs on Main Thread. You can access your UI elements here.
}
#Override
protected Void doInBackground(Void... params) {
// Don't access any UI elements from this function
Source = NetworkOps.GrabSource(this.url);
return null;
}
#Override
protected void onPostExecute(Void result) {
if (Source != null) {
if (!Source.contains("~Exception~")) {
//Show Error Message or do whatever you want
} else {
//Do Whatever with your Grabbed Sourcecode.
// This function runs on UI Thread, so you can update UI elements here
}
}
}
You can also post data with the function PostData. In method doInBackground, add this:
Uri.Builder builder = new Uri.Builder()
.appendQueryParameter("key", "value")
.appendQueryParameter("key2", "value2");
Source = NetworkOps.PostData(getApplicationContext(), url, builder);
I am accessing a file from my fragment in my Android app.
But my problem is that only 1 line of that file is being read.
My code is:
FragmentTab2.java
package com.adhish.pagertabstriptutorial;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
public class FragmentTab2 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Get the view from fragmenttab2.xml
View v = inflater.inflate(R.layout.fragmenttab2, container, false);
TextView txt = (TextView)v.findViewById(R.id.optext);
try
{
FileInputStream fIn = getActivity().openFileInput("sample_details.txt");
InputStreamReader in = new InputStreamReader(fIn);
BufferedReader bufferedReader = new BufferedReader(in);
//StringBuilder sb = new StringBuilder();
String line = null;
String str = "";
while ((line = bufferedReader.readLine()) != null) {
str += line;
}
txt.setText(str);
bufferedReader.close();
in.close();
}
catch (Exception e)
{
Log.e("File not found.",e.toString());
}
return v;
}
}
The code which writes the file (in a different fragment) is:
#Override
public void onClick(View view)
{
if(view == getView().findViewById(R.id.button1))
{
//Call all the elements of this Fragment here becuase they are accessible easily through
//getView(); method. Use the getText(); method to get the Text and toString(); to convert
//it.
String name = ((EditText)getView().findViewById(R.id.name)).getText().toString();
String email = ((EditText)getView().findViewById(R.id.email)).getText().toString();
if(name.isEmpty() || email.isEmpty())
{
Toast.makeText(getActivity(), "Cannot store empty values !", Toast.LENGTH_SHORT).show();
}
else
{
try
{
FileOutputStream fOut = getActivity().openFileOutput("sample_details.txt", Context.MODE_MULTI_PROCESS);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fOut);
outputStreamWriter.write(name + " " + email + ";");
Log.e("String Concat Done", "Concatenation of the Strings is done to write in the File. Write Success.");
outputStreamWriter.flush();
Log.e("Flush","Flush Success");
outputStreamWriter.close();
fOut.close();
Log.e("Stream Closed","Both Streams are flushed and closed");
Toast.makeText(getActivity(), "Submitted", Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{
Toast.makeText(getActivity(), "FAILED !", Toast.LENGTH_SHORT).show();
Log.e("Error in File Write",e.toString());
}
}
}
}
I don't know the correct way of implementing this.
Please let me know in detail how to do it, because I am new to Android.
Thanks.
Because your
FileOutputStream fOut = getActivity().openFileOutput("sample_details.txt", Context.MODE_MULTI_PROCESS);
should be
openFileOutput(yourFile, Context.MODE_APPEND);
FileOutputStream also have a constructor where you can append to the original file if you don't have context to be used with Android's openFileOutput() instead.
Extra reference for similar questions: OutputStreamWriter does not append
I'm trying to read website data with my Android app. What's strange is that it works on my Android 2.3.4 phone, but not my brand new 2nd Gen Nexus 7 Tablet that's running Android 4.3. I'm not getting any errors in LogCat, there's just nothing displayed on the Tablet. Has anyone else run into this? If so, clue me in to a fix so that it'll run on both my devices. Here's my whole Activity:
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URI;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class WCBCCalendar extends Activity {
Button back_BTN;
TextView urlTest_TV;
String about_url_Str = "http://www. url to read";
String returned;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.calendar);
back_BTN = (Button) findViewById(R.id.backCal_btn);
sunDate_TV = (TextView) findViewById(R.id.sunDate_TV);
npDate_TV = (TextView) findViewById(R.id.npDate_TV);
urlTest_TV = (TextView) findViewById(R.id.urlTest_tv);
GetWebInfo test = new GetWebInfo();
try {
returned = test.getInternetData();
urlTest_TV.setText(returned);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}// --- END onCreate
// --- Classes, Methods
public class GetWebInfo {
public String getInternetData() throws Exception{
BufferedReader in = null;
String data = null;
try{
HttpClient client = new DefaultHttpClient();
URI website = new URI(about_url_Str);
HttpGet request = new HttpGet();
request.setURI(website);
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity ().getContent()));
StringBuffer sb = new StringBuffer("");
String l = "";
String nl = System.getProperty("line.separator");
while((l = in.readLine()) !=null ){
sb.append(l + nl);
}
in.close();
data = sb.toString();
return data;
}finally{
if (in != null){
try{
in.close();
return data;
}catch (Exception e){
e.printStackTrace();
}
}
}
}
}//--- END class
// --- END all Classes, Methods
#Override
protected void onPause() {
super.onPause();
overridePendingTransition(R.anim.fadein, R.anim.fadeout);
}
}
I want to send an audio file .mp3 file from android client to servlet server and save it in a location. If I play that saved .mp3 file in that location it should play.
My question is there a way to send a .mp3 file directly from client to server and retrieve that mp3 file in servlet.
My client side code is as follows:
package com.android.audiorecord;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.commons.io.FileUtils;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import com.android.audiofileplayer.StreamingMp3Player;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
public class AudioRecordActivity extends Activity
{
private static final String LOG_TAG = "AudioRecordTest";
private static String mFileName = null;
private String url = "QRFileSaveServlet";
String result;
byte[] value;
String s;
byte[] filebyte,clientbyte;
String readString;
private RecordButton mRecordButton = null;
private MediaRecorder mRecorder = null;
private SubmitButton mSubmitButton = null;
private PlayButton mPlayButton = null;
private MediaPlayer mPlayer = null;
String fileresult = "";
HttpResponse response;
private void onRecord(boolean start) {
if (start) {
startRecording();
} else {
stopRecording();
}
}
private void onPlay(boolean start) {
if (start) {
startPlaying();
} else {
stopPlaying();
}
}
private void startPlaying() {
mPlayer = new MediaPlayer();
try {
mPlayer.setDataSource(mFileName);
mPlayer.prepare();
mPlayer.start();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
}
private void stopPlaying() {
mPlayer.release();
mPlayer = null;
}
private void startRecording() {
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mRecorder.setOutputFile(mFileName);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
mRecorder.prepare();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
mRecorder.start();
}
/* public boolean saveas(int ressound){
byte[] buffer=null;
InputStream fIn = getBaseContext().getResources().openRawResource(ressound);
int size=0;
try {
size = fIn.available();
buffer = new byte[size];
fIn.read(buffer);
fIn.close();
} catch (IOException e) {
// TODO Auto-generated catch block
return false;
}
String path="/sdcard/media/audio/ringtones/";
String filename="examplefile"+".ogg";
boolean exists = (new File(path)).exists();
if (!exists){new File(path).mkdirs();}
FileOutputStream save;
try {
save = new FileOutputStream(path+filename);
save.write(buffer);
save.flush();
save.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
return false;
} catch (IOException e) {
// TODO Auto-generated catch block
return false;
}
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://"+path+filename)));
File k = new File(path, filename);
ContentValues values = new ContentValues();
values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());
values.put(MediaStore.MediaColumns.TITLE, "exampletitle");
values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/ogg");
values.put(MediaStore.Audio.Media.ARTIST, "cssounds ");
values.put(MediaStore.Audio.Media.IS_RINGTONE, true);
values.put(MediaStore.Audio.Media.IS_NOTIFICATION, true);
values.put(MediaStore.Audio.Media.IS_ALARM, true);
values.put(MediaStore.Audio.Media.IS_MUSIC, false);
//Insert it into the database
this.getContentResolver().insert(MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath()), values);
return true;
} */
private void stopRecording() {
mRecorder.stop();
mRecorder.release();
// mRecorder.reset();
mRecorder = null;
}
class RecordButton extends Button {
boolean mStartRecording = true;
OnClickListener clicker = new OnClickListener() {
public void onClick(View v) {
onRecord(mStartRecording);
if (mStartRecording) {
setText("Stop recording");
} else {
setText("Start recording");
}
mStartRecording = !mStartRecording;
}
};
public RecordButton(Context ctx) {
super(ctx);
setText("Start recording");
setOnClickListener(clicker);
}
}
class PlayButton extends Button {
boolean mStartPlaying = true;
OnClickListener clicker = new OnClickListener() {
public void onClick(View v) {
onPlay(mStartPlaying);
if (mStartPlaying) {
setText("Stop playing");
} else {
setText("Start playing");
}
mStartPlaying = !mStartPlaying;
}
};
public PlayButton(Context ctx) {
super(ctx);
setText("Start playing");
setOnClickListener(clicker);
}
}
class SubmitButton extends Button {
OnClickListener clicker = new OnClickListener() {
public void onClick(View v) {
File f = new File(Environment.getExternalStorageDirectory()+"/audiorecordtest.mp3");
//
//byte[] file = fileresult.getBytes();
try {
filebyte = FileUtils.readFileToByteArray(f);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("$$$$$$$$$$$" + filebyte);
clientbyte = Base64.encode(filebyte, MODE_APPEND);//(filebyte, MODE_APPEND);
s= new String(clientbyte);
System.out.println("**************" + s);
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("Audiofile", s));
result = AudioServer.executePost(url, nameValuePairs);
result = result.trim();
System.out.println("response recieved " + result);
if(result!=null){
Bundle bundle = new Bundle();
Intent explicitIntent = new Intent(AudioRecordActivity.this,
StreamingMp3Player.class);
bundle.putString("result", result);
explicitIntent.putExtras(bundle);
startActivity(explicitIntent);
}
}
};
public SubmitButton(Context ctx) {
super(ctx);
setText("Save");
setOnClickListener(clicker);
}
}
public AudioRecordActivity() {
mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
mFileName += "/audiorecordtest.mp3";
}
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
LinearLayout ll = new LinearLayout(this);
mRecordButton = new RecordButton(this);
ll.addView(mRecordButton,
new LinearLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT,
0));
mPlayButton = new PlayButton(this);
ll.addView(mPlayButton,
new LinearLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT,
0));
mSubmitButton = new SubmitButton(this);
ll.addView(mSubmitButton, new LinearLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 0));
setContentView(ll);
}
#Override
public void onPause() {
super.onPause();
if (mRecorder != null) {
mRecorder.release();
mRecorder = null;
}
if (mPlayer != null) {
mPlayer.release();
mPlayer = null;
}
}
}
in this can i send audiorecordtest.mp3 file direcly to server without encoding to byte[] and send it in namevalue pair.
My server side code is as follows:
package com.gsr.qrbarcode;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import com.android.gsr.utils.AudioSampleReader;
import com.android.gsr.utils.AudioSampleWriter;
import com.android.gsr.utils.Base64;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
//import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFileFormat.Type;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.UnsupportedAudioFileException;
import org.apache.commons.io.FileUtils;
/**
* Servlet implementation class QRFileSaveServlet
*/
//#WebServlet("/QRFileSaveServlet")
public class QRFileSaveServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
AudioInputStream ais;
/**
* Default constructor.
*/
public QRFileSaveServlet() {
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String qrfile= request.getParameter("Audiofile");
System.out.println("String Parameter \"" +qrfile );
byte[] audiofile=Base64.decode(qrfile);
String newStr = new String(audiofile);
// Display the contents of the byte array.
System.out.println("The new String equals \"" +newStr + "\"");
String filePath = this.getServletContext().getRealPath("/")+"";
System.out.println("Path of the file " + filePath);
String fileupload="AudioFileStorage";
//PrintWriter out = response.getWriter();
File f;
f= new File(filePath);
//int status = 0;
if(f.exists()) {
filePath += fileupload;
f = new File(filePath);
if(!f.exists()){
f.mkdir();
}
f = new File(filePath,"test.mp3");
if(!f.exists()) {
FileOutputStream fos = new FileOutputStream(f);
fos.write(audiofile);
fos.flush();
fos.close();
} else {
//out.println("failure");
ServletOutputStream stream = null;
BufferedInputStream buf = null;
try{
stream = response.getOutputStream();
// File mp3 = new File(mp3Dir + "/" + fileName);
response.setContentType("audio/mpeg");
response.addHeader("Content-Disposition","attachment; filename="+f );
response.setContentLength( (int) f.length() );
FileInputStream input = new FileInputStream(f);
buf = new BufferedInputStream(input);
int readBytes = 0;
while((readBytes = buf.read()) != -1)
stream.write(readBytes);
System.out.println("Response Stream"+stream);
} catch (IOException ioe){
throw new ServletException(ioe.getMessage());
} finally {
if(stream != null)
stream.close();
if(buf != null)
buf.close();
}
}
}
if (filePath == null || filePath.equals(""))
throw new ServletException(
"Invalid or non-existent mp3Dir context-param.");
URL url = null;
try{
url = f.toURL();
System.out.println("URL : "+ url);
System.out.println("Converting process Successfully");
}
catch (MalformedURLException me){
System.out.println("Converting process error");
}
//String rfilepath=this.getServletContext().getRealPath("/")+" AudioFileStorage/test.mp3";
//System.out.println("Path of the rfilepath " + rfilepath);
}
}
here can i get that audiorecordtest.mp3 file directly from client without decoding in server side and play it in this servlet
my server connection in local for client
executepost() is as follows:
package com.android.audio;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
public class AudioServer {
static InputStream is;
private static String API_URL = "http://192.168.15.71:8088/QRBarCodeServer/";
public static String executePost(String apiurl,
ArrayList<NameValuePair> urlParameters) {
try {
// Create connection
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(API_URL + apiurl);
httppost.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
// Get Response
// InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response1 = new StringBuffer();
while ((line = rd.readLine()) != null) {
response1.append(line);
response1.append('\r');
}
rd.close();
return response1.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public static String executeHttpGet(String apiurl) throws Exception {
BufferedReader in = null;
try {
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(API_URL + apiurl);
request.setURI(new URI(apiurl));
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity()
.getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
String result = sb.toString();
return result;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
here is simple way to do that
1: from android side read that .mp3 file and create base64String from it.
2: At servier side read this base64String and convert it back to .mp3 file.
to convert any file to base64String following is the process
File file = new File(Environment.getExternalStorageDirectory() + "/hello-4.wav");
byte[] bytes = FileUtils.readFileToByteArray(file);
String encoded = Base64.encodeToString(bytes, 0);
You can reach it using apache MultipartEntity:
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(BASE_URL);
MultipartEntity mpEntity = new MultipartEntity();
mpEntity.addPart("Audiofile", new FileBody(file, "audio/mpeg"));
post.setEntity(mpEntity);
HttpResponse res = client.execute(post);
Yea you can send this in Servlet there is Mime type mime means multimedia extension
I am sending code i can guarantee that it will work in Servlet in java and you should take
care for android by own
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class SendMp3Envious extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String fileName = (String) request.getParameter("file");
if (fileName == null || fileName.equals(""))
throw new ServletException(
"Invalid or non-existent file parameter in SendMp3 servlet.");
if (fileName.indexOf(".mp3") == -1)
fileName = fileName + ".mp3";
String mp3Dir = getServletContext().getInitParameter("mp3-dir");
if (mp3Dir == null || mp3Dir.equals(""))
throw new ServletException(
"Invalid or non-existent mp3Dir context-param.");
ServletOutputStream stream = null;
BufferedInputStream buf = null;
try {
stream = response.getOutputStream();
File mp3 = new File(mp3Dir + "/" + fileName);
//set response headers
response.setContentType("audio/mpeg");
response.addHeader("Content-Disposition", "attachment; filename="
+ fileName);
response.setContentLength((int) mp3.length());
FileInputStream input = new FileInputStream(mp3);
buf = new BufferedInputStream(input);
int readBytes = 0;
//read from the file; write to the ServletOutputStream
while ((readBytes = buf.read()) != -1)
stream.write(readBytes);
} catch (IOException ioe) {
throw new ServletException(ioe.getMessage());
} finally {
if (stream != null)
stream.close();
if (buf != null)
buf.close();
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}