Intent.ACTION_GET_CONTENT to open mp3, play using MediaPlayer, tested on Android 5.1 Lollipop

Refer to my old exercise of MediaPlayer "Display playing time for MediaPlayer", open mp3 using Intent of "ACTION_GET_CONTENT", then pass the media path, data.getData().getPath(), to mediaPlayer.setDataSource(). But it not work now.

To fix it, modify to pass data.getData() to mediaPlayer.setDataSource().

Tested on Android emulator running 5.5 Lollipop:


MainActivity.java

package com.blogspot.android_er.androidplayer;

import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

public class MainActivity extends AppCompatActivity {

    TextView info, state;
    Button buttonOpen, buttonOpenNew;
    Button buttonPlay, buttonPause, buttonStop;
    SeekBar timeLine;
    LinearLayout timeFrame;
    TextView timePos, timeDur;

    final static int RQS_OPEN_AUDIO_MP3 = 1;
    final static int RQS_OPEN_AUDIO_MP3_NEW = 2;

    MediaPlayer mediaPlayer;
    String srcPath = null;

    enum MP_State {
        Idle, Initialized, Prepared, Started, Paused,
        Stopped, PlaybackCompleted, End, Error, Preparing
    }

    MP_State mediaPlayerState;

    //ScheduledExecutorService myScheduledExecutorService;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        buttonOpen = (Button) findViewById(R.id.open);
        buttonOpen.setOnClickListener(buttonOpenOnClickListener);
        buttonOpenNew = (Button) findViewById(R.id.opennew);
        buttonOpenNew.setOnClickListener(buttonOpenNewOnClickListener);

        info = (TextView) findViewById(R.id.info);
        state = (TextView) findViewById(R.id.state);

        buttonPlay = (Button) findViewById(R.id.play);
        buttonPlay.setOnClickListener(buttonPlayOnClickListener);
        buttonPause = (Button) findViewById(R.id.pause);
        buttonPause.setOnClickListener(buttonPauseOnClickListener);
        buttonStop = (Button) findViewById(R.id.stop);
        buttonStop.setOnClickListener(buttonStopOnClickListener);

        //
        timeLine = (SeekBar) findViewById(R.id.seekbartimeline);
        timeFrame = (LinearLayout) findViewById(R.id.timeframe);
        timePos = (TextView) findViewById(R.id.pos);
        timeDur = (TextView) findViewById(R.id.dur);

        ScheduledExecutorService myScheduledExecutorService
                = Executors.newScheduledThreadPool(1);

        myScheduledExecutorService.scheduleWithFixedDelay(
                new Runnable() {
                    @Override
                    public void run() {
                        monitorHandler.sendMessage(monitorHandler.obtainMessage());
                    }
                },
                200, //initialDelay
                200, //delay
                TimeUnit.MILLISECONDS);

    }

    Handler monitorHandler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
            mediaPlayerMonitor();
        }

    };

    private void mediaPlayerMonitor() {
        if (mediaPlayer == null) {
            timeLine.setVisibility(View.INVISIBLE);
            timeFrame.setVisibility(View.INVISIBLE);
        } else {
            if (mediaPlayer.isPlaying()) {
                timeLine.setVisibility(View.VISIBLE);
                timeFrame.setVisibility(View.VISIBLE);

                int mediaDuration = mediaPlayer.getDuration();
                int mediaPosition = mediaPlayer.getCurrentPosition();
                timeLine.setMax(mediaDuration);
                timeLine.setProgress(mediaPosition);
                timePos.setText(String.valueOf((float) mediaPosition / 1000) + "s");
                timeDur.setText(String.valueOf((float) mediaDuration / 1000) + "s");
            } else {
                timeLine.setVisibility(View.INVISIBLE);
                timeFrame.setVisibility(View.INVISIBLE);
            }
        }
    }

    MediaPlayer.OnErrorListener mediaPlayerOnErrorListener
            = new MediaPlayer.OnErrorListener() {

        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
            // TODO Auto-generated method stub

            mediaPlayerState = MP_State.Error;
            showMediaPlayerState();

            return false;
        }
    };


    private void cmdReset() {
        if (mediaPlayer == null) {
            mediaPlayer = new MediaPlayer();
            mediaPlayer.setOnErrorListener(mediaPlayerOnErrorListener);
        }
        mediaPlayer.reset();
        mediaPlayerState = MP_State.Idle;
        showMediaPlayerState();
    }

    private void cmdSetDataSource(Uri uri) {
        if (mediaPlayerState == MP_State.Idle) {
            try {
                mediaPlayer.setDataSource(MainActivity.this, uri);
                mediaPlayerState = MP_State.Initialized;
            } catch (IllegalArgumentException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            } catch (IllegalStateException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            } catch (IOException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            }
        } else {
            Toast.makeText(MainActivity.this,
                    "Invalid State@cmdSetDataSource - skip",
                    Toast.LENGTH_LONG).show();
        }

        showMediaPlayerState();
    }

    private void cmdSetDataSource(String path) {
        if (mediaPlayerState == MP_State.Idle) {
            try {
                mediaPlayer.setDataSource(path);
                mediaPlayerState = MP_State.Initialized;
            } catch (IllegalArgumentException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            } catch (IllegalStateException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            } catch (IOException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            }
        } else {
            Toast.makeText(MainActivity.this,
                    "Invalid State@cmdSetDataSource - skip",
                    Toast.LENGTH_LONG).show();
        }

        showMediaPlayerState();
    }

    private void cmdPrepare() {

        if (mediaPlayerState == MP_State.Initialized
                || mediaPlayerState == MP_State.Stopped) {
            try {
                mediaPlayer.prepare();
                mediaPlayerState = MP_State.Prepared;
            } catch (IllegalStateException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            } catch (IOException e) {
                Toast.makeText(MainActivity.this,
                        e.toString(), Toast.LENGTH_LONG).show();
                e.printStackTrace();
            }
        } else {
            Toast.makeText(MainActivity.this,
                    "Invalid State@cmdPrepare() - skip",
                    Toast.LENGTH_LONG).show();
        }

        showMediaPlayerState();
    }

    private void cmdStart() {
        if (mediaPlayerState == MP_State.Prepared
                || mediaPlayerState == MP_State.Started
                || mediaPlayerState == MP_State.Paused
                || mediaPlayerState == MP_State.PlaybackCompleted) {
            mediaPlayer.start();
            mediaPlayerState = MP_State.Started;
        } else {
            Toast.makeText(MainActivity.this,
                    "Invalid State@cmdStart() - skip",
                    Toast.LENGTH_LONG).show();
        }

        showMediaPlayerState();
    }

    private void cmdPause() {
        if (mediaPlayerState == MP_State.Started
                || mediaPlayerState == MP_State.Paused) {
            mediaPlayer.pause();
            mediaPlayerState = MP_State.Paused;
        } else {
            Toast.makeText(MainActivity.this,
                    "Invalid State@cmdPause() - skip",
                    Toast.LENGTH_LONG).show();
        }
        showMediaPlayerState();
    }

    private void cmdStop() {

        if (mediaPlayerState == MP_State.Prepared
                || mediaPlayerState == MP_State.Started
                || mediaPlayerState == MP_State.Stopped
                || mediaPlayerState == MP_State.Paused
                || mediaPlayerState == MP_State.PlaybackCompleted) {
            mediaPlayer.stop();
            mediaPlayerState = MP_State.Stopped;
        } else {
            Toast.makeText(MainActivity.this,
                    "Invalid State@cmdStop() - skip",
                    Toast.LENGTH_LONG).show();
        }
        showMediaPlayerState();

    }

    private void showMediaPlayerState() {

        switch (mediaPlayerState) {
            case Idle:
                state.setText("Idle");
                break;
            case Initialized:
                state.setText("Initialized");
                break;
            case Prepared:
                state.setText("Prepared");
                break;
            case Started:
                state.setText("Started");
                break;
            case Paused:
                state.setText("Paused");
                break;
            case Stopped:
                state.setText("Stopped");
                break;
            case PlaybackCompleted:
                state.setText("PlaybackCompleted");
                break;
            case End:
                state.setText("End");
                break;
            case Error:
                state.setText("Error");
                break;
            case Preparing:
                state.setText("Preparing");
                break;
            default:
                state.setText("Unknown!");
        }
    }

    View.OnClickListener buttonPlayOnClickListener
            = new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            if (srcPath == null) {
                Toast.makeText(MainActivity.this,
                        "No file selected",
                        Toast.LENGTH_LONG).show();
            } else {
                cmdPrepare();
                cmdStart();
            }

        }

    };

    View.OnClickListener buttonPauseOnClickListener
            = new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            cmdPause();
        }

    };

    View.OnClickListener buttonStopOnClickListener
            = new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            cmdStop();

        }

    };

    View.OnClickListener buttonOpenOnClickListener
            = new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent();
            intent.setType("audio/mp3");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(Intent.createChooser(
                    intent, "Open Audio (mp3) file"), RQS_OPEN_AUDIO_MP3);

        }
    };

    View.OnClickListener buttonOpenNewOnClickListener
            = new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent();
            intent.setType("audio/mp3");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(Intent.createChooser(
                    intent, "Open Audio (mp3) file"), RQS_OPEN_AUDIO_MP3_NEW);

        }
    };

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == RQS_OPEN_AUDIO_MP3) {
//work on my old post at that time, but not work now!!!
//http://android-er.blogspot.com/2012/06/display-playing-time-for-mediaplayer.html
                Uri audioFileUri = data.getData();

                srcPath = audioFileUri.getPath();
                info.setText(audioFileUri.toString() + "\n" + srcPath);

                cmdReset();
                cmdSetDataSource(srcPath);

            }else if(requestCode == RQS_OPEN_AUDIO_MP3_NEW){
                //New version,
                Uri audioFileUri = data.getData();

                srcPath = audioFileUri.getPath();
                info.setText(audioFileUri.toString() + "\n" + srcPath);

                cmdReset();
                cmdSetDataSource(audioFileUri);
            }
        }
    }
}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp"
    tools:context="com.blogspot.android_er.androidplayer.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <Button
        android:id="@+id/open"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Open MP3 file" />

    <Button
        android:id="@+id/opennew"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Open MP3 file (NEW)" />

    <TextView
        android:id="@+id/info"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/play"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Play" />

    <Button
        android:id="@+id/pause"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Pause" />

    <Button
        android:id="@+id/stop"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Stop" />

    <TextView
        android:id="@+id/state"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <SeekBar
        android:id="@+id/seekbartimeline"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:visibility="invisible" />

    <LinearLayout
        android:id="@+id/timeframe"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:visibility="invisible">

        <TextView
            android:id="@+id/pos"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/dur"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="right" />
    </LinearLayout>

</LinearLayout>

uses-permission of "android.permission.READ_EXTERNAL_STORAGE" is needed in AndroidManifest.xml


Download the files .

Related:
- Open mp3 using Intent.ACTION_OPEN_DOCUMENT, ACTION_GET_CONTENT and ACTION_PICK, with checking and requesting permission at runtime.