MediaPlayer-Vorbereitung Fehlgeschlagen

All das mache ich seit den letzten 8 Stunden versucht zu kommen mit einem einfachen recorder/Wiedergabe-app. Ich möchte in der Lage sein, um die Aufzeichnung der audio in 3GP-und dann haben Sie es automatisch geladen in die MediaPlayer so, dass ich es spielen können, zurück. Ich bin 80% sicher, dass es die Aufnahme und Speicherung der angegebenen Stelle im code, aber wenn ich versuchen und laden Sie Sie in mein media-player bekomme ich immer diese Fehlermeldung. Ich habe versucht, das laden der toto_africa.mp3 - Datei zu, um sicherzustellen, dass es nicht die aufgenommene Datei das problem, und es gibt mir immer noch diesen Fehler. Jede Hilfe mit diesem Problem wäre sehr geschätzt, weil ich habe überall gesucht, für die Antwort. Ich denke mal eine speziellere Frage wäre: Wie kann ich richtig erhalten, mein MediaPlayer und MediaRecorder kommunizieren und funktionieren richtig?

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LogCat

03-14 00:32:18.708: E/appPath:(4443): /data/data/com.jordan.tester/files
03-14 00:32:18.708: E/(1) Length of de file mon'?(4443): 0
03-14 00:32:24.408: E/Are ya dead maan?(4443): Kiss the Lucky egg
03-14 00:32:24.688: E/IS da file alive?(4443): true
03-14 00:32:24.688: E/IS da file a file?(4443): true
03-14 00:32:24.688: E/(2) Length of de file mon'?(4443): 4515
03-14 00:32:28.362: V/MediaPlayer(4443): constructor
03-14 00:32:28.362: V/MediaPlayer(4443): setListener
03-14 00:32:28.368: V/MediaPlayer(4443):setDataSource(/data/data/com.jordan.tester/files/temp.3gp)
03-14 00:32:28.368: V/MediaPlayer(4443): prepare
03-14 00:32:28.368: V/MediaPlayer(4443): message received msg=100, ext1=1, ext2=-2147483648
03-14 00:32:28.368: E/MediaPlayer(4443): error (1, -2147483648)
03-14 00:32:28.368: V/MediaPlayer(4443): signal application thread
03-14 00:32:28.368: V/MediaPlayer(4443): prepare complete - status=1
03-14 00:32:28.378: D/MediaPlayer(4443): create failed:
03-14 00:32:28.378: D/MediaPlayer(4443): java.io.IOException: Prepare failed.: status=0x1
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.media.MediaPlayer.prepare(Native Method)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.media.MediaPlayer.create(MediaPlayer.java:638)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.media.MediaPlayer.create(MediaPlayer.java:615)
03-14 00:32:28.378: D/MediaPlayer(4443):    at com.jordan.tester.Main.startPlaying(Main.java:120)
03-14 00:32:28.378: D/MediaPlayer(4443):    at com.jordan.tester.Main.onClick(Main.java:89)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.view.View.performClick(View.java:2419)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.view.View$PerformClick.run(View.java:8865)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.os.Handler.handleCallback(Handler.java:587)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.os.Handler.dispatchMessage(Handler.java:92)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.os.Looper.loop(Looper.java:143)
03-14 00:32:28.378: D/MediaPlayer(4443):    at android.app.ActivityThread.main(ActivityThread.java:5061)
03-14 00:32:28.378: D/MediaPlayer(4443):    at java.lang.reflect.Method.invokeNative(Native Method)
03-14 00:32:28.378: D/MediaPlayer(4443):    at java.lang.reflect.Method.invoke(Method.java:521)
03-14 00:32:28.378: D/MediaPlayer(4443):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-14 00:32:28.378: D/MediaPlayer(4443):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-14 00:32:28.378: D/MediaPlayer(4443):    at dalvik.system.NativeStart.main(Native Method)
03-14 00:32:28.378: E/TESTER(4443): java.lang.NullPointerException

Mein Code

package com.jordan.tester;

import java.io.File;
import java.io.IOException;

import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Main extends Activity implements OnClickListener {

    private Button beginRecord, beginPlay, stopRecord, stopPlay;
    private MediaPlayer player;
    private MediaRecorder recorder;
    private String TESTER_TAG = "TESTER";

    private File file;
    private String tempPath = "R.raw.toto_africa";
    private String fn = "temp.3gp";
    private File appPath;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        beginRecord = (Button) findViewById(R.id.beginRecord);
        beginPlay = (Button) findViewById(R.id.beginPlay);
        stopRecord = (Button) findViewById(R.id.stopRecord);
        stopPlay = (Button) findViewById(R.id.stopPlay);

        beginRecord.setOnClickListener(this);
        beginPlay.setOnClickListener(this);
        stopRecord.setOnClickListener(this);
        stopPlay.setOnClickListener(this);

        file = new File(this.getFilesDir(), fn);
        file.delete();

        appPath = this.getFilesDir();
        Log.e("appPath:", appPath.toString());
        file = new File(this.getFilesDir(), fn);
        tempPath = file.getAbsolutePath();
        Log.e("tempPath:", tempPath);

        Log.e("(1) Length of de file mon'?", String.valueOf(file.length()));
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        //Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {

        case R.id.beginRecord:
            try {
                startRecording();

            } catch (Exception e) {
                Log.e(TESTER_TAG, e.toString());
            }
            break;
        //////////////////////////////////////////////////////////////
        case R.id.beginPlay:
            try {
                startPlaying();
            } catch (Exception e) {
                Log.e(TESTER_TAG, e.toString());
            }
            break;
        /////////////////////////////////////////////////////////////
        case R.id.stopRecord:
            try {
                stopRecording();
            } catch (Exception e) {
                Log.e(TESTER_TAG, e.toString());
            }
            break;
        ///////////////////////////////////////////////////////////////
        case R.id.stopPlay:
            try {
                stopPlaying();
            } catch (Exception e) {
                Log.e(TESTER_TAG, e.toString());
            }
            break;
        }
    }

    private void startPlaying() {
        ditchMediaPlayer();

        try {
            player = MediaPlayer.create(getBaseContext(), Uri.parse(tempPath));
            player.start();
        } catch (IllegalStateException e) {
            Log.e(TESTER_TAG, e.toString());
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        }
    }

    private void stopPlaying() {
        ///
    }

    private void stopRecording() {
        if (recorder != null) {
            Log.e("Are ya dead maan?", "Kiss the Lucky egg");
            recorder.stop();
            recorder.release();
            Log.e("IS da file alive?", String.valueOf(file.exists()));
            Log.e("IS da file a file?", String.valueOf(file.isFile()));
            Log.e("(2) Length of de file mon'?", String.valueOf(file.length()));
        }
    }

    private void startRecording() {
        ditchMediaRecorder();
        //File outFile = new File(OUTPUT_FILE);
        recorder = new MediaRecorder();
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        recorder.setOutputFile(tempPath);

        try {
            recorder.prepare();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        recorder.start();
    }

    private void ditchMediaRecorder() {
        if (recorder != null) {
            recorder.release();
        }
    }

    private void ditchMediaPlayer() {
        if (player != null) {

            try {
                player.release();
            } catch (Exception e) {
                Log.e(TESTER_TAG, e.toString());
            }
        }
    }
}