Android: проблемы интеграции кода диктофона с получением и отображением местоположения пользователя - PullRequest
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Android: проблемы интеграции кода диктофона с получением и отображением местоположения пользователя

0 голосов
/ 15 ноября 2011

Я пытался интегрировать мое очень простое приложение для записи голоса с возможностью определения местоположения текущего пользователя и отображения его на экране. Я хочу, чтобы он начал искать местоположение сразу после запуска приложения, но у меня проблемы с логикой в ​​моем коде. Я все еще учусь, но я прочитал много документации и много различных учебных пособий / примеров кода, но, похоже, ничего не работает. Я думаю, что я очень близок к своему решению, мое приложение для записи голоса работает, однако оно не очень хорошо подходит для определения местоположения пользователя ... Можете ли вы, ребята, помочь мне? Любая помощь с благодарностью!

Вот мой код (обратите внимание, он может показаться немного длинным, но это только из-за дополнительного пробела): 

public class AndroidPOIActivity extends Activity implements LocationListener
{
    EditText textBoxMessage = null;

    private static final String LOG_TAG = "AudioRecordTest";
    private static String mFileName = null;

    private RecordButton mRecordButton = null;
    private MediaRecorder mRecorder = null;

    private PlayButton   mPlayButton = null;
    private MediaPlayer   mPlayer = null;

    /***************** Record Button ********************/
    private void onRecord(boolean start) {
        if (start) {
            startRecording();
        } else {
            stopRecording();
        }
    }

    private void startRecording() 
    {
        mRecorder = new MediaRecorder();
        mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        mRecorder.setOutputFile(mFileName);
        mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

        try {
            mRecorder.prepare();
        } catch (IOException e) {
            Log.e(LOG_TAG, "prepare() failed");
        }

        mRecorder.start();
    }

    private void stopRecording() {
        mRecorder.stop();
        mRecorder.release();
        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);
        }
    }

    /***************** Play Button ********************/
    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 onPlay(boolean start) {
        if (start) {
            startPlaying();
        } else {
            stopPlaying();
        }
    }

    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);
        }
    }
   /***************** File Saver ********************/

    public AndroidPOIActivity() {
        mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
        mFileName += "/audiorecordtest.3gp";
    }

    /***************** On Create ********************/
    @Override
    public void onCreate(Bundle icicle) 
    {
        super.onCreate(icicle);
        //preparing linear layout
        LinearLayout ll = new LinearLayout(this);

        //record button
        mRecordButton = new RecordButton(this);
        ll.addView(mRecordButton,
            new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                0));

        //play button
        mPlayButton = new PlayButton(this);
        ll.addView(mPlayButton,
            new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                0));

        TextView locationText = (TextView)this.findViewById(R.id.lblLocationInfo);

        ll.addView(locationText, 
                new LinearLayout.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        0));

        //getSystemService(LOCATION_SERVICE);           

        //setting linear layout
        setContentView(ll);

        //getting a reference to the system location manager
        LocationManager locationManager = (LocationManager)this.getSystemService(LOCATION_SERVICE);

        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

        if (location != null) 
        {
          Log.d(LOG_TAG, location.toString());
          this.onLocationChanged(location);
        }

        //defining listener that responds to location updates

        LocationListener locationListener = new LocationListener()
        {
            public void onLocationChanged(Location location) 
            {
                // Called when a new location is found by the network location provider.
                makeUseOfNewLocation(location);
            }

            public void onStatusChanged(String provider, int status, Bundle extras) {}

            public void onProviderEnabled(String provider) {}

            public void onProviderDisabled(String provider) {}
        };        
        // Register the listener with the Location Manager to receive location updates
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

    }

    @Override
    public void onPause() {
        super.onPause();
        if (mRecorder != null) {
            mRecorder.release();
            mRecorder = null;
        }

        if (mPlayer != null) {
            mPlayer.release();
            mPlayer = null;
        }
    }

    @Override
    public void onProviderDisabled(String arg0)
    {
        // TODO Auto-generated method stub              
    }
    @Override
    public void onProviderEnabled(String arg0)
    {
        // TODO Auto-generated method stub              
    }
    @Override
    public void onStatusChanged(String arg0, int arg1, Bundle arg2) 
    {
        // TODO Auto-generated method stub              
    }
    @Override
       public void onLocationChanged(Location location)
    {
        makeUseOfNewLocation(location);     
    }
    private void makeUseOfNewLocation(Location location)
    {       
        double lon = (double) (location.getLongitude() * 1E6);
        double lat = (double) (location.getLatitude() * 1E6);

        int lontitude = (int)lon;
        int latitude = (int)lat;
        Toast.makeText(getApplicationContext(), "New Lontitue = "+ lontitude +"\n New Latitute = "+ latitude, Toast.LENGTH_LONG).show();
    }
}

Мой код также имеет разрешения в манифесте:

Вот мой main.xml: 

<?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">

    <TextView android:id="@+id/lblLocationInfo"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:text="Waiting for location..."/>

    <Button android:id="@+id/mRecordButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Start Recording"
        android:layout_gravity="center"></Button>

    <Button android:id="@+id/mPlayButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Start Playing"
        android:layout_gravity="center"></Button>
</LinearLayout>

StackTrace: [2011-11-15 14:51:47 - AndroidPOI] ------------------------------ 

[2011-11-15 14:51:47 - AndroidPOI] Android Launch!
[2011-11-15 14:51:47 - AndroidPOI] adb is running normally.
[2011-11-15 14:51:47 - AndroidPOI] Performing org.me.androidpoi.AndroidPOIActivity activity launch
[2011-11-15 14:51:47 - AndroidPOI] Automatic Target Mode: launching new emulator with compatible AVD 'android_2-2'
[2011-11-15 14:51:47 - AndroidPOI] Launching a new emulator with Virtual Device 'android_2-2'
[2011-11-15 14:52:17 - Emulator] emulator: emulator window was out of view and was recentred
[2011-11-15 14:52:17 - Emulator] 
[2011-11-15 14:52:36 - AndroidPOI] New emulator found: emulator-5554
[2011-11-15 14:52:36 - AndroidPOI] Waiting for HOME ('android.process.acore') to be launched...
[2011-11-15 14:53:51 - AndroidPOI] HOME is up on device 'emulator-5554'
[2011-11-15 14:53:51 - AndroidPOI] Uploading AndroidPOI.apk onto device 'emulator-5554'
[2011-11-15 14:53:51 - AndroidPOI] Installing AndroidPOI.apk...
[2011-11-15 14:54:27 - AndroidPOI] Success!
[2011-11-15 14:54:27 - AndroidPOI] Starting activity org.me.androidpoi.AndroidPOIActivity on device emulator-5554
[2011-11-15 14:54:29 - AndroidPOI] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=org.me.androidpoi/.AndroidPOIActivity }

LogCat: 

11-15 14:53:19.335: ERROR/Zygote(32): setreuid() failed. errno: 2
11-15 14:53:35.093: ERROR/Zygote(32): setreuid() failed. errno: 17
11-15 14:53:37.553: ERROR/BatteryService(67): usbOnlinePath not found
11-15 14:53:37.553: ERROR/BatteryService(67): batteryVoltagePath not found
11-15 14:53:37.553: ERROR/BatteryService(67): batteryTemperaturePath not found
11-15 14:53:37.603: ERROR/SurfaceFlinger(67): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake
11-15 14:53:47.964: ERROR/EventHub(67): could not get driver version for /dev/input/mouse0, Not a typewriter
11-15 14:53:47.964: ERROR/EventHub(67): could not get driver version for /dev/input/mice, Not a typewriter
11-15 14:53:48.414: ERROR/System(67): Failure starting core service
11-15 14:53:48.414: ERROR/System(67): java.lang.SecurityException
11-15 14:53:48.414: ERROR/System(67):     at android.os.BinderProxy.transact(Native Method)
11-15 14:53:48.414: ERROR/System(67):     at android.os.ServiceManagerProxy.addService(ServiceManagerNative.java:146)
11-15 14:53:48.414: ERROR/System(67):     at android.os.ServiceManager.addService(ServiceManager.java:72)
11-15 14:53:48.414: ERROR/System(67):     at com.android.server.ServerThread.run(SystemServer.java:184)
11-15 14:53:49.825: ERROR/SoundPool(67): error loading /system/media/audio/ui/Effect_Tick.ogg
11-15 14:53:49.845: ERROR/SoundPool(67): error loading /system/media/audio/ui/KeypressStandard.ogg
11-15 14:53:49.845: ERROR/SoundPool(67): error loading /system/media/audio/ui/KeypressSpacebar.ogg
11-15 14:53:49.857: ERROR/SoundPool(67): error loading /system/media/audio/ui/KeypressDelete.ogg
11-15 14:53:49.857: ERROR/SoundPool(67): error loading /system/media/audio/ui/KeypressReturn.ogg
11-15 14:53:52.643: ERROR/ThrottleService(67): Could not open GPS configuration file /etc/gps.conf
11-15 14:53:54.635: ERROR/logwrapper(149): executing /system/bin/tc failed: No such file or directory
11-15 14:53:54.786: ERROR/logwrapper(150): executing /system/bin/tc failed: No such file or directory
11-15 14:53:54.903: ERROR/logwrapper(151): executing /system/bin/tc failed: No such file or directory
11-15 14:54:10.153: ERROR/HierarchicalStateMachine(67): TetherMaster - unhandledMessage: msg.what=3
11-15 14:54:30.744: ERROR/AndroidRuntime(279): FATAL EXCEPTION: main
11-15 14:54:30.744: ERROR/AndroidRuntime(279): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.me.androidpoi/org.me.androidpoi.AndroidPOIActivity}: java.lang.NullPointerException
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.os.Looper.loop(Looper.java:123)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.ActivityThread.main(ActivityThread.java:4627)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at java.lang.reflect.Method.invokeNative(Native Method)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at java.lang.reflect.Method.invoke(Method.java:521)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at dalvik.system.NativeStart.main(Native Method)
11-15 14:54:30.744: ERROR/AndroidRuntime(279): Caused by: java.lang.NullPointerException
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.view.ViewGroup.addViewInner(ViewGroup.java:1969)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.view.ViewGroup.addView(ViewGroup.java:1865)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.view.ViewGroup.addView(ViewGroup.java:1845)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at org.me.androidpoi.AndroidPOIActivity.onCreate(AndroidPOIActivity.java:169)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
11-15 14:54:30.744: ERROR/AndroidRuntime(279):     ... 11 more

Ответы [ 2 ]

1 голос
/ 16 ноября 2011

Ого, это действительно запутано, попробуйте этот код: 

public class AndroidPOIActivity extends Activity 
{
    EditText textBoxMessage = null;

    private static final String LOG_TAG = "AudioRecordTest";
    private static String mFileName = null;

    private RecordButton mRecordButton = null;
    private MediaRecorder mRecorder = null;

    private PlayButton   mPlayButton = null;
    private MediaPlayer   mPlayer = null;

    /***************** Record Button ********************/
    private void onRecord(boolean start) {
        if (start) {
            startRecording();
        } else {
            stopRecording();
        }
    }

    private void startRecording() 
    {
        mRecorder = new MediaRecorder();
        mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        mRecorder.setOutputFile(mFileName);
        mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

        try {
            mRecorder.prepare();
        } catch (IOException e) {
            Log.e(LOG_TAG, "prepare() failed");
        }

        mRecorder.start();
    }

    private void stopRecording() {
        mRecorder.stop();
        mRecorder.release();
        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);
        }
    }

    /***************** Play Button ********************/
    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 onPlay(boolean start) {
        if (start) {
            startPlaying();
        } else {
            stopPlaying();
        }
    }

    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);
        }
    }
   /***************** File Saver ********************/

    public AndroidPOIActivity() {
        mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
        mFileName += "/audiorecordtest.3gp";
    }

    /***************** On Create ********************/
    @Override
    public void onCreate(Bundle icicle) 
    {
        super.onCreate(icicle);
        //preparing linear layout
        LinearLayout ll = new LinearLayout(this);

        //record button
        mRecordButton = new RecordButton(this);
        ll.addView(mRecordButton,
            new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                0));

        //play button
        mPlayButton = new PlayButton(this);
        ll.addView(mPlayButton,
            new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                0));

        TextView locationText = new TextView(this);

        ll.addView(locationText, 
                new LinearLayout.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        0));


        setContentView(ll);

    }

    private LocationListener locationListener = new LocationListener()
    {
        public void onLocationChanged(Location location) 
        {
            // Called when a new location is found by the network location provider.
            makeUseOfNewLocation(location);
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {}

        public void onProviderEnabled(String provider) {}

        public void onProviderDisabled(String provider) {}
    };    

    @Override
    public void onPause() {
        super.onPause();
        if (mRecorder != null) {
            mRecorder.release();
            mRecorder = null;
        }

        if (mPlayer != null) {
            mPlayer.release();
            mPlayer = null;
        }
        LocationManager locationManager = (LocationManager)this.getSystemService(LOCATION_SERVICE);
        locationManager.removeUpdates(locationListener);
    }

    @Override
    protected void onResume() {
        LocationManager locationManager = (LocationManager)this.getSystemService(LOCATION_SERVICE);
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
        super.onResume();
    }


    private void makeUseOfNewLocation(Location location)
    {       
        double lon = (double) (location.getLongitude() * 1E6);
        double lat = (double) (location.getLatitude() * 1E6);

        int lontitude = (int)lon;
        int latitude = (int)lat;
        Toast.makeText(getApplicationContext(), "New Lontitue = "+ lontitude +"\n New Latitute = "+ latitude, Toast.LENGTH_LONG).show();
    }
}
1 голос
/ 16 ноября 2011

Вы получаете исключение нулевого указателя: 

1-15 14:54:30.744: ERROR/AndroidRuntime(279): at org.me.androidpoi.AndroidPOIActivity.onCreate(AndroidPOIActivity.java:169)

Я не знаю, где в вашем коде строка 169, но проверьте это и убедитесь, что все там кошерно.

...