I found this code on the internet to change volume of an android device
`using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class SmartphoneVolumeController : MonoBehaviour
{
public AndroidNativeVolumeService GetAndroidVolumeService()
{
AndroidNativeVolumeService sercive = new AndroidNativeVolumeService();
return sercive;
}
public class AndroidNativeVolumeService
{
static int STREAMMUSIC;
static int FLAGSHOWUI = 1;
private static AndroidJavaObject audioManager;
private static AndroidJavaObject deviceAudio
{
get
{
if (audioManager == null)
{
AndroidJavaClass unityPlayerClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject currentActivity = unityPlayerClass.GetStatic<AndroidJavaObject>("currentActivity");
AndroidJavaObject context = currentActivity.Call<AndroidJavaObject>("getApplicationContext");
AndroidJavaClass audioManagerClass = new AndroidJavaClass("android.media.AudioManager");
AndroidJavaClass contextClass = new AndroidJavaClass("android.content.Context");
STREAMMUSIC = audioManagerClass.GetStatic<int>("STREAM_MUSIC");
string Context_AUDIO_SERVICE = contextClass.GetStatic<string>("AUDIO_SERVICE");
audioManager = context.Call<AndroidJavaObject>("getSystemService", Context_AUDIO_SERVICE);
if (audioManager != null)
Debug.Log("[AndroidNativeVolumeService] Android Audio Manager successfully set up");
else
Debug.Log("[AndroidNativeVolumeService] Could not read Audio Manager");
}
return audioManager;
}
}
private static int GetDeviceMaxVolume()
{
return deviceAudio.Call<int>("getStreamMaxVolume", STREAMMUSIC);
}
public float GetSystemVolume()
{
int deviceVolume = deviceAudio.Call<int>("getStreamVolume", STREAMMUSIC);
float scaledVolume = (float)(deviceVolume / (float)GetDeviceMaxVolume());
return scaledVolume;
}
public void SetSystemVolume(float volumeValue)
{
int scaledVolume = (int)(volumeValue * (float)GetDeviceMaxVolume());
deviceAudio.Call("setStreamVolume", STREAMMUSIC, scaledVolume, FLAGSHOWUI);
}
}
}
`
It works fine but now I am wondering if there is a way to do the same with an iPhone?
Related
I have an app which uses zxing to scan qr codes in the app. However when I build the app with these scripts in the scene the app crashes on startup. I thought it was something in the Awake() or Start() but I've wrapped those methods in a try catch, and even then I'm not getting any errors, and it doesn't crash on android and in the editor.
I don't have access to a Mac, and am using Unity Cloud Build to build it.
I also don't know how to enable permissions, I thought I did when creating the .p12 file, but I've also found that there's an info.plist file that I have to request permissions with.
Prior research I found this Unity Question about adding items to the Xcode project but not only did including the xcodeapi give me errors, but the using statements didn't work.
There are two scripts
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System;
public class WebCamController : MonoBehaviour {
public int desiredWidth = 1280;
public int desiredHeight = 720;
public int desiredFPS = 60;
public RawImage output;
[HideInInspector]
public WebCamTexture webcamTexture;
void Start ()
{
webcamTexture = new WebCamTexture(desiredWidth, desiredHeight, desiredFPS);
output.texture = webcamTexture;
Play();
}
public void Play()
{
webcamTexture.Play();
}
public void Pause()
{
webcamTexture.Stop();
}
}
and
using UnityEngine;
using System.Collections;
using ZXing;
using ZXing.QrCode;
using ZXing.Common;
using System;
public class CodeScanner : MonoBehaviour {
private static CodeScanner _instance;
public static CodeScanner Instance
{
get
{
if(null == _instance)
{
Debug.Log("Code Scanner Instance not found");
}
return _instance;
}
}
[Header("References")]
public WebCamController wcc;
[Header("Properties")]
private BarcodeReader codeScanner;
private string lastScanned = "";
public delegate void Found(string text, string type);
public event Found OnCodeScanned;
private bool active;
public void Awake()
{
_instance = this;
}
void Start () {
codeScanner = new BarcodeReader();
StartCoroutine(ReadCode());
wcc.Play();
}
IEnumerator ReadCode()
{
while (active)
{
try
{
var data = codeScanner.Decode(wcc.webcamTexture.GetPixels32(), wcc.webcamTexture.width, wcc.webcamTexture.height);
if (data != null)
{
//if (data.Text != lastScanned)
//{
OnCodeScanned(data.Text, data.BarcodeFormat.ToString());
//}
lastScanned = data.Text;
}
}
catch(Exception e)
{
}
yield return new WaitForSeconds(1.0f);
}
}
public void Activate()
{
wcc.Play();
active = true;
StartCoroutine(ReadCode());
}
public void Stop()
{
active = false;
wcc.Pause();
}
}
My device is added properly to the .p12 certificate I can compile and run the program without these scripts in the scene.
I am evaluating the performance of Microsoft's implementation of Avro, and at first I thought I was getting phenomenal performance until I realized it just wasn't serializing the entire message ;-)
In the following there is a simple hierarchy of messages decorated with [DataContract] (a base and two derived types). All members are decorated with the [DataMember] attribute. I create a serializer from the base message type and serialize a list of derived messages, but it appears to only serialize/deserialize the base class members. All of the derived message members are missing from the result.
Am I missing something? My application will require mixed message types.
FWIW I don't see any strings from the second derived type in the binary file, so I suspect the derived type members aren't being serialized.
Thanks, Greg
class Program
{
[DataContract(Name = "SideType", Namespace = "AvroMessage")]
public enum EventType
{
Unknown = 0,
One = 1,
Two = 2
}
[DataContract(Name = "MessageBase", Namespace = "AvroMessage")]
public class MessageBase
{
[DataMember(Name = "Subtype")]
public string Subtype;
[DataMember(Name = "Timestamp")]
public DateTime Timestamp;
[DataMember(Name = "GroupName")]
public string GroupName;
public override bool Equals(object obj)
{
MessageBase other = obj as MessageBase;
if (other == null) return false;
return Subtype == other.Subtype &&
Timestamp == other.Timestamp &&
GroupName == other.GroupName;
}
}
[DataContract(Name = "SubMessage1", Namespace = "AvroMessage")]
public class SubMessage1 : MessageBase
{
[DataMember(Name = "Volume")]
public int Volume;
[DataMember(Name = "Count")]
public int Count;
[DataMember(Name = "DetectedSide")]
public EventType Event;
public override bool Equals(object obj)
{
SubMessage1 other = obj as SubMessage1;
if (other == null) return false;
return Subtype == other.Subtype &&
Timestamp == other.Timestamp &&
GroupName == other.GroupName &&
Event == other.Event &&
Volume == other.Volume &&
Count == other.Count;
}
}
[DataContract(Name = "SubMessage2", Namespace = "AvroMessage")]
public class SubMessage2 : MessageBase
{
[DataMember(Name = "Name1")]
public string Name1;
[DataMember(Name = "Volume1")]
public int Volume1;
[DataMember(Name = "Name2")]
public string Name2;
[DataMember(Name = "Volume2")]
public int Volume2;
[DataMember(Name = "PriceMove")]
public double PriceMove;
public override bool Equals(object obj)
{
SubMessage2 other = obj as SubMessage2;
if (other == null) return false;
return Subtype == other.Subtype &&
Timestamp == other.Timestamp &&
GroupName == other.GroupName &&
Volume1 == other.Volume1 &&
Name1 == other.Name1 &&
Volume2 == other.Volume2 &&
Name2 == other.Name2 &&
PriceMove == other.PriceMove;
}
}
public class MessageFactory
{
public static IEnumerable<MessageBase> CreateMessages(int number)
{
Random ran = new Random();
List<MessageBase> retval = new List<MessageBase>();
for (int i = 0; i < number; i++)
{
if (ran.Next(2) == 0)
{
SubMessage1 sub1 = new SubMessage1();
sub1.Timestamp = DateTime.Now;
sub1.GroupName = "Group" + DateTime.Now.Millisecond.ToString();
sub1.Subtype = "SubMessag1";
sub1.Volume = ran.Next(10000);
sub1.Count = ran.Next(100);
if (ran.Next(2) == 0)
{
sub1.Event = EventType.One;
}
else
{
sub1.Event = EventType.Two;
}
retval.Add(sub1);
}
else
{
SubMessage2 sub2 = new SubMessage2();
sub2.Timestamp = DateTime.Now;
sub2.GroupName = "Group" + DateTime.Now.Millisecond.ToString();
sub2.Subtype = "SubMessag2";
sub2.Volume1 = ran.Next(1000);
sub2.PriceMove = ran.NextDouble() * 100 - 50;
sub2.Volume2 = ran.Next(1000);
sub2.Name1 = "Contract" + (DateTime.Now.Millisecond + ran.Next(5)).ToString();
sub2.Name2 = "Contract" + DateTime.Now.Millisecond.ToString();
retval.Add(sub2);
}
}
return retval;
}
}
public static void TestAvro(int count)
{
bool correct = false;
long serTicks = 0;
long deserTicks = 0;
Stopwatch sw = new Stopwatch();
sw.Reset();
var serializer = Microsoft.Hadoop.Avro.AvroSerializer.Create<MessageBase>();
MessageBase[] messages = new MessageBase[count];
using (var file = File.Create(#"C:\test_avro.bin"))
{
int i = 0;
foreach (var message in MessageFactory.CreateMessages(count))
{
messages[i++] = message;
sw.Start();
serializer.Serialize(file, message);
sw.Stop();
}
}
serTicks = sw.ElapsedTicks;
sw.Reset();
List<int> badMessages = new List<int>();
using (var file = File.OpenRead(#"C:\test_avro.bin"))
{
for (int i = 0; i < count; i++)
{
sw.Start();
MessageBase message = serializer.Deserialize(file);
sw.Stop();
SubMessage1 m1 = message as SubMessage1;
SubMessage2 m2 = message as SubMessage2;
bool areNull = (m1 == null) && (m2 == null); // Always true
if (!messages[i].Equals(message)) badMessages.Add(i);
}
}
deserTicks = sw.ElapsedTicks;
correct = badMessages.Count == 0;
long size = (new FileInfo(#"C:\test_proto.bin")).Length;
Console.WriteLine(String.Format("Correct: {0}, Time Out: {1}, , Time In: {2}, , Size: {3}", correct, serTicks, deserTicks, size));
}
static void Main(string[] args)
{
TestAvro(10000);
Console.ReadLine();
}
}
My bad - I forgot the KnownType attribute on the base class, one for each derived type. It works if you include the attributes.
I'm making this game in MonoGame (basically Xna) that uses DynamicSoundEffectInstance class. MonoGame does not have an implementation of DynamicSoundEffectInstance yet, so I made my own:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
#if MONOMAC
using MonoMac.OpenAL;
#else
using OpenTK.Audio.OpenAL;
#endif
using System.Threading;
namespace Microsoft.Xna.Framework.Audio
{
public sealed class DynamicSoundEffectInstance : IDisposable
{
private const int BUFFERCOUNT = 2;
private SoundState soundState = SoundState.Stopped;
private AudioChannels channels;
private int sampleRate;
private ALFormat format;
private bool looped = false;
private float volume = 1.0f;
private float pan = 0;
private float pitch = 0f;
private int sourceId;
private int[] bufferIds;
private int[] bufferIdsToFill;
private int currentBufferToFill;
private bool isDisposed = false;
private bool hasSourceId = false;
private Thread bufferFillerThread = null;
// Events
public event EventHandler<EventArgs> BufferNeeded;
internal void OnBufferNeeded(EventArgs args)
{
if (BufferNeeded != null)
{
BufferNeeded(this, args);
}
}
public DynamicSoundEffectInstance(int sampleRate, AudioChannels channels)
{
this.sampleRate = sampleRate;
this.channels = channels;
switch (channels)
{
case AudioChannels.Mono:
this.format = ALFormat.Mono16;
break;
case AudioChannels.Stereo:
this.format = ALFormat.Stereo16;
break;
default:
break;
}
}
public bool IsDisposed
{
get
{
return isDisposed;
}
}
public float Pan
{
get
{
return pan;
}
set
{
pan = value;
if (hasSourceId)
{
// Listener
// Pan
AL.Source(sourceId, ALSource3f.Position, pan, 0.0f, 0.1f);
}
}
}
public float Pitch
{
get
{
return pitch;
}
set
{
pitch = value;
if (hasSourceId)
{
// Pitch
AL.Source(sourceId, ALSourcef.Pitch, XnaPitchToAlPitch(pitch));
}
}
}
public float Volume
{
get
{
return volume;
}
set
{
volume = value;
if (hasSourceId)
{
// Volume
AL.Source(sourceId, ALSourcef.Gain, volume * SoundEffect.MasterVolume);
}
}
}
public SoundState State
{
get
{
return soundState;
}
}
private float XnaPitchToAlPitch(float pitch)
{
// pitch is different in XNA and OpenAL. XNA has a pitch between -1 and 1 for one octave down/up.
// openAL uses 0.5 to 2 for one octave down/up, while 1 is the default. The default value of 0 would make it completely silent.
return (float)Math.Exp(0.69314718 * pitch);
}
public void Play()
{
if (!hasSourceId)
{
bufferIds = AL.GenBuffers(BUFFERCOUNT);
sourceId = AL.GenSource();
hasSourceId = true;
}
soundState = SoundState.Playing;
if (bufferFillerThread == null)
{
bufferIdsToFill = bufferIds;
currentBufferToFill = 0;
OnBufferNeeded(EventArgs.Empty);
bufferFillerThread = new Thread(new ThreadStart(BufferFiller));
bufferFillerThread.Start();
}
AL.SourcePlay(sourceId);
}
public void Apply3D(AudioListener listener, AudioEmitter emitter)
{
Apply3D(new AudioListener[] { listener }, emitter);
}
public void Pause()
{
if (hasSourceId)
{
AL.SourcePause(sourceId);
soundState = SoundState.Paused;
}
}
public void Apply3D(AudioListener[] listeners, AudioEmitter emitter)
{
// get AL's listener position
float x, y, z;
AL.GetListener(ALListener3f.Position, out x, out y, out z);
for (int i = 0; i < listeners.Length; i++)
{
AudioListener listener = listeners[i];
// get the emitter offset from origin
Vector3 posOffset = emitter.Position - listener.Position;
// set up orientation matrix
Matrix orientation = Matrix.CreateWorld(Vector3.Zero, listener.Forward, listener.Up);
// set up our final position and velocity according to orientation of listener
Vector3 finalPos = new Vector3(x + posOffset.X, y + posOffset.Y, z + posOffset.Z);
finalPos = Vector3.Transform(finalPos, orientation);
Vector3 finalVel = emitter.Velocity;
finalVel = Vector3.Transform(finalVel, orientation);
// set the position based on relative positon
AL.Source(sourceId, ALSource3f.Position, finalPos.X, finalPos.Y, finalPos.Z);
AL.Source(sourceId, ALSource3f.Velocity, finalVel.X, finalVel.Y, finalVel.Z);
}
}
public void Dispose()
{
if (!isDisposed)
{
Stop(true);
AL.DeleteBuffers(bufferIds);
AL.DeleteSource(sourceId);
bufferIdsToFill = null;
hasSourceId = false;
isDisposed = true;
}
}
public void Stop()
{
if (hasSourceId)
{
AL.SourceStop(sourceId);
int pendingBuffers = PendingBufferCount;
if(pendingBuffers > 0)
AL.SourceUnqueueBuffers(sourceId, PendingBufferCount);
if (bufferFillerThread != null)
bufferFillerThread.Abort();
bufferFillerThread = null;
}
soundState = SoundState.Stopped;
}
public void Stop(bool immediate)
{
Stop();
}
public TimeSpan GetSampleDuration(int sizeInBytes)
{
throw new NotImplementedException();
}
public int GetSampleSizeInBytes(TimeSpan duration)
{
int size = (int)(duration.TotalMilliseconds * ((float)sampleRate / 1000.0f));
return (size + (size & 1)) * 16;
}
public void SubmitBuffer(byte[] buffer)
{
this.SubmitBuffer(buffer, 0, buffer.Length);
}
public void SubmitBuffer(byte[] buffer, int offset, int count)
{
if (bufferIdsToFill != null) {
AL.BufferData (bufferIdsToFill [currentBufferToFill], format, buffer, count, sampleRate);
AL.SourceQueueBuffer (sourceId, bufferIdsToFill [currentBufferToFill]);
currentBufferToFill++;
if (currentBufferToFill >= bufferIdsToFill.Length)
bufferIdsToFill = null;
else
OnBufferNeeded (EventArgs.Empty);
} else {
throw new Exception ("Buffer already full.");
}
}
private void BufferFiller()
{
bool done = false;
while (!done)
{
var state = AL.GetSourceState(sourceId);
if (state == ALSourceState.Stopped || state == ALSourceState.Initial)
AL.SourcePlay(sourceId);
if (bufferIdsToFill != null)
continue;
int buffersProcessed;
AL.GetSource(sourceId, ALGetSourcei.BuffersProcessed, out buffersProcessed);
if (buffersProcessed == 0)
continue;
bufferIdsToFill = AL.SourceUnqueueBuffers(sourceId, buffersProcessed);
currentBufferToFill = 0;
OnBufferNeeded(EventArgs.Empty);
}
}
public bool IsLooped
{
get
{
return looped;
}
set
{
looped = value;
}
}
public int PendingBufferCount
{
get
{
if (hasSourceId)
{
int buffersQueued;
AL.GetSource(sourceId, ALGetSourcei.BuffersQueued, out buffersQueued);
return buffersQueued;
}
return 0;
}
}
}
}
Now, I followed this tutorial on making dynamic sounds in Xna, which worked with my custom MonoGame class. However, when I run the project (Xamarin Studio 4, Mac OS X 10.8, with MonoGame 3.0.1), it throws this exception:
Buffer already full
Pointing at the code in my custom class:
public void SubmitBuffer(byte[] buffer, int offset, int count)
{
if (bufferIdsToFill != null) {
AL.BufferData (bufferIdsToFill [currentBufferToFill], format, buffer, count, sampleRate);
AL.SourceQueueBuffer (sourceId, bufferIdsToFill [currentBufferToFill]);
currentBufferToFill++;
if (currentBufferToFill >= bufferIdsToFill.Length)
bufferIdsToFill = null;
else
OnBufferNeeded (EventArgs.Empty);
} else {
throw new Exception ("Buffer already full."); //RIGHT HERE IS THE EXCEPTION
}
}
I commented out the exception, and ran it again. It played the sound, with pops in it, but it still played it. How can I clear the buffer, so it is not full? I followed this tutorial EXACTLY, so all the code I added to my project is in there.
Oh! Figured it out myself; I changed the pending buffer count from 3 to 2. My final submit buffer code was:
while(_instance.PendingBufferCount < 2)
SubmitBuffer();
Where the 2 is, used to be a 3. Now it no longer throws the exception.
I am trying to find the size of the object that I store on persistence store . I have programatically found out the size of object as shown in code but I can not find out the size of this object when it is stored on persistence store.
Does data get compressed automatically when it is comitted to store.
I m using Memory.getFlashStats().getFree(); to get the free size of persistence store before and after commitnig the object to store and the difference between the two values should be equal to the size of object that i have calculated.
please see the code
package Bean;
import java.util.Enumeration;
import java.util.Vector;
import net.rim.device.api.system.Memory;
import net.rim.device.api.system.MemoryStats;
import net.rim.device.api.system.PersistentObject;
import net.rim.device.api.system.PersistentStore;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.MenuItem;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.component.EditField;
import net.rim.device.api.ui.container.MainScreen;
import bean.UserCredentials;
public class MyStoreScreen extends MainScreen implements FieldChangeListener
{
private int nObjectSize;
static final long PERSISTENT_STORE_DEMO_ID = 0x42c16456ab0b5eabL;
private static PersistentObject oPersistenStore;
private int nFreePersistenceInStarting=Memory.getPersistentStats().getFree();
private int nFreePersistenceAtEnd;
ButtonField oCalculateMemButton ;
private MenuItem saveItem = new MenuItem("Save ", 110, 10)
{
public void run()
{
Dialog.alert("initially free memory ----------------------"+nFreePersistenceInStarting);
oPersistenStore = PersistentStore.getPersistentObject(PERSISTENT_STORE_DEMO_ID);
Vector storeVector = (Vector)oPersistenStore.getContents();
Vector userinfo ;
int size = (storeVector == null) ? 0 : storeVector.size();
if(size == 0)
{
userinfo = new Vector();
}
else
{
userinfo = storeVector;
}
UserCredentials oUserCredentials = new UserCredentials("akanksha","chandra",1,3434.3434,343545646);
for(int i =0;i<=100;i++)
{
userinfo.addElement(oUserCredentials);
}
nObjectSize= fnCalculateSizeOfObject(userinfo);
Dialog.alert("size of object is "+ nObjectSize);
synchronized(oPersistenStore)
{
oPersistenStore.setContents(userinfo);
oPersistenStore.commit();
}
}
};
private MenuItem getItem = new MenuItem( "Get item", 110, 11 )
{
public void run()
{
oPersistenStore = PersistentStore.getPersistentObject(PERSISTENT_STORE_DEMO_ID);
synchronized(oPersistenStore)
{
Vector arrCredential = (Vector)oPersistenStore.getContents();
if(arrCredential != null)
{
String dataContents = "";
int nSize = (arrCredential == null) ? 0 : arrCredential.size();
if(nSize != 0)
{
for (int i = 0; i < nSize; i++)
{
UserCredentials oUserCredentials = (UserCredentials)arrCredential.elementAt(i);
dataContents+="\n size of vector is "+nSize+ " username : "+oUserCredentials.getStrUsername()+"\n password : "+oUserCredentials.getStrPassword();
dataContents += "\n\nUser sal : "+oUserCredentials.getdSalary();
dataContents += "\n amount : "+oUserCredentials.getlAmount();
dataContents += "\n s no "+oUserCredentials.getnSerialNo();
}
Dialog.alert(dataContents);
}
else
{
Dialog.alert("Zero Elements ");
}
}
else
{
Dialog.alert("No contents ");
}
}
}
};
private MenuItem resetStoreItem = new MenuItem( "Delete Store", 110, 11 )
{
public void run()
{
int choice = Dialog.ask(Dialog.D_OK_CANCEL, "Do you want to delete ?");
if(choice == Dialog.D_OK)
{
// oPersistenStore = PersistentStore.getPersistentObject(PERSISTENT_STORE_DEMO_ID);
PersistentStore.destroyPersistentObject(PERSISTENT_STORE_DEMO_ID);
}
else
{
}
}
};
private MenuItem CalculateTotalFlashUsed = new MenuItem("calculate used flash size ", 0, 7)
{
public void run()
{
Dialog.alert("used size of Persistence Store is "+fnUsedPersistenceSize());
};
};
public MyStoreScreen()
{
oCalculateMemButton = new ButtonField("calculate free flash memory in starting", ButtonField.CONSUME_CLICK);
oCalculateMemButton.setChangeListener(this);
this.add(oCalculateMemButton);
this.addMenuItem(saveItem);
this.addMenuItem(getItem);
this.addMenuItem(resetStoreItem);
this.addMenuItem(CalculateTotalFlashUsed);
oPersistenStore = PersistentStore.getPersistentObject(PERSISTENT_STORE_DEMO_ID);
}
public void fieldChanged(Field field, int context)
{
if(field ==oCalculateMemButton)
{
// nFreeFlashInStarting =Memory.getFlashTotal();
// nFreeFlashInStarting =Memory.getFlashStats().getFree();
// nFreeFlashAtEnd =Memory.getFlashStats().getFree();
// String message = "total flash is Memory.getFlashStats().getAllocated(); "+nFreeFlashInStarting+" Memory.getFlashTotal() is : "+Memory.getFlashTotal();
String message = "total free flash memory in starting is :"+ nFreePersistenceInStarting;
Dialog.alert(message);
}
}
private int fnCalculateSizeOfObject(Vector userInfo )
{
int nSize = 0;
Enumeration oEnumeration = userInfo.elements();
while(oEnumeration.hasMoreElements())
{
UserCredentials oUserCredentials = (UserCredentials) oEnumeration.nextElement();
String UserName = oUserCredentials.getStrUsername();
String password = oUserCredentials.getStrPassword();
int nSerialNo = oUserCredentials.getnSerialNo();
double dSalary = oUserCredentials.getdSalary();
long lAmount = oUserCredentials.getlAmount();
nSize+= 4+8+8+fnCalculateSizeOfString(UserName)+fnCalculateSizeOfString(password);
}
return nSize;
}
private int fnCalculateSizeOfString(String strInputString)
{
//convert String to char array
char[] characterArray = strInputString.toCharArray();
int nlength = characterArray.length;
return nlength;
}
public int fnUsedPersistenceSize()
{
nFreePersistenceAtEnd = Memory.getPersistentStats().getFree();
int nUsedPersistenceMemory = nFreePersistenceInStarting -nFreePersistenceAtEnd;
return nUsedPersistenceMemory;
}
}
Memory.getFlashStats().getFree() is not that accurate, you can see it when measuring storage of the same object several times - values may be different every time.
The best way to measure object size is to calculate its fields size (what you actually doing).
I need to get the users latitude and longitude to display data in increasing order of distance.
I am using 2 phones in 2 different countries to test the app. It works fine with a bb bold 9700 when used in south asia. But does not with a bb 9650 when used in nyc.
I tried using the bb gps api based classes and also google tower based gps classes.
Both don't seem to work in nyc with bb 9650.I used other location based apps like yelp etc which work perfectly.
Attaching both the codes
Phone GPS
public class GPS_Location
{
private String log;
double longi;
double lati;
public GPS_Location()
{
new LocationTracker();
}
public boolean onClose()
{
Application.getApplication().requestBackground();
return false;
}
class LocationTracker extends TimerTask
{
private Timer timer;
private LocationProvider provider;
Criteria cr;
public LocationTracker()
{
timer = new Timer();
cr= new Criteria();
resetGPS();
timer.schedule(this, 0, 60000);
}
public void resetGPS()
{
try
{
provider = LocationProvider.getInstance(cr);
if(provider != null)
{
/*provider.setLocationListener(null, 0, 0, 0);
provider.reset();
provider = null;*/
provider.setLocationListener(new MyLocationListener(), 3, -1, -1);
}
//provider = LocationProvider.getInstance(null);
} catch(Exception e)
{
}
}
public void run()
{
System.out.println("********************");
}
private class MyLocationListener implements LocationListener
{
public void locationUpdated(LocationProvider provider, Location location)
{
if(location != null && location.isValid())
{
QualifiedCoordinates qc = location.getQualifiedCoordinates();
try
{
lati = location.getQualifiedCoordinates().getLatitude();
System.out.println("********************latitude :: "+lati);
longi = location.getQualifiedCoordinates().getLongitude();
System.out.println("********************longitude ::"+longi);
CustomSession.getInstance().setLatitude(lati);
CustomSession.getInstance().setLongitude(longi);
}
catch(Exception e)
{
}
}
}
public void providerStateChanged(LocationProvider provider, int newState)
{
//LocationTracker.this.resetGPS();
if(newState == LocationProvider.TEMPORARILY_UNAVAILABLE)
{
provider.reset();
provider.setLocationListener(null, 0, 0, -1);
}
}
}
}
}
cell tower google service
public class JsonGenerator {
public void locating() throws IOException{
byte[] postData = getGPSJsonObject().toString().getBytes();
JSONObject jsonObject = null;
HttpConnection gpsConnection;
DataOutputStream os;
DataInputStream dis;
String gpsString = retrunURLString("http://www.google.com/loc/json");
try {
gpsConnection = (HttpConnection) Connector.open(gpsString);
gpsConnection.setRequestMethod(HttpConnection.POST);
gpsConnection.setRequestProperty(
HttpProtocolConstants.HEADER_CONTENT_LENGTH, String
.valueOf(postData.length));
gpsConnection.setRequestProperty(
HttpProtocolConstants.HEADER_CONTENT_TYPE,
"application / requestJson");
os = gpsConnection.openDataOutputStream();
os.write(postData);
int rc = gpsConnection.getResponseCode();
if (rc != HttpConnection.HTTP_OK) {
return;
}
dis = gpsConnection.openDataInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int j = 0;
while ((j = dis.read()) != -1) {
baos.write(j);
}
byte[] data = baos.toByteArray();
String jsonString = new String(data);
try {
jsonObject = new JSONObject(jsonString);
} catch (JSONException e) {
e.printStackTrace();
}
JSONObject locationObject = jsonObject.getJSONObject("location");
if (locationObject.getDouble("latitude") != 0.0
&& locationObject.getDouble("longitude") != 0.0) {
System.out.println("Latitute is =================::::"+locationObject.getDouble("latitude"));
System.out.println("Llongitude is =================::::"+locationObject.getDouble("longitude"));
CustomSession.getInstance().setLatitude(locationObject.getDouble("latitude"));
CustomSession.getInstance().setLongitude(locationObject.getDouble("longitude"));
// Global.horizontal_accuracy = locationObject
// .getDouble("accuracy");
// Global.locAvailable = true;
}
} catch (JSONException e) {
// TODO: handle exception
e.printStackTrace();
}
}
public JSONObject getGPSJsonObject() {
JSONObject jsonString = new JSONObject();
try {
jsonString.put("version", "1.1.0");
jsonString.put("host", "maps.google.com");
int x = RadioInfo.getMCC(RadioInfo.getCurrentNetworkIndex());
jsonString.put("home_mobile_country_code", Integer.parseInt(Integer
.toHexString(x)));
jsonString.put("home_mobile_network_code", RadioInfo
.getMNC(RadioInfo.getCurrentNetworkIndex()));
int radio = RadioInfo.getNetworkType();
if(radio==RadioInfo.NETWORK_CDMA){
jsonString.put("radio_type", "cdma");
}
else{
jsonString.put("radio_type", "gsm");
}
jsonString.put("carrier", RadioInfo.getCurrentNetworkName());
jsonString.put("request_address", true);
jsonString.put("address_language", "en_GB");
CellTower cellInfo = new CellTower(Integer.toHexString(x), GPRSInfo
.getCellInfo().getLAC(), GPRSInfo.getCellInfo().getRSSI(),
GPRSInfo.getCellInfo().getCellId(), 0, RadioInfo
.getMNC(RadioInfo.getCurrentNetworkIndex()));
Hashtable map = new Hashtable();
map.put("mobile_country_code", new Integer(Integer
.parseInt(cellInfo.mobileCountryCode)));
map.put("location_area_code",
new Integer(cellInfo.locationAreaCode));
map.put("signal_strength", new Integer(cellInfo.signalStrength));
map.put("cell_id", new Integer(cellInfo.cellID));
map.put("age", new Integer(0));
map.put("mobile_network_code", new Integer(
cellInfo.mobileNetworkCode));
JSONArray array = new JSONArray();
array.put(0, map);
jsonString.put("cell_towers", array);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jsonString;
}
public static String retrunURLString(String url) {
String urlString = null;
if (WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) {
// WIFI
urlString = url + ";interface=wifi";
} else {
int coverageStatus = CoverageInfo.getCoverageStatus();
ServiceRecord record = getWAP2ServiceRecord();
if (record != null
&& (coverageStatus & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
// WAP 2.0
urlString = url + ";deviceside=true;ConnectionUID="
+ record.getUid();
} else if ((coverageStatus & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS) {
// BES/MDS
urlString = url + ";deviceside=false";
} else if ((coverageStatus & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
// Direct TCP/IP
urlString = url + ";deviceside=true";
} else if ((coverageStatus & CoverageInfo.COVERAGE_BIS_B) == CoverageInfo.COVERAGE_BIS_B) {
// BIS
urlString = url + ";deviceside=false;ConnectionUID="
+ record.getUid();
}
}
return urlString;
}
protected static ServiceRecord getWAP2ServiceRecord() {
ServiceBook sb = ServiceBook.getSB();
ServiceRecord[] records = sb.getRecords();
for (int i = 0; i < records.length; i++) {
String cid = records[i].getCid().toLowerCase();
String uid = records[i].getUid().toLowerCase();
if (cid.indexOf("wptcp") != -1 && uid.indexOf("wifi") == -1
&& uid.indexOf("mms") == -1) {
return records[i];
}
}
return null;
}
private class CellTower {
public String mobileCountryCode;
public int locationAreaCode;
public int signalStrength;
public int cellID;
public int age;
public int mobileNetworkCode;
private CellTower(String mcc, int lac, int ss, int ci, int a, int mnc) {
mobileCountryCode = mcc;
locationAreaCode = lac;
signalStrength = ss;
cellID = ci;
age = a;
mobileNetworkCode = mnc;
}
}
}
Ideally you should be using multiple fix methods (your Criteria) to gather GPS information. Using just the default will not work in all circumstances, so you need to have fallback options. Here are the Criteria, in preferred order, that I use in the States and seems to do well. You just have to loop through them until you have a set that works.
//Speed optimal
BlackBerryCriteria speed = new BlackBerryCriteria();
speed.setHorizontalAccuracy(50);
speed.setPreferredPowerConsumption(Criteria.POWER_USAGE_HIGH);
speed.setCostAllowed(true);
speed.setPreferredResponseTime(10000);
//MS-Based
BlackBerryCriteria msBased = new BlackBerryCriteria();
msBased.setPreferredPowerConsumption(BlackBerryCriteria.POWER_USAGE_MEDIUM);
msBased.setHorizontalAccuracy(50);
msBased.setVerticalAccuracy(50);
msBased.setCostAllowed(true);
msBased.setPreferredResponseTime(10000);
//Assisted mode
BlackBerryCriteria assisted = new BlackBerryCriteria();
assisted.setPreferredPowerConsumption(BlackBerryCriteria.POWER_USAGE_HIGH);
assisted.setHorizontalAccuracy(50);
assisted.setVerticalAccuracy(50);
assisted.setCostAllowed(true);
assisted.setPreferredResponseTime(10000);
//Autonomous
BlackBerryCriteria autonomous = new BlackBerryCriteria();
autonomous.setPreferredPowerConsumption(BlackBerryCriteria.POWER_USAGE_MEDIUM);
autonomous.setHorizontalAccuracy(BlackBerryCriteria.NO_REQUIREMENT);
autonomous.setVerticalAccuracy(BlackBerryCriteria.NO_REQUIREMENT);
autonomous.setCostAllowed(true);
autonomous.setPreferredResponseTime(180000);
//Cell site
BlackBerryCriteria cell = new BlackBerryCriteria();
cell.setPreferredPowerConsumption(BlackBerryCriteria.POWER_USAGE_LOW);
cell.setHorizontalAccuracy(BlackBerryCriteria.NO_REQUIREMENT);
cell.setVerticalAccuracy(BlackBerryCriteria.NO_REQUIREMENT);
cell.setCostAllowed(true);
cell.setPreferredResponseTime(180000);