Database Users

Application Request for Weight Watchers Points Calculator

Can someone make a .cab or an .exe program to calculate Weight Watchers points? I found this article on the internet where it looks like someone as already done it but they did not post it. Here is the article
http://geekswithblogs.net/cdahlinge...-mobile-meets-weight-watchers--mvp-style.aspx
Craig Dahlinger
<< Presenting at Richdmond code camp 2008.2 | Home | mshtml – the ongoing adventure >> windows mobile meets weight watchers : MVP style Ok, so I know it has been a long time since a post, but it has been really busy with work and family. I have been busy coding and learning lots of new stuff. I work with a great bunch of developers and my current team lead is a great mentor.
Well for the new year the wife and I decided to get back into shape. I started hitting the gym and so did she but she is also doing weight watchers with a friend. One of the things they do is they have to calculate points on a daily basis. These points are comprised of calories, fat and fiber. There is a formula for these three which in turn results in the number of points a particular item is. A few months ago I convinced the wife to get a windows mobile device (woo hoo!) and she is a good power user. So one night she asks me, “Is there a way I can just enter in the calories, fat and fiber on my phone and it tell me how many points something is?”. I did some searching and there are numerous online versions of the calculator but no native ones for windows mobile. I found the formula here, and started to get to work.
I wanted to approach this application using the MVP design pattern. I know it may be overkill for this simple of an application but I thought it would be good practice.
I started with the interface for the data model, in this case it would be the main caloric properties of food.
namespace WWPC.Common.Interfaces{ public interface IFoodModel { int Fiber { get; set; } int Calories { get; set; } float Fat { get; set; } int Points { get; set; } int CalculatePoints(); }}I then wrote up the interface for the view for the model.
namespace WWPC.Common.Interfaces{ public interface IFoodCalcView { int Calories { get; } int Fiber { get; } float Fat { get; } int Points { set; } event EventHandler DataChanged; }}Next, came the interface for the presenter.
public interface IFoodCalcPresenter { void OnCalculatePoints(); }
Ok, now that I got my main interfaces in place, time to code up the implementation. I started with the model first since this was the class that would provide the implementation for calculating the caloric points. Using the formula mentioned above, the CalculatePoints() method came out like so:
public int CalculatePoints(){ var calories = Convert.ToDecimal(Calories); var cal = calories / 50; var totalFat = Convert.ToDecimal(Fat); var fat = totalFat / 12; var fiber = Convert.ToDecimal(Fiber); return Points = Convert.ToInt32(Math.Round(cal + fat - (fiber/5), 0)); } With the model complete, I then moved to the presenter. The presenter would be responsible for binding the model to the view responding to the data changes in the view and rebinding those changes to the model. I made the presenter with an overloaded constructor to take a view and a model. The presenter then binds to the data changed event on the view which enables the presenter to update the model from the view. The OnCalculatePoints() method will update the view with the points value after using the model for calculation.
namespace WWPC.Common{ public class FoodPresenter : IFoodCalcPresenter { private readonly IFoodCalcView _View; private readonly IFoodModel _Model; public FoodPresenter(IFoodCalcView view, IFoodModel model) { _View = view; _View.DataChanged += new EventHandler(_View_DataChanged); _Model = model; } void _View_DataChanged(object sender, EventArgs e) { SetModelFromView(); } private void SetModelFromView() { _Model.Calories = _View.Calories; _Model.Fat = _View.Fat; _Model.Fiber = _View.Fiber; } #region IFoodCalcPresenter Members public void OnCalculatePoints() { _View.Points = _Model.CalculatePoints(); } #endregion }}
With the presenter done it was time to implement the view. I wanted a simple mobile form where you can enter in data quickly and then calculate the results. I initially tried using a label to display the result, but did not like it. I then tried a mobile gauge control, but that took up too much space on the small screen. Finally I decided to use the notification class for windows mobile. I did not use the managed wrapper version, I used the the version created by Christopher Fairbairn, found here. This version has an awesome implementation which exposes many features of the notification class. I wanted to give the user the ability to dismiss the notification when they were done reading the results. Also using the notification class the UI was able show the needed text boxes for entry and the SIP panel along with the results without needing to scroll the screen. Here is a screen shot of the main form.
Now with the controls in place on the form, I can implement the view. The form creates a new presenter and passed into it a new model during construction. When the calculate menu option is clicked the main form raises the data changed event then calls the OnCalculateMethod on the presenter. When the presenter binds the model to the view, during the set of the points value, the notification is shown to the user via the ShowNotification method.
namespace WWPC.Calc{ public partial class WWPCalculator : Form, IFoodCalcView { private readonly FoodPresenter _Presenter; private NotificationWithSoftKeys _Notification; public WWPCalculator() { InitializeComponent(); _Presenter = new FoodPresenter(this,new FoodModel()); } public int Calories { get { return (string.IsNullOrEmpty(txtCalories.Text)) ? 0 : Int32.Parse(txtCalories.Text); } } public int Fiber { get { return (cmbFiber.Text == "4 or more") ? 4 : (string.IsNullOrEmpty(cmbFiber.Text)) ? 0 :Int32.Parse(cmbFiber.Text); } } public float Fat { get { return (string.IsNullOrEmpty(txtFat.Text)) ? 0 : float.Parse(txtFat.Text); } } public int Points { set { ShowPointsNotification(value); } } public event EventHandler DataChanged; private void mnuExit_Click(object sender, EventArgs e) { this.Close(); } private void mnuCalculate_Click(object sender, EventArgs e) { if (DataChanged != null) this.DataChanged(sender, e); _Presenter.OnCalculatePoints(); } private void mnuClear_Click(object sender, EventArgs e) { txtCalories.Text = string.Empty; txtFat.Text = string.Empty; cmbFiber.Text = "0"; } private void ShowPointsNotification(int points) { _Notification = new NotificationWithSoftKeys { Text = String.Format("Total Points:{0}", points), Caption = "Weight Watchers Point Calculator", RightSoftKey = new NotificationSoftKey(SoftKeyType.Dismiss, "Dismiss"), }; _Notification.RightSoftKeyClick+=new EventHandler(_Notification_RightSoftKeyClick); _Notification.Visible = true; } void _Notification_RightSoftKeyClick(object sender, EventArgs e) { if (_Notification == null) return; _Notification.Visible = false; _Notification = null; } }}
Now, when it is all put together, it looks like so.
Below is a link to the source code. The project was done using Visual Studio 2008 against the windows mobile 5 sdk. It will also work against windows mobile 6 sdk, I just chose version 5 since that is the common sdk. Thanks for reading!!

[Q] Why cant I call a method from another class?

I have 2 classes in one .java file and it runs fine without errors or anything (the second class is used as a timer and changes variables every second) everything works but it wont call methods properly. Any idea of why this would be??? Heres my code of the second class.
Code:
class MyTime extends TimerTask{
//java.text.DateFormat format = SimpleDateFormat.getTimeInstance(SimpleDateFormat.MEDIUM, Locale.getDefault());
public game timecall2= new game();
public MyTime(Context ctx) {
// create internal instance
Context ctx2;
}
@Override
public void run() {
game.sec--;
if(game.sec==-1){game.sec=59;game.min--;}
game.Title2(); // set text in title bar
}
}

It would be easier if you explain more cleary, what you want to do.
Or post more code.
public game timecall2= new game();
I think, game is your first class?
Then you want to use the variable sec of the class game?
-> are they declared as static or why you don't call it over the object timecall2 you created?
Sry, but without more Code/Information to unterstand your problem, it's difficult to help. Also don't know, how skilled your are in programming.

*game* is the first class
I've tried calling the method through *timecall2* object but it doesn't help.
I've tried declaring the function as both static and no-static but nothing seems to change.
I've got lots of programming experience in other languages, but I'm less experienced with Java

And what's going wrong now?
Why don't you debug trough the code. Should be the easiest ways to find the problem.

You generally should use getters and setters for accessing variables inside of another class. Meaning that you have a method to set the value of the variable and a method to retrieve the value
Code:
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class MyClass extends Activity {
private static int mMin = 0;
private static int mSec = 0;
private TextView titleText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView titleText = (TextView) findViewById(R.id.titleText);
}
public static int getSec() {
return mSec;
}
public static void setSec(int newVal) {
mSec = newVal;
}
public static int getMin() {
return mMin;
}
public static void setMin(int newVal) {
mMin = newVal;
}
public static void setTitleText(String newVal) {
if (titleText != null) {
titleText.setText(newVal);
}
}
}
Notice the "static" modifier of the class methods.
Generally, you wouldn't instantiate this activity class. Especially if it already lives in memory. What I am guessing that you are doing here is that "game" is your activity and that MyTime is an object that you are using from inside of the activity and that you need to modify variables that live in the main Activity.
If that is the case then you would just do something like this:
Code:
import java.util.TimerTask;
import com.myapp.game.MyActivity;
class MyTime extends TimerTask {
private int sec = 0;
private int min = 0;
@Override
public void run() {
sec = MyActivity.getSec();
min = MyActivity.getMin();
sec--;
if(sec==-1) {
sec=59;
min--;
}
String title = String.valueOf(min)+":"+String.valueOf(sec); //obviously you need formatting
MyActivity.SetTitle(title); // set text in title bar
MyActivity.setSec(sec);
MyActivity.setMin(min);
}
}
That said... I just did the above as an example. This is entirely the wrong way to make a game timer. There is a better example here

From what I remember from C++, you would have a "base" class and then other classes beneath that base class.
To use the base class methods, the other classes had to be "friends". I'm a little rusty on my JAVA syntax...is "extends" the same thing as a friend class?

Java doesn't have friend functions, and "extends" means that the class is a subclass of whatever its extending.

To access a function/variable between classes that said function/variable must be static. Beware tho when do this depending on you implementation you must check for null variables. Since its static you can access you dont need a class object to access them through.
ak. SomeClass.function();
instead of using SomClass sc = new SomeClass(); sc.function();
since u can access it at any time its contents may not be initialized and be null. So ALWAYS check for null varaibles! lol. That or u can have one variable of that class to check if its class is initialized. such as..
SomeFunction.isInit();
where isInit(); is
private static initialized = false;
public static boolean isInit()
{
return initialized;
}
where in your onCreate & on onDestroy functions you set the initialized variable accordingly.
or..u could just do if(SomeClass.this!=null) lol :S
/me stops writting wot

Thanks for the input everyone. I've realised the problem (but still can't fix it). I can call methods in other classes from my timer class.... but my main class that has the methods that I need implements OnClickListener (public class game extends Activity implements OnClickListener) so it is ONLY updating the view methods when something is clicked on. How should I go about fixing it so that I can call methods that will update when a timer calls them (e.g. I display the remaining time in the title bar and it doesn't update the current time UNLESS a button is clicked on)

Why not run the timer as a thread in the activity class itself?

[Q] DatePickerDialog cancelclick

Hi there!
I have been trying to catch the Cancel click of a DatePickerDialog, because I want to do some additional stuff, when the user clicks on the Cancel Button.
I tried it like described in the second answer from esilver from this Question:
http://stackoverflow.com/questions/...erner-of-datepicker-dialog?tab=active#tab-top
But I can't get it to work like that. When do I have to call this onClick method?
Would be great if someone could help me with that!
Thanks!

cTrox said:
Hi there!
I have been trying to catch the Cancel click of a DatePickerDialog, because I want to do some additional stuff, when the user clicks on the Cancel Button.
I tried it like described in the second answer from esilver from this Question:
http://stackoverflow.com/questions/...erner-of-datepicker-dialog?tab=active#tab-top
But I can't get it to work like that. When do I have to call this onClick method?
Would be great if someone could help me with that!
Thanks!
Click to expand...
Click to collapse
the "checked" solution in that example seems wrong to me. but the second one people voted up seems correct.
You can also set the onDissmissListener which will catch if the user backs out with the back key ( recommended for user friendliness )
have a look here:
http://developer.android.com/refere...id.content.DialogInterface.OnDismissListener)
Also, since DatePickerDialog is a subclass of AlertDialog, you can set the buttons the same way:
http://developer.android.com/guide/topics/ui/dialogs.html#AlertDialog
That should get you started but feel free to post back if you get stuck again. And post the code you are using.

Also, one other thing, it might be useful to keep a private reference to your dialog in your activity class.
All those examples (in the API docs and tutorials) always show a new dialog created when "onCreateDialog(int ID)" is called by the OS on your activity and they never save any sort of reference to it. They give you just enough code to hang yourself
Anyways, while this is a perfectly normal way to do things, it doesnt give you a chance to follow what is actually happening with the dialog. It also makes it harder to reference your dialog from elsewhere in the activity.
Keeping a reference, and exploring the onPrepareDialog(int ID) method are good for learning what the OS is doing with your dialog. (IMHO)
hth

Thanks a lot for your answers. But I still can't figure out how to do it.
Here's my current Code:
Code:
private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker datePicker, int year, int monthOfYear,
int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
// do some more stuff...
}
};
Code:
protected Dialog onCreateDialog(int id) {
Calendar cDate = Calendar.getInstance();
int cyear = cDate.get(Calendar.YEAR);
int cmonth = cDate.get(Calendar.MONTH);
int cday = cDate.get(Calendar.DAY_OF_MONTH);
switch(id){
case DATE_DIALOG_ID:
return new DatePickerDialog(this, mDateSetListener, cyear, cmonth, cday);
}
return null;
}
With that I can just call showDialog(DATE_DIALOG_ID); and I get the dialog. Now, where do I have to implement this OnDismissListener and how?
Thanks!

there are lots of ways to do this but I broke it out into several parts so hopefully it seems more obvious what is happening.
Code:
//here's our field reference we could use later or reuse or whatever
private DatePickerDialog dateDialog = null;
protected Dialog onCreateDialog(int id)
{
//your calendar code here... just removed to save space
switch(id)
{
case DATE_DIALOG_ID:
dateDialog = new DatePickerDialog(this, mDateSetListener, cyear, cmonth, cday);
dateDialog.setButton ( DialogInterface.BUTTON_NEGATIVE, android.R.string.cancel, cancelBtnListener );
dateDialog.setOnDismissListener ( listener );
break;
}
return dateDialog;
}
//our dismiss listener
protected DialogInterface.OnDismissListener dismissListener = new OnDismissListener( )
{
@Override
public void onDismiss ( DialogInterface dialog )
{
// do your thang here
}
};
//our click listener
protected DialogInterface.OnClickListener cancelBtnListener = new OnClickListener( )
{
@Override
public void onClick ( DialogInterface dialog, int which )
{
dialog.dismiss ( );
// since we dismiss here, the next listener to get called
// is the dismiss listener. now we'll have consistent behavoir
}
};

Ah thank you very much! I was always confused, where to set the Button and the OnDismissListener.
It works perfectly like that!

Battery_Voice_Indicator

I want to develop an app that can speak up my battery percentage whenever it decreases every 10%. Also, i want the JARVIS type voice notification. I am currently using galaxy fit operating on gingerbread 2.3.6 (dxkt7). Please help me with coding as i am new to app development. A similar application if provided, will be highly helpful.

Jasveen Singh said:
I want to develop an app that can speak up my battery percentage whenever it decreases every 10%. Also, i want the JARVIS type voice notification. I am currently using galaxy fit operating on gingerbread 2.3.6 (dxkt7). Please help me with coding as i am new to app development. A similar application if provided, will be highly helpful.
Click to expand...
Click to collapse
You can get the battery percentage and display it on a textview with this code:
Code:
private TextView contentTxt;
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
[user=439709]@override[/user]
public void onReceive(Context arg0, Intent intent) {
// TODO Auto-generated method stub
int level = intent.getIntExtra("level", 0);
contentTxt.setText(String.valueOf(level) + "%");
}
};
[user=439709]@override[/user]
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
contentTxt = (TextView) this.findViewById(R.id.monospaceTxt);
this.registerReceiver(this.mBatInfoReceiver,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
Later, you can apply your own math skills to calculate if its multiples of 10 (Hint: easy would be to divide with 10 and check if reminder is 0).If it is, then you can pass on the string to android's native TTS class (Text To Speach) to synthesize the voice
Code:
public void speak (String string){
TTS = new TextToSpeech(this, this);
TTS.speak(string, TextToSpeech.QUEUE_FLUSH, null);
}
You want to register a service too.

vijai2011 said:
You can get the battery percentage and display it on a textview with this code:
Code:
private TextView contentTxt;
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
[user=439709]@override[/user]
public void onReceive(Context arg0, Intent intent) {
// TODO Auto-generated method stub
int level = intent.getIntExtra("level", 0);
contentTxt.setText(String.valueOf(level) + "%");
}
};
[user=439709]@override[/user]
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
contentTxt = (TextView) this.findViewById(R.id.monospaceTxt);
this.registerReceiver(this.mBatInfoReceiver,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
Later, you can apply your own math skills to calculate if its multiples of 10 (Hint: easy would be to divide with 10 and check if reminder is 0).If it is, then you can pass on the string to android's native TTS class (Text To Speach) to synthesize the voice
Code:
public void speak (String string){
TTS = new TextToSpeech(this, this);
TTS.speak(string, TextToSpeech.QUEUE_FLUSH, null);
}
You want to register a service too.
Click to expand...
Click to collapse
Thank you sir. what is meant by registering a service. Sir it would be very helpful if you can guide me completely. I am new to java too.

Jasveen Singh said:
Thank you sir. what is meant by registering a service. Sir it would be very helpful if you can guide me completely. I am new to java too.
Click to expand...
Click to collapse
Service lets you have your activity run in background irrespective of your UI activity. You can make a service by extends service and declare it explicitly in manifest with this:
Code:
<service android:enabled="true"
android:name=".ServiceActivityName"/>
Or you can also make changes to code to register for broadcast receive on battery state change and completely avoid using service. Also later would be less work on light on resources IMO.
P.S: Just a note that you cannot register for batter change in manifest but have to explicitly register in java. Source

Thank you Sir. Sir it would be very helpful if you can provide me with the complete code from starting to end. Also, please guide me where to include this code i.e. in which file .src file or manifest file. Sir i am using ADT bundle for app development. Also, i am from non computer science background, so don't know java. Please guide me from starting to end. Sir, will the battery percentage be shown in icon. It would be nice if the battery percentage is displayed like samsung running jellybean i.e. the percentage besides the battery icon.
Currently using:
Samsung galaxy fit
os: gingerbread 2.3.6 dxkt7

Jasveen Singh said:
Thank you Sir. Sir it would be very helpful if you can provide me with the complete code from starting to end. Also, please guide me where to include this code i.e. in which file .src file or manifest file. Sir i am using ADT bundle for app development. Also, i am from non computer science background, so don't know java. Please guide me from starting to end. Sir, will the battery percentage be shown in icon. It would be nice if the battery percentage is displayed like samsung running jellybean i.e. the percentage besides the battery icon.
Currently using:
Samsung galaxy fit
os: gingerbread 2.3.6 dxkt7
Click to expand...
Click to collapse
Well....if you don't know java, you either have to learn java and then android app development (easy after learning java) or hire a developer for a fee to make the app for you.
Sent from my GT-N7000 using xda app-developers app

[Q] Issues with adding objects to a photo taken by the user

I've been trying to learn to program for Android lately by simply coming up with ideas and implementing them. It started out easy enough with pulling information from an online RSS feed and showing this in a nice environment. But the current idea has me stumped.
I'd like the following to happen:
Take a picture using intent
Entire picture is shown in a new activity
Zoom in on a certain spot
Add predefined items to the picture
Press next which connects the items from left to right
Add some more items
Press next to connect the new items
Zoom out
Save the image
First taking a picture, this wasn't too hard using the camera intent:
Code:
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
I can then extract the absolute path from fileUri with the following line:
Code:
String path = new File(fileUri.getPath()).getAbsolutePath();
This path can be put in a bundle which can be put in an intent which is then used to start the activity that should show the image.
Code:
public class TestActivity extends Activity implements SurfaceHolder.Callback {
private static final String TAG = TestActivity.class.getSimpleName();
private String path = "";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SurfaceView view = new SurfaceView(this);
setContentView(view);
Intent intent = getIntent();
Bundle bundle = intent.getExtras();
path = bundle.getString("path");
view.getHolder().addCallback(this);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
Canvas canvas = holder.lockCanvas();
if (canvas == null) {
Log.d(TAG,"Can't draw because canvas is null");
}
else {
Bitmap bitmap = BitmapFactory.decodeFile(path);
Paint paint = new Paint();
if(bitmap == null) {
Log.d(TAG,"Can't draw because bitmap is null");
}
else {
canvas.drawBitmap(bitmap,0,0,paint);
}
holder.unlockCanvasAndPost(canvas);
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int frmt, int w, int h) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
}
The first issue here is that it of course doesn't show the entire photo. Not that surprising considering it's larger than the view. Ideally I'd like to zoom out to show the entire photograph. Once I've zoomed one way I'd assume that zooming in on the part that you want should also be possible.
Next is adding the objects. My idea was simply catching any touch events and adding a new object once the finger is released. This way I'd end up with a list of items with each having a draw function which can be called through the surfaceview when it is redrawn.
Connecting these items could simply be done by creating a line object and going through the list of all items and using their locations for the begin and endpoints of the lines
One of the big issues here is that the x and y locations would be relative to the screen, not to the photo. Which would mean that when you zoom back out the entire background would change but the actual items would remain at the same spot and in the same size.
I've been searching and searching for any tutorial or other question about the same issue, but either I've had no luck or I've been using the wrong keywords. And for all I know everything I have up till now could be wrong.
If anyone could give some pointers, or maybe knows a guide or tutorial somewhere or some better keywords I could use for searching I'd really appreciate it.

Xylon- said:
One of the big issues here is that the x and y locations would be relative to the screen, not to the photo. Which would mean that when you zoom back out the entire background would change but the actual items would remain at the same spot and in the same size.
Click to expand...
Click to collapse
would you just not need to either control or track the sample/scale if the image so that you know the 1st pixel displayed (top left) and the scale factor, then the eventX/Y can be processed to be relative to what you want ?