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!!
Hi,
I am trying to write simple cache class. Class uses SoftReference in order to avoid killing application.
Code:
import java.lang.ref.SoftReference;
import java.util.HashMap;
import java.util.Map;
public class MemoryCache {
// singleton implemtation
private static MemoryCache instance = null;
protected MemoryCache() { }
public static MemoryCache getInstance() {
if(instance == null) {
instance = new MemoryCache();
}
return instance;
}
//
private Map<String, SoftReference<Object>> cachedItems = new HashMap<String, SoftReference<Object>>();
public void saveCacheItem(String itemId, Object objForCache) {
cachedItems.put(itemId, new SoftReference<Object>(objForCache));
}
public Object getCacheItem(String itemId) {
if(cacheItemExists(itemId)) {
return cachedItems.get(itemId).get();
}
else {
return null;
}
}
public Boolean cacheItemExists(String itemId) {
if(cachedItems.containsKey(itemId)) {
if(cachedItems.get(itemId) != null ) {
return true;
}
}
return false;
}
public void deleteCacheItem(String itemId) {
if(cachedItems.containsKey(itemId)) {
cachedItems.remove(itemId);
}
}
}
However, referenced objects are cleaned too early. Even though cached item is a class with just few attributes, its lifespan is very short.
I tested this functionality only on android emulator.
Does my class cause problem or garbage collector/vm?
I'm currently developing an app and from within the app I'd like to let the user select custom images to use.
Right now I use
Code:
public final int GOT_IMAGE =1;
private void getImage() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
mUri = Uri.fromFile(new
File(Environment.getExternalStorageDirectory(),"temp_image" +
".jpg"));
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mUri);
try {
intent.putExtra("return-data", true);
startActivityForResult(intent,GOT_IMAGE );
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
}
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (resultCode != RESULT_OK) {
customImgChk.setChecked(false);
return;
}
if (requestCode == GOT_IMAGE) {
Bitmap image = BitmapFactory.decodeFile(mUri.getPath());
if (image!=null)
{
image = WPUtil.resizeBitmap(image, WPUtil.IMAGE_SIZE_X,
WPUtil.IMAGE_SIZE_Y);
}
else
{
customImgChk.setChecked(false);
Toast.makeText(this.getApplicationContext(), "Failed to grab
image!", Toast.LENGTH_LONG).show();
}
}
}
This works great on a few devices but not all. I'd really like to come up with a universal way to perform this function but I have not found a way to do it yet.
I've thought about writing up my own image selector and cropper but I'd rather not re-invent the wheel.
Can anybody suggest a decent app/library that I can use to select and or crop photos from within my app?
ImageJ is great. It is a stand alone app but there are published apis for integrating into your own apps.
*its better than that, its open source and you can use the jar and just ignore the gui library
Might look into that
http://rsbweb.nih.gov/ij/
From something awesome
You are new to java development and want to get buttons working?
Maybe you are a Pro but want a reminder?
whatever you are this Guide is to help you to make buttons/check boxes...etc working and functional
Some people are distracted between guides over internet and want the easiest way to get their project working, me too
Steps :
1-Define the button :
Code:
Button btn1;
Checkbox chkbox1;
RadioButton radio1;
2- Intialize it :
Code:
btn1 = (Button) findViewById(R.id.btn1);
chkbox1= (Checkbox ) findViewById(R.id.chkbox1);
radio1= (RadioButton) findViewById(R.id.radio1);
3-Add the listener :
Button:
Code:
btn1.setOnClickListener(new OnClickListener() {
@SuppressWarnings("deprecation")
@Override
public void onClick(View arg0) {
//Write awesome code here
}
});
CheckBox :
Code:
chkbox1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (start.isChecked()) {
//if the checkbox checked
} else {
//if not checked
}
}
});
}
radio button:
Code:
public void onRadioButtonClicked(View view) {
boolean checked = ((RadioButton) view).isChecked();
switch(view.getId()) {
case R.id.radio1:
if (checked){
}
else{
}
break;
}
}
or use it in a radio Group :
Code:
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch(view.getId()) {
case R.id.radio1:
if (checked)
//Write code
break;
case R.id.radio2:
if (checked)
//Write code
break;
}
}
Also insted of this you can use a onCheckedChanged for a radio button (Thanks for GalaxyInABox)
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
____________________________________________________________________
____________________________________________________________________
Also you can implement a Onclicklistener for the whole class to save resources : (thanks for @Jonny )
after defining and initializing your objects add this :
Code:
OnClickListener click_listener = new OnClickListener() {
public void onClick(View view) {
int id = view.getId();
if (id == your_id) {
//do stuff for this object
} else if (id == your_id2) {
//do other stuff for diffrent object
} else if (id == your_id3) {
//and so on
}
}
};
To do list :
-add on touch listeners
-add on drag listeners
Note : you can add a click listener to almost any thing (Textview or imageView or even EditText) just using the same method of adding listener to button
also there is some other ways to add a listener but this is the fastest and less disturbing :good:
If this guide is useful, press thanks
@ OP
CheckBox and RadioButtons don't they provide a CheckedChangeListener ?
Sent from my GT-S5302 using Tapatalk 2
sak-venom1997 said:
@ OP
CheckBox and RadioButtons don't they provide a CheckedChangeListener ?
Click to expand...
Click to collapse
Yes, and now you can use
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
to get the checked button. They are pretty much the same, but you can use view.getTag() easier in the first one.
And @mohamedrashad please show how to put the listener into a inner class. Many people don't know/use it, but it's that useful!
GalaxyInABox said:
Yes, and now you can use
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
to get the checked button. They are pretty much the same, but you can use view.getTag() easier in the first one.
Click to expand...
Click to collapse
I meant that the op shuld edit this guide and use those instead of OnCickListeners
GalaxyInABox said:
And @mohamedrashad please show how to put the listener into a inner class. Many people don't know/use it, but it's that useful!
Click to expand...
Click to collapse
ya new with java8 it will be a nice usage scenario of lambadas
Sent from my GT-S5302 using Tapatalk 2
GalaxyInABox said:
Yes, and now you can use
Code:
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (radioGroup.getCheckedRadioButtonId()) {
//Code
}
}
to get the checked button. They are pretty much the same, but you can use view.getTag() easier in the first one.
And @mohamedrashad please show how to put the listener into a inner class. Many people don't know/use it, but it's that useful!
Click to expand...
Click to collapse
sak-venom1997 said:
@ OP
CheckBox and RadioButtons don't they provide a CheckedChangeListener ?
Sent from my GT-S5302 using Tapatalk 2
Click to expand...
Click to collapse
ok, i will add this
You can also add onClick property in XML and then handle it in a code.
Awesome tutorial! Thank you very much!
Please, you could share more related knowledge. It's really useful!
Also, an activity can be a listener. In this case:
MyActivity implements onClickListener {
btn1.setOnClickListener(this);
public void onClick (View v) {
//your code
}
}
For this kind of stuff, using some well known libraries from well known Android dev is a must.
https://github.com/JakeWharton/butterknife
Very powerfull, super easy to use, error prone and without any performance impact.
rafalniski said:
You can also add onClick property in XML and then handle it in a code.
Click to expand...
Click to collapse
SKAm69 said:
Also, an activity can be a listener. In this case:
MyActivity implements onClickListener {
btn1.setOnClickListener(this);
public void onClick (View v) {
//your code
}
}
Click to expand...
Click to collapse
will add them both, although I don't like this way
Mohamedrashad. Thanks a lot.
Sent from my P880 using Tapatalk
If you have multiple clickable objects then it's best to use just 1 onClickListener for all of them and use a switch on their ID's. This reduces resource usage as you only have 1 listener, not 5, 10 or however many you would have otherwise. It's not essential for this but it is a best practice if you want to streamline your code.
Mobile right now so I can't chuck up an example until tomorrow evening or so.
You dude had a great thread. Its helping me. Bravoo !!
Sent from my GT-I8190 using XDA Premium 4 mobile app
As @Jonny already pointed out: Use your class as a listener instead of creating a new (anonymous) inner class! Say you have a ListView, instead of doing this:
Code:
class MyFragment extends Fragment {
private void someMethod() {
((ListView) getView().findViewById(R.id.someListView)).setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Code...
}
});
}
}
you can do this:
Code:
class MyFragment extends ListFragment implements AdapterView.OnItemClickListener, View.OnClickListener {
private void someMethod() {
((ListView) getView().findViewById(R.id.someListView)).setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Code...
}
}
This may look stupid, but when you have many listeners, you can un-clutter it. In my opinion this is the best way. You can also add "this" class as listener for as many ui elements as you want(because all of them extend view, you can use one OnClickListener), then you only need to have a switch statement to distinguish between the views. And voila, you prevented cluttering the code with boilerplate stuff.
Example using code in an app I'm making - app for my school.
Code:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Some code here for view/layouts etc
websitebutton = (Button) view.findViewById(R.id.website_btn);
facebookbutton = (Button) view.findViewById(R.id.facebook_btn);
twitterbutton = (Button) view.findViewById(R.id.twitter_btn);
websitebutton.setOnClickListener(handler);
facebookbutton.setOnClickListener(handler);
twitterbutton.setOnClickListener(handler);
return view;
}
OnClickListener handler = new OnClickListener() {
public void onClick(View view) {
switch (view.getId()) {
case R.id.website_btn :
Uri website = Uri.parse("http://wirralgrammarboys.com/");
Intent websiteintent = new Intent(Intent.ACTION_VIEW, website);
startActivity(websiteintent);
break;
case R.id.facebook_btn :
Uri facebook = Uri.parse("https://www.facebook.com/WirralGSB");
Intent facebookintent = new Intent(Intent.ACTION_VIEW, facebook);
startActivity(facebookintent);
break;
case R.id.twitter_btn :
Uri twitter = Uri.parse("https://twitter.com/WGSB");
Intent twitterintent = new Intent(Intent.ACTION_VIEW, twitter);
startActivity(twitterintent);
break;
}
}
};
Jonny said:
Example using code in an app I'm making.
Code:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Some code here for view/layouts etc
websitebutton = (Button) view.findViewById(R.id.website_btn);
facebookbutton = (Button) view.findViewById(R.id.facebook_btn);
twitterbutton = (Button) view.findViewById(R.id.twitter_btn);
websitebutton.setOnClickListener(handler);
facebookbutton.setOnClickListener(handler);
twitterbutton.setOnClickListener(handler);
return view;
}
OnClickListener handler = new OnClickListener() {
public void onClick(View view) {
int id = view.getId();
if (id == R.id.website_btn) {
Uri website = Uri.parse("http://wirralgrammarboys.com/");
Intent websiteintent = new Intent(Intent.ACTION_VIEW, website);
startActivity(websiteintent);
} else if (id == R.id.facebook_btn) {
Uri facebook = Uri.parse("https://www.facebook.com/WirralGSB");
Intent facebookintent = new Intent(Intent.ACTION_VIEW, facebook);
startActivity(facebookintent);
} else if (id == R.id.twitter_btn) {
Uri twitter = Uri.parse("https://twitter.com/WGSB");
Intent twitterintent = new Intent(Intent.ACTION_VIEW, twitter);
startActivity(twitterintent);
}
}
};
Click to expand...
Click to collapse
i'm adding this to OP if you don't mind jonny
mohamedrashad said:
i'm adding this to OP if you don't mind jonny
Click to expand...
Click to collapse
That's fine - if I didn't want people to use/adapt/learn from the code then I wouldn't put it up, use it as you want :good:
Sent from my HTC One using Tapatalk
Keep it up
Great tutorials, keep em coming!
Hey what about starting a new activity with onClickListiner
Sent from my M3S_D7 using XDA Free mobile app
---------- Post added at 03:57 PM ---------- Previous post was at 03:49 PM ----------
Hey and do u mind sending a source codes.zip file
Sent from my M3S_D7 using XDA Free mobile app
Rebound.co said:
Hey what about starting a new activity with onClickListiner
Sent from my M3S_D7 using XDA Free mobile app
---------- Post added at 03:57 PM ---------- Previous post was at 03:49 PM ----------
Hey and do u mind sending a source codes.zip file
Sent from my M3S_D7 using XDA Free mobile app
Click to expand...
Click to collapse
in the onClick method just have this code:
Code:
startActivity(new Intent(this, YourActivity.class));
Hello all ,
i'm trying to make a timer that will kick the user out after let's say a few seconds , i used asynctask for it
it supposed to work on all activities including one that uses a camera on a diffrent thread ( using vuforia api and needs internet )
for some reason when i do it the camera doesn't work
(the same thing happens when there is no internet connection - might be related)
any ideas why ?
here's my asynctask
Code:
private class LoadSessionASYNC extends AsyncTask<String, Void, String> {
long time;
long interval;
public LoadSessionASYNC(long seshTime, long interval) {
time = seshTime;
interval=inter;
}
@Override
protected String doInBackground(String... urls) {
while (time >0)
{
publishProgress();
try {
Thread.sleep(interval);
} catch (InterruptedException e) {e.printStackTrace();}
time= time-interval;
}
return null;
}
@Override
protected void onPostExecute(String result) {
Intent startfresh = new Intent(getBaseContext(),WelcomActivity.class);
startActivity(startfresh);
}
@Override
protected void onProgressUpdate(Void... values) {
Toast.makeText(getApplicationContext(), "time to finish : "+time/1000+"seconds", Toast.LENGTH_SHORT).show();
super.onProgressUpdate(values);
}
}