Android : Need To Calculate Date Difference

Aug 13, 2010

How to calculate the date difference in Android?

Android : Need to calculate date difference


Android :: Calculate Difference Between Two Times And Display A Relative Result?

Aug 13, 2010

I have a DB sorted by date, and in my output, I would like to display the elapsed time between rows.. like this..

| Entry #1 on 08/10/2010 08:34 AM

| Entry #2 on 08/10/2010 09:45 AM
| 1 hour 11 minutes since previous entry

| Entry #3 on 08/11/2010 06:57 AM
| 1 day 3 hours 12 minutes since previous entry

| Entry #4 on 08/11/2010 08:34 PM
| 13 hours 37 hours since previous entry

| Entry #5 on 09/11/2011 08:48 PM
| 1 year 1 month 8 minutes since previous entry

I've looked at getRelativeTimeSpanString() but 1) it calculates from now & 2) it appends a prefix/suffix.

Is there an easier way to do this, other than creating a custom datediff method and chopping all of that together with conditions myself?

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Android :: Calendar Control - After Selecting Date Can Also Be Able To Event On That Selected Date

Nov 17, 2010

I have referred the article (at http://www.developer.com/article.php/3850276 ) for implementing the native calendar control, but i would like to display calendar also on the screen and also User can able to select date, and after selecting date user can also be able to event on that selected date.

So is there any way to display calendar (month view) in Android ?

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Android :: How To Convert Date Saved In String Format To Date Format

Jun 29, 2010

I am trying to convert string to date, and then I ma saving this date in a file , which saves in the following format:Mon Jun 21 16:31:24 Asia/Karachi 2010.and then when later I read this date from file as a String, I again want to save it to a Date,

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Android :: How To Calculate Beats Per Minute?

Sep 25, 2010

I would like to record from the device microphone and then be able to calculate the beats per second of the recorded audio, is it possible and how? is there any open source project I can look?

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Android :: Need To Calculate Rotation Vector

May 18, 2010

I need to calculate a rotation vector out of the data i get from Sensor.TYPE_ORIENTATION. The sensor data is defined like this: the values have to be recalculated to become a correct 3d position: values[0]: Azimuth, angle between the magnetic north direction and the Y axis, around the Z axis (0 to 359). 0=North, 90=East, 180=South, 270=West values[1]: Pitch, rotation around X axis (-180 to 180), with positive values when the z-axis moves toward the y-axis. values[2]: Roll, rotation around Y axis (-90 to 90), with positive values when the x-axis moves away from the z-axis need all three values like the Z axis value (from 0 to 360 degree). I tried a lot but cant figure out how to do this :/ So i bet there is a simple solution how to recall the values of sensor.TYPE_ORIENTATION to make them a 3d rotation vector, but i just dont know how to do it. If you know the answer please tell me. Code...

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Android :: Calculate CPUTime Per Process

Nov 16, 2010

I want to calculate CPUTime per process for Android devices.

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Android :: Calculate Space Does A TextView Take?

Jul 21, 2010

How much space does a TextView take?

When I declare a TextView, is it possible to calculate how much space (height and width) it is going to take when actually rendered on the phone?

I have noticed that based on the different screen sizes of phones (or density), the TextView is rendered accordingly. I want to be able to calculate the exact height and width rendered.

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Android : Can I Calculate Daily Calories V1.0

Jan 3, 2010

Calculate with 4 easy steps the daily calories you need. The application is in English, Spanish, French and Italian.

Calculate daily calories v1.0 Application for Android | Health AND IT'S FREE

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Android : Want To Calculate Most Used Apps-droid

Jan 9, 2010

So I'm developing an app for android, and before I get too much into it, I want to conceptually get my arms around what I am trying to do. Is it very difficult to calculate or track the most frequently accessed apps? Any ideas or insights about how I might go about getting this done would be greatly appreciated! I'm used to iphone development, and am quite new to the android platform.

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Android : Calculate An Appropriate Field Width?

Sep 18, 2010

In my app I am displaying a table where the individual cells are editable text fields (i.e. EditText objects). I am currently struggling calculating appropriate widths for these.

If I set the width to be as many "Ems" as the displayed text has characters, my fields are much to wide by about a factor of 2 and the table looks ugly and wastes lots of precious screen space. Setting the width in "Ems" is essentially like assuming the worst case, i.e. the width of a string under the assumption that it contains only the broadest characters in a font, usually 'M' (hence the name of the method), 'm', 'W', or '_'). But on average strings contain narrower characters and so most of these fields are half empty and much too wide for their actual content. I am thus desperately seeking a way to calculate a better fitting width, not that worst case width.

The "normal" way to do this in Java (in AWT or Swing at least) is to asks a widget's current Font (actually a Font's FontMetrics), to calculate and return the width that will be necessary to display a given string in pixels. But how does one obtain a TextView's Font? I haven't found any method to obtain a (Text)View's font and/or calculate a more appropriate width given the actual content of a cell's text string. How does one do that in Android?

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Android : Way To Calculate SpannableString Witdh

Nov 22, 2010

I'm building a text at runtime that will be put into a TextView. This text has composed with different size fonts. I must calculate the width in pixels of this text. I have tried to use Paint.measureText, but it does not consider the different font sizes.
How can I calculate the real width?

this is an example: code..

In this example, if I set the relative size to "2f " or "3f"(for example), the total size that returns "MeasureText" is the same.

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Android :: Can Calculate Current Altitude - Placed Mouse On Map

Dec 23, 2008

Need a app that can do that... google earth for the pc gave good elevation based on where u placed your mouse on the map.... the map function unfortunately doesn't or if so... don't know how to access it

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Android :: Calculate Distance Using Latitude And Longitude

Aug 9, 2009

I want to know that how can i calculate distance between two point using their latitude and longitude in android ?

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Android :: Calculate Distance Between To City - Dynamically

Sep 16, 2010

I want to calculate the distance between 2 city, whatever user mention.

Example - Default City - 1st City - New York or New Delhi, London Seoul anything User Put - 2nd City - California

Need - to calculate distance between California to New York or London

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Android :: Calculate Distance Between Two GeoPoints With MapView

Jun 20, 2010

I want to know the distance of two points or the width and height distance of my current mapview in km unit. Is there any android map api to do that?

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Android :: Using Accelerometer To Calculate Distance - Eleveation

Jun 28, 2010

Can it be determined that where a person is i.e is he walking ? is he in elevator ? or is he climbing up the stairs ? using android's accelerometer or is there any other way to calculate such in android ?

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Android :: Need Calculate Distance / Travel Time App

Dec 23, 2009

Is there Android application that can be used to calculate travel time and distance?

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Android :: How Does AdMob Calculate How Much To Pay Developers Per Click?

Aug 14, 2010

I just integrated AdMob into my app. I noticed that in South Korea, there were 24 clicks, but that I only got 7 cents off of those clicks. In Malaysia, there was one click that generated 11 cents, and in Japan there were 2 clicks that generated 0 cents Does anyone know how this works? Also, does AdMob or Google AdSense generate more money?

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Android :: How To Calculate Speed With Which Mobile Is Moving?

Jun 9, 2010

How to calculate the speed with which android mobile is moving, i.e user with mobile in his pocket/hand. Basically I would like to invoke some activity based on the user's speed, how will I calculate? based on what parameters in mobile.

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Android :: Calculate Days Since A Record Entry?

Aug 4, 2010

I have a database with a field for a stored date. I would like to be able calculate the days between the recorded date and today.

I ended up using:

mDb.execSQL("UPDATE "+DATABASE_PLANTS_TABLE+" SET "+ KEY_PLANT_DAYS+
" = (SELECT julianday('now') - julianday("+KEY_DATE+") FROM"+ DATABASE_PLANTS_TABLE+")");

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Android :: Calculate Hash Value Of All Folders In Phone?

Jul 7, 2010

I want to calculate the hash value of the all the folders in a particular directory. I am able to do it in a java application.

Any idea how to do it in Android?

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Android :: Calculate Text Lenght Without Actually Printing It?

Dec 7, 2009

Given a style (font, size, bold/italic, etc), is there a way to calculate how many (horizontal) pixels a text will take when printed on a Canvas, without actually printing it?

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Android : Make Calculate Button Redundant?

Nov 13, 2010

I have a simple Android app that does some math on 2 numbers that the user inputs and returns the result.
Currently I have a 'calculate' button that needs to be pressed to do the math and return the value.

How can I get rid of this button and just get the app to run the math after the uses has changed either one of the 2 numbers?

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Android :: Drawpostext Calculate Character Height Draws?

Mar 15, 2010

drawPosText(char[] text, int index, int count, float[] pos, Paint paint) Draw the text in the array, with each character's origin specified by the pos array. Does anyone know where exactly does drawPosText consider the "origin" to be, since you are specifying "origin" as coordinate pairs; i.e., is it bottom-left of character, center, what? Also how does drawPosText calculate character height when it draws?

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Android :: Calculate User's Moving Speed By Phone?

Jul 5, 2009

I want to develope an application to calculate the user's moving speed by an Android phone like G1(Is it feasible on hardware?). But I don't know whether similar software exists already. If anyone know such similar application please tell me, and it will help me a lot in my design.

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Android :: How To Calculate Angle Between Line Defined By Two Points

Apr 20, 2010

I'm currently developing a simple 2D game for Android. I have a stationary object that's situated in the center of the screen and I'm trying to get that object to rotate and point to the area on the screen that the user touches. I have the constant coordinates that represent the center of the screen and I can get the coordinates of the point that the user taps on. I'm using the formula outlined in this forum: How to get angle between two points?

-It says as follows "If you want the the angle between the line defined by these two points and the horizontal axis:
double angle = atan2(y2 - y1, x2 - x1) * 180 / PI;".
-I implemented this, but I think the fact the I'm working in screen coordinates is causing a miscalculation, since the Y-coordinate is reversed. I'm not sure if this is the right way to go about it, any other thoughts or suggestions are appreciated.

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Android : Way To Determine / Calculate Byte Size Of A Bitmap?

Mar 9, 2010

How can I determine/calculate the byte size of a bitmap (after decoding with BitmapFactory)? I need to know how much memory space it occupies, because I'm doing memory caching/management in my app. (file size is not enough, since these are jpg/png files).

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Android : Calculate Temperature Of Phone Based SensorManager?

Nov 27, 2009

I want to determine temperature of my phone based SensorManager?

In Sensor we have a SENOR_TEMPERATURE! How i can use it?

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Android : Need To Calculate Time Elapsed - While Developing Game

Jun 4, 2010

So I've been struggling with this and I am not sure why because it should be simple, but for some reason I just can not get my head around it !!

I am developing a game and when the user saves their game, I write out the last time I checked their stats using System.currentTimeMillis(). Then when they load in the game I want to see how many total seconds have elapsed since it was last saved. Naturally I thought of getting System.currentTimeMillis() and then deducting my saved value and then converting that into seconds using this :=

long timePassed = System.currentTimeMillis() - lastCheck; int seconds = (int) ((timePassed / 1000) % 60);

But on each load the seconds keep altering, but not within the right bounds. For example on one load it comes as 59 seconds, then it showed 23 seconds etc. Obviously my algorithm is slightly wonky but I can't work out why.

Could some one please elaborate where I am going?

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