Android :: Same Value When Converting From String To Float

Jul 8, 2010

I have a JSON Object with a latitude and longitude String on which I get the values doing this: String latitude = picInfo.getString("latitude"); String longitude = picInfo.getString("longitude");Then I convert them to floats like this: float latInt = Float.valueOf(latitude).floatValue(); float longInt = Float.valueOf(longitude).floatValue();And place them on a GeoPoint like this: GeoPoint X = new GeoPoint((int) (latInt*1E6),(int) (longInt*1E6) ); Debugging this values I can see JAVA approximates the values, is there anyway to keep them exactly the same?

Android :: same value when converting from String to Float


Android :: String From EditText To Float

Nov 19, 2010

I have an EditText for which will be using for a float number. So I'm trying to read the text from the EditText and put it into a float variable. But I seem to have a text to float problem.I've tried using Float.parseFloat(string) and just general casting, but nothing seem to do it. What can I do here? Also, is there a way to check for a valid float number before writing it to a variable?

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Android :: One Line Causing Lots Of Garbage Collection.String.format With Float?

Apr 13, 2009

In my ListView, there's one line of code in my ViewBinder that causes lots of garbage collection as I scroll through the list, about every two seconds...

D/dalvikvm(16312): GC freed 13171 objects / 659576 bytes in 162ms D/dalvikvm(16312): GC freed 13122 objects / 654128 bytes in 129ms D/dalvikvm(16312): GC freed 13134 objects / 655416 bytes in 142ms D/dalvikvm(16312): GC freed 13129 objects / 654840 bytes in 129ms D/dalvikvm(16312): GC freed 13149 objects / 655000 bytes in 110ms D/dalvikvm(16312): GC freed 13150 objects / 655720 bytes in 127ms D/dalvikvm(16312): GC freed 13075 objects / 652256 bytes in 111ms D/dalvikvm(16312): GC freed 13232 objects / 659040 bytes in 136ms D/dalvikvm(16312): GC freed 13106 objects / 653920 bytes in 110ms D/dalvikvm(16312): GC freed 13155 objects / 655152 bytes in 110ms

The offending code is here, which formats a price for each item in the list: String price = cursor.getString(columnIndex); final float pricef = Float.parseFloat(price); price = new StringBuffer("$").append(String.format("%. 2f",pricef)).toString(); ((TextView)view).setText(price);

If I comment out the line with String.format, the garbage collection goes away. So what's the "right" way to do this to avoid allocations? That database field holds an unformatted text string which I'm trying to format into proper currency format (example: format "1.5" to "$1.50")

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Android :: Converting Base64 String To Image

May 25, 2010

Is there any way that I can convert a base64 String to image in Android. I am receiving this base64 String in a xml from the server connected through socket.

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Android :: Converting Base64 Byte Array To String

Feb 16, 2009

Im trying to convert a byte array which is in Base64 format to String as below. Data was not assigned properly to the String. Do I need to pass the encoding type while creating the new String?

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Converting String To Charsequence?

Aug 17, 2010

I'm looking for a way to convert a string to a charsequence.

My code is:

Code:
public void randText(int r){

r++; //necessary increment

String rs = Integer.toString(r); //random string[code]....

The random int r is created outside the method. This method gives a random string, from my resource file. All of the strings have names q1,q2,q3,... There will be 100+ such strings.

This doesnt work at all. the setText(cs) line fails. Is there any way to convert string -> charsequence? Or to have it read as a resource file and not a string?

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Android :: Parsing Speed / Reading Vs Converting Input Stream To String?

Jul 23, 2009

I'm downloading text data from a web server, and getting an Input Stream. The data will be relatively large and delimited. I want to split this data by the deliminator and store each piece in the DB. Is it faster to read the Input Stream byte by byte to split the data and store each piece in the DB, or would it be faster to convert the Input Stream to a String and use an existing function such as Split?

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Android :: Subtracting A Float From Another

Jul 18, 2009

Double mChange = Double.parseDouble("7.1") - Double.parseDouble ("7.15"); Float mChange = Float.parseFloat("7.1") - Float.parseFloat("7.15"); mChange should be -0,05 in both cases, right? So why is mChangeD = -0.05000019 ???

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Android :: Any Tools To Convert Iphone Localized String File To String

Jun 29, 2010

I have the localized strings file that is used in the Iphone app that I work on to port to Android. Are there any tools that go through the file taken from the xcode project and build the xml needed to use the strings in android? This tool should be easy to build but I appreciate any pointers to already working tools.

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Android :: Java Datetime Values From String To Long To String

Oct 1, 2010

In Android, capturing date from datepicker and storing as string in sqlite. Sorting by date doesn't work because they're strings (unless I'm doing it wrong.I've googled this issue for ~5 days, and it looks like there should be a way to capture the date from the date picker, convert it to a Long, store it in sqlite as a Long, select and sort on the Long date value, then convert the Long back to a "mm/dd/yyyy" string for display. I've tried various combinations of parse statements, Date, FormatDate, etc. with no luck at all.On activity start, get today's date and display it in button which calls the datepicker.Capture new date from datepicker (if one is entered), save it as a long to sqlite.On opening an activity showing a listview of records, select from sqlite with orderby on date (Long), convert Long to "mm/dd/yyyy" string for display in ListView.

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Android :: Access The String Values Of String Resources Statically

May 5, 2009

If there's anyway way I to access the String values of String resources statically? e.g. a static equivalent of Context.getString(...)?

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Android :: Reference String In String Array Resource With Xml

Nov 12, 2010

I have preferences where you can enable/disable what items will show up on the menu. There are 17 items. I made a string array in values/arrays.xml with titles for each of these 17 items.

I have preferences.xml which has the layout for my preferences file, and I would like to reference a single item from the string array to use as the title.

In the Android developer reference, I see how I can reference a single string with XML, but now how I can reference a string from an array resource in XML.

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Android :: How To Convert Binary String Data Into String?

Aug 4, 2010

Can anybody give me some clue that how to convert binary string into a string(english). I have tried and googled so much but couldn't find an answer.

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Android :: Copy String From EditText Into String Variable

Jul 27, 2010

I have a class that creates a view to gather data via a function getView() that provides a view with an EditText.This class has also has variable answer.When the user chances the EditText I want to store the content of the EditText in answer.If I would use an onKeyListener I fear that the answer will probably get stored before the last letter is entered.Is there a good way to handle this in the getView() function via some other listener?

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Android :: Avoiding Float Operations In Game Design

Jun 8, 2010

I've read this in a few articles, that one should avoid floating point operations within the physics update of a game.

But how do you really achieve this? Surely all half decent games are going to involve this kind of maths?

Does it mean, convert all your variables to int, or use double instead, or simply just cut it out as much as possible?

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Android :: SeekBar Minimum And Continuous Float Value Attributes

Jun 9, 2010

I'm looking for a way to implement a minimum value in my SeekBar and also have the option to increment decimal numbers. For example, currently my SeekBar's minimum is set to 0, but I need it to start at the value 0.2. Also, I would like to have the functionality to be able to have the user select a number from 0.2 to 10.0 at a .1 precision so they can choose the numbers 5.6 or 7.1.

Here are the style attributes for my SeekBar:

CODE:..............

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Android :: Get User Input And Turning It Into Int , Double / Float?

Jun 19, 2010

Does anyone know how to get user input for floats,doubles,ints. I have tried looking everywhere on here and there hasn't been anything that could help me. All it has is EditText.GetText().toString() very frustrated that there isn't a tutorial for this.

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Android :: Storing Float Numbers As Strings In Database

Apr 27, 2010

So I have an app where I put arbitrary strings in a database and later extract them like this:

CODE:......................

This works fine in all cases except for when the string looks like a float number, for example "221.123123123". After saving it to the database I can extract the database to my computer and look inside it with a DB-viewer, and the saved number is correct. However, when using cursor.getString() the string "221.123" is returned. I cant for the life of me understand how I can prevent this. I guess I could do a cursor.getDouble() on every single string to see if this gives a better result, but that feels sooo ugly and inefficient.

I just made a small test program. This program prints "result: 123.123", when I would like it to print "result: 123.123123123"

CODE:.................

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Android :: How To Get String From Website / Show String On My App?

Nov 11, 2010

I have made a service which extends Service in android, and running in the background of my android app. What I want from this background service is to get the euro to dollar exchange rate from a finance website, I have my service ready, it can periodically run a function, I am now need to implement the function to get the euro-dollar rate from a website, there are many this kind of website, my question is, how can I get the currency rate as a string from the website, and pass the string to my service?

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Android :: Why Is My String To String Comparison Failing?

Aug 26, 2010

I have an Android app where I want to check to see if an app name that is installed matches a string passed to the function containing this code.Assuming you called checkInstalledApp('SetCPU'); and the app name on the phone is called the same thing it should return true. However, it never does. I logged the results and it should match up but it does not. Can anyone please enlighten me as to why this doesn't work?

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Android :: Finding Nth String In Delimited String

Nov 16, 2010

Does anyone have any idea how to find the n-th field (string) in a delimited string where the delimiters (separator) could be either a single char or several chars.and the syntax for user-defined function is FindNthField(string,separator,position)so position 3 would return three,The separator in use would actually be Chr(13).This has to run on Android and so should be efficient.

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Android :: Read A Float Value Form Resources And Accessed From Code?

Dec 3, 2009

Reading values like integers, strings, colors, etc. from resources (xml files) is easy and well defined at http://developer.android.com/guide/topics/resources/available-resourc.... But what about a float value, like 0.1 or 1.4? How can such float value be defined in resource file and accessed from code? Is it possible at all?

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Android :: Get String Array With Java Code From String Item List In Arrays.xml In Android ?

Oct 28, 2009

I want to get an array of strings reading from arrays.xml file we add in android values/ folder. Could any one kindly give a solution for this. Otherwise I will have to input each these entries in strings.xml and take them to java code using getResources()getString()

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Saving Values From (Float) ArrayList Into A Bundle

Dec 4, 2012

I'm writing a game using Surfaceview and have a question relating to saving Data into a Bundle.

Initially, I had an arraylist which stored the Y co-ordinates (in the form of Integers) of sprites that will move only up and down. Declared as:

Quote:

static ArrayList<Integer> ycoordinates = new ArrayList<Integer>();

I saved them to a Bundle using the following:

Quote:

myBundle.putIntegerArrayList("myycoordinates", ycoordinates);

And restored them using this:

Quote:

ycoordinates.addAll(savedState.getIntegerArrayList ("ycoordinates"));

This all worked perfectly. However, I've had to change the whole coordinates system so it's based on Delta time to allow my sprites to move at a uniform speed across different screens. This is, again, working perfectly.

However, as a result of this change, I now have to store these values as floats rather than integers.

So, I am declaring as:

Quote:

static ArrayList<Float> ycoordinates = new ArrayList<Float>();

So that's the background, now my question is, how do I store and restore values from a Float Arraylist? There doesn't seem to be a "putFloatArrayList" or "getFloatArrayList".

(I've used an Arraylist rather than an Array as the number of sprites needs to be dynamic).

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Android :: Dynamic String Using String.xml?

Sep 7, 2010

Is it possible to have a string value in string.xml of the sort " some string PLACEHOLDER1 some more string" so that the place holders can be assigned the value at run time.

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Motorola Droid :: Cloud Effect That Float By On Screen?

Aug 23, 2010

what are these clouds that float by on my screen every time I turn on the Droid? Did I miss something somewhere, is it a android thing or my weather program? How can I turn it off?

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Android :: Fast Way To Perform Addition Of Large Float Arrays In Android

Apr 4, 2010

I simply need to add floatArray1 to floatArray2 storing the result in floatArray2.. no third array. all arrays are one dimensional but are very large. probibly as large as the os will let me get away with. Max i would need is two float arrays with 40,000 floats each. but i could get away with 1/10th that i suppose minimum.Would love to do this in 1/30th or 1/60th of a second but that does not seem possible? Also if the code is JNI,NDK or OpenGL ES thats fine. does android have an assembly language or like machine code i could use somehow?

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Android :: Pass Float Array Between Activities In Android?

Nov 12, 2010

class1.java has creates a float[] array that is need to have in class2.java. How do you do this? The float[] is points. Here is an example code:

class1.java
import android.app.Activity;
import android.content.Context;
import android.app.ListActivity;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Typeface;......................

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Android : Power String - Have Power String Dock Displayed

Aug 19, 2010

I have installed Power Strip, and the very first time I was asked to use my preferred home screen, I selected the existing one (using a GS).

What I want to do is to have Power String dock displayed if I do a double click on the home key. I played with the settings but it seems that it doesn't work. Any hint?

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Android :: String-array - Resource Into A String Array

Mar 31, 2009

I just want to read <string-array> resource elements into a String array. I don't want to make a view or anything and mess with adapters - just want to transfer the elements. Is there a built in class for this? Or do I need to treat the resource file as a regular file?

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