Plus, the Float.parseFloat(String) method handles negative numbers and even scientific notation, such as "2.0E-1".
-- Don www.TheGadgetWorks.com On Sun, Jun 20, 2010 at 7:39 AM, <android-beginners+nore...@googlegroups.com<android-beginners%2bnore...@googlegroups.com> > wrote: > Topic: StringToFloat > code<http://groups.google.com/group/android-beginners/t/318207b2a16e89c7> > > kille6525 <yoda2...@gmail.com> Jun 19 09:02AM -0700 > ^<#12955cd01de73397_digest_top> > > Ok since the EditText.getText. will only allow you to get a string i > made a small program to get the string and convert it to a float. It > was a pain to do. You could change the return to an int or double but > i made this for floats... > Here is the horrible code... > > > public float StringToFloat(String text) > { > //Used for the for loops > int i = 0; > //The number your go to return > float number = 0; > //Used to specify if your before the decimal or after > int numtodec = 1; > //Size of the int. 123.6 sizeofint = 3 > int sizeofint = -1; > //Gets the length of the String > int size = text.length(); > //Sets an array of characters equ to the string > char string[] = text.toCharArray(); > //Gets the size of the sizeofint and sizeofdec > for(i = 0; i < size; ++i) > { > if(string[i] == '.') > { > numtodec = 0; > continue; > } > if(numtodec == 1) > ++sizeofint; > } > //resets the num to dec > numtodec = 1; > //Stores the number > for(i = 0; i < size; ++i) > { > if(string[i] == '.') > { > numtodec = 0; > continue; > } > int hold = string[i] - 48; > double hold2; > if(numtodec == 1) > hold2 = java.lang.Math.pow(10.0,(double)(sizeofint - i)); > else > hold2 = java.lang.Math.pow(10.0,(double)(sizeofint+1 - i)); > number += hold*hold2; > } > return number; > } > > > > > Mikey <frak....@gmail.com> Jun 19 05:05PM +0100 > ^<#12955cd01de73397_digest_top> > > What was wrong with this: > > http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Float.html > > > On 19 Jun 2010, at 17:02, kille6525 wrote: > > > > > > kille6525 <yoda2...@gmail.com> Jun 19 10:31AM -0700 > ^<#12955cd01de73397_digest_top> > > There is no string to float function to do it for you. Now i dont have > it to where it will check for a negative or positive sign but in my > app there is none for now... > > > > > > kille6525 <yoda2...@gmail.com> Jun 19 10:38AM -0700 > ^<#12955cd01de73397_digest_top> > > Oh yah i just tried the valueOf(String string) and it made my program > hate the two buttons one button caculates my two inputs and the other > finishes but when i added that in it didnt like any of them. Weird > > > > > > Raymond Rodgers <raym...@badlucksoft.com> Jun 19 05:12PM -0400 > ^<#12955cd01de73397_digest_top> > > I think he was specifically referring to the parseFloat() function... > This is a direct link to a slightly different version of the api he > referenced... > > > http://java.sun.com/javase/7/docs/api/java/lang/Float.html#parseFloat(java.lang.String<http://java.sun.com/javase/7/docs/api/java/lang/Float.html#parseFloat%28java.lang.String> > ) > > Raymond > On 06/19/2010 01:38 PM, kille6525 wrote: > > -- > Raymond Rodgers > http://www.badlucksoft.com/ > > > > > Mikey <frak....@gmail.com> Jun 19 10:14PM +0100 > ^<#12955cd01de73397_digest_top> > > That or the constructor that takes a string - but anything over making > your own parser... > > On 19 Jun 2010, at 22:12, Raymond Rodgers wrote: > > > -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
