Amount Input Box

import android.text.inputfilter;import android.text.spanned;import java.util.regex.matcher; import java.util.regex.pattern;/*** joy on 2015/12/17.**  Amount Input Format */public class  EditInputFilter implements InputFilter {/***  Maximum number, we take int type maximum value */public static  final int MAX_VALUE = 2147483647;/***  number of digits after the decimal point */public static final  int PONTINT_LENGTH = 2; Pattern p;public editinputfilter () {p = pattern.compile ("[0-9]*");    // }/***  source     the new input string except for the number *  start     The new input string starts subscript, typically 0*  end     the new input string end subscript, usually the source length -1*  dest      before entering the contents of the text box *  dstart     original content starting coordinates, generally 0*  dend      original content endpoint coordinates, typically dest length -1*/@Overridepublic  charsequence filter (charsequence src,&nBsp;int start, int end,spanned dest, int dstart, int dend)  { String oldtext =  dest.tostring (); System.out.println (OldText);//Verify the deletion of keys such as if  ("". Equals (Src.tostring ()))  {return null;} Verify non-numeric or decimal point matcher m = p.matcher (SRC); if (Oldtext.contains (".")) {//If there is already a decimal point, you can only enter the number if (!m.matches ()) {return null;}} else{//You can enter a decimal point and a number if the decimal point is not entered (!m.matches ()  && !src.equals (".")  ) {return null;}} Verify the size of the input amount if (!src.tostring (). Equals ("")) {double dold = double.parsedouble (oldtext+src.tostring ()); if (Dold > max_value) {return dest.subsequence (dstart, dend);} Else if (Dold == max_value) {if (src.tostring (). Equals (".")) {return dest.subsequence (dstart, dend);}}} Verify that the decimal digit precision is correct if (Oldtext.contains (".")) {Int index = oldtext.indexof ("."); int len = dend – index;//decimal place can only be 2-bit if (len > pontint_leNgth) {charsequence newtext = dest.subsequence (dstart, dend); return newText;}} Return dest.subsequence (Dstart, dend)  +src.tostring ();}}

Inputfilter[] Filters = {new Editinputfilter ()};

Edit_takeout_money.setfilters (filters);

Amount Input Box