how to get text from textview

Question

if I have set text in textview in such way  which is not problem     tv setText      ANS i      this simply getting from this way        String a   tv getText   toString         int A   Integer parseInt a     But in case of setting value in textView    tv1 setText        X i      n                Y i      which is like this                5               9   I have problem   this value how to get

User · Answer

You have to do the following   a a replace   n        a a trim    String b   a split       int k Integer ValueOf b 0    int l Integer ValueOf b 1    int sum k l

User · Answer

If it is the sum of all the numbers you want  I made a little snippet for you that can handle both   and - using a regex  I left some print-calls in there to help visualise what happens        final String string          5     n     -          9   n          5    Or get the value from a TextView     final Pattern pattern   Pattern compile   -       d          Matcher matcher   pattern matcher string        System out print string       System out print   n        int sum   0       while  matcher find              System out print matcher group 1            System out print matcher group 2            System out print   n            sum    Integer parseInt matcher group 1  matcher group 2              System out print   nSum    sum     This code prints the following     5 - 9   5 5 -9 5  Sum  1   Edit  sorry if I misunderstood your question  it was a little bit unclear what you wanted to do  I assumed you wanted to get the sum of the numbers as an integer rather than a string   Edit2  to get the numbers separate from each other  do something like this instead       final String string          5     n     -          9   n          5    Or get the value from a TextView     final Pattern pattern   Pattern compile   -       d          Matcher matcher   pattern matcher string       ArrayList lt Integer gt  numbers   new ArrayList lt Integer gt          while  matcher find              numbers add Integer parseInt matcher group 1  matcher group 2

User · Answer

split with the   sign like this way  String a   tv getText   toString    String aa    if a contains           aa   a split         now convert the array  Integer parseInt aa 0       and so on

User · Answer

Try Like this   tv1 setText        Integer toString X i       n                Integer toString Y i

User · Answer

I haven t tested this - but it should give you a general idea of the direction you need to take   For this to work  I m going to assume a few things about the text of the TextView    The TextView consists of lines delimited with   n   The first line will not include an operator     -    or     After the first line there can be a variable number of lines in the TextView which will all include one operator and one number  An operator will allways be the first Char of a line    First we get the text   String input   tv1 getText   toString      Then we split it up for each line   String   lines   input split    n       Now we need to calculate the total value   int total   Integer parseInt  lines 0  trim        We know this is a number   for  int i   1  i  lt  lines length    i          total   calculate  lines i  trim    total        The method calculate should look like this  assuming that we know the first Char of a line is the operator   private int calculate  String input  int total        switch  input charAt  0           case               return total   Integer parseInt  input substring  1  input length            case  -            return total - Integer parseInt  input substring  1  input length                         case               return total   Integer parseInt  input substring  1  input length                         case               return total   Integer parseInt  input substring  1  input length            EDIT  So the above as stated in the comment below does  left-to-right  calculation  ignoring the normal order     and   before   and -    The following does the calculation the right way   String input   tv1 getText   toString    input   input replace    n         input   input replace             int total   getValue  input      The method getValue is a recursive method and it should look like this   private int getValue  String line       int value   0     if  line contains                String   lines   line split               value    getValue  lines 0          for  int i   1  i  lt  lines length  i           value    getValue  lines i          return value         if  line contains   -            String   lines   line split     -         value    getValue  lines 0          for  int i   1  i  lt  lines length  i           value -  getValue  lines i          return value         if  line contains                String   lines   line split               value    getValue  lines 0          for  int i   1  i  lt  lines length  i           value    getValue  lines i          return value         if  line contains                String   lines   line split               value    getValue  lines 0          for  int i   1  i  lt  lines length  i           value    getValue  lines i          return value         return Integer parseInt  line        Special cases that the recursive method does not handle    If the first number is negative e g  -3 5 8  Double operators e g  3 -6 or 5 -4    Also the fact the we re using Integers might give some  odd  results in some cases as e g  5 3   1

[android] how to get text from textview

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