Converting a string to an integer on Android

Question

How do I convert a string into an integer   I have a textbox I have the user enter a number into   EditText et    EditText  findViewById R id entry1   String hello   et getText   toString      And the value is assigned to the string hello   I want to convert it to a integer so I can get the number they typed  it will be used later on in code   Is there a way to get the EditText to a integer  That would skip the middle man  If not  string to integer will be just fine

User · Answer

You should covert String to float  It is working   float result   0   if  TextUtils isEmpty et getText   toString        return     result   Float parseFloat et getText   toString      tv setText result

User · Answer

The much simpler method is to use the decode method of Integer so for example   int helloInt   Integer decode hello

User · Answer

There are five ways to convert The First Way     String str     123    int i   Integer parse str    output   123   The second way    String str    hello123world   int i   Integer parse str replaceAll     D             output   123   The Third Way    String str 123   int i   new Integer str   output  123    The Fourth Way     String str 123   int i   Integer valueOf Str   output  123    The Fifth Way    String str 123   int i   Integer decode str   output  123    There could be other ways But that s what I remember now

User · Answer

Use regular expression   int i Integer parseInt  hello123  replaceAll     D         int j Integer parseInt  123hello  replaceAll     D         int k Integer parseInt  1h2el3lo  replaceAll     D           output   i 123  j 123  k 123

User · Answer

Best way to convert your string into int is        EditText et    EditText  findViewById R id entry1    String hello   et getText   toString     int converted Integer parseInt hello

User · Answer

See the Integer class and the static parseInt   method   http   developer android com reference java lang Integer html  Integer parseInt et getText   toString       You will need to catch NumberFormatException though in case of problems whilst parsing  so   int myNum   0   try       myNum   Integer parseInt et getText   toString       catch NumberFormatException nfe       System out println  Could not parse     nfe

User · Answer

You can also do it one line   int hello   Integer parseInt   Button findViewById R id button1   getText   toString   replaceAll     D            Reading from order of execution    grab the view using findViewById R id button1  use   Button         to cast the View as a Button Call   GetText    to get the text entry from Button Call  toString   to convert the Character Varying to a String Call  ReplaceAll   with     D   to replace all Non Digit Characters with     nothing  Call Integer parseInt   grab  and return an integer out of the Digit-only string

User · Answer

Try this code it s really working   int number   0  try       number   Integer parseInt YourEditTextName getText   toString       catch NumberFormatException e       System out println  parse value is not valid       e

User · Answer

Kotlin There are available Extension methods to parse them into other primitive types    quot 10 quot  toInt    quot 10 quot  toLong    quot true quot  toBoolean    quot 10 0 quot  toFloat    quot 10 0 quot  toDouble    quot 10 quot  toByte    quot 10 quot  toShort    Java String num    quot 10 quot   Integer parseInt num

User · Answer

Use regular expression   String s  your1string2contain3with4number   int i Integer parseInt s replaceAll     D            output  i 1234   If you need first number combination then you should try below code   String s  abc123xyz456   int i NumberFormat getInstance   parse s  intValue      output  i 123

User · Answer

You can use the following to parse a string to an integer   int value Integer parseInt textView getText   toString        1  input  12 then it will work   because textview has taken this 12 number as  12  string    2  input   abdul  then it will throw an exception that is NumberFormatException       So to solve this we need to use try catch as I have mention below     int tax amount 20    EditText edit  EditText findViewById R id editText1        try                   int value Integer parseInt edit getText   toString             value value tax amount          edit setText String valueOf value      to convert integer to string           catch NumberFormatException ee          Log e ee toString                You may also want to refer to the following link for more information  http   developer android com reference java lang Integer html

User · Answer

int in   Integer valueOf et getText   toString       or int in2   new Integer et getText   toString

User · Answer

Use regular expression is best  way to doing this as already mentioned by ashish sahu  public int getInt String s   return Integer parseInt s replaceAll     D

[java] Converting a string to an integer on Android

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