Password Generator Error (Android) -

i dont know why cant generate custom password.

public void generatepass(view view) {      edittext textfield = (edittext)findviewbyid(r.id.digitsfield);     int digitsnum = integer.parseint(textfield.gettext().tostring());     if (digitsnum != 1){         random pass = new random();         int num1 = pass.nextint(10);         textview passtext = (textview) findviewbyid(r.id.passtext);         passtext.settext(num1);     } } 

i created text field(edittext) in can write how many digits want password be, tried putting

    edittext textfield = (edittext)findviewbyid(r.id.digitsfield);     string digits = textfield.gettext().tostring();     int digitsnum = integer.parseint(num); 

and changing if(digitsnum == 1)... when write digits(i code 1) tried writing 1 crash or stop working.

try , modify needs:

java code (add in oncreate method):

final textview passtext = (textview) findviewbyid(r.id.passtext); final edittext digitsfield = (edittext) findviewbyid(r.id.digitsfield); button generatepassword = (button) findviewbyid(r.id.generatepassword);  generatepassword.setonclicklistener(new view.onclicklistener() {     @override     public void onclick(view v) {          int passwordlength = integer.parseint(digitsfield.gettext().tostring());         string allowedchars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789";         char[] allowedcharsarray = allowedchars.tochararray();         char[] chars = new char[passwordlength];         random random = new random();          (int = 0; < passwordlength; i++) {             chars[i] = allowedcharsarray[random.nextint(allowedchars.length())];         }          passtext.settext(chars, 0, passwordlength);     } }); 

xml layout (edit current layout):

<linearlayout     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:gravity="center"     android:orientation="vertical"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     android:paddingbottom="@dimen/activity_vertical_margin">      <textview         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:textappearance="?android:attr/textappearancelarge"         android:text="password"         android:layout_gravity="center"         android:id="@+id/passtext" />      <edittext         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:inputtype="number"         android:layout_margintop="20dp"         android:layout_marginbottom="20dp"         android:id="@+id/digitsfield" />      <button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="generate password"         android:layout_gravity="center"         android:id="@+id/generatepassword" />  </linearlayout>