Basic things that I always forget

EditText-->String  First

e.g
EditText et=(EditText) findViewById(R.id.bla);
String valueOfEt=et.getText().toString();

String -->Double or Integer
 e.g
;Double
String x="0.89";
Double v=Double.parseDouble(x);

;Integer

String x="0.89";
Integer z=Double.parseInt(x);



vice versa