Android dynamically limits the types of notebooks and keyboards input by EditText, and monitors the input.

// Set the maximum input length
Inputfilter [] Filters = new inputfilter [1];
Filters [0] = new inputfilter. lengthfilter (8); // limit the maximum input length
Etunit. setfilters (filters );
// Enter only numbers
Etunit. setkeylistener (New numberkeylistener (){
Protected char [] getacceptedchars (){
Char [] numberchars = {'1', '2', '3', '4', '5', '6', '7', '8 ',
'9', '0 '};
Return numberchars;
}

Public int getinputtype (){
Return 3;
}

});

Etunit. addtextchangedlistener (New textwatch ());

// Monitor the digit change event in the Ampersand input box
Class textwatch implements textwatcher {

Public void aftertextchanged (editable s ){

}

Public void beforetextchanged (charsequence S, int start, int count,
Int after ){

}

Public void ontextchanged (charsequence S, int start, int before,
Int count ){
Updateedittexts ();
}
}