EditText 文字改变的情况的监听器

、给EditText追加ChangedListener

EditText editText= (EditText)findViewById(R.id.edittext);

editText.addTextChangedListener(watcher);

2、描述监听

private TextWatcherwatcher = newTextWatcher() {

@Override

public voidonTextChanged(CharSequences, int start, int before, int count) {

// TODO Auto-generated method stub

}

@Override

public voidbeforeTextChanged(CharSequences, int start, int count,

int after){

// TODO Auto-generated method stub

}

@Override

public voidafterTextChanged(Editables) {

// TODO Auto-generated method stub

}

};