editText.addTextChangedListener(new TextWatcher(){
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
//s:变化后的所有字符
Toast.makeText(getApplicationContext(), "变化:"+s, Toast.LENGTH_SHORT).show();
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
//s:......
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