tringuyen1123

# hasBrain_research
#XML declare
<EditText
     android:id="@+id/plain_text_input"
     android:layout_height="wrap_content"
     android:layout_width="match_parent"
     android:inputType="text"/>
# Java code
Field1 = (EditText)findViewById(R.id.field1);
Field1.addTextChangedListener(new TextWatcher() {