Android常见控件— — —TextView

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"    >

    <TextView        android:id="@+id/text_view"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="第一个textview"        android:textSize="24sp"        android:textColor="#ff0000"        android:gravity="center"        />

</RelativeLayout>