在Android中，可以使用TextView来显示文本。如果需要在TextView中添加下划线，可以使用以下两种方法：
- 使用HTML标记
可以使用HTML标记来添加下划线。以下是示例代码：
```xml
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is an underlined text"
android:textColor="@android:color/black"
android:textSize="18sp"
android:textStyle="bold"
android:textAlignment="center"
android:layout_gravity="center"
android:padding="10dp"
android:background="@android:color/white"
android:layout_margin="10dp"
android:layout_centerInParent="true"
android:autoLink="web"
android:linksClickable="true"
android:textIsSelectable="true"
android:lineSpacingExtra="8dp"
android:textColorLink="@color/colorAccent"
android:textColorHighlight="@color/colorPrimaryDark"
android:textColorHint="@color/colorPrimary"
android:textColorCursor="@color/colorPrimary"
android:fontFamily="@font/roboto"
android:textAppearance="@style/TextAppearance.AppCompat"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android:textIsSelectable="true"
android
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