问题
I have a TabLayout, where I want the tabs to be displayed in the center of the screen. Below is the XML for my TabLayout.
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@color/white"
app:tabGravity="center"
app:tabIndicatorColor="@color/about_tab_selected"
app:tabIndicatorHeight="4dp"
app:tabMode="scrollable"
app:tabPaddingEnd="20dp"
app:tabPaddingStart="20dp"
app:tabSelectedTextColor="@color/about_tab_selected"
app:tabTextAppearance="@style/UGTabTextAppearance"
app:tabTextColor="@color/about_tab_unselected" />
However, my Tabs are still displayed to the left, and I'm unable to center them in the Activity.
What I'm getting is this:
What I really want is:
Can somebody please tell me what I'm doing wrong here? If you need additional information regarding the rest of the XML, please let me know.
回答1:
Tab gravity only effects MODE_FIXED.
One possible solution is to set your layout_width to wrap_content and layout_gravity to center_horizontal
回答2:
Ok, so the problem was with layout_width="match_parent"
When I changed that to layout_width="wrap_content", it solved my problem.
The final XML is:
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@color/white"
app:tabGravity="center"
app:tabIndicatorColor="@color/about_tab_selected"
app:tabIndicatorHeight="4dp"
app:tabMode="scrollable"
app:tabPaddingEnd="20dp"
app:tabPaddingStart="20dp"
app:tabSelectedTextColor="@color/about_tab_selected"
app:tabTextAppearance="@style/UGTabTextAppearance"
app:tabTextColor="@color/about_tab_unselected" />
来源：https://stackoverflow.com/questions/43588653/tablayout-gravity-center-is-not-working