Android(安卓)TabLayout设置选中状态标题字体大小,粗细

-------------------布局文件-----------------

<android.support.design.widget.TabLayout    android:layout_marginLeft="17dp"    android:layout_marginRight="16.8dp"    android:layout_width="match_parent"    android:layout_height="40dp"    app:tabGravity="fill"    app:tabIndicatorColor="@color/button_bule"    app:tabMode="scrollable"    app:tabSelectedTextColor="#333333"    app:tabTextAppearance="@style/TabLayoutTextSize"    app:tabTextColor="#2A2A2A"    android:id="@+id/mytab"    >android.support.design.widget.TabLayout>

<style name="TabLayoutTextSize">    <item name="android:textSize">16spitem>style><style name="TabLayoutTextStyle">    <item name="android:textStyle">bolditem>style>

-------------------代码展示-------------------

myTab = (TabLayout) view.findViewById(R.id.mytab);

//默认字体大小粗细

TextView title = (TextView)(((LinearLayout) ((LinearLayout) myTab.getChildAt(0)).getChildAt(0)).getChildAt(1));title.setTextSize(18);title.setTextAppearance(getActivity(), R.style.TabLayoutTextStyle);myTab.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {    @Override    public void onTabSelected(TabLayout.Tab tab) {

         vp.setCurrentItem(tab.getPosition());        TextView title = (TextView)(((LinearLayout) ((LinearLayout) myTab.getChildAt(0)).getChildAt(tab.getPosition())).getChildAt(1));        title.setTextSize(18);        title.setTextAppearance(getActivity(), R.style.TabLayoutTextStyle);    }    @Override    public void onTabUnselected(TabLayout.Tab tab) {

        vp.setCurrentItem(tab.getPosition());        TextView title = (TextView)(((LinearLayout) ((LinearLayout) myTab.getChildAt(0)).getChildAt(tab.getPosition())).getChildAt(1));        title.setTextSize(16);        title.setTextAppearance(getActivity(),Typeface.NORMAL);    }    @Override    public void onTabReselected(TabLayout.Tab tab) {    }});

注意:

调用setOnTabSelectedListener点击菜单时没有切换fragment，不监听则正常。查看源码发现OnTabSelectedListener中的onTabSelected方法有个默认实现：

@Overridepublic void onTabSelected(TabLayout.Tab tab) {     vp.setCurrentItem(tab.getPosition());}

所以自己监听OnTabSelectedListener事件时需要在onTabSelected方法中调用ViewPager的setCurrentItem方法。

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