public static void reflex(final TabLayout tabLayout){

        tabLayout.post(() -> {

            try {

                //拿到tabLayout的slidingTabIndicator属性

                Field tabIndicator = tabLayout.getClass().getDeclaredField("slidingTabIndicator");

                //API28以下为mTabStrip

//              Field tabIndicator = tabLayout.getClass().getDeclaredField("mTabStrip");

                tabIndicator.setAccessible(true);

                LinearLayout mTabStrip = (LinearLayout) tabIndicator.get(tabLayout);

                int dp10 = dip2px(tabLayout.getContext(), 10);

                for (int i = 0; i < mTabStrip.getChildCount(); i++) {

                    View tabView = mTabStrip.getChildAt(i);

                    //拿到tabView的mTextView属性  tab的字数不固定一定用反射取mTextView

                    Field mTextViewField = tabView.getClass().getDeclaredField("textView");

                    //API28以下为mTextView

//                  Field mTextViewField = tabView.getClass().getDeclaredField("mTextView");

                    mTextViewField.setAccessible(true);

                    TextView mTextView = (TextView) mTextViewField.get(tabView);

                    tabView.setPadding(0, 0, 0, 0);

                    //字多宽线就多宽，需要测量mTextView的宽度

                    int width = 0;

                    width = mTextView.getWidth();

                    if (width == 0) {

                        mTextView.measure(0, 0);

                        width = mTextView.getMeasuredWidth();

                    }

                    //设置tab左右间距为10dp 这个间距可根据自己需求更改

                    LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) tabView.getLayoutParams();

                    params.width = width ;

                    params.leftMargin = dp10;

                    params.rightMargin = dp10;

                    tabView.setLayoutParams(params);

                    tabView.invalidate();

                }

            } catch (NoSuchFieldException e) {

                e.printStackTrace();

            } catch (IllegalAccessException e) {

                e.printStackTrace();

            }

        });

    }