/** * Modify the underline length of TableLayout through reflection mechanism */ public void setIndicator(TabLayout tabs, int leftDip, int rightDip) { // get it by reflection Class tabLayout = tabs.getClass(); Field tabStrip = null; try { tabStrip = tabLayout.getDeclaredField("mTabStrip"); } catch (NoSuchFieldException e) { e.printStackTrace (); } //set mode tabStrip.setAccessible(true); //get tabview LinearLayout llTab = null; try { llTab = (LinearLayout) tabStrip.get(tabs); } catch (IllegalAccessException e) { e.printStackTrace (); } //Set the padding of the tabView to 0, and set the margin int left = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, leftDip, Resources.getSystem().getDisplayMetrics()); int right = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, rightDip, Resources.getSystem().getDisplayMetrics()); for (int i = 0; i < llTab.getChildCount(); i++) { View child = llTab.getChildAt(i); child.setPadding(0, 0, 0, 0); LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.MATCH_PARENT, 1); params.leftMargin = left; params.rightMargin = right; child.setLayoutParams(params); child.invalidate(); } }
transfer
//Set the underscore length homeFragment_tab.post(new Runnable() { @Override public void run() { setIndicator(homeFragment_tab,60,60); } });