一、找到对应的控件 tabLayout = (TabLayout) view.findViewById(R.id.tab_layout); tabLayout.post(new Runnable() {
@Override public void run() { setIndicator(tabLayout,60,60); } }); 二、实现setIndicator方法
public void setIndicator (TabLayout tabs,int leftDip,int rightDip){ Class<?> tabLayout = tabs.getClass(); java.lang.reflect.Field tabStrip = null; try { tabStrip = tabLayout.getDeclaredField("mTabStrip"); } catch (NoSuchFieldException e) { e.printStackTrace(); } tabStrip.setAccessible(true); LinearLayout llTab = null; try { llTab = (LinearLayout) tabStrip.get(tabs); } catch (IllegalAccessException e) { e.printStackTrace(); } 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(); } } 效果图