TabLayout自定义指示器之三角形效果

效果图如下 废话不扯 下面直接copy代码

ScanToPayActivity布局

<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="0dp"
        android:layout_height="@dimen/toolbar_size"
        android:background="@color/colorPrimary"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navigationIcon="@drawable/login_return"/>

    <com.flyco.tablayout.SlidingTabLayout
        android:id="@+id/sliding_tab"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:background="@color/colorWhite"
        app:layout_constraintDimensionRatio="W,0.1:1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/toolbar"
        app:tabSelectedTextColor="@color/colorGreenText"
        app:tabTextColor="@color/colorNormalText"
        app:tl_indicator_color="@color/colorPrimary"
        app:tl_indicator_style="TRIANGLE"
        app:tl_tab_space_equal="true"
        app:tl_textSelectColor="@color/colorPrimary"
        app:tl_textUnselectColor="@color/colorNormalText"
        app:tl_textsize="14sp"/>

    <View
        android:id="@+id/view_line"
        android:layout_width="0dp"
        android:layout_height="1px"
        android:background="@color/colorPrimary"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/sliding_tab"/>

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/view_line"/>

</android.support.constraint.ConstraintLayout>

ScanToPayActivity 代码

private Unbinder mUnbinder;
    @BindView(R.id.toolbar)
    Toolbar mToolbar;
    @BindView(R.id.sliding_tab)
    SlidingTabLayout mSlidingTabLayout;
    @BindView(R.id.viewpager)
    ViewPager mViewPager;
    private String[] mTitles;
    private ArrayList<Fragment> mFragments = new ArrayList<>();

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_scancode_topay);
        mUnbinder = ButterKnife.bind(this);
        initData();
    }

    private void initData() {
        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayShowTitleEnabled(false);
        ActivityUtils.addToolbarTitle(this, mToolbar, R.string.scan_to_pay);
        //这里是Lambda表达式
        mToolbar.setNavigationOnClickListener(view -> {
            onBackPressed();
        });
        mTitles = new String[]{getString(R.string.paid_order), getString(R.string.unpaid_order)};
        PaidOrderFragment paidOrderFragment = PaidOrderFragment.newInstance();
        UnpaidOrderFragment unpaidOrderFragment = UnpaidOrderFragment.newInstance();
        //给碎片设置适配器
        mViewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public int getCount() {
                return mTitles.length;
            }

            @Override
            public Fragment getItem(int position) {
                if (position == 0) {
                    return paidOrderFragment;
                } else {
                    return unpaidOrderFragment;
                }
            }

            @Nullable
            @Override
            public CharSequence getPageTitle(int position) {
                return mTitles[position];
            }
        });
        //添加碎片
        mFragments.add(paidOrderFragment);
        mFragments.add(unpaidOrderFragment);
        //设置滑动
        mSlidingTabLayout.setViewPager(mViewPager, mTitles, this, mFragments);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mUnbinder.unbind();
    }

• 其他两个fragment就不写进来了 自己随便写2个例子 试下效果就可以
• 不懂可以提出 一起交流！

源码及自定义代码 请点击 https://blog.csdn.net/Life_s/article/details/80409622