TabLayout onTabSelected未调用

Question

我在活动中使用android.support.design.widget.TabLayout和android.support.v4.view.ViewPager 没有错误。所有标签都显示罚款，可以选择，滑动工作。

活动代码：

ViewPager mViewPager;
TabLayout mSlidingTabs;
mSlidingTabs = (TabLayout) findViewById(R.id.tabs);
        mSlidingTabs.setupWithViewPager(mViewPager);

        mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                Log.w(TAG, "onPageScrolled");// nothing happens here either
            }

            @Override
            public void onPageSelected(int position) {
                Log.w(TAG, "onPageSelected");// nothing happens here either
            }

            @Override
            public void onPageScrollStateChanged(int state) {
                Log.w(TAG, "onPageScrollStateChanged");// nothing happens here either
            }
        });
        mSlidingTabs.setOnTabSelectedListener(
                new TabLayout.ViewPagerOnTabSelectedListener(mViewPager) {
                    @Override
                    public void onTabSelected(TabLayout.Tab tab) {
                        super.onTabSelected(tab);
                        Log.w(TAG, "selected");
                    }
                    @Override
                    public void onTabUnselected(TabLayout.Tab tab) {
                        Log.w(TAG, "onTabUnselected");
                    }

                    @Override
                    public void onTabReselected(TabLayout.Tab tab) {
                        Log.w(TAG, "onTabReselected");
                    }
                });  

我错过了什么？

Answer 1

下面的代码tablayout＆amp; viewpager snyc

  pagerList.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));

Answer 2

尝试按此顺序执行操作：

1. 调用`setupWithViewPager（）;
2. 添加onTabSelectedListener();

喜欢这样：

mSlidingTabs.setupWithViewPager(mViewPager);
mSlidingTabs.setOnTabSelectedListener(
  new TabLayout.ViewPagerOnTabSelectedListener(mViewPager) {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        super.onTabSelected(tab);
        Log.d(TAG, "Tab selected");
    }
});

如果这不起作用，则问题必须超出您提供的代码范围。如果是这种情况，请提供一些反馈，以便我们进一步调查。