Question

如果点击抽屉菜单上的项目，如何更改 HomeActivity 上的当前标签？

在 SlidingTabsBasicFragment.java 上创建的视图。它呼吁 HomeActivity.java HomeActivity 中的 DrawerMenu ，因此当点击抽屉菜单上的项目时，我需要更改 HomeActivity 上的当前标签。

PS：对不起我的英文：）

HomeActivity.java

...
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(com.tagwishes.fc.R.layout.activity_home);




    if (savedInstanceState == null) {
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        SlidingTabsBasicFragment fragment = new SlidingTabsBasicFragment();

        transaction.replace(R.id.sample_content_fragment, fragment);
        transaction.commit();

    }

...

我需要这样的东西：

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(com.tagwishes.fc.R.layout.activity_home);




    if (savedInstanceState == null) {
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        SlidingTabsBasicFragment fragment = new SlidingTabsBasicFragment();

        transaction.replace(R.id.sample_content_fragment, fragment);
        transaction.commit();

    }

    btn = (Button) findViewById(R.id.btn);

    OnClickListener oclBtn = new OnClickListener() {
        @Override
        public void onClick(View v) {

            //HOW TO GET mViewPager
            mViewPager.setCurrentItem(3);// 3 FOR EXAMPLE

        }
    };


    btn.setOnClickListener(oclBtn);

在 SlidingTabsBasicFragment.class

中调用

mViewPager

    @Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    // BEGIN_INCLUDE (setup_viewpager)
    // Get the ViewPager and set it's PagerAdapter so that it can display items
    mViewPager = (ViewPager) view.findViewById(R.id.viewpager);
    mViewPager.setAdapter(new SamplePagerAdapter());
    // END_INCLUDE (setup_viewpager)

    // BEGIN_INCLUDE (setup_slidingtablayout)
    // Give the SlidingTabLayout the ViewPager, this must be done AFTER the ViewPager has had
    // it's PagerAdapter set.
    mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs);
    mSlidingTabLayout.setCustomTabView(R.layout.custom_tab, 0);



    //mSlidingTabLayout.setSelectedIndicatorColors(R.color.bg_register);
    mSlidingTabLayout.setViewPager(mViewPager);
    // END_INCLUDE (setup_slidingtablayout)




}

Answer 1

添加监听器NavigationDrawer布局。并与ActionBarDrawerToggle：

相关联

ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout /* your drawer layout reference */,
            R.drawable.ic_drawer, R.string.drawer_open,
            R.string.drawer_close) {

        public void onDrawerClosed(View view) {
            super.onDrawerClosed(view);
            /* do what you want with View Pager */
            mViewPager.setCurrentItem(item_id);
        }

        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
        }
    });

ViewPager可以在onCreate()中初始化：

ViewPager mViewPager = findViewById(R.id.pagerId);
// add adapter
mViewPager.setAdapter(mAdapter /* Your adapter */);

Answer 2

我解决了我的问题：

所以我将 SlidingTabsBasicFragment.class OnViewCreated（）代码复制到 HomeActivity.class 并删除 SlidingTabsBasicFragment.class 。最终的HomeActivity.class

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(com.tagwishes.fc.R.layout.activity_home);



    mViewPager = (ViewPager) findViewById(R.id.viewpager);
    mViewPager.setAdapter(new SamplePagerAdapter());

    // END_INCLUDE (setup_viewpager)

    // BEGIN_INCLUDE (setup_slidingtablayout)
    // Give the SlidingTabLayout the ViewPager, this must be done AFTER the ViewPager has had
    // it's PagerAdapter set.
    mSlidingTabLayout = (SlidingTabLayout) findViewById(R.id.sliding_tabs);
    mSlidingTabLayout.setCustomTabView(R.layout.custom_tab, 0);



    //mSlidingTabLayout.setSelectedIndicatorColors(R.color.bg_register);
    mSlidingTabLayout.setViewPager(mViewPager);
    // END_INCLUDE (setup_slidingtablayout)

现在我可以实现oncliklistener并使用mViewPager.setCurrentItem（position）更改所选选项卡;

onClick（）抽屉菜单项上的SlidingTabLayout getCurrentItem（）

2 个答案: