使用按钮

Question

有没有办法可以在这样的片段中间使用附加按钮转到下一个书签？ 我想沉迷于加载第二个标签，具体取决于第一个标签中按下的按钮。当您选择此按钮以自动移动到下一个选项卡时。

编辑：

public class MainActivity extends AppCompatActivity {

    private SectionsPagerAdapter mSectionsPagerAdapter;
    private ViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        // Create the adapter that will return a fragment for each of the three
        // primary sections of the activity.
        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.container);
        mViewPager.setAdapter(mSectionsPagerAdapter);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(mViewPager);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public class SectionsPagerAdapter extends FragmentPagerAdapter {

        public SectionsPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {

            switch (position) {
                case 0:
                    Start tab1 = new Start();
                    return tab1;
                case 1:
                    Rectangle tab2a = new Rectangle();
                    return tab2a;
                case 2:
                    Parameters tab3 = new Parameters();
                    return tab3;
                case 3:
                    Loads tab4 = new Loads();
                    return tab4;
                case 4:
                    Results tab5 = new Results();
                    return tab5;
                default:
                    return null;
        }
    }



        @Override
        public int getCount() {
            // Show 5 total pages.
            return 5;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            switch (position) {
                case 0:
                    return "START";
                case 1:
                    return "CROSS";
                case 2:
                    return "PARAM";
                case 3:
                    return "LOADS";
                case 4:
                    return "RESULT";
            }
            return null;
        }
    }
}

public class Start extends Fragment{

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.start_tab1, container, false);


        final Button button = (Button) rootView.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
              System.out.println("Rectangle");

            }
        });

        final Button button2 = (Button) rootView.findViewById(R.id.button2);
        button2.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                System.out.println("Circle");
            }
        });

        return rootView;
    };


    }

Answer 1

点击按钮即可简单地调用此API。

mViewpager.setCurrentItem(int index)//0 for first tab, 1 for second tab and 3 for third tab.

您需要使用标签切换viewpager。

tabs.getTabAt(int index).select();

Answer 2

将您的ViewPager设为公共字段

public ViewPager mViewPager;

然后在片段按钮clickListener

中调用此方法

((MainActivity) getActivity()).mViewPager.setCurrentItem(position);