如何从列表视图活动导航到选项卡式片段活动

Question

我是Android编程新手，我需要你的帮助。请。我想做什么。

我创建了listview，从listview我创建了OnItemClickListener到TabbedActivity。

现在，我希望每个列表视图项目在选项卡式活动上显示不同的片段。

这是列表视图活动

public class BookListActivity extends AppCompatActivity {
android.support.v7.widget.Toolbar toolbar;
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_song_list);
toolbar = (android.support.v7.widget.Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("Best Selling Books by Author");
listView = (ListView) findViewById(R.id.listView);
ArrayAdapter<String> mAdapter = new ArrayAdapter<String>(SongListActivity.this,
android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.bookList));
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Intent intent = new Intent(ListViewActivity.this, TabbedActivity.class);
intent.putExtra("BookList", listView.getItemAtPosition(i).toString());
startActivity(intent);
}
});

listView.setAdapter(mAdapter);
}
}

这是我的选项卡式活动

public class TabbedActivity extends AppCompatActivity {
private static final String TAG = "HymnActivity";
private SectionsPageAdapter mSectionsPageAdapter;
private ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hymn);
Log.d(TAG, "onCreate: Starting");
mSectionsPageAdapter = new SectionsPageAdapter(getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.container);
setupViewPager(mViewPager);
//        Bundle bundle = getIntent().getExtras();
//        if(bundle != null) {
////           HOW SHOULD I IMPLEMENT THIS
//        }
}
private void setupViewPager(ViewPager viewPager) {
SectionsPageAdapter adapter = new SectionsPageAdapter(getSupportFragmentManager());
adapter.addFragment(new Book1(), "Book1");
adapter.addFragment(new Book2(), "Book2");
adapter.addFragment(new Book3(), "Book3");
adapter.addFragment(new Book4(), "Book4");
adapter.addFragment(new Book5(), "Book5");
adapter.addFragment(new Book6(), "Book6");
adapter.addFragment(new Book7(), "Book7");
adapter.addFragment(new Book8(), "Book8");
adapter.addFragment(new Book9(), "Book9");
adapter.addFragment(new Book10(), "Book10");
viewPager.setAdapter(adapter);
}

}

这是我的章节寻呼适配器

public class SectionsPageAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();

public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}

public SectionsPageAdapter(FragmentManager fm) {
super(fm);
}
@Nullable
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
}

这是我的片段之一

public class Book274 extends Fragment {
private static final String TAG = "Book274";
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.book274, container, false);
return view;
}
}

到目前为止，当我滑动浏览它们时，选项卡式片段效果很好。但我不能去特定的幻灯片。它总是从头开始，我有超过 200 个选项卡

这就是为什么我想实现列表视图选项卡。这样，我可以从列表视图中访问我选择的特定选项卡/片段，并且仍然可以从那里向前或向后滑动。

谢谢 帕皮。

Answer 1

传递要在意向中打开的选项卡编号。

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Intent intent = new Intent(ListViewActivity.this, TabbedActivity.class);
intent.putExtra("tabNum", i); //which tab number you want to open
startActivity(intent);
}
});

现在提取 TabbedActivity 中的意图数据(您托管片段的活动(，如下所示：

String tabNum = intent.getExtras().getString("tabNum");

并将视图寻呼机设置为该数字：

viewPager.setCurrentItem(tabNum);