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| public class MainActivity extends AppCompatActivity implements ViewPager.OnPageChangeListener ,BlankFragment.OnFragmentInteractionListener,BlankFragment2.OnFragmentInteractionListener,BlankFragment3.OnFragmentInteractionListener{
private BottomNavigationView navigation;
private ViewPager viewpager;
private List<Fragment> fragmentList =new ArrayList<Fragment>();
private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
viewpager.setCurrentItem(item.getOrder());
return false;
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
navigation = (BottomNavigationView) findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
viewpager =(ViewPager)findViewById(R.id.viewpager);
viewpager.addOnPageChangeListener(this);
Fragment fragment1 = new BlankFragment();
Fragment fragment2 = new BlankFragment2();
Fragment fragment3 = new BlankFragment3();
fragmentList.add(fragment1);
fragmentList.add(fragment2);
fragmentList.add(fragment3);
viewpager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
@Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}
@Override
public int getCount() {
return fragmentList.size();
}
});
}
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
navigation.getMenu().getItem(position).setChecked(true);
}
@Override
public void onPageScrollStateChanged(int state) {
}
@Override
public void onFragmentInteraction(Uri uri) {
}
}
|
