在我的应用程序中，我正在使用带有 View 寻呼机的支持库中的 TabLayout。我有 3 个 fragment 。假设我在 fragA 中，它有一个按钮，点击它会带我到 fragB。我成功地去 fragB 但唯一的问题是tab指示符还是在fragA。
代码
private void setupTablayout() {
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
tabLayout.setupWithViewPager(viewPager);
viewPager.setCurrentItem(1, true);
tabLayout.getTabAt(0).setIcon(R.drawable.archive).setText("");
tabLayout.getTabAt(1).setIcon(R.drawable.status_1).setText("");
tabLayout.getTabAt(2).setIcon(R.drawable.settings).setText("");
tvHeader.setText("STATUS");
tabLayout.setOnTabSelectedListener(this);
//tabLayout.setOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(viewPager));
}
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
switch (tab.getPosition()) {
case 0:
tab.setIcon(R.drawable.archive_1).setText("");
tvHeader.setText("ARCHIVES");
tvDate.setVisibility(View.GONE);
ivRefresh.setVisibility(View.VISIBLE);
break;
case 1:
tab.setIcon(R.drawable.status_1).setText("");
tvHeader.setText("STATUS");
tvDate.setVisibility(View.VISIBLE);
ivRefresh.setVisibility(View.VISIBLE);
break;
case 2:
tab.setIcon(R.drawable.settings_1).setText("");
tvHeader.setText("SETTINGS");
tvDate.setVisibility(View.GONE);
ivRefresh.setVisibility(View.GONE);
break;
}
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
switch (tab.getPosition()) {
case 0:
tab.setIcon(R.drawable.archive).setText("");
break;
case 1:
tab.setIcon(R.drawable.status).setText("");
break;
case 2:
tab.setIcon(R.drawable.settings).setText("");
break;
}
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
switch (tab.getPosition()) {
case 0:
tab.setIcon(R.drawable.archive).setText("");
break;
case 1:
tab.setIcon(R.drawable.status).setText("");
break;
case 2:
tab.setIcon(R.drawable.settings).setText("");
break;
}
}
class MyPagerAdapter extends FragmentPagerAdapter {
public MyPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
// tabLayout.getTabAt(0).setIcon(R.drawable.archive_1).setText("");
// tabLayout.getTabAt(1).setIcon(R.drawable.status).setText("");
// tabLayout.getTabAt(2).setIcon(R.drawable.settings).setText("");
fragment = new ArchivesFrag();
break;
case 1:
// tabLayout.getTabAt(0).setIcon(R.drawable.archive).setText("");
// tabLayout.getTabAt(1).setIcon(R.drawable.status_1).setText("");
// tabLayout.getTabAt(2).setIcon(R.drawable.settings).setText("");
fragment = StatusFrag.newInstance(listPosition);
break;
case 2:
// tabLayout.getTabAt(0).setIcon(R.drawable.archive).setText("");
// tabLayout.getTabAt(1).setIcon(R.drawable.status).setText("");
// tabLayout.getTabAt(2).setIcon(R.drawable.settings_1).setText("");
fragment = new SettingFrag();
break;
}
return fragment;
}
@Override
public int getCount() {
return 3;
}
}
fragment A
{
((Home) getActivity()).getArchiveList();
}
最佳答案
代替
viewPager.setCurrentItem(tab.getPosition());
你可以使用，
tab.select();
关于android - 在 TabLayout 支持库中以编程方式设置选项卡指示器位置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31025044/