我的 ViewPager 由许多片段组成。我在 actionBar 内显示片段的标题，并且使用下面的代码来设置标题。由于 ViewPager 还启动相邻片段，我在操作栏中看到下一个片段的标题。正确的处理方法应该是什么在viewpager的actionbar中设置标题？
private class MyPagerAdapter extends FragmentPagerAdapter {
private String[] titles = {
"Titleme", "Titletos", "Titleos", "Titles", "MeTitle5", "Title6",
"Title7", "Title8"
};
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public CharSequence getPageTitle(int position) {
return titles[position];
}
@Override
public android.support.v4.app.Fragment getItem(int pos) {
Bundle args = new Bundle();
switch (pos) {
case 0:
currentFragment = new HomeFragment();
getSupportActionBar().setTitle("HomeFragment");
break;
case 1:
currentFragment = new HomeFragment5();
getSupportActionBar().setTitle("HomeFragment5");
break;
case 2:
currentFragment = new HomeFragment4();
getSupportActionBar().setTitle("HomeFragment4");
break;
case 3:
currentFragment = new HomeFragment3();
getSupportActionBar().setTitle("HomeFragment3");
break;
case 4:
currentFragment = new HomeFragment4();
getSupportActionBar().setTitle("HomeFragment4");
break;
case 5:
currentFragment = new ChlHome();
getSupportActionBar().setTitle("ChlHome");
break;
case 6:
currentFragment = new GiFragment();
getSupportActionBar().setTitle("GiFragment");
break;
case 7:
currentFragment = new FlList();
getSupportActionBar().setTitle(" FlList");
break;
default:
}
return currentFragment;
}
@Override
public int getCount() {
return 8;
}
}
更新根据施克施奈德 https://stackoverflow.com/users/603270/shkschneider answer
final ViewPager pager = (ViewPager) findViewById(R.id.viewPager);
pager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
tabs.setViewPager(pager);
pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
pager.setCurrentItem(position);
switch(position) {
case 0:
getSupportActionBar().setTitle("H");
break;
case 1:
getSupportActionBar().setTitle("P");
break;
case 2:
getSupportActionBar().setTitle("A");
break;
case 3:
getSupportActionBar().setTitle("V");
break;
case 4:
getSupportActionBar().setTitle("M");
break;
case 5:
getSupportActionBar().setTitle("C");
break;
case 6:
getSupportActionBar().setTitle("G");
break;
case 7:
getSupportActionBar().setTitle("F");
break;
}
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
private class MyPagerAdapter extends FragmentPagerAdapter {
private String[] titles = {
"Titleme", "Titletos", "Titleos", "Titles", "MeTitle5", "Title6",
"Title7", "Title8"
};
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public CharSequence getPageTitle(int position) {
return titles[position];
}
@Override
public android.support.v4.app.Fragment getItem(int pos) {
Bundle args = new Bundle();
switch (pos) {
case 0:
currentFragment = new HomeFragment();
break;
case 1:
currentFragment = new HomeFragment5();
break;
case 2:
currentFragment = new HomeFragment4();
break;
case 3:
currentFragment = new HomeFragment3();
break;
case 4:
currentFragment = new HomeFragment4();
break;
case 5:
currentFragment = new ChlHome();
break;
case 6:
currentFragment = new GiFragment();
break;
case 7:
currentFragment = new FlList();
break;
default:
}
return currentFragment;
}
@Override
public int getCount() {
return 8;
}
}
}
