我尝试了很多次但是不行。 我尝试在MainActivity中更改actionBar，但TabBar没有更改，所以我不知道如何更改它。
这是我的代码： MainActivivty
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private ActionBar actionBar;
private TabsPagerAdapter mAdapter;
private String[] tabs = { "Bài Hát", "Yêu Thích"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActionBar ac = getActionBar();
ac.setBackgroundDrawable(new ColorDrawable(Color.rgb(72, 209, 204)));
//ac.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#E64260")));
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
viewPager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
if (position == 1) {
TabYeuThich frag = (TabYeuThich) mAdapter
.getFragmentTabYeuThich(1);
frag.resetPage();
} else {
TabBaiHat frag = (TabBaiHat) mAdapter
.getFragmentTabBaiHat(0);
frag.resetPage();
}
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
这是类：TabsPagerAdapter
public class TabsPagerAdapter extends FragmentPagerAdapter {
FragmentManager fm;
TabYeuThich fragYeuThich;
TabBaiHat fragBaiHat;
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
this.fm = fm;
}
@Override
public Fragment getItem(int index) {
// TODO Auto-generated method stub
switch (index) {
case 0:
fragBaiHat = new TabBaiHat();
return fragBaiHat;
case 1:
fragYeuThich = new TabYeuThich();
return fragYeuThich;
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 2;
}
public Fragment getFragmentTabYeuThich(int post) {
return fragYeuThich;
}
public Fragment getFragmentTabBaiHat(int post) {
return fragBaiHat;
}
请帮帮我！谢谢大家！