我有一个由3个布局组成的常规活动。我想要做的是在三个布局的 ONE 中实现 FragmentActivity ,而不是整个活动中的 FragmentActivity 。显然,当我尝试做
时FragmentActivity fragment = new FragmentActivity();
它会导致活动崩溃,因为它尝试在另一个活动中创建活动("活动已被销毁" )。
所以我想做的是在框架布局中实现这个系统(滑动),到目前为止我有这个代码
在 onCreate :
内FragmentActivity fragment = new FragmentActivity(); //THIS LINE CRASHES
final ViewPager viewPager = (ViewPager) findViewById(R.id.mainPager);
final ActionBar actionBar = getActionBar();
customTabsAdapter tabsAdapter = new customTabsAdapter(fragment.getSupportFragmentManager());
viewPager.setAdapter(tabsAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
ActionBar.TabListener tab_listener = new ActionBar.TabListener() {
@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
};
customTabsAdapter:
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class customTabsAdapter extends FragmentPagerAdapter {
public postPlaceTabsAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int index) {
switch (index) {
case 0:
// Top Rated fragment activity
return new type1();
case 1:
// Games fragment activity
return new type2();
case 2:
// Movies fragment activity
return new type3();
}
return null;
}
@Override
public int getCount() {
// get item count - equal to number of tabs
return 3;
}
}
型" X":
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class typeX extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.typeX_layout, container, false);
return rootView;
}
}
如果有人能帮我理解如何做到这一点,我将深表感激......