Android ViewPager设置不同的操作栏内容&;航行
使用ViewPager,我有两个片段:“主”和“第二个”。Android ViewPager设置不同的操作栏内容&;航行,android,android-fragments,android-actionbar,android-menu,up-navigation,Android,Android Fragments,Android Actionbar,Android Menu,Up Navigation,使用ViewPager,我有两个片段:“主”和“第二个”。 1) 我想为这两个片段设置不同的操作栏标题。 2) 我想为这两个片段设置不同的操作栏项。 3) 当我处于“秒”位置时,我想执行到“主”的“向上导航”。 My MainActivity.java: public class MainActivity extends ActionBarActivity { /** * The {@link android.support.v4.view.PagerAdapter} th
1) 我想为这两个片段设置不同的操作栏标题。
2) 我想为这两个片段设置不同的操作栏项。
3) 当我处于“秒”位置时,我想执行到“主”的“向上导航”。
My MainActivity.java:
public class MainActivity extends ActionBarActivity {
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a {@link FragmentPagerAdapter}
* derivative, which will keep every loaded fragment in memory. If this
* becomes too memory intensive, it may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(
getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class
// below).
switch (position) {
case 0:
return new FragmentMain();
case 1:
return new FragmentSettings();
}
return null;
}
@Override
public int getCount() {
// Show 2 total pages.
return 2;
}
}
}
您可以向ViewPager中添加一个。在onPageSelected
回调方法中进行调整。例如
@Override
public void onPageSelected(int position) {
// set Activity title
setTitle(/*get title based on position*/);
}