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我绝对是Android编程的新手，我很难使其工作（我非常接近，但我错过了一些重要的东西）。替换ViewPager中另一个片段中的片段
我有一个名为PatientPagerActivity的活动，它通过病人信息的片段进行页面化。在每个PatientFragment中，我有一个按钮，点击后，除了患者信息外，还会提供一些其他信息。所以我打算在PatientPagerActivity中做的是用PatientWithMiscFragment替换PatientFragment（它具有患者信息和其他部分）。
的activity_pager.xml文件：
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
PatientPagerActivity文件：
public class PatientPagerActivity extends FragmentActivity
implements PatientPagerActivityCallbacks {
private ViewPager mViewPager;
private List<Patient> mQuizProblemList;
private int mCurrentIndex;
private List<PatientFragment> mPatientFragmentList;
private List<PatientWithMiscFragment> mPatientWithMiscFragmentList;
private static final String EMPTY_TEXT = "";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pager);
mViewPager = (ViewPager) findViewById(R.id.viewPager);
mPatientList =
PatientManager.getInstance(this).getPatients();
FragmentManager fm = getSupportFragmentManager();
mViewPager.setAdapter(new FragmentStatePagerAdapter(fm) {
@Override
public int getCount() {
return mPatientList.size();
}
@Override
public Fragment getItem(int location) {
Patient patient = mPatientList.get(location);
PatientFragment fragment =
PatientFragment.newInstance(patient);
PatientWithMiscFragment miscFragment =
PatientWithMiscFragment.newInstance(patient);
if(mPatientFragmentList== null) {
mPatientFragmentList =
new ArrayList<PatientFragment>();
}
mPatientFragmentist.add(fragment);
if(mPatientWithMiscFragmentList == null) {
mPatientWithMiscFragmentList =
new ArrayList<PatientWithMiscFragment>();
}
mPatientWithMiscFragmentList.add(miscFragment);
return fragment;
}
});
mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int counter) {
setTitle("Patient: " + (counter + 1));
mCurrentIndex = counter;
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
hideMiscInformation();
}
});
long patientID =
getIntent().getLongExtra(PatientFragment.EXTRA_PATIENT_ID, -1);
for(int counter = 0; counter < mPatientList.size(); counter++) {
if(mPatientList.get(counter).getPatient().getID() == patientID) {
mViewPager.setCurrentItem(counter);
setTitle("Patient: " + (counter + 1));
mCurrentIndex = counter;
break;
}
}
}
@Override
public void onMiscSelected() {
if(findViewById(R.id.viewPager) != null) {
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
//Find the current PatientInformation
Fragment oldFragment = mPatientFragmentList.get(mCurrentIndex);
//And Remove it
if(oldFragment != null) {
ft.remove(oldFragment);
ft.commit();
}
//Notify the adapter that data set has changed.
notifyAdapterDataSetChanged();
ft = fm.beginTransaction();
//Replace it with the corresponding fragment that also has misc
ft.add(R.id.viewPager,
mPatientWithMiscFragmentList.get(mCurrentIndex));
ft.commit();
notifyAdapterDataSetChanged();
}
}
public void hideMiscInformation() {
if(findViewById(R.id.viewPager) != null) {
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
//Remove the misc information
Fragment oldMiscFragment =
fm.findFragmentById(R.id.viewPager);
if(oldMiscFragment != null) {
ft.remove(oldMiscFragment);
ft.commit();
}
//Replace it with ONLY the patient information.
ft = fm.beginTransaction();
ft.add(R.id.viewPager, mPatientFragmentList.get(mCurrentIndex));
ft.commit();
notifyAdapterDataSetChanged();
}
}
:
:
}
当用户感兴趣的各种信息，回调发生了PagerActivity和onMiscSelected（）将取代带有PatientWithMiscFragment的PatientFragment。但是，在我的情况下，这没有发生。
请帮助我确定我要出错的地方。
谢谢！
Reiksiel，你提示此作为viewpager XML：<？XML版本= “1.0” 编码= “UTF-8”> <机器人.support.v4.view.ViewPager的xmlns：机器人= “http://schemas.android.com/apk/res/android” \t \t机器人：ID = “@ + ID/viewPager” \t \t机器人：layout_width = “match_parent” \t \t android：layout_height =“match_parent”> \t \t \t <的FrameLayout机器人：ID = “@ + ID/PatientFragment” \t \t机器人：layout_width = “match_parent” \t \t机器人：layout_height = “match_parent”/> \t \t \t – user2808089
这是如何使用framelayout。我可能是错的，但我认为FragmentStatePageAdapter管理所有的片段。并且这些片段由getItem（int位置）返回。 – user2808089
对不起，我不清楚。 – Reiksiel