I want to get data from activity but I keep getting error this error:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference.
TrafficActivity.class (Activity)
public class TrafficActivity extends AppCompatActivity {
public static final String FRAGMENT_PDF_RENDERER_BASIC = "pdf_renderer_basic";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_traffic);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_traffic);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(TrafficActivity.this, IpuclariSayfasi.class));
}
});
if (savedInstanceState == null)
{
getFragmentManager().beginTransaction()
.add(R.id.container, new PdfRendererBasicFragment(), FRAGMENT_PDF_RENDERER_BASIC)
.commit();
}
}}
PdfRendererBasicFragment.class(Fragment)
public class PdfRendererBasicFragment extends Fragment implements
View.OnClickListener
{
private static final String O_ANKI_SAYFA_DURUMU = "guncel_sayfa_index";
private ParcelFileDescriptor mFileDescriptor;
private PdfRenderer mPdfRenderer;
private PdfRenderer.Page mGuncelSayfa;
private ImageView mImageView;
private ImageButton mOncekiButon;
private ImageButton mSonrakiButon;
public static String FILENAME;
public PdfRendererBasicFragment()
{
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
return inflater.inflate(R.layout.fragment_pdf_renderer_basic, container, false);
}
#Override
public void onClick(View view)
{
switch (view.getId()) {
case R.id.onceki: {
//onceki sayfaya geç
showPage(mGuncelSayfa.getIndex() - 1);
break;
}
case R.id.sonraki: {
// sonraki sayfaya geç
showPage(mGuncelSayfa.getIndex() + 1);
break;
}
}
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mImageView = (ImageView) view.findViewById(R.id.pdf_goruntusu);
mOncekiButon = (ImageButton) view.findViewById(R.id.onceki);
mSonrakiButon = (ImageButton) view.findViewById(R.id.sonraki);
mOncekiButon.setOnClickListener(this);
mSonrakiButon.setOnClickListener(this);
int index = 0;
if (null != savedInstanceState) {
index = savedInstanceState.getInt(O_ANKI_SAYFA_DURUMU, 0);
}
showPage(index);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
openRenderer(activity);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(activity, "Beklenmedik hata: " + e.getMessage(), Toast.LENGTH_SHORT).show();
activity.finish();
}
}
#Override
public void onDetach() {
try {
closeRenderer();
} catch (IOException e) {
e.printStackTrace();
}
super.onDetach();
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (null != mGuncelSayfa) {
outState.putInt(O_ANKI_SAYFA_DURUMU, mGuncelSayfa.getIndex());
}
}
private void openRenderer(Context context) throws IOException
{
// bu ornekte, asset klasöründeki PDF'i okuyoruz.
FILENAME= getArguments().getString("file_name");
File file = new File(context.getCacheDir(), FILENAME);
if (!file.exists())
{
InputStream asset = context.getAssets().open(FILENAME);
FileOutputStream output = new FileOutputStream(file);
final byte[] buffer = new byte[1024];
int size;
while ((size = asset.read(buffer)) != -1) {
output.write(buffer, 0, size);
}
asset.close();
output.close();
}
mFileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
mPdfRenderer = new PdfRenderer(mFileDescriptor);
}
private void closeRenderer() throws IOException {
if (null != mGuncelSayfa) {
mGuncelSayfa.close();
}
mPdfRenderer.close();
mFileDescriptor.close();
}
private void showPage(int index) {
if (mPdfRenderer.getPageCount() <= index) {
return;
}
if (null != mGuncelSayfa) {
mGuncelSayfa.close();
}
mGuncelSayfa = mPdfRenderer.openPage(index);
// ÖNEMLİ: Hedef bitmap ARGB olmalı, RGB olmamalı.
Bitmap bitmap = Bitmap.createBitmap(mGuncelSayfa.getWidth(), mGuncelSayfa.getHeight(),
Bitmap.Config.ARGB_8888);
mGuncelSayfa.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
mImageView.setImageBitmap(bitmap);
sayfayıGuncelle();
}
private void sayfayıGuncelle() {
int index = mGuncelSayfa.getIndex();
int pageCount = mPdfRenderer.getPageCount();
mOncekiButon.setEnabled(0 != index);
mSonrakiButon.setEnabled(index + 1 < pageCount);
getActivity().setTitle(getString(R.string.app_name_with_index, index + 1, pageCount));
}
public int sayfaSayisiniGetir()
{
return mPdfRenderer.getPageCount();
}
You are setting the argument on the Fragment but calling the Activity
#Override
public void onClick(View view) {
Bundle bundle = new Bundle();
bundle.putString("file_name", "sample3.pdf");
PdfRendererBasicFragment ff=new PdfRendererBasicFragment();
ff.setArguments(bundle);
startActivity(new Intent(IpuclariSayfasi.this,TrafficActivity.class));
}
And when you really commit the Fragment, you creating a new instance, without any argument:
if (savedInstanceState == null)
{
getFragmentManager().beginTransaction()
.add(R.id.container, new PdfRendererBasicFragment(), FRAGMENT_PDF_RENDERER_BASIC)
.commit();
}
Make the first implementation on the real Fragment call, like this:
if (savedInstanceState == null) {
Bundle bundle = new Bundle();
bundle.putString("file_name", "sample3.pdf");
PdfRendererBasicFragment ff=new PdfRendererBasicFragment();
ff.setArguments(bundle);
getFragmentManager().beginTransaction()
.add(R.id.container, ff, FRAGMENT_PDF_RENDERER_BASIC)
.commit();
}
You have the problem here
FILENAME= getArguments().getString("file_name");
getArguments() is null since you are setting arguments for
PdfRendererBasicFragment ff=new PdfRendererBasicFragment();
ff.setArguments(bundle);
but then you're creating a new Fragment in TrafficActivity.class
.add(R.id.container, new PdfRendererBasicFragment(), FRAGMENT_PDF_RENDERER_BASIC)
and this is the one you're using, but this one does not have any arguments in it
Related
I am creating an android app, where I'll be asking for multiple types of questions using RadioButtons. I don't want to make multiple Activities for these questions. Can anyone please tell me how to do that with a short example, of at least two questions?
You can use multiples fragments... or call the activity itself multiple times...
I did an app like yours and i choose the first method!
This is some fragment of a project that i wrote, and the activity that manipulate it, you will have to change it according to your needs.
Activity
public class CollectActivity extends FragmentActivity {
MyPageAdapter pageAdapter;
NonSwipeableViewPager pager;
SpringIndicator springIndicator;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_collect);
List<Fragment> fragments = getFragments();
pager = (NonSwipeableViewPager) findViewById(R.id.view_pager);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
PagerModelManager manager = new PagerModelManager();
manager.addCommonFragment(fragments, getTitles());
ModelPagerAdapter adapter = new ModelPagerAdapter(getSupportFragmentManager(), manager);
pager.setAdapter(adapter);
springIndicator = (SpringIndicator) findViewById(R.id.indicator);
springIndicator.setViewPager(pager);
springIndicator.setOnTabClickListener(new TabClickListener() {
#Override
public boolean onTabClick(int position) {
return false;
}
});
}
private List<Fragment> getFragments() {
List<Fragment> fList = new ArrayList<Fragment>();
fList.add(CollectFragment.newInstance("Fragment 1"));
fList.add(CollectFragment.newInstance("Fragment 2"));
fList.add(CollectFragment.newInstance("Fragment 3"));
//add your fragments with a loop
return fList;
}
private List<String> getTitles() {
return Lists.newArrayList("1", "2", "3");
}
public void swipeFragment() {
pager.setCurrentItem(pager.getCurrentItem() + 1);
}
public int getFragment() {
return pager.getCurrentItem();
}
}
Fragment
public class CollectFragment extends Fragment {
private Button openButton;
private Button confirmationCloseButton;
private Button yesRenew;
private Button noRenew;
private BroadcastReceiver udpMessages;
public static final String EXTRA_MESSAGE = "EXTRA_MESSAGE";
public static final CollectFragment newInstance(String message) {
CollectFragment f = new CollectFragment();
Bundle bdl = new Bundle(1);
bdl.putString(EXTRA_MESSAGE, message);
f.setArguments(bdl);
return f;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String message = getArguments().getString(EXTRA_MESSAGE);
View v = null;
if (message.compareTo("Fragment 1") == 0) {
v = inflater.inflate(R.layout.fragment_collect_open, container, false);
openButton = (Button) v.findViewById(R.id.open_button);
openButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i2 = new Intent();
i2.setComponent(new ComponentName("qira.com.locker", "qira.com.locker.Service.MessageService"));
i2.putExtra("Message", "CONFIRM_LOCKER_1_CLOSED");
getContext().startService(i2);
}
});
}
if (message.compareTo("Fragment 2") == 0) {
v = inflater.inflate(R.layout.fragment_collect_close, container, false);
confirmationCloseButton = (Button) v.findViewById(R.id.confirmation_close_button);
confirmationCloseButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i2 = new Intent();
i2.setComponent(new ComponentName("qira.com.locker", "qira.com.locker.Service.MessageService"));
i2.putExtra("Message", "OPEN_LOCKER_1");
getContext().startService(i2);
}
});
}
if (message.compareTo("Fragment 3") == 0) {
v = inflater.inflate(R.layout.fragment_collect_renew, container, false);
yesRenew = (Button) v.findViewById(R.id.yes_button);
noRenew = (Button) v.findViewById(R.id.no_button);
yesRenew.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
((CollectActivity) getActivity()).swipeFragment();
}
});
noRenew.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(getContext(), ReserveActivity.class);
startActivity(i);
}
});
}
return v;
}
#Override
public void onResume() {
super.onResume();
udpMessages = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() != null && intent.getAction().equals("UDP.MESSAGES.COLLECT")) {
if (intent.getExtras().getString("Type").compareTo("OPEN_LOCKER_1-LOCKER_OPENED") == 0) {
if (((CollectActivity) getActivity()).getFragment() != 0) { // onCreateView called twice, dont know why... workaround to solve this problem
((CollectActivity) getActivity()).swipeFragment();
}
}
if (intent.getExtras().getString("Type").compareTo("CONFIRM_LOCKER_1_CLOSED-TRUE") == 0) {
if (((CollectActivity) getActivity()).getFragment() != 1) { // onCreateView called twice, dont know why... workaround to solve this problem
((CollectActivity) getActivity()).swipeFragment();
}
}
}
}
};
getContext().registerReceiver(udpMessages, new IntentFilter("UDP.MESSAGES.COLLECT"));
}
#Override
public void onPause() {
super.onPause();
getContext().unregisterReceiver(udpMessages);
}
#Override
public void onDestroyView() {
super.onDestroyView();
}
}
I am trying to implement callback between AsyncTask and Fragment but cannot find correct info how to do it. The issue is that all callback implementations are between activity and asynctask but I need between fragment and asynctask. Could someone give me small working example how to implement it without activity.
My action structure: Fragment call DialogFragment -> choose something and send server request to async task -> async task process everything and update view and some variables. My main problem is that I call prepareData() only once in onCreate and when I walk between other fragment and returns come back I see old data. That is to say there is not enough to update only view in onPost of asynctask. It will be good to have callback which will update the whole variables.
public class TermsAndConditionsFragment extends SherlockFragment implements OnClickListener, OnTouchListener, OnItemClickListener, onTaskListener {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fm = getSherlockActivity().getSupportFragmentManager();
prepareData();
}
public void prepareData() {
termsAndConditionsM = new TermsAndConditionsManager(getSherlockActivity());
termsAndConditions = termsAndConditionsM.getTermsAndConditions();
if (termsAndConditions != null) {
int totalPayments = Integer.valueOf(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
if (totalPayments > 0) {
paymentsData = termsAndConditionsM.getpayments();
if (paymentsData != null) {
payments = new ArrayList<Payment>();
for (int i = 1; i <= totalPayments; i++) {
paymentValues = new Payment();
paymentValues.setPaymentID(Integer.valueOf(paymentsData.get(ServerAPI.PAYMENT_NO + "_" + i)));
paymentValues.setPaymentDate(paymentsData.get(ServerAPI.PAYMENT_DATE + "_" + i));
paymentValues.setPaymentTotalAmount(paymentsData.get(ServerAPI.PAYMENT_TOTAL + "_" + i));
payments.add(paymentValues);
}
}
}
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rootView = init(inflater, container);
if (payments != null || termsAndConditions != null)
updateTermsAndConditionsView();
return rootView;
}
private View init(LayoutInflater inflater, ViewGroup container) {
rootView = inflater.inflate(R.layout.fragment_terms_and_conditions, container, false);
...
return rootView;
}
public void updateTermsAndConditionsView() {
etHowMuch.setText("£" + termsAndConditions.get(ServerAPI.AMOUNT_OF_CREDIT));
etForHowLong.setText(Helpers.ConvertDays2Date(Integer.valueOf(termsAndConditions.get(ServerAPI.TERM_OF_AGREEMENT_IN_DAYS))));
PaymentAdapter adapter = new PaymentAdapter(getSherlockActivity(), R.layout.custom_loan_item, payments);
lvPayments.setAdapter(adapter);
tvNoOfPayments.setText(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
tvFirstPayment.setText(termsAndConditions.get(ServerAPI.FIRST_PAYMENT_DATE));
tvTotalRepayable.setText("£" + termsAndConditions.get(ServerAPI.TOTAL_REPAYABLE));
}
#Override
public void onClick(View v) {
ft = fm.beginTransaction();
howMuch = etHowMuch.getText().toString();
forHowLong = etForHowLong.getText().toString();
switch (v.getId()) {
case R.id.etHowMuch:
f = new NumberPaymentsPickerFragment();
args = new Bundle();
args.putInt(Const.HOW_MUCH, Integer.valueOf(howMuch.replace("£", "")));
args.putDouble(ServerAPI.PAYMENT_STEP, Const.PAYMENT_STEP);
args.putString(Const.STATE, ServerAPI.TERMS_AND_CONDITIONS);
f.setArguments(args);
f.setTargetFragment(this, DIALOG_FRAGMENT);
f.show(getActivity().getSupportFragmentManager(), Const.HOW_MUCH);
break;
case R.id.etForHowLong:
f = new NumberPaymentsPickerFragment();
args = new Bundle();
args.putInt(Const.FOR_HOW_LONG, Integer.valueOf(Helpers.ConvertDate2Days(forHowLong)));
args.putDouble(ServerAPI.PAYMENT_STEP, Const.PAYMENT_STEP);
args.putString(Const.STATE, ServerAPI.TERMS_AND_CONDITIONS);
f.setArguments(args);
f.setTargetFragment(this, DIALOG_FRAGMENT);
f.show(getActivity().getSupportFragmentManager(), Const.FOR_HOW_LONG);
break;
case R.id.tvPersonalDetails:
sfm.saveCurFragment(ServerAPI.PERSONAL_DETAILS, 0);
ft.replace(android.R.id.content, new PersonalDetailsFragment(), ServerAPI.PERSONAL_DETAILS).addToBackStack(null).commit();
break;
case R.id.tvAgreementDetails:
sfm.saveCurFragment(ServerAPI.AGREEMENT_DETAILS, 0);
ft.replace(android.R.id.content, new AgreementDetailsFragment(), ServerAPI.AGREEMENT_DETAILS).addToBackStack(null).commit();
break;
case R.id.bApply:
break;
}
#Override
public void onUpdateData() {
Log.d(TAG, "Update data");
}
}
DialogFragment:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle args = getArguments();
...
}
public Dialog onCreateDialog(Bundle savedInstanceState) {
...
return createDialog(v, R.string.for_how_long, etHowMuch, etForHowLong, etPromotionCode);
}
return null;
}
private Dialog createDialog(View view, int titleResID, final EditText howMuchField, final EditText forHowLongField, final EditText promotionCodeField) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(titleResID);
builder.setView(view);
builder.setPositiveButton(R.string.set, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
doShowProgress();
}
private void doShowProgress() {
ExecuteServerTaskBackground task = new
ExecuteServerTaskBackground(getActivity());
task.action = ServerAPI.GET_TERMS_AND_CONDITIONS;
onTaskListener listener = new onTaskListener() {
#Override
public void onUpdateData() {
Log.d(TAG, "Updaaate");
}
};
task.setListener(listener);
task.args = args;
task.execute();
}
}).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
return builder.create();
}
AsyncTask:
onTaskListener mListener;
public interface onTaskListener {
void onUpdateData();
}
public void setListener(onTaskListener listener){
mListener = listener;
}
public ExecuteServerTaskBackground(Activity activity) {
this.mActivity = activity;
this.mContext = activity.getApplicationContext();
}
#Override
protected void onPreExecute() {
pb = (ProgressBar) mActivity.findViewById(R.id.progressBar1);
pb.setVisibility(View.VISIBLE);
}
#Override
protected Void doInBackground(Void... params) {
ServerAPI server = new ServerAPI(mContext);
if (!args.isEmpty())
server.serverRequest(action, args);
else
server.serverRequest(action, null);
return null;
}
#Override
protected void onPostExecute(Void result) {
mListener.onUpdateData();
//There is I just update view but how to update whole variables throughtout callback?
// tvNoOfPayments = (TextView) mActivity.findViewById(R.id.tvNoOfPaymentsValue);
// tvFirstPayment = (TextView) mActivity.findViewById(R.id.tvFirstPaymentValue);
// tvTotalRepayable = (TextView) mActivity.findViewById(R.id.tvTotalRepayableValue);
//
// lvPayments = (ListView) mActivity.findViewById(R.id.lvData);
//
// termsConditionsM = new TermsAndConditionsManager(mContext);
//
// termsAndConditions = termsConditionsM.getTermsAndConditions();
//
// int totalPayments = Integer.valueOf(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
//
// if (totalPayments > 0) {
// if (termsAndConditions != null) {
// tvNoOfPayments.setText(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
// tvFirstPayment.setText(termsAndConditions.get(ServerAPI.FIRST_PAYMENT_DATE));
// tvTotalRepayable.setText("£" + termsAndConditions.get(ServerAPI.TOTAL_REPAYABLE));
// }
//
// paymentsData = termsConditionsM.getpayments();
//
// if (paymentsData != null) {
// Log.d(TAG, paymentsData.toString());
//
// payments = new ArrayList<Payment>();
//
// for (int i = 1; i <= totalPayments; i++) {
// paymentValues = new Payment();
// paymentValues.setPaymentID(Integer.valueOf(paymentsData.get(ServerAPI.PAYMENT_NO + "_" + i)));
// paymentValues.setPaymentDate(paymentsData.get(ServerAPI.PAYMENT_DATE + "_" + i));
// paymentValues.setPaymentTotalAmount(paymentsData.get(ServerAPI.PAYMENT_TOTAL + "_" + i));
// payments.add(paymentValues);
// }
//
// PaymentAdapter adapter = new PaymentAdapter(mContext, R.layout.custom_loan_item, payments);
// lvPayments.setAdapter(adapter);
// }
//
}
pb.setVisibility(View.GONE);
super.onPostExecute(result);
}
Without taking your code in consideration I will post the most essential to make a functional callback.
TestFragment:
public class TestFragment extends Fragment {
/* Skipping most code and I will only show you the most essential. */
private void methodThatStartsTheAsyncTask() {
TestAsyncTask testAsyncTask = new TestAsyncTask(new FragmentCallback() {
#Override
public void onTaskDone() {
methodThatDoesSomethingWhenTaskIsDone();
}
});
testAsyncTask.execute();
}
private void methodThatDoesSomethingWhenTaskIsDone() {
/* Magic! */
}
public interface FragmentCallback {
public void onTaskDone();
}
}
TestAsyncTask:
public class TestAsyncTask extends AsyncTask<Void, Void, Void> {
private FragmentCallback mFragmentCallback;
public TestAsyncTask(FragmentCallback fragmentCallback) {
mFragmentCallback = fragmentCallback;
}
#Override
protected Void doInBackground(Void... params) {
/* Do your thing. */
return null;
}
#Override
protected void onPostExecute(Void result) {
mFragmentCallback.onTaskDone();
}
}
i am creating a application in which i am using preference Fragment with navigation Drawer my problem is i am created navigation Drawer and in which i am added some menu item in which i want to load the preference Fragment as a first element when the app loads.it is does as i don to display. when i am changing the options I-e.when i am changing the drawer menu options like second element the in the drawer menu fist view is not replacing with the second,it is overlapping an the first
my navigation drawer xml is as follow
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.koteswara.wise.NavigationDrawerMainActivity" >
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:id="#+id/drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_gravity="start" >
<ListView
android:id="#+id/drawer_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
tools:context="com.koteswara.wise.NavigationDrawerFragment" />
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
my preference fragment is like this
public class AutoAnswerPreferenceActivity extends PreferenceFragment implements OnSharedPreferenceChangeListener {
private AutoAnswerNotifier mNotifier;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preference);
mNotifier = new AutoAnswerNotifier(getActivity());
mNotifier.updateNotification();
SharedPreferences sharedPreferences = getPreferenceManager().getSharedPreferences();
sharedPreferences.registerOnSharedPreferenceChangeListener(this);
}
#Override
public void onDestroy() {
getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
super.onDestroy();
}
#Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (key.equals("enabled")) {
mNotifier.updateNotification();
}
}
}
my fragment class which is adding to load the PreferenceFragment is
public class AutoAnswarFragment extends Fragment {
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
getActivity().getFragmentManager().beginTransaction().replace(R.id.container, new AutoAnswerPreferenceActivity()) .commit();
}
the navigation Drawer class in which show fragment method is
protected void showFragment(int position) {
// TODO Auto-generated method stub
Fragment fragment = null;
switch (position) {
case 0:
fragment = new AutoAnswarFragment();
break;
case 1:
fragment = new Tab2();
break;
case 2:
// fragment = new BhajanaFragment();
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, fragment).commit();
// update selected item and title, then close the drawer
// mDrawerList.setItemChecked(position, true);
// mDrawerList.setSelection(position);
mTitle = mDrawer_title[position];
// mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
// Log.e("MainActivity", "Error in creating fragment");
}
}
}
if i will call the fragment other than the preference Fragment like below it will works please help me
public class Tab1 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v =inflater.inflate(R.layout.tab_1,container,false);
return v;
}
}
i am struggling to clear the solution for it please any body solve it and please tell me the solution .i will be the thank full please help me
Be sure the root layout of all your fragments are having
android:background="#color/your_favorite_color"
In that way they will be hiding other fragments below.
on so many days of research and searching on the web i have found a solution its working fine for me for the above problem there is a link on the web as http://www.michenux.net/android-preferencefragmentcompat-906.html in this i found a sample apk and a source code regarding the apk . as this apk has a functionality as it solves my problem . i cleared the errors of the source code which will comes when you import and after that i added the library to my project. I used the PreferenceCompatFragment rather than PreferenceFragmentCompat, it solved my problem if anybody needs help it may help them also so that i am posting my solution to the above problem. and i thank who are all helped me who and all given some valuable suggestion for the above problem.
The below class below i have used instead of PreferenceFragmentCompat of v7 support library
public abstract class PreferenceCompatFragment extends Fragment {
private static final int FIRST_REQUEST_CODE = 100;
private static final int MSG_BIND_PREFERENCES = 1;
private static final String PREFERENCES_TAG = "android:preferences";
private boolean mHavePrefs;
private boolean mInitDone;
private ListView mList;
private PreferenceManager mPreferenceManager;
private Handler mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_BIND_PREFERENCES:
bindPreferences();
break;
}
}
};
final private Runnable mRequestFocus = new Runnable() {
public void run() {
mList.focusableViewAvailable(mList);
}
};
private void bindPreferences() {
PreferenceScreen localPreferenceScreen = getPreferenceScreen();
if (localPreferenceScreen != null) {
ListView localListView = getListView();
localPreferenceScreen.bind(localListView);
}
}
private void ensureList() {
if (mList == null) {
View view = getView();
if (view == null) {
throw new IllegalStateException("Content view not yet created");
}
View listView = view.findViewById(android.R.id.list);
if (!(listView instanceof ListView)) {
throw new RuntimeException("Content has view with id attribute 'android.R.id.list' that is not a ListView class");
}
mList = (ListView)listView;
if (mList == null) {
throw new RuntimeException("Your content must have a ListView whose id attribute is 'android.R.id.list'");
}
mHandler.post(mRequestFocus);
}
}
private void postBindPreferences() {
if (mHandler.hasMessages(MSG_BIND_PREFERENCES)) {
mHandler.obtainMessage(MSG_BIND_PREFERENCES).sendToTarget();
}
}
private void requirePreferenceManager() {
if (this.mPreferenceManager == null) {
throw new RuntimeException("This should be called after super.onCreate.");
}
}
public void addPreferencesFromIntent(Intent intent) {
requirePreferenceManager();
PreferenceScreen screen = inflateFromIntent(intent, getPreferenceScreen());
setPreferenceScreen(screen);
}
public void addPreferencesFromResource(int resId) {
requirePreferenceManager();
PreferenceScreen screen = inflateFromResource(getActivity(), resId, getPreferenceScreen());
setPreferenceScreen(screen);
}
public Preference findPreference(CharSequence key) {
if (mPreferenceManager == null) {
return null;
}
return mPreferenceManager.findPreference(key);
}
public ListView getListView() {
ensureList();
return mList;
}
public PreferenceManager getPreferenceManager() {
return mPreferenceManager;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getListView().setScrollBarStyle(0);
if (mHavePrefs) {
bindPreferences();
}
mInitDone = true;
if (savedInstanceState != null) {
Bundle localBundle = savedInstanceState.getBundle(PREFERENCES_TAG);
if (localBundle != null) {
PreferenceScreen screen = getPreferenceScreen();
if (screen != null) {
screen.restoreHierarchyState(localBundle);
}
}
}
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
dispatchActivityResult(requestCode, resultCode, data);
}
#Override
public void onCreate(Bundle paramBundle) {
super.onCreate(paramBundle);
mPreferenceManager = createPreferenceManager();
}
#Override
public View onCreateView(LayoutInflater paramLayoutInflater, ViewGroup paramViewGroup, Bundle paramBundle) {
return paramLayoutInflater.inflate(R.layout.preference_list_content, paramViewGroup, false);
}
#Override
public void onDestroy() {
super.onDestroy();
dispatchActivityDestroy();
}
#Override
public void onDestroyView() {
mList = null;
mHandler.removeCallbacks(mRequestFocus);
mHandler.removeMessages(MSG_BIND_PREFERENCES);
super.onDestroyView();
}
#Override
public void onSaveInstanceState(Bundle bundle) {
super.onSaveInstanceState(bundle);
PreferenceScreen screen = getPreferenceScreen();
if (screen != null) {
Bundle localBundle = new Bundle();
screen.saveHierarchyState(localBundle);
bundle.putBundle(PREFERENCES_TAG, localBundle);
}
}
#Override
public void onStop() {
super.onStop();
dispatchActivityStop();
}
/** Access methods with visibility private **/
private PreferenceManager createPreferenceManager() {
try {
Constructor<PreferenceManager> c = PreferenceManager.class.getDeclaredConstructor(Activity.class, int.class);
c.setAccessible(true);
return c.newInstance(this.getActivity(), FIRST_REQUEST_CODE);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private PreferenceScreen getPreferenceScreen() {
try {
Method m = PreferenceManager.class.getDeclaredMethod("getPreferenceScreen");
m.setAccessible(true);
return (PreferenceScreen) m.invoke(mPreferenceManager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void setPreferenceScreen(PreferenceScreen preferenceScreen) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("setPreferences", PreferenceScreen.class);
m.setAccessible(true);
boolean result = (Boolean) m.invoke(mPreferenceManager, preferenceScreen);
if (result && preferenceScreen != null) {
mHavePrefs = true;
if (mInitDone) {
postBindPreferences();
}
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void dispatchActivityResult(int requestCode, int resultCode, Intent data) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityResult", int.class, int.class, Intent.class);
m.setAccessible(true);
m.invoke(mPreferenceManager, requestCode, resultCode, data);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void dispatchActivityDestroy() {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityDestroy");
m.setAccessible(true);
m.invoke(mPreferenceManager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void dispatchActivityStop() {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityStop");
m.setAccessible(true);
m.invoke(mPreferenceManager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void setFragment(PreferenceFragment preferenceFragment) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("setFragment", PreferenceFragment.class);
m.setAccessible(true);
m.invoke(mPreferenceManager, preferenceFragment);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public PreferenceScreen inflateFromResource(Context context, int resId, PreferenceScreen rootPreferences) {
PreferenceScreen preferenceScreen ;
try {
Method m = PreferenceManager.class.getDeclaredMethod("inflateFromResource", Context.class, int.class, PreferenceScreen.class);
m.setAccessible(true);
preferenceScreen = (PreferenceScreen) m.invoke(mPreferenceManager, context, resId, rootPreferences);
} catch (Exception e) {
throw new RuntimeException(e);
}
return preferenceScreen;
}
public PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
PreferenceScreen preferenceScreen ;
try {
Method m = PreferenceManager.class.getDeclaredMethod("inflateFromIntent", Intent.class, PreferenceScreen.class);
m.setAccessible(true);
preferenceScreen = (PreferenceScreen) m.invoke(mPreferenceManager, queryIntent, rootPreferences);
} catch (Exception e) {
throw new RuntimeException(e);
}
return preferenceScreen;
}
}
I get this error at certian times inside my fragment
Fatal Exception: java.lang.IllegalStateException: android.os.TransactionTooLargeException
at com.google.android.youtube.api.jar.client.RemoteEmbeddedPlayer.x(SourceFile:532)
at com.google.android.apps.youtube.api.jar.a.a.w(SourceFile:472)
at com.google.android.youtube.player.internal.h.onTransact(SourceFile:390)
at android.os.Binder.transact(Binder.java:361)
at com.google.android.youtube.player.internal.d$a$a.r(Unknown Source)
at com.google.android.youtube.player.internal.s.h(Unknown Source)
at com.google.android.youtube.player.YouTubePlayerView.e(Unknown Source)
at com.google.android.youtube.player.YouTubePlayerSupportFragment.onSaveInstanceState(Unknown Source)
at com.redeagle07.alahly.youtube.YouTubeFragment.onSaveInstanceState(YouTubeFragment.java:161)
Here's the line that brings up the error
#Override
public void onSaveInstanceState(Bundle bundle) {
super.onSaveInstanceState(bundle);
bundle.putString(KEY_VIDEO_ID, mVideoId);
}
And this is how I add the fragment from the MainActivity
final YouTubeFragment fragment = YouTubeFragment.newInstance(list.get(position).getID());
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.slideup, R.anim.slideout, R.anim.slideup, R.anim.slideout);
ft.addToBackStack("xyz");
ft.add(android.R.id.content, fragment).commitAllowingStateLoss();
edit1:
The whole YoutubeFragment class
public class YouTubeFragment extends BackYoutubeFragment implements YouTubePlayer.OnInitializedListener {
private static final int RECOVERY_DIALOG_REQUEST = 1;
private static final String KEY_VIDEO_ID = "KEY_VIDEO_ID";
private String mVideoId;
private ShowingAd mListener;
#Override
public void onAttach(Context context) {
super.onAttach(context);
try {
mListener = (ShowingAd) context;
} catch (ClassCastException e) {
throw new ClassCastException(context.toString() + " must implement DrawerLockout");
}
}
#Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* Returns a new instance of this Fragment
*
* #param videoId The ID of the video to play
*/
public static YouTubeFragment newInstance(final String videoId) {
final YouTubeFragment youTubeFragment = new YouTubeFragment();
final Bundle bundle = new Bundle();
bundle.putString(KEY_VIDEO_ID, videoId);
youTubeFragment.setArguments(bundle);
return youTubeFragment;
}
#Override
public String getTagText() {
return null;
}
#Override
public boolean onBackPressed() {
try {
getFragmentManager().popBackStack();
getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}catch (NullPointerException e){
return true;
}
return false;
}
#Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
final Bundle arguments = getArguments();
if (bundle != null && bundle.containsKey(KEY_VIDEO_ID)) {
mVideoId = bundle.getString(KEY_VIDEO_ID);
} else if (arguments != null && arguments.containsKey(KEY_VIDEO_ID)) {
mVideoId = arguments.getString(KEY_VIDEO_ID);
}
initialize("xxxx", this);
}
/**
* Set the video id and initialize the player
* This can be used when including the Fragment in an XML layout
* #param videoId The ID of the video to play
*/
public void setVideoId(final String videoId) {
mVideoId = videoId;
initialize("xxxx", this);
}
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean restored) {
try {
mListener.showingAds(0);
if (mVideoId != null) {
youTubePlayer.setShowFullscreenButton(false);
if (restored) {
youTubePlayer.play();
youTubePlayer.setFullscreen(true);
} else {
youTubePlayer.loadVideo(mVideoId);
youTubePlayer.setFullscreen(true);
}
}
}catch (NullPointerException| IllegalStateException e){
e.printStackTrace();
}
}
#Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
if (youTubeInitializationResult.isUserRecoverableError()) {
youTubeInitializationResult.getErrorDialog(getActivity(), RECOVERY_DIALOG_REQUEST).show();
} else {
//Handle the failure
Toast.makeText(getActivity(), "FAIL", Toast.LENGTH_LONG).show();
}
}
#Override
public void onSaveInstanceState(Bundle bundle) {
super.onSaveInstanceState(bundle);
bundle.putString(KEY_VIDEO_ID, mVideoId);
}
}
I am trying to implement callback between AsyncTask and Fragment but cannot find correct info how to do it. The issue is that all callback implementations are between activity and asynctask but I need between fragment and asynctask. Could someone give me small working example how to implement it without activity.
My action structure: Fragment call DialogFragment -> choose something and send server request to async task -> async task process everything and update view and some variables. My main problem is that I call prepareData() only once in onCreate and when I walk between other fragment and returns come back I see old data. That is to say there is not enough to update only view in onPost of asynctask. It will be good to have callback which will update the whole variables.
public class TermsAndConditionsFragment extends SherlockFragment implements OnClickListener, OnTouchListener, OnItemClickListener, onTaskListener {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fm = getSherlockActivity().getSupportFragmentManager();
prepareData();
}
public void prepareData() {
termsAndConditionsM = new TermsAndConditionsManager(getSherlockActivity());
termsAndConditions = termsAndConditionsM.getTermsAndConditions();
if (termsAndConditions != null) {
int totalPayments = Integer.valueOf(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
if (totalPayments > 0) {
paymentsData = termsAndConditionsM.getpayments();
if (paymentsData != null) {
payments = new ArrayList<Payment>();
for (int i = 1; i <= totalPayments; i++) {
paymentValues = new Payment();
paymentValues.setPaymentID(Integer.valueOf(paymentsData.get(ServerAPI.PAYMENT_NO + "_" + i)));
paymentValues.setPaymentDate(paymentsData.get(ServerAPI.PAYMENT_DATE + "_" + i));
paymentValues.setPaymentTotalAmount(paymentsData.get(ServerAPI.PAYMENT_TOTAL + "_" + i));
payments.add(paymentValues);
}
}
}
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rootView = init(inflater, container);
if (payments != null || termsAndConditions != null)
updateTermsAndConditionsView();
return rootView;
}
private View init(LayoutInflater inflater, ViewGroup container) {
rootView = inflater.inflate(R.layout.fragment_terms_and_conditions, container, false);
...
return rootView;
}
public void updateTermsAndConditionsView() {
etHowMuch.setText("£" + termsAndConditions.get(ServerAPI.AMOUNT_OF_CREDIT));
etForHowLong.setText(Helpers.ConvertDays2Date(Integer.valueOf(termsAndConditions.get(ServerAPI.TERM_OF_AGREEMENT_IN_DAYS))));
PaymentAdapter adapter = new PaymentAdapter(getSherlockActivity(), R.layout.custom_loan_item, payments);
lvPayments.setAdapter(adapter);
tvNoOfPayments.setText(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
tvFirstPayment.setText(termsAndConditions.get(ServerAPI.FIRST_PAYMENT_DATE));
tvTotalRepayable.setText("£" + termsAndConditions.get(ServerAPI.TOTAL_REPAYABLE));
}
#Override
public void onClick(View v) {
ft = fm.beginTransaction();
howMuch = etHowMuch.getText().toString();
forHowLong = etForHowLong.getText().toString();
switch (v.getId()) {
case R.id.etHowMuch:
f = new NumberPaymentsPickerFragment();
args = new Bundle();
args.putInt(Const.HOW_MUCH, Integer.valueOf(howMuch.replace("£", "")));
args.putDouble(ServerAPI.PAYMENT_STEP, Const.PAYMENT_STEP);
args.putString(Const.STATE, ServerAPI.TERMS_AND_CONDITIONS);
f.setArguments(args);
f.setTargetFragment(this, DIALOG_FRAGMENT);
f.show(getActivity().getSupportFragmentManager(), Const.HOW_MUCH);
break;
case R.id.etForHowLong:
f = new NumberPaymentsPickerFragment();
args = new Bundle();
args.putInt(Const.FOR_HOW_LONG, Integer.valueOf(Helpers.ConvertDate2Days(forHowLong)));
args.putDouble(ServerAPI.PAYMENT_STEP, Const.PAYMENT_STEP);
args.putString(Const.STATE, ServerAPI.TERMS_AND_CONDITIONS);
f.setArguments(args);
f.setTargetFragment(this, DIALOG_FRAGMENT);
f.show(getActivity().getSupportFragmentManager(), Const.FOR_HOW_LONG);
break;
case R.id.tvPersonalDetails:
sfm.saveCurFragment(ServerAPI.PERSONAL_DETAILS, 0);
ft.replace(android.R.id.content, new PersonalDetailsFragment(), ServerAPI.PERSONAL_DETAILS).addToBackStack(null).commit();
break;
case R.id.tvAgreementDetails:
sfm.saveCurFragment(ServerAPI.AGREEMENT_DETAILS, 0);
ft.replace(android.R.id.content, new AgreementDetailsFragment(), ServerAPI.AGREEMENT_DETAILS).addToBackStack(null).commit();
break;
case R.id.bApply:
break;
}
#Override
public void onUpdateData() {
Log.d(TAG, "Update data");
}
}
DialogFragment:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle args = getArguments();
...
}
public Dialog onCreateDialog(Bundle savedInstanceState) {
...
return createDialog(v, R.string.for_how_long, etHowMuch, etForHowLong, etPromotionCode);
}
return null;
}
private Dialog createDialog(View view, int titleResID, final EditText howMuchField, final EditText forHowLongField, final EditText promotionCodeField) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(titleResID);
builder.setView(view);
builder.setPositiveButton(R.string.set, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
doShowProgress();
}
private void doShowProgress() {
ExecuteServerTaskBackground task = new
ExecuteServerTaskBackground(getActivity());
task.action = ServerAPI.GET_TERMS_AND_CONDITIONS;
onTaskListener listener = new onTaskListener() {
#Override
public void onUpdateData() {
Log.d(TAG, "Updaaate");
}
};
task.setListener(listener);
task.args = args;
task.execute();
}
}).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
return builder.create();
}
AsyncTask:
onTaskListener mListener;
public interface onTaskListener {
void onUpdateData();
}
public void setListener(onTaskListener listener){
mListener = listener;
}
public ExecuteServerTaskBackground(Activity activity) {
this.mActivity = activity;
this.mContext = activity.getApplicationContext();
}
#Override
protected void onPreExecute() {
pb = (ProgressBar) mActivity.findViewById(R.id.progressBar1);
pb.setVisibility(View.VISIBLE);
}
#Override
protected Void doInBackground(Void... params) {
ServerAPI server = new ServerAPI(mContext);
if (!args.isEmpty())
server.serverRequest(action, args);
else
server.serverRequest(action, null);
return null;
}
#Override
protected void onPostExecute(Void result) {
mListener.onUpdateData();
//There is I just update view but how to update whole variables throughtout callback?
// tvNoOfPayments = (TextView) mActivity.findViewById(R.id.tvNoOfPaymentsValue);
// tvFirstPayment = (TextView) mActivity.findViewById(R.id.tvFirstPaymentValue);
// tvTotalRepayable = (TextView) mActivity.findViewById(R.id.tvTotalRepayableValue);
//
// lvPayments = (ListView) mActivity.findViewById(R.id.lvData);
//
// termsConditionsM = new TermsAndConditionsManager(mContext);
//
// termsAndConditions = termsConditionsM.getTermsAndConditions();
//
// int totalPayments = Integer.valueOf(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
//
// if (totalPayments > 0) {
// if (termsAndConditions != null) {
// tvNoOfPayments.setText(termsAndConditions.get(ServerAPI.NO_OF_PAYMENTS));
// tvFirstPayment.setText(termsAndConditions.get(ServerAPI.FIRST_PAYMENT_DATE));
// tvTotalRepayable.setText("£" + termsAndConditions.get(ServerAPI.TOTAL_REPAYABLE));
// }
//
// paymentsData = termsConditionsM.getpayments();
//
// if (paymentsData != null) {
// Log.d(TAG, paymentsData.toString());
//
// payments = new ArrayList<Payment>();
//
// for (int i = 1; i <= totalPayments; i++) {
// paymentValues = new Payment();
// paymentValues.setPaymentID(Integer.valueOf(paymentsData.get(ServerAPI.PAYMENT_NO + "_" + i)));
// paymentValues.setPaymentDate(paymentsData.get(ServerAPI.PAYMENT_DATE + "_" + i));
// paymentValues.setPaymentTotalAmount(paymentsData.get(ServerAPI.PAYMENT_TOTAL + "_" + i));
// payments.add(paymentValues);
// }
//
// PaymentAdapter adapter = new PaymentAdapter(mContext, R.layout.custom_loan_item, payments);
// lvPayments.setAdapter(adapter);
// }
//
}
pb.setVisibility(View.GONE);
super.onPostExecute(result);
}
Without taking your code in consideration I will post the most essential to make a functional callback.
TestFragment:
public class TestFragment extends Fragment {
/* Skipping most code and I will only show you the most essential. */
private void methodThatStartsTheAsyncTask() {
TestAsyncTask testAsyncTask = new TestAsyncTask(new FragmentCallback() {
#Override
public void onTaskDone() {
methodThatDoesSomethingWhenTaskIsDone();
}
});
testAsyncTask.execute();
}
private void methodThatDoesSomethingWhenTaskIsDone() {
/* Magic! */
}
public interface FragmentCallback {
public void onTaskDone();
}
}
TestAsyncTask:
public class TestAsyncTask extends AsyncTask<Void, Void, Void> {
private FragmentCallback mFragmentCallback;
public TestAsyncTask(FragmentCallback fragmentCallback) {
mFragmentCallback = fragmentCallback;
}
#Override
protected Void doInBackground(Void... params) {
/* Do your thing. */
return null;
}
#Override
protected void onPostExecute(Void result) {
mFragmentCallback.onTaskDone();
}
}