HTML Not Showing in Webview

HTML Not Showing in Webview - android

I am trying to display some HTML in a webview within a fragment and it is not showing up. I used the same code in a different application and it works but it's not working in this case. I am at a loss. I'm not getting any errors, the HTML is just not displayed. I can see that the webview is appearing. The following is my fragment, layout file, and activity utilizing the fragment.
package com.siemens.google_glass_ict21_app.wirefragments;
import android.graphics.Color;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.TextView;
import com.siemens.google_glass_ict21_app.R;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Base64;
import java.util.Scanner;
/**
* A simple {#link Fragment} subclass.
* Use the {#link GrommetFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class GrommetFragment extends BaseWireFragment {
private static final String TITLE_KEY = "title_key";
private static final String DESCRIPTION_KEY = "description_key";
private static final String WEBVIEW_KEY = "webview_key";
public static GrommetFragment newInstance(String title, String description, String webView) {
GrommetFragment fragment = new GrommetFragment();
Bundle args = new Bundle();
args.putString(TITLE_KEY, title);
args.putString(DESCRIPTION_KEY, description);
args.putString(WEBVIEW_KEY, webView);
fragment.setArguments(args);
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.grommet_fragment, container, false);
if(getArguments() != null){
final TextView textView = view.findViewById(R.id.textView3);
textView.setText(getArguments().getString(TITLE_KEY,""));
final TextView description = view.findViewById(R.id.textView2);
description.setText(getArguments().getString(DESCRIPTION_KEY, ""));
WebView webView = (WebView) view.findViewById(R.id.webview);
String unencodedHtml = getArguments().getString(WEBVIEW_KEY, "");
String encodedHtml = Base64.getEncoder().encodeToString(unencodedHtml.getBytes());
webView.loadData(encodedHtml, "text/html", "base64");
webView.setBackgroundColor(Color.TRANSPARENT);
}
// Inflate the layout for this fragment
return view;
}
}
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".wirefragments.GrommetFragment">
<WebView
android:id="#+id/webview"
android:layout_width="640dp"
android:layout_height="296dp"
android:layout_gravity="bottom"
android:layout_marginTop="8dp" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="640dp"
android:layout_height="67dp"
android:orientation="horizontal">
<TextView
android:id="#+id/textView3"
android:layout_width="200dp"
android:layout_height="63dp"
android:layout_weight="0"
android:gravity="center"
android:text="TextView"
android:textAlignment="center"
android:textSize="30sp" />
<TextView
android:id="#+id/textView2"
android:layout_width="150dp"
android:layout_height="63dp"
android:layout_weight="1"
android:gravity="center"
android:text="TextView"
android:textAlignment="center"
android:textSize="30sp" />
</LinearLayout>
</FrameLayout>
package com.siemens.google_glass_ict21_app.activity;
import android.os.Bundle;
import android.util.Log;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentStatePagerAdapter;
import androidx.viewpager.widget.ViewPager;
import com.google.android.material.tabs.TabLayout;
import com.siemens.google_glass_ict21_app.R;
import com.siemens.google_glass_ict21_app.ui.BaseActivity;
import com.siemens.glass.ui.GlassGestureDetector;
import com.siemens.google_glass_ict21_app.wirefragments.BaseWireFragment;
import com.siemens.google_glass_ict21_app.wirefragments.GrommetFragment;
import com.siemens.google_glass_ict21_app.wirefragments.LocateConnectorFragment;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
public class TemporaryPlaceHolderCardsActivity extends BaseActivity {
private List<BaseWireFragment> wireCards = new ArrayList<>();
private ViewPager viewPager;
final ScreenSlidePagerAdapter screenSlidePagerAdapter = new ScreenSlidePagerAdapter(
getSupportFragmentManager());
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_pager_layout);
viewPager = findViewById(R.id.viewPager);
viewPager.setAdapter(screenSlidePagerAdapter);
wireCards.add(GrommetFragment.newInstance("Grommet:", "xyz", "<a href='https://svgshare.com/s/YLZ' ><img src='https://svgshare.com/i/YLZ.svg' title='' /></a>"));
//wireCards.add(LocateConnectorFragment.newInstance("Grommet:", "<a href='https://svgshare.com/s/Z8d' ><img src='https://svgshare.com/i/Z8d.svg' title='' /></a>", "<a href='https://svgshare.com/s/Z8d' ><img src='https://svgshare.com/i/Z8d.svg' title='' /></a>"));
screenSlidePagerAdapter.notifyDataSetChanged();
final TabLayout tabLayout = findViewById(R.id.page_indicator);
tabLayout.setupWithViewPager(viewPager, true);
}
private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
ScreenSlidePagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
return wireCards.get(position);
}
#Override
public int getCount() {
return wireCards.size();
}
}
#Override
public boolean onGesture(GlassGestureDetector.Gesture gesture) {
switch (gesture) {
case TAP:
return true;
case TWO_FINGER_SWIPE_DOWN:
finish();
case SWIPE_DOWN:
return true;
default:
return super.onGesture(gesture);
}
}
}

Related

ViewPager2 main activit toolabar is not working

i want to press my custom toolbar button in view activity but i can't do it
how can i bring my custom toolbar on ViewActivity?
pls help me
here is my activity_view
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appbarLayout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:elevation="0dp"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.Toolbar
android:id="#+id/alarmToolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="center"
app:contentInsetStart="0dp"
app:menu="#menu/alarm_title">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="미운 오리 새끼"
android:fontFamily="#font/applesdgothicneoeb"
android:textColor="#color/black"
android:textSize="25sp" />
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager2.widget.ViewPager2
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
here is my ViewActivity
package com.example.test;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.viewpager2.adapter.FragmentStateAdapter;
import androidx.viewpager2.widget.ViewPager2;
import java.util.ArrayList;
import java.util.List;
public class ViewActivity extends AppCompatActivity {
private ViewPager2 pager;
private FragmentStateAdapter pagerAdapter;
private ZoomOutPageTransformer pageTransformer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view);
Toolbar toolbar = findViewById(R.id.alarmToolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
List<Fragment> fragments = new ArrayList<>();
fragments.add(new Duck1Fragment());
fragments.add(new Duck2Fragment());
fragments.add(new Duck3Fragment());
pager = findViewById(R.id.pager);
pagerAdapter = new PagerAdapter(this, fragments);
pager.setAdapter(pagerAdapter);
pager.setPageTransformer(pageTransformer);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.alarm_title, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.close:
finish();
return true;
default:
return super .onOptionsItemSelected(item);
}
}
}
here is my Duck1Activity
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" >
<ImageView
android:id="#+id/imageView"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_marginTop="70dp"
android:src="#drawable/tale_character"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<FrameLayout
android:id="#+id/frameLayout"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_marginTop="150dp"
android:background="#drawable/background"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.495"
app:layout_constraintStart_toStartOf="parent"
tools:layout_editor_absoluteY="161dp"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="#+id/ducktale_image"
android:layout_width="275dp"
android:layout_height="275dp"
android:layout_gravity="center"
tools:srcCompat="#tools:sample/avatars" />
</FrameLayout>
<FrameLayout
android:layout_width="300dp"
android:layout_height="175dp"
android:layout_marginBottom="50dp"
android:background="#drawable/background"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.495"
app:layout_constraintStart_toStartOf="parent">
<TextView
android:id="#+id/duck_tale"
android:layout_width="275dp"
android:layout_height="150dp"
android:scrollbars="vertical"
android:layout_gravity="center"
android:fontFamily="#font/applesdgothicneoeb"
android:text="안녕하세요 이것은 테스트입니다."
android:textAlignment="center"
android:textSize="25sp" />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
here is my duckFragment
package com.example.test;
import static android.speech.tts.TextToSpeech.ERROR;
import android.content.Context;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.text.method.ScrollingMovementMethod;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toolbar;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import java.util.Locale;
public class Duck1Fragment extends Fragment {
private TextToSpeech tts;
private TextView duck;
Context ct;
public Duck1Fragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_duck1, container, false);
ct = getActivity().getApplication();
ImageView duck_image = (ImageView) rootView.findViewById(R.id.ducktale_image);
TextView duck = (TextView) rootView.findViewById(R.id.duck_tale);
duck.setText(
);
duck.setMovementMethod(new ScrollingMovementMethod());
tts = new TextToSpeech(ct, new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if(status != ERROR) {
tts.setLanguage(Locale.KOREAN);
}
}
});
duck_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
tts.setSpeechRate(1.0f);
tts.speak(duck.getText().toString(), TextToSpeech.QUEUE_FLUSH, null);
}
});
return rootView;
}
}
here is my PageAdapter
package com.example.test;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.viewpager2.adapter.FragmentStateAdapter;
import java.util.List;
public class PagerAdapter extends FragmentStateAdapter {
private List<Fragment> fragments;
private static final int NUM_PAGES = 3;
public PagerAdapter(FragmentActivity fragmentActivity, List<Fragment> fragments) {
super(fragmentActivity);
this.fragments = fragments;
}
#NonNull
#Override
public Fragment createFragment(int position) { [tag:tag-name]
if (position == 0) return new Duck1Fragment();
else if (position == 1) return new Duck2Fragment();
else return new Duck3Fragment();
}
#Override
public int getItemCount() {
return NUM_PAGES;
}
}
i want to press my custom button on toolbar..
so u guys can help me?
i serched for google and chatgpt but i cant solve it

firebaseRecyclerAdapter gets filled, yet wont show anything in a dialog - Android Studio

So, I tried putting a recyclerView in a "popup" dialog using a firebaseRecyclerAdapter.
My problem is, that I know for sure the adapter gets filled because I was using the Logcat to tell me when it adds another "user" to the adapter, but it wont show anything in the recyclerview in the dialog.
I'm having this problem for a couple of days and couldn't find an answer yet, glad if you could help me :)
I'm using a main screen which changes fragments, and from a certain fragment I'm calling this specific dialog.
These are my files:
UserViewHolder - the class which holds the "sets" for the cardview:
public static class UserViewHolder extends RecyclerView.ViewHolder
{
View mView;
public UserViewHolder(View itemView)
{
super(itemView);
mView=itemView;
}
public void setName(String name)
{
TextView teacherName=(TextView) mView.findViewById(R.id.txtNameTea);
teacherName.setText(name);
}
public void setEmail(String email)
{
TextView txtEmailTea=(TextView) mView.findViewById(R.id.txtEmailTea);
txtEmailTea.setText(email);
}
public void setImage(final Context ctx, Uri imageUri, User cUser)
{
final ImageView imgProfileTea=(ImageView) mView.findViewById(R.id.imgProfileTea);
Picasso.with(ctx).load(cUser.getImageUri()).into(imgProfileTea);
if(imgProfileTea.getDrawable()==null) {
StorageReference load = FirebaseStorage.getInstance().getReference().child("usersProfilePic/" + cUser.getImageName());
load.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri uri) {
Picasso.with(ctx).load(uri.toString()).into(imgProfileTea);
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(ctx, e.getMessage(), Toast.LENGTH_LONG);
}
});
}
}
}
Schedules - the fragment which calls the dialog from its toolbar:
package com.example.android.aln4;
import android.app.ActionBar;
import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.github.sundeepk.compactcalendarview.CompactCalendarView;
import com.github.sundeepk.compactcalendarview.domain.Event;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.storage.FirebaseStorage;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import static com.example.android.aln4.LoginActivity.myUser;
import static com.example.android.aln4.dataBase.mDatabaseReference;
import static com.example.android.aln4.dataBase.mFirebaseDatabase;
import static com.example.android.aln4.dataBase.mStorageRef;
import static com.example.android.aln4.navDrawerMain.firebaseRecyclerAdapter;
import static java.lang.System.in;
import static com.example.android.aln4.navDrawerMain.studentsQuery;
public class Schedules extends Fragment {
private Toolbar ScheduleToolbar;
private Button addEvent;
//private TextView txt;
private RecyclerView mRecyclerViewStudentEvent;
private CompactCalendarView compactCalendar;
private SimpleDateFormat dateFormatMonth = new SimpleDateFormat("MMMM-yyyy", Locale.getDefault());
private String[] monthName = {"January", "February", "March", "April", "May", "June", "July",
"August", "September", "October", "November", "December"};
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.addEvent:
final AlertDialog.Builder mBuilder = new AlertDialog.Builder(getContext());
View mView = getLayoutInflater().inflate(R.layout.dialog_event_creation, null);
mRecyclerViewStudentEvent = (RecyclerView) mView.findViewById(R.id.mRecyclerViewStudentEvent);
mRecyclerViewStudentEvent.setHasFixedSize(true);
mRecyclerViewStudentEvent.setLayoutManager(new LinearLayoutManager(getContext()));
setStudentsList();
mView = getLayoutInflater().inflate(R.layout.dialog_event_creation, null);
final EditText edtEventTitle = (EditText) mView.findViewById(R.id.edtEventTitle);
final TextView txtEventStartTime = (TextView) mView.findViewById(R.id.txtEventStartTime);
final TextView txtEventEndTime = (TextView) mView.findViewById(R.id.txtEventEndTime);
final EditText edtEventLocation = (EditText) mView.findViewById(R.id.edtEventLocation);
Button btnOfferEvent = (Button) mView.findViewById(R.id.btnOfferEvent);
mBuilder.setView(mView);
final AlertDialog dialog = mBuilder.create();
btnOfferEvent.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Calendar startTime = Calendar.getInstance();
Calendar endTime = Calendar.getInstance();
int startHour = Integer.parseInt(txtEventStartTime.getText().toString().substring(0, 2));
int startMinute = Integer.parseInt(txtEventStartTime.getText().toString().substring(3, 5));
startTime.set(Calendar.HOUR_OF_DAY, startHour);
startTime.set(Calendar.MINUTE, startMinute);
int endHour = Integer.parseInt(txtEventEndTime.getText().toString().substring(0, 2));
int endMinute = Integer.parseInt(txtEventEndTime.getText().toString().substring(3, 5));
endTime.set(Calendar.HOUR_OF_DAY, endHour);
endTime.set(Calendar.MINUTE, endMinute);
String mId =/*dataSelected+*/ String.valueOf(startHour) + String.valueOf(startMinute);//+selectedUserID
EventCreation newEvent = new EventCreation(mId, startTime, endTime, edtEventTitle.getText().toString(), edtEventLocation.getText().toString(), R.color.colorPrimary);
dialog.dismiss();
}
});
dialog.show();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setHasOptionsMenu(true);
ScheduleToolbar = (Toolbar) getView().findViewById(R.id.schedule_toolbar);
// Setting toolbar as the ActionBar with setSupportActionBar() call
((AppCompatActivity) getActivity()).setSupportActionBar(ScheduleToolbar);
mFirebaseDatabase = FirebaseDatabase.getInstance();
mDatabaseReference = mFirebaseDatabase.getReference("users");
mStorageRef = FirebaseStorage.getInstance().getReference();
Calendar cal = Calendar.getInstance();
String month = monthName[cal.get(Calendar.MONTH)];
int year = cal.get(Calendar.YEAR);
getActivity().setTitle(month + "-" + year);
compactCalendar = (CompactCalendarView) getView().findViewById(R.id.compactcalendar_view);
compactCalendar.setUseThreeLetterAbbreviation(true);
long millis = System.currentTimeMillis() % 1000;
Event ev1 = new Event(Color.RED, millis, "First try");
compactCalendar.addEvent(ev1);
compactCalendar.setListener(new CompactCalendarView.CompactCalendarViewListener() {
#Override
public void onDayClick(Date dateClicked) {
//put events into scroll view adapter
}
#Override
public void onMonthScroll(Date firstDayOfNewMonth) {
getActivity().setTitle(dateFormatMonth.format(firstDayOfNewMonth));
}
});
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.schedules, container, false);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_main, menu);
}
private void setStudentsList() {
studentsQuery=mDatabaseReference.orderByChild("teacherNum").equalTo(myUser.getTeacherNum());
firebaseRecyclerAdapter=new FirebaseRecyclerAdapter<User, navDrawerMain.UserViewHolder>(
User.class,R.layout.card_view_teacher,navDrawerMain.UserViewHolder.class,studentsQuery) {
#Override
protected void populateViewHolder(navDrawerMain.UserViewHolder viewHolder, User model, int position) {
viewHolder.setName(model.getFirstName() + " " + model.getLastName());
viewHolder.setEmail(model.getEmail());
viewHolder.setImage(getContext(), Uri.parse(model.getImageUri()), model);
}
};
mRecyclerViewStudentEvent.setAdapter(firebaseRecyclerAdapter);
}
}
The dialog xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="50dp"
android:layout_height="20dp"
android:layout_alignParentRight="true"
android:layout_marginTop="20dp"
android:src="#mipmap/title"/>
<EditText
android:id="#+id/edtEventTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="כותרת"
android:layout_marginRight="50dp"/>
<android.support.v7.widget.RecyclerView
android:layout_marginTop="50dp"
android:id="#+id/mRecyclerViewStudentEvent"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginTop="20dp"
android:orientation="vertical">
<ImageView
android:layout_width="50dp"
android:layout_height="20dp"
android:layout_alignParentRight="true"
android:layout_marginTop="20dp"
android:src="#mipmap/clock"/>
<TextView
android:layout_width="wrap_content"
android:layout_marginRight="50dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="שעת התחלה"
android:textSize="20dp" />
<TextView
android:id="#+id/txtEventStartTime"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="5dp"
android:layout_marginRight="50dp"
android:layout_marginTop="5dp"
android:text="21:00" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="25dp"
android:layout_marginRight="50dp"
android:background="#color/darkgray" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="50dp"
android:layout_alignParentRight="true"
android:layout_marginTop="26dp"
android:text="שעת סיום"
android:textSize="20dp" />
<TextView
android:id="#+id/txtEventEndTime"
android:layout_width="match_parent"
android:layout_marginRight="50dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="5dp"
android:layout_marginTop="30dp"
android:text="21:45" />
</RelativeLayout>
<RelativeLayout
android:layout_marginTop="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="50dp"
android:layout_height="20dp"
android:layout_alignParentRight="true"
android:layout_marginTop="20dp"
android:src="#mipmap/location"/>
<EditText
android:id="#+id/edtEventLocation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="מיקום תחילת השיעור"
android:layout_marginRight="50dp"/>
</RelativeLayout>
<Button
android:id="#+id/btnOfferEvent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="100dp"
android:layout_gravity="center_horizontal"
android:text="הצע שיעור"/>
</LinearLayout>
One more thing is that I know is that I'm already able to bring up users into the recyclerView in other fragments.. Here's the code in another fragment:
package com.example.android.aln4;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.storage.FirebaseStorage;
import static com.example.android.aln4.dataBase.mDatabaseReference;
import static com.example.android.aln4.dataBase.mFirebaseDatabase;
import static com.example.android.aln4.dataBase.mStorageRef;
import static com.example.android.aln4.navDrawerMain.firebaseRecyclerAdapter;
import static com.example.android.aln4.navDrawerMain.teachersQuery;
public class TeachersList extends Fragment {
private RecyclerView mRecyclerViewTeacher;
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
getActivity().setTitle("מורים");
mFirebaseDatabase = FirebaseDatabase.getInstance();
mDatabaseReference = mFirebaseDatabase.getReference("users");
mStorageRef = FirebaseStorage.getInstance().getReference();
mRecyclerViewTeacher=(RecyclerView) getView().findViewById(R.id.mRecyclerViewTeacher);
mRecyclerViewTeacher.setHasFixedSize(true);
mRecyclerViewTeacher.setLayoutManager(new LinearLayoutManager(getContext()));
setTeachersList();
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.teachers_list_frag,container,false);
}
private void setTeachersList() {
teachersQuery=mDatabaseReference.orderByChild("type").equalTo("Teacher");
firebaseRecyclerAdapter=new FirebaseRecyclerAdapter<User, navDrawerMain.UserViewHolder>(
User.class,R.layout.card_view_teacher,navDrawerMain.UserViewHolder.class,teachersQuery) {
#Override
protected void populateViewHolder(navDrawerMain.UserViewHolder viewHolder, User model, int position) {
viewHolder.setName(model.getFirstName()+" "+model.getLastName());
viewHolder.setEmail(model.getEmail());
viewHolder.setImage(getContext(), Uri.parse(model.getImageUri()),model);
}
};
mRecyclerViewTeacher.setAdapter(firebaseRecyclerAdapter);
}
}
and its xml file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/mRecyclerViewTeacher"
android:layout_marginTop="57dp"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
It's one of my first questions here so I apologize if I missed something :)
Any help would be appriciated.

Solved. All I did was regenerating the SHA1 in the firebase settings, and removing the setHasFixedSize line from Schedules activity and it worked just fine.

Image slider moving fast in android when comeback from another activity

In my android app I have an image slider using viewpager,which changes images every 2.5 seconds in the main activity,it works fine when I open the app,but the problem is when I jump to another Activity from the MainActivity and come back it,starts to move the images in the slides very fast,as much as I jump to another activity the sliding become more faster.please help.
This is where I have included my 3 slider images
slidelist.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="#+id/image1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:adjustViewBounds="true"
android:layout_gravity="center"
android:src="#drawable/slidetwo"
android:scaleType="centerCrop"/>
<ImageView
android:id="#+id/image2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:adjustViewBounds="true"
android:layout_gravity="center"
android:src="#drawable/slideone"
android:scaleType="centerCrop"/>
<ImageView
android:id="#+id/image3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:adjustViewBounds="true"
android:layout_gravity="center"
android:src="#drawable/slidethree"
android:scaleType="centerCrop"/>
</FrameLayout>
This the slider layout in content main.xml(included in activity)
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="250dp"
android:layout_below="#+id/linearone">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true" />
<me.relex.circleindicator.CircleIndicator
android:id="#+id/indicator"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
The following is the adpater class
import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.example.rimapps.icar_iisr_turmeric.R;
import java.util.ArrayList;
public class SlideAdapter extends PagerAdapter {
private ArrayList<Integer> images;
private LayoutInflater inflater;
private Context context;
public SlideAdapter(Context context, ArrayList<Integer> images) {
this.context = context;
this.images=images;
inflater = LayoutInflater.from(context);
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
#Override
public int getCount() {
return images.size();
}
#Override
public Object instantiateItem(ViewGroup view, int position) {
View myImageLayout = inflater.inflate(R.layout.slidelist, view, false);
ImageView myImage1 = (ImageView) myImageLayout.findViewById(R.id.image1);
ImageView myImage2 = (ImageView) myImageLayout.findViewById(R.id.image2);
ImageView myImage3 = (ImageView) myImageLayout.findViewById(R.id.image3);
myImage1.setImageResource(images.get(position));
myImage2.setImageResource(images.get(position));
myImage3.setImageResource(images.get(position));
view.addView(myImageLayout, 0);
return myImageLayout;
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view.equals(object);
}
}
This is my MainActivity class and here I have defined the timer for the slider
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.Handler;
import android.support.design.internal.NavigationMenuItemView;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import com.example.rimapps.icar_iisr_turmeric.R;
import com.example.rimapps.icar_iisr_turmeric.control.ButtonAdapter;
import com.example.rimapps.icar_iisr_turmeric.control.SlideAdapter;
import com.example.rimapps.icar_iisr_turmeric.model.ContentsDep;
import com.example.rimapps.icar_iisr_turmeric.utils.LocaleHelper;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import me.relex.circleindicator.CircleIndicator;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
CircleIndicator indicator;
int period=2500, delay = 2500;
private static ViewPager mPager;
private static int currentPage = 0;
private static final Integer[] slide = {R.drawable.slideone, R.drawable.slidetwo, R.drawable.slidethree};
private ArrayList<Integer> slidearray = new ArrayList<Integer>();
Timer swipeTimer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
//Image slider function//
private void init() {
for (int i = 0; i < slide.length; i++)
slidearray.add(slide[i]);
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(new SlideAdapter(MainActivity.this, slidearray));
CircleIndicator indicator = (CircleIndicator) findViewById(R.id.indicator);
indicator.setViewPager(mPager);
// Auto start of viewpager
final Handler handler = new Handler();
final Runnable Update = new Runnable() {
public void run() {
if (currentPage == slide.length) {
currentPage = 0;
}
mPager.setCurrentItem(currentPage++, true);
}
};
swipeTimer =new Timer();
swipeTimer.schedule(new
TimerTask() {
#Override
public void run () {
Log.d("hjgv","yughi");
handler.post(Update);
}
},delay,period);
}
#Override
protected void onStop() {
super.onStop();
// swipeTimer.cancel();
delay=0;
period=0;
}
#Override
protected void onRestart() {
super.onRestart();
delay=2500;
period=2500;
}
}

The problem is in your Timer.
when you go another fragment or activity then back to that fragment you must have to cancel your timer ondestroyview because when you back to fragment your oncreateview is call again so timer are initialise and then speed is multiple by 2 time.this happens everytime.
This code in kotlin.
override fun onDestroyView() {
if(swipeTimer != null) {
swipeTimer.cancel()
}
super.onDestroyView()
}
Hope this help you

Just call cancel the instance of Timer in your ondestryView() method
#Override
public void onDestroyView() {
super.onDestroyView();
if(swipeTimer != null) {
swipeTimer.cancel();
}
}

fragment stuck - can't go to previous fragment

I have a fragment(A) , where another fragment(B) is being opened . When I press back button it just refreshes the fragment(B) instead of exiting from it and returning to fragment A.
I tried poping back the fragment A in the Activity's onBackPressed callback method but it didn't change a thing :
#Override
public void onBackPressed() {
if(B.active)
{
mFragmentManager.popBackStack( A.TAG , 0);
B.active = false;
}
}
** the active boolean is just something I added as part of the solution. It's initialized to TRUE once the fragment is instantiated.

I don't know how to commit a project!
package com.example.a;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import butterknife.ButterKnife;
import butterknife.InjectView;
/**
* Created by 77930 on 2015/11/9.
*/
public class ActivityA extends AppCompatActivity{
#InjectView(R.id.c)
LinearLayout c;
#InjectView(R.id.btn)
TextView btn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.c);
ButterKnife.inject(ActivityA.this);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.e, FragA.newInstance(), "A");
// fragmentTransaction.addToBackStack("A");
fragmentTransaction.commitAllowingStateLoss();
}
});
}
}
package com.example.a;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import butterknife.ButterKnife;
import butterknife.InjectView;
/**
* Created by 77930 on 2015/11/10.
*/
public class FragA extends Fragment{
private View rootView;
public static FragA newInstance() {
return new FragA();
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public FragA() {
}
#InjectView(R.id.a)
LinearLayout a;
#InjectView(R.id.btn)
TextView btn;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fraga,container,false);
ButterKnife.inject(this,rootView);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
FragmentTransaction fragmentTransaction = getActivity().getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.e, FragB.newInstance(), "B");
fragmentTransaction.addToBackStack("B");
fragmentTransaction.commitAllowingStateLoss();
}
});
return rootView;
}
}
package com.example.a;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import butterknife.ButterKnife;
import butterknife.InjectView;
/**
* Created by 77930 on 2015/11/10.
*/
public class FragB extends Fragment{
private View rootView;
public static FragB newInstance() {
return new FragB();
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public FragB() {
}
#InjectView(R.id.b)
LinearLayout b;
#InjectView(R.id.btn)
TextView btn;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragb,container,false);
ButterKnife.inject(this, rootView);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
getActivity().getSupportFragmentManager().popBackStackImmediate();
}
});
return rootView;
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:id="#+id/c"
android:background="#4b14b1"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/e"
android:layout_width="match_parent"
android:layout_height="300dp">
</FrameLayout>
<TextView
android:id="#+id/btn"
android:textColor="#ffffff"
android:textSize="100dp"
android:gravity="center"
android:text="c"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:id="#+id/a"
android:background="#4b14b1"
android:layout_height="match_parent">
<TextView
android:id="#+id/btn"
android:textColor="#ffffff"
android:textSize="100dp"
android:gravity="center"
android:text="A"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:id="#+id/b"
android:background="#4b14b1"
android:layout_height="match_parent">
<TextView
android:id="#+id/btn"
android:textColor="#ffffff"
android:textSize="100dp"
android:gravity="center"
android:text="B"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

Using DialogFragments. Are there bugs in the official example?

I have just copied the official example, and my dialog is very narrow. Why?
My code.
The dialog.
package com.redplanet;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager.LayoutParams;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;
public class EditNameDialog extends DialogFragment implements OnEditorActionListener {
public interface EditNameDialogListener {
void onFinishEditDialog(String inputText);
}
private EditText mEditText;
public EditNameDialog() {
// Empty constructor required for DialogFragment
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_edit_name, container);
mEditText = (EditText) view.findViewById(R.id.txt_your_name);
getDialog().setTitle("Hello");
// Show soft keyboard automatically
mEditText.requestFocus();
getDialog().getWindow().setSoftInputMode(
LayoutParams.SOFT_INPUT_STATE_VISIBLE);
mEditText.setOnEditorActionListener(this);
return view;
}
#Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (EditorInfo.IME_ACTION_DONE == actionId) {
// Return input text to activity
EditNameDialogListener activity = (EditNameDialogListener) getActivity();
activity.onFinishEditDialog(mEditText.getText().toString());
this.dismiss();
return true;
}
return false;
}
}
The activity.
package com.redplanet;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.view.Menu;
import android.widget.Toast;
import com.redplanet.EditNameDialog.EditNameDialogListener;
public class FragmentDialogDemo extends FragmentActivity implements EditNameDialogListener {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
showEditDialog();
}
private void showEditDialog() {
FragmentManager fm = getSupportFragmentManager();
EditNameDialog editNameDialog = new EditNameDialog();
editNameDialog.show(fm, "fragment_edit_name");
}
#Override
public void onFinishEditDialog(String inputText) {
Toast.makeText(this, "Hi, " + inputText, Toast.LENGTH_SHORT).show();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return super.onCreateOptionsMenu(menu);
}
}
Activity layout file.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:padding="#dimen/padding_medium"
android:text="#string/hello_world"
tools:context=".FragmentDialogDemo" />
</RelativeLayout>
Dialog layout file.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/edit_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/lbl_your_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Your name" />
<EditText
android:id="#+id/txt_your_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:imeOptions="actionDone"
android:inputType="text" />
</LinearLayout>

In order not to puzzle over workarounds, I'd prefer an AlertDialog to a DialogFragment. The issue I asked about was on Android 2.3.6 and wasn't on Android 4.1.2.

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

HTML Not Showing in Webview - android

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firebaseRecyclerAdapter gets filled, yet wont show anything in a dialog - Android Studio

Image slider moving fast in android when comeback from another activity

fragment stuck - can't go to previous fragment

Using DialogFragments. Are there bugs in the official example?

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