App Crashing When Trying to Use Recyclerview on Android 5.0

App crashing when trying to use RecyclerView on android 5.0

This issue usually occurs when no LayoutManager was provided for the RecyclerView. You can do it like so:

final LinearLayoutManager layoutManager = new LinearLayoutManager(context);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);

Why does my activity crash when trying to search recycler view?

Figured out how to fix error by another video and it is pretty much just a more simple Filter rewrite

Where I populate my recycler view all I did was add this

  while ((nyseLine = nyseReader.readNext()) != null){

                nyseSymbol = nyseLine[0];
                nyseFullName = nyseLine[1];

                stocksList.add(new StocksList(nyseSymbol, "", nyseFullName, null));

            }

            //I added this to set the adapter and show the list immediately after 
            //loading   
            adapter = new StocksListAdapter(stocksList);
            recyclerView.setAdapter(adapter);
            adapter.notifyDataSetChanged();

Then I crated this method in The SAME activity not in the adapter class

 private void Filter(String searched) {

        for (StocksList stock : stocksList ){
            if (stock.getSymbol().toLowerCase().equals(searched)){
                //created new array list for the filter       
                filteredList.add(stock);
            }
        }
        recyclerView.setAdapter(new StocksListAdapter(filteredList));
        adapter.notifyDataSetChanged();

    }

And this is the OnCreate class editText listener

 recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setHasFixedSize(true);

        searchStocks.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            //Moved the the stuff to afterTextChanged not onTextChanged        
            @Override
            public void afterTextChanged(Editable editable) {

                filteredList.clear();

                if (editable.toString().isEmpty()){
                    recyclerView.setAdapter(new StocksListAdapter(stocksList));
                    adapter.notifyDataSetChanged();
                } else {
                    Filter(editable.toString());
                }
            }
        });

I'm pretty sure the error was the fact that I set all the recycler view values like recyclerview.setAdapter(new StocksListAdapter(stocksList) in one method that I called once in the oncreate method
And when it needed to update the adapter with a new filtered list adapter.notifyDataSetChanged() was unreachable and didn't do anything.

And so inside the adapter class it was working with inconsistent lists back and forth thus crashing. This is only my guess though, and the comment from @shagberg really helped.

P.S anyone else having this problem in the future: check your notifyDataSetChanged() calls so they aren't after Filter calls or other data changing methods because if it's called in the wrong place it crashes.

RecyclerView crashes the application

Change

recView.findViewById(R.id.recView);

to

recView = findViewById(R.id.recView);

Also you have duplicated:

 setContentView(R.layout.activity_main);

You have to set the contentView before you try to find the views.

App crashing when trying to use RecyclerView With LayoutManager

As you mentioned you are using two reyclerView so please check your recyclerview Id is it there perfect recyclerview id or you are assign same id for both of the recyclerview .

Reference Code :

Reference : https://www.androidhive.info/2016/01/android-working-with-recycler-view/

call prepareToDOData(); inside setAdapters()

     private void setAdapters() {
        todosAdapter = new TodosAdapter(toDoList);
        RecyclerView.LayoutManager mLayoutManager1 = new LinearLayoutManager(getApplicationContext());
        rvTodos.setLayoutManager(mLayoutManager1);
        rvTodos.setItemAnimator(new DefaultItemAnimator());
        rvTodos.setAdapter(todosAdapter);

        prepareToDOData();//call here
    }

 private void prepareToDOData() {
        ToDo data = new ToDo("David Cummings", "26/10/2017 2:25PM");
        toDoList.add(data);

        data = new ToDo("Lawrence Cummings", "26/10/2017 2:25PM");
        toDoList.add(data);

        data = new ToDo("Ketul Inc.", "11/11/2017 3:46 PM");
        toDoList.add(data);

        //notesAdapter.notifyDataSetChanged();
        todosAdapter.notifyDataSetChanged();
    }

Firestore RecyclerView app's crashing when run

You need to update firebase dependencies to latest one. Add below lines to app level gradle. Remove all the version codes from all the dependencies as below -

You can follow the link Firebase

  implementation platform('com.google.firebase:firebase-bom:28.3.1')
  // When using the BoM, you don't specify versions in Firebase library 
  //dependencies

 // Declare the dependency for the Firebase SDK for Google Analytics
 implementation 'com.google.firebase:firebase-messaging'
 implementation 'com.google.firebase:firebase-auth'
 implementation 'com.google.firebase:firebase-core'
 implementation 'com.google.firebase:firebase-storage'
 implementation 'com.google.firebase:firebase-firestore'
 implementation 'com.firebaseui:firebase-ui-firestore' 

 implementation 'com.google.firebase:firebase-analytics'

Android RecyclerView crashing when loaded

You have to set a LayoutManager for the RecyclerView. For example, for a vertical scroll list, you should use LinearLayoutManager like this.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.app_drawer);

    recyclerView = findViewById(R.id.appsList);

    // add this
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    AppAdapter adapter = new AppAdapter(this);

    // replace this line by this two. (you should not call adapter method directly).
    // adapter.onCreateViewHolder(recyclerView, 0);        // LINE 23
    recyclerView.setAdapter(adapter);
    // notify the adapter that the data has changed 
    recyclerView.notifyDataSetChanged();
}

App crashes when using RecyclerView

This problem caused when android start dealing with bitmaps.
the main reason is lack of memory space and also, garbage collector cannot free some space.

You have two solutions for this situation:

1. largeHeap

Go to your manifest file and add

android:largeHeap="true"

android:hardwareAccelerated="false"

inside application tag for example

   <application
     android:allowBackup="true"
     android:hardwareAccelerated="false"
     android:largeHeap="true"
     android:icon="@mipmap/ic_launcher"
     android:label="@string/app_name"
     android:supportsRtl="true"
     android:theme="@style/AppTheme">

2. Using library like Universal Image Loader

https://github.com/nostra13/Android-Universal-Image-Loader

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