android - How to resolve " java.lang.StackOverflowError: stack size 8MB "

Question

I am having problems in my Drawer. I am using fragments.If I try to run the "app keeps stopping" error appears.

In my DrawerItem.java

package com.example.papbiensaude;

import android.view.ViewGroup;

public abstract class DrawerItem<T extends  DrawerAdapter.ViewHolder> {

    protected boolean isChecked;
    public abstract T createViewHolder(ViewGroup parent);

    public abstract void bindViewHolder (T holder);

    public DrawerItem<T>setChecked(boolean isChecked){
        this.isChecked = isChecked;
        return this;
    }

    public boolean isChecked(){
        return isChecked();
    }

    public  boolean isSelectable(){
        return true;
    }
}

In my DrawerAdapter.java

package com.example.papbiensaude;

import android.util.SparseArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.HashMap;
import java.util.List;
import java.util.Map;


public class DrawerAdapter extends RecyclerView.Adapter<DrawerAdapter.ViewHolder> {

    private List<DrawerItem> items;
    private Map<Class<? extends DrawerItem>, Integer> viewTypes;
    private SparseArray<DrawerItem> holderFactories;

    private OnItemSelectedListener listener;

    public DrawerAdapter( List<DrawerItem> items){
        this.items = items ;
        this.viewTypes = new HashMap<>();
        this.holderFactories = new SparseArray<>();
        processViewTypes();
    }

    private void processViewTypes() {
        int type = 0;
        for (DrawerItem item : items){
            if(!viewTypes.containsKey(item.getClass())){
                viewTypes.put(item.getClass(),type);
                holderFactories.put(type, item);
                type++;
            }
        }
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
       ViewHolder holder = holderFactories.get(viewType).createViewHolder(parent);
       holder.drawerAdapter = this;
        return holder;
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        items.get(position).bindViewHolder(holder);
    }

    @Override
    public int getItemCount() {
        return items.size();
    }

    @Override
    public int getItemViewType(int position){
        return viewTypes.get(items.get(position).getClass());
    }

    public void setSelected(int position){
        DrawerItem newChecked = items.get(position);
        if (!newChecked.isSelectable()){
            return;
        }

        for (int i=0; i<items.size(); i++){
             DrawerItem item = items.get(i);
             if (item.isChecked()){
                 item.setChecked(false);
                 notifyItemChanged(i);
                 break;
             }
        }

        newChecked.setChecked(true);
        notifyItemChanged(position);

        if (listener != null){
            listener.onItemSelected(position);
        }
    }

    public void setListener(OnItemSelectedListener listener){
        this.listener = listener;
    }

    public interface OnItemSelectedListener{
        void onItemSelected(int position);
    }


    static abstract class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

        private  DrawerAdapter drawerAdapter;

        public ViewHolder (@NonNull View itemView){
            super(itemView);
            itemView.setOnClickListener(this);
        }

        public void onClick(View v){
            drawerAdapter.setSelected(getAdapterPosition());
        }
    }
}

In my PricipalActivity.java

package com.example.papbiensaude;

import androidx.annotation.ColorInt;
import androidx.annotation.ColorRes;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.FragmentTransaction;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.WindowManager;

import com.yarolegovich.slidingrootnav.SlidingRootNav;
import com.yarolegovich.slidingrootnav.SlidingRootNavBuilder;

import java.util.Arrays;

public class PrincipalActivity extends AppCompatActivity implements DrawerAdapter.OnItemSelectedListener{

    private static final int POS_CLOSE = 0;
    private static final int POS_DASHBOARD = 1;
    private static final int POS_MY_PROFILE = 2;
    private static final int POS_NEARBY_RES = 3;
    private static final int POS_SETTINGS = 4;
    private static final int POS_ABOUT_US = 5;
    private static final int POS_LOGOUT = 6;

    private String[] screenTitles;
    private Drawable[] screenIcons;

    private SlidingRootNav slidingRootNav;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_principal);

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        slidingRootNav = new SlidingRootNavBuilder(this)
            .withDragDistance(180)
            .withRootViewScale(0.75f)
            .withRootViewElevation(25)
            .withToolbarMenuToggle(toolbar)
            .withContentClickableWhenMenuOpened(false)
            .withSavedState(savedInstanceState)
            .withMenuLayout(R.layout.drawer_menu)
            .inject();

        screenIcons = loadScreensIcons();
        screenTitles = loadScreensTitles();

        DrawerAdapter adapter = new DrawerAdapter(Arrays.asList(
                createItemFor(POS_CLOSE),
                createItemFor(POS_DASHBOARD),
                createItemFor(POS_MY_PROFILE),
                createItemFor(POS_NEARBY_RES),
                createItemFor(POS_SETTINGS),
                createItemFor(POS_ABOUT_US),
                new SpaceItem(260),
                createItemFor(POS_LOGOUT)
        ));
        adapter.setListener(this);

        RecyclerView list = findViewById(R.id.drawer_list);
        list.setNestedScrollingEnabled(false);
        list.setLayoutManager(new LinearLayoutManager(this));
        list.setAdapter(adapter);

        adapter.setSelected(POS_DASHBOARD);

    }

    private DrawerItem createItemFor(int position){
        return new SimpleItem(screenIcons[position],screenTitles[position])
                .withIconTint(color(R.color.themeColor))
                .withTextTint(color(R.color.black))
                .withSelectedIconTint(color(R.color.themeColor))
                .withSelectedTextTint(color(R.color.themeColor));
    }

    @ColorInt
    private int color (@ColorRes int res){
        return ContextCompat.getColor(this,res);
    }

    private String[] loadScreensTitles() {
        return  getResources().getStringArray(R.array.id_activityScreenTitles);
    }

    private Drawable[] loadScreensIcons() {
        TypedArray ta = getResources().obtainTypedArray(R.array.id_activityScreenIcons);
        Drawable[] icons = new Drawable[ta.length()];
        for (int i = 0; i < ta.length(); i++){
            int id = ta.getResourceId(i,0);
            if (id!=0){
                icons[i] = ContextCompat.getDrawable(this,id);
            }
        }
        ta.recycle();
        return icons;
    }

    @Override
    public void onItemSelected(int position) {
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

        if (position == POS_DASHBOARD){
            DashBoardFragment dashBoardFragment = new DashBoardFragment();
            transaction.replace(R.id.container, dashBoardFragment);
        }
        else if (position == POS_MY_PROFILE){
            MyProfileFragment myProfileFragment = new MyProfileFragment();
            transaction.replace(R.id.container, myProfileFragment);
        }
        else if (position == POS_LOGOUT){
            finish();
        }

        slidingRootNav.closeMenu();
        transaction.addToBackStack(null);
        transaction.commit();
    }
}

MY LOGCAT RUTURN THIS ERRORS: E/AndroidRuntime: FATAL EXCEPTION: main

java.lang.StackOverflowError: stack size 8MB
        at com.example.papbiensaude.DrawerItem.isChecked(DrawerItem.java:18)
       
     
2021-02-04 14:46:13.910 11640-11640/com.example.papbiensaude E/AndroidRuntime:     at com.example.papbiensaude.DrawerItem.isChecked(DrawerItem.java:18)
        at com.example.papbiensaude.DrawerItem.isChecked(DrawerItem.java:18)
        at com.example.papbiensaude.DrawerAdapter.setSelected(DrawerAdapter.java:73)
        at com.example.papbiensaude.PrincipalActivity.onCreate(PrincipalActivity.java:77)
        at android.app.Activity.performCreate(Activity.java:7136)
        at android.app.Activity.performCreate(Activity.java:7127)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

I still don't understand where the error is and how to recover it!

question from:https://stackoverflow.com/questions/66049420/how-to-resolve-java-lang-stackoverflowerror-stack-size-8mb

Answer 1

Waitting for answers