[FIXED] App crashed after passing ListView position int to new activity

Issue

I am trying to pass the ListView postion that is being clicked to a new activity. When I run the app without trying to use the int in the next activity for instance trying to show it in a Toast message the app doesn't crash. But when I try and use the position integer to try and see if it works the app crashes.

Here is the code where I am passing the value:

package com.example.shashank.fffffffffffffffffffffffffff;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.RecyclerView;

import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

public class HomeActivity extends AppCompatActivity {


    ListView flightList;

    ArrayAdapter customArrayAdapter;

    int intValue;



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

        flightList = findViewById(R.id.flightList);


        DBHelper dbHelper = new DBHelper(HomeActivity.this);
        List<FlightsModel> everyone = dbHelper.getEveryone();

        ArrayAdapter flightArrayAdapter = new ArrayAdapter<FlightsModel>(HomeActivity.this, android.R.layout.simple_list_item_1, everyone);
        flightList.setAdapter(flightArrayAdapter);

        flightList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {

                intValue = position;


                Intent intent = new Intent(HomeActivity.this, BookingActivity.class);

                intent.putExtra("intVariableName", intValue);

                startActivity(intent);
            }
        });


    }

}

And here is the activity receiving the value:

package com.example.shashank.fffffffffffffffffffffffffff;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class BookingActivity extends AppCompatActivity {


    TextView textView;


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

        textView = findViewById(R.id.textView);



        Intent mIntent = getIntent();
        int intValue = mIntent.getIntExtra("intVariableName", 0);
        Toast.makeText(BookingActivity.this, "hello", Toast.LENGTH_SHORT).show();

        textView.setText(intValue);


    }


}

and here is the Logcat:

2021-11-24 21:41:18.053 11761-11761/com.example.shashank.fffffffffffffffffffffffffff W/System: ClassLoader referenced unknown path: /data/app/com.example.shashank.fffffffffffffffffffffffffff-2/lib/x86
2021-11-24 21:41:18.022 11761-11761/? I/art: Late-enabling -Xcheck:jni
2021-11-24 21:41:18.022 11761-11761/? W/art: Unexpected CPU variant for X86 using defaults: x86
    Process: com.example.shashank.fffffffffffffffffffffffffff, PID: 9870
2021-11-24 21:41:18.022 11761-11761/? I/art: Late-enabling -Xcheck:jni
2021-11-24 21:41:18.022 11761-11761/? W/art: Unexpected CPU variant for X86 using defaults: x86
2021-11-24 21:41:18.022 11761-11761/? I/art: Late-enabling -Xcheck:jni
2021-11-24 21:41:18.022 11761-11761/? W/art: Unexpected CPU variant for X86 using defaults: x86
2021-11-24 21:41:18.248 11761-11776/com.example.shashank.fffffffffffffffffffffffffff I/OpenGLRenderer: Initialized EGL, version 1.4
2021-11-24 21:41:18.249 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/OpenGLRenderer: Swap behavior 1
2021-11-24 21:41:18.249 11761-11776/com.example.shashank.fffffffffffffffffffffffffff W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
2021-11-24 21:41:18.249 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/OpenGLRenderer: Swap behavior 0
2021-11-24 21:41:18.260 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglCreateContext: 0xb4405360: maj 2 min 0 rcv 2
2021-11-24 21:41:18.293 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:18.316 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:20.575 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:20.583 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:20.602 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:20.612 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:20.613 11761-11761/com.example.shashank.fffffffffffffffffffffffffff W/IInputConnectionWrapper: finishComposingText on inactive InputConnection
2021-11-24 21:41:20.617 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:20.621 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/OpenGLRenderer: endAllActiveAnimators on 0x9738af80 (RippleDrawable) with handle 0x97371140
2021-11-24 21:41:21.095 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:23.062 11761-11761/com.example.shashank.fffffffffffffffffffffffffff W/IInputConnectionWrapper: finishComposingText on inactive InputConnection
2021-11-24 21:41:25.655 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:25.683 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:25.895 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:25.912 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:25.921 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/EGL_emulation: eglMakeCurrent: 0xb4405360: ver 2 0 (tinfo 0xb4403200)
2021-11-24 21:41:25.926 11761-11761/com.example.shashank.fffffffffffffffffffffffffff W/IInputConnectionWrapper: finishComposingText on inactive InputConnection
2021-11-24 21:41:25.933 11761-11776/com.example.shashank.fffffffffffffffffffffffffff D/OpenGLRenderer: endAllActiveAnimators on 0x96f66f80 (RippleDrawable) with handle 0x97371180
2021-11-24 21:41:32.579 11761-11764/com.example.shashank.fffffffffffffffffffffffffff I/art: Do partial code cache collection, code=24KB, data=30KB
2021-11-24 21:41:32.580 11761-11761/com.example.shashank.fffffffffffffffffffffffffff W/ResourceType: No package identifier when getting value for resource number 0x00000002
2021-11-24 21:41:32.581 11761-11761/com.example.shashank.fffffffffffffffffffffffffff D/AndroidRuntime: Shutting down VM
2021-11-24 21:41:32.581 11761-11761/com.example.shashank.fffffffffffffffffffffffffff E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.shashank.fffffffffffffffffffffffffff, PID: 11761
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.shashank.fffffffffffffffffffffffffff/com.example.shashank.fffffffffffffffffffffffffff.BookingActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x2
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:154)
        at android.app.ActivityThread.main(ActivityThread.java:6077)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
     Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x2
        at android.content.res.Resources.getText(Resources.java:331)
        at android.widget.TextView.setText(TextView.java:4554)
        at com.example.shashank.fffffffffffffffffffffffffff.BookingActivity.onCreate(BookingActivity.java:29)
        at android.app.Activity.performCreate(Activity.java:6662)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
        at android.app.ActivityThread.-wrap12(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:154) 
        at android.app.ActivityThread.main(ActivityThread.java:6077) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756) 
2021-11-24 21:41:32.582 11761-11764/com.example.shashank.fffffffffffffffffffffffffff I/art: After code cache collection, code=24KB, data=30KB
2021-11-24 21:41:32.582 11761-11764/com.example.shashank.fffffffffffffffffffffffffff I/art: Increasing code cache capacity to 128KB

Solution

When you set text to an int variable, Android assumes you want the xt resource with that id. And that id doesn't happen to exist. To print an int as a string, use ""+variable or Integer.toString(variable) to convert it to a string first.

Answered By - Gabe Sechan