Class cast exception when extending ListActivity

Question

I am wondering why I am getting the following logcat when I run my app and try and click on the Daily Forecast option.

  Caused by: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.ListView

HERE IS MY DAILYFORECASTACTIVITY

package com.dredaydesigns.stormy.ui;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;

import com.dredaydesigns.stormy.R;
import com.dredaydesigns.stormy.adapters.DayAdapter;
import com.dredaydesigns.stormy.weather.Day;

import java.util.Arrays;

public class DailyForecastActivity extends ListActivity {

    private Day[] mDays;

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

        Intent intent = getIntent();
        Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
        mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);
        DayAdapter adapter = new DayAdapter(this, mDays);

    }


    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        String dayOfTheWeek = mDays[position].getDayOfTheWeek();
        String conditions = mDays[position].getSummary();
        String highTemp = mDays[position].getTemperatureMax()  + "";
        String message = String.format("On %s the high will be %s and it will be %s", dayOfTheWeek, highTemp, conditions);
        Toast.makeText(this, message, Toast.LENGTH_LONG).show();
    }
}

EDIT: SORRY FORGOT TO POST THIS!HERE IS ACTIVITY DAILY FORECAST

'package com.dredaydesigns.stormy.ui;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;

import com.dredaydesigns.stormy.R;
import com.dredaydesigns.stormy.adapters.DayAdapter;
import com.dredaydesigns.stormy.weather.Day;

import java.util.Arrays;

import butterknife.ButterKnife;

public class DailyForecastActivity extends ListActivity {

    private Day[] mDays;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_daily_forecast);
        ButterKnife.inject(this);
        Intent intent = getIntent();
        Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
        mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);
        DayAdapter adapter = new DayAdapter(this, mDays);

    }


    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        String dayOfTheWeek = mDays[position].getDayOfTheWeek();
        String conditions = mDays[position].getSummary();
        String highTemp = mDays[position].getTemperatureMax()  + "";
        String message = String.format("On %s the high will be %s and it will be %s", dayOfTheWeek, highTemp, conditions);
        Toast.makeText(this, message, Toast.LENGTH_LONG).show();
    }
}
'

Do I need to declare the ListActivity differently?

You need to post your activity_daily_forecast as well. So we can at least try to see what's wrong. — Ye Lin Aung
– Ye Lin Aung, Commented Jul 20, 2015 at 4:23
And please look at the similar questions and answers : java.lang.ClassCastException: android.widget.RelativeLayout , Android listview trouble — Ye Lin Aung
– Ye Lin Aung, Commented Jul 20, 2015 at 4:25

Gopal Singh Sirvi · Accepted Answer · 2015-07-20 04:26:33Z

0

Set the id of your ListView id as @android:id/list and then your onCreate method will be

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

        Intent intent = getIntent();
        Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
        mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);
        DayAdapter adapter = new DayAdapter(this, mDays);
        setListAdapter(adapter);
    }

answered Jul 20, 2015 at 4:26

Gopal Singh Sirvi

4,6595 gold badges39 silver badges56 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

dreday Over a year ago

it is currently set as @android:id/list but I did try and implement your onCreate method and got this error i belive the same. java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.ListView ActivityThread.access$800(ActivityThread.java:135) ... Caused by: java.lang.ClassCastException:

Gopal Singh Sirvi Over a year ago

have you setted the adapter?

dreday Over a year ago

i dont know what that means :(

Collectives™ on Stack Overflow

Class cast exception when extending ListActivity

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related