Receiving RuntimeException from lack of ListView despite xml

Question

Hello I am in my Android Project and I'm getting the following error. I have checked nearly every similar question and I am trying to use some solutions in here

RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

but they seem like they are inapplicable.

FATAL EXCEPTION: main
Process: com.spicycurryman.getdisciplined10.app, PID: 1309
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.spicycurryman.getdisciplined10.app/com.spicycurryman.getdisciplined10.app.MainActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
at android.app.ListActivity.onContentChanged(ListActivity.java:243)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:293)
at android.app.Activity.setContentView(Activity.java:1929)
at com.spicycurryman.getdisciplined10.app.MainActivity.onCreate(MainActivity.java:32)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515)

Apparently, I must have a ListView whose id attribute is 'android.R.id.list' and I unsure where to implement that in this case.

Here is my MainActivity Java:

package com.spicycurryman.getdisciplined10.app;

import android.app.ListActivity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.SeekBar.OnSeekBarChangeListener;

import com.triggertrap.seekarc.SeekArc;
import com.triggertrap.seekarc.SeekArc.OnSeekArcChangeListener;

public class MainActivity extends ListActivity {
    private SeekArc mSeekArc;
    private SeekBar mRotation;
    private SeekBar mStartAngle;
    private SeekBar mSweepAngle;
    private SeekBar mArcWidth;
    private SeekBar mProgressWidth;
    private CheckBox mRoundedEdges;
    private CheckBox mTouchInside;
    private CheckBox mClockwise;
    private TextView mSeekArcProgress;




    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSeekArc = (SeekArc) findViewById(R.id.seekArc);
        mSeekArcProgress = (TextView) findViewById(R.id.seekArcProgress);
        mRotation = (SeekBar) findViewById(R.id.rotation);
        mStartAngle = (SeekBar) findViewById(R.id.startAngle);
        mSweepAngle  = (SeekBar) findViewById(R.id.sweepAngle);
        mArcWidth = (SeekBar) findViewById(R.id.arcWidth);
        mProgressWidth = (SeekBar) findViewById(R.id.progressWidth);
        mRoundedEdges = (CheckBox) findViewById(R.id.roundedEdges);
        mTouchInside = (CheckBox) findViewById(R.id.touchInside);
        mClockwise = (CheckBox) findViewById(R.id.clockwise);

        mRotation.setProgress(mSeekArc.getArcRotation());
        mStartAngle.setProgress(mSeekArc.getStartAngle());
        mSweepAngle.setProgress(mSeekArc.getSweepAngle());
        mArcWidth.setProgress(mSeekArc.getArcWidth());
        mProgressWidth.setProgress(mSeekArc.getProgressWidth());

        mSeekArc.setOnSeekArcChangeListener(new OnSeekArcChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekArc seekArc) {
            }
            @Override
            public void onStartTrackingTouch(SeekArc seekArc) {
            }

            @Override
            public void onProgressChanged(SeekArc seekArc, int progress,
                                          boolean fromUser) {
                mSeekArcProgress.setText(String.valueOf(progress));
            }
        });

        mRotation.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setArcRotation(progress);
                mSeekArc.invalidate();
            }
        });

        mStartAngle.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setStartAngle(progress);
                mSeekArc.invalidate();
            }
        });

        mSweepAngle.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setSweepAngle(progress);
                mSeekArc.invalidate();
            }
        });

        mArcWidth.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setArcWidth(progress);
                mSeekArc.invalidate();
            }
        });

        mProgressWidth.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
            @Override
            public void onStopTrackingTouch(SeekBar arg0) {

            }
            @Override
            public void onStartTrackingTouch(SeekBar arg0) {
            }

            @Override
            public void onProgressChanged(SeekBar view, int progress, boolean fromUser) {
                mSeekArc.setProgressWidth(progress);
                mSeekArc.invalidate();
            }
        });

        mRoundedEdges.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                mSeekArc.setRoundedEdges(isChecked);
                mSeekArc.invalidate();
            }
        });

        mTouchInside.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                mSeekArc.setTouchInSide(isChecked);
            }
        });

        mClockwise.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                mSeekArc.setClockwise(isChecked);
                mSeekArc.invalidate();
            }
        });

    }

}

Here is my activity_main.xml that corresponds to the Java:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              xmlns:seekarc="http://schemas.android.com/apk/res-auto"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="vertical"
              android:paddingBottom="@dimen/activity_vertical_margin"
              android:paddingLeft="@dimen/activity_horizontal_margin"
              android:paddingRight="@dimen/activity_horizontal_margin"
              android:paddingTop="@dimen/activity_vertical_margin"
              tools:context=".MainActivity" >

    <FrameLayout
        android:id="@+id/seekArcContainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" >

        <com.triggertrap.seekarc.SeekArc
            android:id="@+id/seekArc"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:padding="30dp"
            seekarc:rotation="180"
            seekarc:startAngle="30"
            seekarc:sweepAngle="300"
            seekarc:touchInside="true"
            seekarc:arcColor="#ff2ca3cc"
            seekarc:progressColor="#ffcc2d2a"/>

        <TextView
            android:id="@+id/seekArcProgress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="0"
            android:textSize="40sp" />
    </FrameLayout>

    <include
        android:id="@+id/controls"
        layout="@layout/controls" />

</LinearLayout>

I am unsure how to interpret the error because my xml file wouldn't need to add what was asked right?

in your case just extend Activity instead of ListActivity and it should work — Raghunandan, Jun 13 '14 at 18:38

score 1 · Answer 1 · answered Jun 13 '14 at 18:33

1

Your activity_main.xml must have a ListView with id @android:id/list

Quoting docs

ListActivity has a default layout that consists of a single, full-screen list in the center of the screen. However, if you desire, you can customize the screen layout by setting your own view layout with setContentView() in onCreate(). To do this, your own view MUST contain a ListView object with the id "@android:id/list" (or list if it's in code)

But in your code where are you having setListAdapter?. You can as well extend Activity instead of ListAcitvity

answered Jun 13 '14 at 18:33

Raghunandan

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Okay. it needs to extend Activity instead of ListActivity? and I need to completely changed the linearlayout to a list instead? I am still trying to understand why – Rohit Tigga Jun 13 '14 at 18:37
@XiJiaopin nothing more to change extend Activity that's all. In case you want a list then its a different situation. but looking at the code i don't see that – Raghunandan Jun 13 '14 at 18:39
@XiJiaopin why do you need `ListActivity` in the first place? – Raghunandan Jun 13 '14 at 18:40
@Kushan i guess you meant to comment on someother post – Raghunandan Jul 08 '16 at 06:56
@Raghunandan yea, thanks :) i was wondering why i did not get a response from the post where i intended the comment to be. This solves that mystery lol – Kushan Jul 08 '16 at 07:04

Receiving RuntimeException from lack of ListView despite xml

1 Answers1