Crystal Ball

Question

I am getting the "Unfortunately, Crystal Ball has stopped" message. I have retraced steps and not sure why it is now failing. Any help would be greatly appreciated.

Here is the activity_main section:

<ImageView
    android:id="@+id/imageView2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitCenter"
    android:src="@drawable/ball01" />

<Button
    android:id="@+id/button1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/imageView2"
    android:layout_alignLeft="@+id/imageView2"
    android:text="Enlighten Me!"
    android:textColorLink="#3f0f7f"
    android:textSize="24sp"
    android:textStyle="bold|italic"
    android:typeface="serif" />

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_centerVertical="true"
    android:weightSum="1" >

    <View
        android:id="@+id/view1"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_weight="0.2" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="0.6"
        android:gravity="center_horizontal"
        android:shadowColor="@android:color/white"
        android:shadowRadius="10"
        android:textColor="#3f0f7f"
        android:textSize="32sp" />

    <View
        android:id="@+id/view2"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_weight="0.2" />

</LinearLayout>

</RelativeLayout>

Here is the MainActivity section:

package com.example.crystalball;

import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.TextView;

public class MainActivity extends ActionBarActivity {

private CrystalBall mCrystalBall = new CrystalBall();

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

    //Declare our View variables and assign them the Views from the layout file
    final TextView answerLabel = (TextView) findViewById(R.id.textView1);
    Button getAnswerButton = (Button) findViewById(R.id.button1);

    getAnswerButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            String answer = mCrystalBall.getAnAnswer();

            //Update the label with our dynamic answer
            answerLabel.setText(answer);
        }
    });
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

}

Answer 1 · 2014-07-18T07:17:06Z

July 18, 2014 7:17am

Ok here is the issue

The error relates to java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity

The video in treehouse uses the Theme called ** Theme.Black.NoTitleBar.Fullscreen ** . Are you using this?

If yes, then the new android update no longer supports this. However there is a work around as proposed by treehouse

1) Change your project back to using "AppTheme" like it was before in AndroidManifest.xml and the preview.

2) Add the following two lines to the file res/values/styles.xml (inside the <style name="AppTheme"> tag):

<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>

3) Set the background color to black in the file res/layout/activity_main.xml. The root element, RelativeLayout, is the one that makes up the whole screen. Add this line after the layout_height line but before the closing angle bracket >:

android:background="@android:color/black"

4) Change MainActivity to extend Activity, not ActionBarActivity

Hope this helps. Ask again if you have doubts.

Answer 2 · 2014-07-16T13:28:23Z

July 16, 2014 1:28pm

Did you omit the <Relative_Layout*>* tag on purpose or have you not created one at all?

This is how your xml structure should look like

Relative Layout
             ImageView
             Button

            LinearLayout
                       View1
                       TextView
                       View2
           Close LinearLayout
Close Relative layout

Answer 3 · 2014-07-17T02:04:41Z

July 17, 2014 2:04am

Sorry. For some reason the relative layout will not past....but it is there at the top of the file.

Answer 4 · 2014-07-17T06:46:37Z

July 17, 2014 6:46am

Can you look in the console or the logcat tab and paste the errors here that are generated. It will give a better understanding then.

Answer 5 · 2014-08-03T21:53:00Z

August 3, 2014 9:53pm

Awesome.

Been looking for an answer for about 2 days, found nothing but retard answers.

Issue solved.

Thank You for taking your time to share this.

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Robert Shaw

Robert Shaw

Crystal Ball

5 Answers

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Gunjeet Hattar

Gunjeet Hattar

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Robert Shaw

Robert Shaw

Robert Shaw

Robert Shaw

Gunjeet Hattar

Gunjeet Hattar

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Endre Juhasz