Crystal Ball App Changing Theme Crashes App

Question

I am going through the Crystal Ball track. When I change the theme from the default it crashes. If I put back the default App theme it works. The theme I am trying to switch to is the one in the videos "Theme.Black.NoTitleBar.Fullscreen" please help.

Answer 1 · 2014-04-01T10:43:06Z

April 1, 2014 10:43am

Ok I have worked out a solution not clear why but it works. Cristian Palomino Rivera Thanks for the help sorry I was not able to understand what you were telling me to do.

I created a new project and up my android support to version 4.0 and higher.
I copied my code and refactored to new project name.
I changed my extends from ActionBarActivity to Activity in my MainActivity.java.
I commented out all code in my new project that was created by default and removed my Fragments under layout as I did before.

Here is my working Main Activity.java

package com.example.crystalball2;

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {

    //Declaring Variables 
    private CrystalBall mCrystalBall = new CrystalBall();
    private TextView mAnswerLabel;
    private Button mGetAnswerButton;
    private ImageView mCrystalBallImage;



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


    // Assign our Views from the layout file
    mAnswerLabel = (TextView) findViewById(R.id.textView1); 
    mGetAnswerButton= (Button) findViewById(R.id.button1);
    mCrystalBallImage = (ImageView) findViewById(R.id.imageView1);

    mGetAnswerButton.setOnClickListener(new View.OnClickListener() {

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



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

            animateCrystalBall();
            animateAnswer();
            playSound();
        }
    });


}

private void animateCrystalBall(){

    mCrystalBallImage.setImageResource(R.drawable.ball_animation);
    AnimationDrawable ballAnimation = (AnimationDrawable) mCrystalBallImage.getDrawable(); 
    if (ballAnimation.isRunning()){
        ballAnimation.stop();
    }
    ballAnimation.start();
}

private void animateAnswer(){
    AlphaAnimation fadeInAnimation = new AlphaAnimation(0, 1);
    fadeInAnimation.setDuration(1500);
    fadeInAnimation.setFillAfter(true);

    mAnswerLabel.setAnimation(fadeInAnimation);
}

private void playSound(){
    MediaPlayer player = MediaPlayer.create(this, R.raw.crystal_ball); 
    player.start();
    player.setOnCompletionListener(new OnCompletionListener() {

        @Override
        public void onCompletion(MediaPlayer mp) {
            mp.release();
        }
    });
}
@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);
}

//Original Code

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

        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment()).commit();
        }
    }

    @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);
    }
*/
    /**
     * A placeholder fragment containing a simple view.
     */
    /*public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container,
                    false);
            return rootView;
        }
    }*/

}

Answer 2 · 2014-03-23T15:44:37Z

March 23, 2014 3:44pm

Saludos.

Prueba esto , "android:Theme.Black.NoTitleBar.Fullscreen"

Te recomiendo adjuntar imagenes a tus preguntas para poder llegar a una respuesta exacta .

Answer 3 · 2014-03-25T15:51:54Z

March 25, 2014 3:51pm

Saludos nuevamente .

Gracias por actualizar tu pregunta y por seguir mis consejos . Ahora esta todo claro , acá te dejo muy posibles soluciones .

+Has lo siguiente con tu archivo manifest

<?xml version="1.0" encoding="utf-8"?>

<uses-sdk
    android:minSdkVersion="7"
    android:targetSdkVersion="19" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppBaseTheme" >
    <activity
        android:name="com.example.crystalball.MainActivity"
        android:label="@string/app_name" android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

+Ahora en tu "MainActivity.class" pon lo siguiente , recuerda extender a Activity

public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

//FullScreen
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

setContentView(R.layout.my_layout_xml);
 }
}

Espero que te ayude , en caso contrario actualiza tu pregunta . Gracias

Answer 4 · 2014-03-30T11:11:37Z

March 30, 2014 11:11am

I am trying to integrate what you have put in the code and I keep getting errors can you show what you are saying to add fully integrated?

Answer 5 · 2014-04-14T20:21:09Z

April 14, 2014 8:21pm

Hey all,

Really sorry about this issue. The latest Android tools update is really causing problems with our older projects. Here's a Forum post that can help, and I added notes to the video page: https://teamtreehouse.com/forum/you-need-to-use-a-themeappcompat-theme-or-descendent-crystal-ball-crashes

Welcome to the Treehouse Community

Looking to learn something new?

Reggie Walker

Reggie Walker

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