App closes inmediately

Question

Hi, I'm getting an error each time I try to run my app, it says something like "You need to use a Theme .AppCompat theme (or descendant) with this directory"

Answer 1 · 2014-05-23T15:09:13Z

May 23, 2014 3:09pm

AndroidManifext.xml

```<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.crystalball" android:versionCode="1" android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18" />

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

</application> </manifest>```

MainActivity.java

```package com.example.crystalball;

import android.app.Activity; import android.graphics.Color; 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.RelativeLayout; import android.widget.TextView;

public class MainActivity extends Activity {

private CrystalBall mCrystalBall = new CrystalBall();

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

    //Declare our view variables
    final TextView answerLabel = (TextView) findViewById(R.id.textView1);
    Button getAnswerButton = (Button) findViewById(R.id.button1);
   //final RelativeLayout mRelativeLayout = (RelativeLayout) findViewById(R.id.layout1);
    getAnswerButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            //mRelativeLayout.setBackgroundColor(Color.GREEN);
            String answer = mCrystalBall.getAnAnswer();

            //Update our 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);
}

}```

activity_main.xml

```<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" >

<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitCenter"
android:src="@drawable/ball01" />

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:gravity="center_horizontal"
android:shadowColor="@android:color/white"
android:shadowRadius="10"
android:textColor="@android:color/white"
android:textSize="32sp" />

<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/imageView1"
android:layout_alignParentBottom="true"
android:text="Dale"
android:textColor="#3f0f7f"
android:textSize="24sp"
android:textStyle="bold|italic"
android:typeface="serif" />

</RelativeLayout>```

I know what is happening now sorry about that these file contents work. MainActivity should extend Activity also verify that the package names in each file match your project package example: com.example.crystalball

[Dale Crystal Ball Screen Shot](C:/Users/infiniti technician/Pictures/DaleCrystalBall.png)

Answer 2 · 2014-05-21T19:35:14Z

May 21, 2014 7:35pm

Javier, is this actually in reference to the Customizing Buttons and Labels video or the video before it on changing the app layout? Android specifically throws this error when the theme has been deprecated for example the, Theme.Black.NoTitleBar.Fullscreen theme has been deprecated and will now throw this error even though the option is still in ADT for selection. The second reason Android will throw this error is if the theme is not compatible with either your physical or emulated testing devices. Further, if you are speaking of the video for changing app layout the fix is under the video in Ben's teacher's notes, but if you would like I could go over the code with you

Answer 3 · 2014-05-21T19:58:48Z

May 21, 2014 7:58pm

This is regarding the button customization video, I'm sure because my code from the previous video actually worked like a charm. I can send you my code if you want. BTW, I'm currently using my Samsung Galaxy Nexus for the testing.

Answer 4 · 2014-05-21T20:35:51Z

May 21, 2014 8:35pm

which of the files do you want me to send you or paste here?

Answer 5 · 2014-05-21T20:47:20Z

May 21, 2014 8:47pm

activity_main.xml:

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitCenter"
    android:src="@drawable/ball01" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:gravity="center_horizontal"
    android:shadowColor="@android:color/white"
    android:shadowRadius="10"
    android:textColor="@android:color/white"
    android:textSize="32sp" />

<Button
    android:id="@+id/button1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/imageView1"
    android:layout_alignParentBottom="true"
    android:text="Dale"
    android:textColor="#3f0f7f"
    android:textSize="24sp"
    android:textStyle="bold|italic"
    android:typeface="serif" />

</RelativeLayout>

Answer 6 · 2014-05-21T20:48:24Z

May 21, 2014 8:48pm

MainActivity.java:

package com.example.crystalball;

import android.graphics.Color; 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.RelativeLayout; 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
    final TextView answerLabel = (TextView) findViewById(R.id.textView1);
    Button getAnswerButton = (Button) findViewById(R.id.button1);
    final RelativeLayout mRelativeLayout = (RelativeLayout) findViewById(R.id.layout1);
    getAnswerButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            //mRelativeLayout.setBackgroundColor(Color.GREEN);
            String answer = mCrystalBall.getAnAnswer();

            //Update our 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 7 · 2014-05-21T20:49:07Z

May 21, 2014 8:49pm

Manifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.crystalball" android:versionCode="1" android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="18" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" >
    <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>

</manifest>

Answer 8 · 2014-05-23T01:06:15Z

May 23, 2014 1:06am

No, the only attributes I have specified are the ones for ImageView, TextView and Button elements

Answer 9 · 2014-05-23T13:28:59Z

May 23, 2014 1:28pm

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageView
    android:id="@+id/imageView1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitCenter"
    android:src="@drawable/ball01" />

    <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:gravity="center_horizontal"
    android:shadowColor="@android:color/white"
    android:shadowRadius="10"
    android:textColor="@android:color/white"
    android:textSize="32sp" />

    <Button
    android:id="@+id/button1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/imageView1"
    android:layout_alignParentBottom="true"
    android:text="Dale"
    android:textColor="#3f0f7f"
    android:textSize="24sp"
    android:textStyle="bold|italic"
    android:typeface="serif" />
</RelativeLayout>

Try copying all of that into your activity_main.xml file and that should resolve the issue that you are having. Notice in the opening RelativeLayout tag the attributes which designate the template and the size of the relative view.

Answer 10 · 2014-05-23T14:07:35Z

May 23, 2014 2:07pm

I'm still getting the same error. Here is my code:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/layout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
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="com.example.crystalball.MainActivity$PlaceholderFragment" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitCenter"
    android:src="@drawable/ball01" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:gravity="center_horizontal"
    android:shadowColor="@android:color/white"
    android:shadowRadius="10"
    android:textColor="@android:color/white"
    android:textSize="32sp" />

<Button
    android:id="@+id/button1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/imageView1"
    android:layout_alignParentBottom="true"
    android:text="Dale"
    android:textColor="#3f0f7f"
    android:textSize="24sp"
    android:textStyle="bold|italic"
    android:typeface="serif" />

</RelativeLayout>

Answer 11 · 2014-05-23T14:33:01Z

May 23, 2014 2:33pm

Yes, I just tried with your code and the app still crashes

Answer 12 · 2014-05-23T14:46:46Z

May 23, 2014 2:46pm

Could it be something related to the theme?

Answer 13 · 2014-05-23T15:41:15Z

May 23, 2014 3:41pm

Thank you very much! It is working now!

Welcome to the Treehouse Community

Looking to learn something new?

Javier Pacheco

Javier Pacheco

App closes inmediately

13 Answers

Tom Williams

Tom Williams

Tom Williams

Tom Williams

Tom Williams

Tom Williams

Javier Pacheco

Javier Pacheco

Tom Williams

Tom Williams

Javier Pacheco

Javier Pacheco

Tom Williams

Tom Williams

Javier Pacheco

Javier Pacheco

Javier Pacheco

Javier Pacheco

Javier Pacheco

Javier Pacheco

Tom Williams

Tom Williams

Javier Pacheco

Javier Pacheco

Tom Williams

Tom Williams

Javier Pacheco

Javier Pacheco

Tom Williams

Tom Williams

Javier Pacheco

Javier Pacheco

Javier Pacheco

Javier Pacheco

Javier Pacheco

Javier Pacheco

Tom Williams

Tom Williams