Can't run app

Could you provide the full error message from logcat and your source code (it might seem identical, but a single typo can cause errors to occur)?

Source Code: package com.lukan.funfacts;

import java.util.Random;

import android.support.v7.app.ActionBarActivity; import android.support.v7.app.ActionBar; import android.support.v4.app.Fragment; import android.graphics.Color; import android.os.Bundle; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.TextView; import android.os.Build;

public class FunFactsActivity extends ActionBarActivity {

private FactBook mFactBook = new FactBook();

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

    if (savedInstanceState == null) {
        getSupportFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment())
                .commit();
        //Declare view variable
        final TextView factLabel = (TextView) findViewById(R.id.factTextView);
        Button showFactButton = (Button) findViewById(R.id.showFactButton);
        final RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);

        View.OnClickListener listener = new View.OnClickListener(){
        public void OnClick(View view){
            String fact = mFactBook.getFact();

            factLabel.setText(fact);
            relativeLayout.setBackgroundColor(Color.RED);
        }
        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub  
        }
        };
        showFactButton.setOnClickListener(listener);

    }
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.fun_facts, 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_fun_facts, container, false);
        return rootView;
    }
}

} LogCat: 04-23 11:31:07.010: D/dalvikvm(1048): Not late-enabling CheckJNI (already on) 04-23 11:31:09.090: D/AndroidRuntime(1048): Shutting down VM 04-23 11:31:09.090: W/dalvikvm(1048): threadid=1: thread exiting with uncaught exception (group=0xb1a36ba8) 04-23 11:31:09.170: E/AndroidRuntime(1048): FATAL EXCEPTION: main 04-23 11:31:09.170: E/AndroidRuntime(1048): Process: com.lukan.funfacts, PID: 1048 04-23 11:31:09.170: E/AndroidRuntime(1048): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lukan.funfacts/com.lukan.funfacts.FunFactsActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.ActivityThread.access$800(ActivityThread.java:135) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.os.Handler.dispatchMessage(Handler.java:102) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.os.Looper.loop(Looper.java:136) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.ActivityThread.main(ActivityThread.java:5017) 04-23 11:31:09.170: E/AndroidRuntime(1048): at java.lang.reflect.Method.invokeNative(Native Method) 04-23 11:31:09.170: E/AndroidRuntime(1048): at java.lang.reflect.Method.invoke(Method.java:515) 04-23 11:31:09.170: E/AndroidRuntime(1048): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 04-23 11:31:09.170: E/AndroidRuntime(1048): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 04-23 11:31:09.170: E/AndroidRuntime(1048): at dalvik.system.NativeStart.main(Native Method) 04-23 11:31:09.170: E/AndroidRuntime(1048): Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity. 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:108) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:57) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98) 04-23 11:31:09.170: E/AndroidRuntime(1048): at com.lukan.funfacts.FunFactsActivity.onCreate(FunFactsActivity.java:26) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.Activity.performCreate(Activity.java:5231) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 04-23 11:31:09.170: E/AndroidRuntime(1048): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 04-23 11:31:09.170: E/AndroidRuntime(1048): ... 11 more

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

• <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.lukan.funfacts" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="19" />
• <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme">
• <activity android:name="com.lukan.funfacts.FunFactsActivity" android:label="@string/app_name">
• <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>

Styles:

• <resources>
• <!-- Base application theme, dependent on API level. This theme is replaced by AppBaseTheme from res/values-vXX/styles.xml on newer devices.

-->

• <style name="AppBaseTheme" parent="Theme.AppCompat.Light.DarkActionBar">
• <!-- Theme customizations available in newer API levels can go in res/values-vXX/styles.xml, while customizations related to backward-compatibility can go here.

--> </style>

• <!-- Application theme. -->
• <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
• <!-- All customizations that are NOT specific to a particular API-level can go here. --> </style> </resources>

(Not sure which layout it is but here's two files I found for the layout) Layout: <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.lukan.funfacts.FunFactsActivity" tools:ignore="MergeRootFrame" />

Fragment Layout:

• <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/relativeLayout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/Green" 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.lukan.funfacts.FunFactsActivity$PlaceholderFragment"> <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Did you know?" android:textColor="@color/transWhite" android:textSize="24sp" /> <TextView android:id="@+id/factTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/textView2" android:layout_centerVertical="true" android:text="Ants stretch when they wake up in the morning." android:textColor="@color/White" android:textSize="24sp" /> <Button android:id="@+id/showFactButton" style="?android:attr/buttonStyleSmall" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:background="@color/White" android:text="Show Another Fun Fact" android:textColor="@color/Green" /> </RelativeLayout>