Neue Activity Fehler!

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


<uses-sdk
android:minSdkVersion="8"
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.terratroll.bgcchanger.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />


<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.terratroll.bgcchanger.SeekActivity"
android:label="@string/title_activity_seek" >
</activity>
</application>


</manifest>

package com.terratroll.bgcchanger;


import java.util.Random;


import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;


public class MainActivity extends ActionBarActivity {


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


final Intent intent = new Intent(this, SeekActivity.class);


Button red = (Button) findViewById(R.id.button1);
Button green = (Button) findViewById(R.id.button2);
Button blue = (Button) findViewById(R.id.button3);
Button yellow = (Button) findViewById(R.id.button4);
Button orange = (Button) findViewById(R.id.button5);
Button purple = (Button) findViewById(R.id.button6);
Button black = (Button) findViewById(R.id.button7);
Button white = (Button) findViewById(R.id.button8);
Button random = (Button) findViewById(R.id.button9);
Button seek = (Button) findViewById(R.id.button10);
final RelativeLayout layout = (RelativeLayout) findViewById(R.id.container);


red.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.RED);


}
});
green.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.GREEN);


}
});
blue.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.BLUE);


}
});
yellow.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.YELLOW);


}
});
orange.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.rgb(255,140,0));


}
});
purple.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.rgb(138,43,226));


}
});
black.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.BLACK);


}
});
white.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
layout.setBackgroundColor(Color.WHITE);


}
});
random.setOnTouchListener(new View.OnTouchListener() {






@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
int min = 100;
int max = 255;


Random r = new Random();
Random g = new Random();
Random b = new Random();
final int r1 = r.nextInt(max - min + 1) + min;
final int g1 = g.nextInt(max - min + 1) + min;
final int b1 = b.nextInt(max - min + 1) + min;


layout.setBackgroundColor(Color.rgb(r1,g1,b1));
return false;
}
});
seek.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
startActivity(intent);
}
});


if (savedInstanceState == null) {
getSupportFragmentManager().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;
}
}


}