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public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        
        TV_V = (ImageView)findViewById(R.id.tv);
        TV_V.setOnClickListener(listen1);
        
        LAMP_V = (ImageView)findViewById(R.id.lamp);
        LAMP_V.setOnClickListener(listen2);
        
        HEAT_V = (ImageView)findViewById(R.id.heat);
        HEAT_V.setOnClickListener(listen3);
        
        Home_V = (ImageView)findViewById(R.id.Home);
		Home_V.setOnClickListener(listen4);
           
    }
    
    
    private OnClickListener listen1 = new OnClickListener(){
 	
   	
	public void onClick(View v) {
		// TODO Auto-generated method stub
		setContentView(R.layout.geraete);
		geraete();		
	}
    };

    private OnClickListener listen2 = new OnClickListener(){
    	
	public void onClick(View v) {
		// TODO Auto-generated method stub
		setContentView(R.layout.lampen);
	}
    };
    
    private OnClickListener listen3 = new OnClickListener(){
    	
	public void onClick(View v) {
		// TODO Auto-generated method stub
		setContentView(R.layout.heizung);
	}
    };
    private OnClickListener listen4 = new OnClickListener(){
    	
	public void onClick(View v) {
		// TODO Auto-generated method stub
		setContentView(R.layout.main);
	}
    };

	public void onClick(View v) {
		// TODO Auto-generated method stub
		
	}
    
	public void geraete(){

	}