在4.0以上自定义标题栏

需要设置的几句代码：

	private void setCustomTitle() {
		requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
		setContentView(R.layout.main);
		getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,
				R.layout.customtitle);
	}	private void setCustomTitle() {