java--枚举使用小例

一个枚举的使用小例子：

public class CommonLoadingBar {
	public static enum Type {
		NO_DIALOG, SHOW_LOADING, SHOW_NET_EXCEPTION, SHOW_NO_DATA, NORMAL_FEES
	}

	private Type mLoadingType = null;

	public CommonLoadingBar(View view) {
		mLoadingType = Type.NO_DIALOG;
	}

	public void showViewType(Type type) {
		if (type != Type.SHOW_LOADING && type != Type.SHOW_NET_EXCEPTION
				&& type != Type.SHOW_NO_DATA && type != Type.NORMAL_FEES) {
			return;
		}
		mLoadingType = type;
		if (mView != null && mView.getVisibility() != View.VISIBLE) {
			mView.setVisibility(View.VISIBLE);
		}
		if (type == Type.SHOW_LOADING) {
			showLoadingDialog();
		} else if (type == Type.SHOW_NET_EXCEPTION) {
			showNetException();
		} else if (type == Type.SHOW_NO_DATA) {
			showNoData();
		} else if (type == Type.NORMAL_FEES) {
			showNormalFees();
		}
	}
}