摘要： 一般的重叠构造器模式： public class NutritionFacts{ private final int one; private final int two; private final int three; public NutritionFacts(int one,int two,int three){ this.one = one; ... 阅读全文

摘要： 首先FragmentActivity类及布局； public abstract class SingleFragmentActivity extends FragmentActivity { protected abstract Fragment createFragment(); @Overrid 阅读全文