Android的Activity视图层级分析_安卓开发修改activity的层级

Activity视图层级图

Activity的初始化
Activity的初始化是从从Activity的setContentView()，源码为

    public void setContentView(View view) {
        getWindow().setContentView(view);
        initWindowDecorActionBar();
    }
    public void setContentView(@LayoutRes int layoutResID) {
        getWindow().setContentView(layoutResID);
        initWindowDecorActionBar();
    }
        public void setContentView(View view, ViewGroup.LayoutParams params) {
        getWindow().setContentView(view, params);
        initWindowDecorActionBar();
    }
1
2
3
4
5
6
7
8
9
10
11
12

三种重载方法，都有调用initWindowDecorActionBar()为显示Decor和ActionBar

    private void initWindowDecorActionBar() {
        //window是抽象类，所以找其实现类phoneWindow
        Window window = getWindow();

        //初始化decorview
        window.getD
1
2
3
4
5
6