android的activity布局玩法

布局层级

https://github.com/Petterpx/FloatingX

利用flipper查看布局,可见:

最后两个view,真正就只是背景,而不是真正的状态栏,导航栏view:

修改背景可见:

且onResumed时还不能立刻拿到

玩法1: debug包时显示activity名字

注册activityLifecycleCalback,在onActivityCreated回调里:

    private void showActivityNameAtDecorView2(Activity activity) {
        View decorView = activity.getWindow().getDecorView();
        //extends FrameLayout
        if(decorView instanceof FrameLayout){
            FrameLayout root = (FrameLayout) decorView;
            TextView textView = new TextView(activity);
            //textView.setId(R.id.tv_text_debug);
            int padding = SizeUtils.dp2px(25);
            textView.setTextColor(Color.BLUE);
            textView.setTextSize(12);
            textView.setText( activity.getClass().getSimpleName());
            textView.setPadding(padding,padding,padding,padding);
            root.addView(textView);
        }
    }