控件默认的 enabled / clickable / longClickable / focusable / focusableInTouchMode / focused 情况:
| \ | enabled | clickable | longClickable | focusable | focusableInTouchMode | focused |
|---|---|---|---|---|---|---|
| Button | true | true | false | true | false | false |
| TextView | true | false | false | false | false | false |
| EditText | true | true | true | true | true | false |
| ImageView | true | false | false | false | false | false |
| LinearLayout | true | false | false | false | false | false |
| RelativeLayout | true | false | false | false | false | false |
| FrameLayout | true | false | false | false | false | false |
| ListView | true | true | false | false | false | false |
| GridView | true | true | false | false | false | false |
| ViewPager | true | false | false | true | false | false |
| RecyclerView | true | false | false | true | true | false |
| simplest CustomView (最普通的自定义控件) | true | false | false | false | false | false |