android注解-butterknife

参考 http://www.it165.net/pro/html/201404/12375.html

@Optional @InjectView

@Optional @onClick

1.@Optional @InjectView(R.id.might_not_be_there) TextView mightNotBeThere;

2.

3.@Optional @OnClick(R.id.maybe_missing) void onMaybeMissingClicked() {

4.// TODO ...

5.}

无需强转

TextView firstName = ButterKnife.findById(view, R.id.first_name);