使用ButterKnife时,运行后出现RuntimeException: Unable to bind views for ...
报错内容: java.lang.IllegalStateException: Required view 'tv_next' with ID 2131492976 for method 'next' was not found. If this view is optional add '@Nullable' annotation.
发现是绑定组件时写错id了。。
要注意Activity或Fragment与xml文件的绑定!