知识补习
Otto 事件分发框架 导入依赖 自定义类继承自bus类写单例模式 获得对象值 注册 解除注册
ListFragmennt 自定义类继承listFragment 重写 oncreat()方法 重写onlistitemClick方法实现点击事件
DialogFragment 自定义类继承DialogFragment 重写onCreat方法 将自定义布局填充给fragmment
PagerAdapter viewPager的适配器 可以添加除fragment以外的控件 重写四个方法 getcount destoryItem isViewfromObject
代码
public class FragMent1 extends ListFragment {
String
[] citys
={"北京","上海","广州"};
@Override
public View
onCreateView(LayoutInflater inflater
, ViewGroup container
, Bundle savedInstanceState
) {
return super.onCreateView(inflater
, container
, savedInstanceState
);
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState
) {
super.onCreate(savedInstanceState
);
setListAdapter(new ArrayAdapter<>(getActivity(),R.layout
.support_simple_spinner_dropdown_item
,citys
));
}
@Override
public void onListItemClick(ListView l
, View v
, int position
, long id
) {
super.onListItemClick(l
, v
, position
, id
);
EventBus
.getDefault().post(citys
[position
]);
}
}
public class FragMent2 extends ListFragment {
String
[] beijing
={"昌平","朝阳","海淀"};
String
[] tianjing
={"天津1","天津2","天津3"};
String
[] guangdong
={"广州1","广州2","广州3"};
ArrayAdapter
<String> adapter
= new ArrayAdapter<>(getActivity(), R
.layout
.support_simple_spinner_dropdown_item
, beijing
);
@Override
public void onCreate(@Nullable Bundle savedInstanceState
) {
super.onCreate(savedInstanceState
);
setListAdapter(adapter
);
EventBus
.getDefault().register(this);
}
@Override
public View
onCreateView(LayoutInflater inflater
, ViewGroup container
, Bundle savedInstanceState
) {
return super.onCreateView(inflater
, container
, savedInstanceState
);
}
@Subscribe(threadMode
= ThreadMode
.MAIN
)
public void onEvent(String name
){
if(name
.equals("北京")){
adapter
= new ArrayAdapter<>(getActivity(), R
.layout
.support_simple_spinner_dropdown_item
, beijing
);
adapter
.notifyDataSetChanged();
}else if(name
.equals("天津")){
adapter
= new ArrayAdapter<>(getActivity(), R
.layout
.support_simple_spinner_dropdown_item
, tianjing
);
adapter
.notifyDataSetChanged();
}else if(name
.equals("广州")){
adapter
= new ArrayAdapter<>(getActivity(), R
.layout
.support_simple_spinner_dropdown_item
, guangdong
);
adapter
.notifyDataSetChanged();
}
}
@Override
public void onDestroy() {
super.onDestroy();
EventBus
.getDefault().unregister(this);
}
@Override
public void onListItemClick(ListView l
, View v
, int position
, long id
) {
super.onListItemClick(l
, v
, position
, id
);
}
