Fragment静态传值（RecyclerView,接口回调）
效果图：
布局 ：
activity:
<fragment
android:layout_width="0dp"
android:layout_weight="1"
android:name="com.example.administrator.yn_demob.Fragmnet1"
android:layout_height="match_parent"
android:id="@+id/f1"></fragment>
<fragment
android:layout_width="0dp"
android:layout_weight="2"
android:name="com.example.administrator.yn_demob.Fragmnet2"
android:layout_height="match_parent"
android:id="@+id/f2"></fragment>
fragment1:
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/f1_rec"></android.support.v7.widget.RecyclerView>
fragment2:
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/f2_rec"></android.support.v7.widget.RecyclerView>
f1_list布局
<TextView
android:textColor="@drawable/select"android:textSize="18dp" android:text="大多数" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/f1_list_text"/>f2_list布局
<ImageView
android:layout_width="100dp"
android:src="@mipmap/ic_launcher"
android:layout_height="100dp"
android:id="@+id/f2_list__pic"/>
<TextView
android:text="的繁华都市跨界"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="15dp"
android:id="@+id/f2_list_text"/>
//写一个selector字体变颜色
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:color="#ff0"/>
<item android:state_selected="false" android:color="#000"/>
</selector>
MainActivity类什么都不用写，因为我们用的静态注册的
Fragment1 类中
public class Fragmnet1 extends Fragment {
private RecyclerView rec;
public void setOnItem(OnItem onItem) {
this.onItem = onItem;
}
private OnItem onItem;
private Handler handler =new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
if(msg.what==0){
String str = (String) msg.obj;
//Gson解析
Gson gson =new Gson();
Bean bean = gson.fromJson(str, Bean.class);
final List<Bean.ResultBean.BrandsBean> brands = bean.getResult().getBrands();
rec.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.VERTICAL,false));
MyList my =new MyList(getActivity(),brands);
rec.setAdapter(my);
//适配器点击并接口回调传值
my.setOnItemLiener(new MyList.OnItemLiener() {
@Override
public void ItemLiseren(View view, int position) {
onItem.OnItems(position,brands);
}
});
}
}
};
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view =inflater.inflate(R.layout.f1_main,null);
//找空件
initView(view);
return view;
}
private void initView(View view) {
rec = (RecyclerView) view.findViewById(R.id.f1_rec);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getData();
}
//定义一个接口并提供set方法
public interface OnItem{
void OnItems(int posotion,List<Bean.ResultBean.BrandsBean> list);
}
// OkHttpClient进行解析
private void getData() {
OkHttpClient mOkHttp =new OkHttpClient();
String url ="http://www.babybuy100.com/API/getShopOverview.ashx";
Request request =new Request.Builder().url(url).build();
Call call = mOkHttp.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
}
@Override
public void onResponse(Response response) throws IOException {
String string = response.body().string();
Message message = handler.obtainMessage(0, string);
message.sendToTarget();
}
});
}
}
f1_适配器
public class MyList extends RecyclerView.Adapter<MyList.ViewHolder> { private Context context; private List<Bean.ResultBean.BrandsBean> brands; private OnItemLiener onItemLiener; private int item =0; public void setOnItemLiener(OnItemLiener onItemLiener) { this.onItemLiener = onItemLiener; } public interface OnItemLiener{ void ItemLiseren(View view,int position); } public MyList(Context context, List<Bean.ResultBean.BrandsBean> brands) { this.context=context; this.brands=brands; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view =View.inflate(context,R.layout.f1_list,null); final ViewHolder holder =new ViewHolder(view); view.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { int position = holder.getLayoutPosition(); item =position; if(onItemLiener!=null){ onItemLiener.ItemLiseren(v,position); } notifyDataSetChanged(); } }); return holder; } @Override public void onBindViewHolder(ViewHolder holder, int position) { holder.text.setText(brands.get(position).getTitle()); //点击字体变颜色 if(item==position){ holder.text.setSelected(true); }else{ holder.text.setSelected(false); } } @Override public int getItemCount() { return brands.size(); } class ViewHolder extends RecyclerView.ViewHolder{ private final TextView text; public ViewHolder(View itemView) { super(itemView); text = (TextView) itemView.findViewById(R.id.f1_list_text); } } }
fragment2类中：
public class Fragmnet2 extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view =inflater.inflate(R.layout.f2_main,null);
initView(view);
return view;
}
private void initView(View view) {
final RecyclerView rec = (RecyclerView) view.findViewById(R.id.f2_rec);
rec.setLayoutManager(new GridLayoutManager(getActivity(),3,GridLayoutManager.VERTICAL,false));
//使用接口回调传过来的值
Fragmnet1 f1 = (Fragmnet1) getActivity().getSupportFragmentManager().findFragmentById(R.id.f1);
f1.setOnItem(new Fragmnet1.OnItem() {
@Override
public void OnItems(int posotion, List<Bean.ResultBean.BrandsBean> list) {
MyGrid my =new MyGrid(getActivity(),list.get(posotion).getProducts());
rec.setAdapter(my);
}
});
}
}
f2_适配器
public class MyGrid extends RecyclerView.Adapter<MyGrid.ViewHolder> {
private Context context;
private List<Bean.ResultBean.BrandsBean.ProductsBean> products;
public MyGrid(Context context, List<Bean.ResultBean.BrandsBean.ProductsBean> products) {
this.context=context;
this.products =products;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.f2_list,null);
ViewHolder holder =new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Glide.with(context).load(products.get(position).getPic()).into(holder.pic);
holder.textx.setText(products.get(position).getName());
}
@Override
public int getItemCount() {
return products.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
private final ImageView pic;
private final TextView textx;
public ViewHolder(View itemView) {
super(itemView);
pic = (ImageView) itemView.findViewById(R.id.f2_list__pic);
textx = (TextView) itemView.findViewById(R.id.f2_list_text);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position = getLayoutPosition();
Toast.makeText(context, "当前的条目" + position, Toast.LENGTH_SHORT).show();
}
});
}
}
}