fragment向fragment传递数据问题，我想从MsgFragment这里 点击之后获取城市名传到下一个跳转的AttractionsFragment并获取String city，我试过用javabean的SET GET方法没用。IndexFragment这个方法是写fragment跳转代码的。
有没有人帮下额。难住我很久了。
项目地址链接：https://pan.baidu.com/s/1VbWzHWg26cJ8iKNcIFlSeQ
提取码：vu86
public class IndexFragment extends Fragment implements ChangeFragment {
private Fragment fragmentMsg;
private Fragment fragmentColl;
private Fragment fragmentAction;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view1 = LayoutInflater.from(getContext()).inflate(R.layout.fragment_index, container, false);
return view1;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
fragmentMsg = MsgFragment.newInstance(this);
fragmentColl = AttractionsFragment.newInstance(this);
fragmentAction=AttractionsContentFragment.newInstance(this);
changeResult();
}
@Override
public void changeFragment() {
getChildFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.fl_content,fragmentColl).commit();
}
@Override
public void changeResult() {
getChildFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.fl_content,fragmentMsg).commit();
}
@Override
public void changeAttractionsContent() {
getChildFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.fl_content,fragmentAction).commit();
}
}
public class MsgFragment extends Fragment {
View view;
private int i;
private String str;
private String[] mVals = new String[]{ "南宁市","柳州市","桂林市" ,"梧州市" ,"北海市","防城港市","钦州市","贵港市","玉林市","百色市","贺州市","河池市","来宾市","崇左市"};
private LayoutInflater mInflater;
private FlowLayout mFlowLayout;
private CityEntity cityEntity ;
private static ChangeFragment mChange;
public static MsgFragment newInstance(ChangeFragment changeFragment) {
mChange = changeFragment;
Bundle args = new Bundle();
MsgFragment fragment = new MsgFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mInflater = LayoutInflater.from(getContext());
}
public MsgFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_msg, container, false);
mFlowLayout = view.findViewById(R.id.id_flowlayout);
initData();
return view;
}
public void initData() {
/**
* 找到搜索标签的控件
*/
for (i = 0; i < mVals.length; i++) {
final TextView tv = (TextView) mInflater.inflate(
R.layout.search_label_tv, mFlowLayout, false);
tv.setText(mVals[i]);
str = tv.getText().toString();
//点击事件
tv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
switch (((TextView) v).getText().toString()) {
case "南宁市":
String a="南宁市";
changeToAnotherFragment();
break;
case "柳州市":
cityEntity.setCity("柳州市");
changeToAnotherFragment();
break;
case "桂林市":
cityEntity.setCity("桂林市");
changeToAnotherFragment();
break;
case "梧州市":
cityEntity.setCity("梧州市");
changeToAnotherFragment();
break;
case "北海市":
cityEntity.setCity("北海市");
changeToAnotherFragment();
break;
case "防城港市":
cityEntity.setCity("防城港市");
changeToAnotherFragment();
break;
case "钦州市":
cityEntity.setCity("钦州市");
changeToAnotherFragment();
break;
case "贵港市":
cityEntity.setCity("贵港市");
changeToAnotherFragment();
break;
case "玉林市":
cityEntity.setCity("玉林市");
changeToAnotherFragment();
break;
case "百色市":
cityEntity.setCity("百色市");
changeToAnotherFragment();
break;
case "贺州市":
cityEntity.setCity("贺州市");
changeToAnotherFragment();
break;
case "河池市":
cityEntity.setCity("河池市");
changeToAnotherFragment();
break;
case "来宾市":
cityEntity.setCity("来宾市");
changeToAnotherFragment();
break;
case "崇左市":
cityEntity.setCity("崇左市");
changeToAnotherFragment();
break;
default:
break;
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
mFlowLayout.addView(tv);//添加到父View
}
}
@SuppressLint("ResourceType")
private void changeToAnotherFragment() {
mChange.changeFragment();
}
}
public class AttractionsFragment extends Fragment {
private MyListView attr_lv;
private JSONArray attr_array;
private ImageLoaderConfiguration configuration;
public DisplayImageOptions imageOptions;
private Handler handler;
private int msggg=0;
public String city;
private static ChangeFragment mChange;
public static AttractionsFragment newInstance(ChangeFragment changeFragment) {
mChange = changeFragment;
Bundle args = new Bundle();
AttractionsFragment fragment = new AttractionsFragment();
fragment.setArguments(args);
return fragment;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
//获取fragment的layout
View view = inflater.inflate(R.layout.fragment_attractions, container, false);
//对recycleview进行配置
return view;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
attr_lv=view.findViewById(R.id.frag_attractions);
configuration = ImageLoaderConfiguration.createDefault(getActivity());
ImageLoader.getInstance().init(configuration);
imageOptions = DisplayImageOptions.createSimple();
initData();
handler=new Handler(){
@Override
public void handleMessage(Message msg) {
if(msg.what ==msggg){
attr_lv.setAdapter(new AttracListAdapter(getActivity()));
attr_lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(),String.valueOf(position),Toast.LENGTH_SHORT).show();
try {
JSONObject object1=attr_array.getJSONObject(position);
String a= object1.getString("foodtitle");
String b=object1.getString("foodcontentimg");
System.out.println(a);
System.out.println(b);
} catch (JSONException e) {
e.printStackTrace();
}
}
});
}
}
};
}
private void initData() {
new Thread(){
public void run()
{
String url = DocUtil.attractions_list;
System.out.println(city);
OkHttpClient okHttpClient = new OkHttpClient();
String token= CacheUtils.getString(getActivity(), "token", "");
RequestBody body = new FormBody.Builder()
.add("token",token)
.add("city",city)
.build();
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Call call = okHttpClient.newCall(request);
try {
Response response = call.execute();
//System.out.println(response.body().string());
try {
final String string=response.body().string();
final JSONObject object=new JSONObject(string);
attr_array=object.getJSONArray("attractionsList");
System.out.println(attr_array);
if(attr_array.length()>0) {
try {
Message msg = new Message();
msg.what = msggg;
handler.sendMessage(msg);
} catch (Exception e) {
e.printStackTrace();
}
}else {
Toast.makeText(getActivity(), "无数据", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
}
class AttracListAdapter extends BaseAdapter {
private Context mContext;
public AttracListAdapter(Context mContext) {
super();
this.mContext = mContext;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return attr_array.length();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(
R.layout.attractions_item, parent, false);
try {
JSONObject object=attr_array.getJSONObject(position);
TextView tvss1=convertView.findViewById(R.id.attrac_title);
TextView tvss2=convertView.findViewById(R.id.attrac_content);
tvss1.setText(object.getString("attractionstitle"));
tvss2.setText("地址："+object.getString("attractionscontent"));
ImageView img=convertView.findViewById(R.id.attrac_img);
ImageLoader.getInstance().displayImage(DocUtil.base_url+
object.getString("attrac_img"), img,
imageOptions);
} catch (Exception e) {
e.printStackTrace();
}
}
return convertView;
}
}
}
public interface ChangeFragment {
void changeFragment();
void changeResult();
void changeAttractionsContent();
}
