Java 如何在Android Studio中使用多个值对名称进行分组？
我只是想问一下，如何在Java中操作代码，在Java中显示具有多个latlong值的CommonName？请帮忙，我是编程新手 MainActivity.javaJava 如何在Android Studio中使用多个值对名称进行分组？,java,android,json,Java,Android,Json,我只是想问一下，如何在Java中操作代码，在Java中显示具有多个latlong值的CommonName？请帮忙，我是编程新手 MainActivity.java public class MainActivity extends AppCompatActivity { public AutoCompleteTextView animalname; public String JSONString = "{\n" + " \"result\": [\n" +
public class MainActivity extends AppCompatActivity {
public AutoCompleteTextView animalname;
public String JSONString = "{\n" +
" \"result\": [\n" +
" {\n" +
" \"0\": \"14.44133541176629\",\n" +
" \"latitude\": \"14.44133541176629\",\n" +
" \"1\": \"120.45936525802608\",\n" +
" \"longitude\": \"120.45936525802608\",\n" +
" \"2\": \"Bataan\",\n" +
" \"province\": \"Bataan\",\n" +
" \"3\": \"Tamaraw\",\n" +
" \"commonname\": \"Tamaraw\"\n" +
" },\n" +
" {\n" +
" \"0\": \"14.656674396646768\",\n" +
" \"latitude\": \"14.656674396646768\",\n" +
" \"1\": \"121.05812014083858\",\n" +
" \"longitude\": \"121.05812014083858\",\n" +
" \"2\": \"Quezon\",\n" +
" \"province\": \"Quezon\",\n" +
" \"3\": \"Walden's Hornbill\",\n" +
" \"commonname\": \"Walden's Hornbill\"\n" +
" },\n" +
" {\n" +
" \"0\": \"14.898346071682198\",\n" +
" \"latitude\": \"14.898346071682198\",\n" +
" \"1\": \"121.42616213302608\",\n" +
" \"longitude\": \"121.42616213302608\",\n" +
" \"2\": \"General nakar\",\n" +
" \"province\": \"General nakar\",\n" +
" \"3\": \"Tamaraw\",\n" +
" \"commonname\": \"Tamaraw\"\n" +
" },\n" +
" {\n" +
" \"0\": \"15.378556159943873\",\n" +
" \"latitude\": \"15.378556159943873\",\n" +
" \"1\": \"121.39594973068233\",\n" +
" \"longitude\": \"121.39594973068233\",\n" +
" \"2\": \"Dingalan\",\n" +
" \"province\": \"Dingalan\",\n" +
" \"3\": \"Philippine Cockatoo\",\n" +
" \"commonname\": \"Philippine Cockatoo\"\n" +
" },\n" +
" {\n" +
" \"0\": \"15.491670747921509\",\n" +
" \"latitude\": \"15.491670747921509\",\n" +
" \"1\": \"120.94052188562534\",\n" +
" \"longitude\": \"120.94052188562534\",\n" +
" \"2\": \"Cabanatuan City\",\n" +
" \"province\": \"Cabanatuan City\",\n" +
" \"3\": \"Philippine Cockatoo\",\n" +
" \"commonname\": \"Philippine Cockatoo\"\n" +
" },\n" +
" {\n" +
" \"0\": \"16.229997551983594\",\n" +
" \"latitude\": \"16.229997551983594\",\n" +
" \"1\": \"120.52623997214562\",\n" +
" \"longitude\": \"120.52623997214562\",\n" +
" \"2\": \"Baguio\",\n" +
" \"province\": \"Baguio\",\n" +
" \"3\": \"Philippine Spotted Deer\",\n" +
" \"commonname\": \"Philippine Spotted Deer\"\n" +
" },\n" +
" {\n" +
" \"0\": \"6.984796116278719\",\n" +
" \"latitude\": \"6.984796116278719\",\n" +
" \"1\": \"122.02642351890961\",\n" +
" \"longitude\": \"122.02642351890961\",\n" +
" \"2\": \"Zamboanga\",\n" +
" \"province\": \"Zamboanga\",\n" +
" \"3\": \"Hawksbill Sea Turtle\",\n" +
" \"commonname\": \"Hawksbill Sea Turtle\"\n" +
" },\n" +
" {\n" +
" \"0\": \"10.100726050965035\",\n" +
" \"latitude\": \"10.100726050965035\",\n" +
" \"1\": \"125.59963979398412\",\n" +
" \"longitude\": \"125.59963979398412\",\n" +
" \"2\": \"Dinagat Island\",\n" +
" \"province\": \"Dinagat Island\",\n" +
" \"3\": \"Dinagat bushy-tailed Cloud Rat\",\n" +
" \"commonname\": \"Dinagat bushy-tailed Cloud Rat\"\n" +
" },\n" +
" {\n" +
" \"0\": \"9.35368808473656\",\n" +
" \"latitude\": \"9.35368808473656\",\n" +
" \"1\": \"118.36544272849846\",\n" +
" \"longitude\": \"118.36544272849846\",\n" +
" \"2\": \"Palawan\",\n" +
" \"province\": \"Palawan\",\n" +
" \"3\": \"Philippine Forest Turtle\",\n" +
" \"commonname\": \"Philippine Forest Turtle\"\n" +
" },\n" +
" {\n" +
" \"0\": \"9.646007526813666\",\n" +
" \"latitude\": \"9.646007526813666\",\n" +
" \"1\": \"122.85255472090171\",\n" +
" \"longitude\": \"122.85255472090171\",\n" +
" \"2\": \"Negros\",\n" +
" \"province\": \"Negros\",\n" +
" \"3\": \"Philippine naked-backed fruit bat\",\n" +
" \"commonname\": \"Philippine naked-backed fruit bat\"\n" +
" },\n" +
" {\n" +
" \"0\": \"9.551081019434731\",\n" +
" \"latitude\": \"9.551081019434731\",\n" +
" \"1\": \"123.09185859510103\",\n" +
" \"longitude\": \"123.09185859510103\",\n" +
" \"2\": \"Negros and Panay\",\n" +
" \"province\": \"Negros and Panay\",\n" +
" \"3\": \"Negros Bleeding-heart\",\n" +
" \"commonname\": \"Negros Bleeding-heart\"\n" +
" },\n" +
" {\n" +
" \"0\": \"9.380944735295179\",\n" +
" \"latitude\": \"9.380944735295179\",\n" +
" \"1\": \"118.38456063371927\",\n" +
" \"longitude\": \"118.38456063371927\",\n" +
" \"2\": \"Palawan\",\n" +
" \"province\": \"Palawan\",\n" +
" \"3\": \"Philippine Cockatoo\",\n" +
" \"commonname\": \"Philippine Cockatoo\"\n" +
" },\n" +
" {\n" +
" \"0\": \"10.071930427284427\",\n" +
" \"latitude\": \"10.071930427284427\",\n" +
" \"1\": \"125.59779391691245\",\n" +
" \"longitude\": \"125.59779391691245\",\n" +
" \"2\": \"Camiguin Sur and Dinagat Island\",\n" +
" \"province\": \"Camiguin Sur and Dinagat Island\",\n" +
" \"3\": \"Walden's Hornbill\",\n" +
" \"commonname\": \"Walden's Hornbill\"\n" +
" },\n" +
" {\n" +
" \"0\": \"13.093068957060206\",\n" +
" \"latitude\": \"13.093068957060206\",\n" +
" \"1\": \"121.06598892373722\",\n" +
" \"longitude\": \"121.06598892373722\",\n" +
" \"2\": \"Mindoro\",\n" +
" \"province\": \"Mindoro\",\n" +
" \"3\": \"Philippine Fresh Water Crocodile\",\n" +
" \"commonname\": \"Philippine Fresh Water Crocodile\"\n" +
" },\n" +
" {\n" +
" \"0\": \"9.651642644962154\",\n" +
" \"latitude\": \"9.651642644962154\",\n" +
" \"1\": \"122.84131398239595\",\n" +
" \"longitude\": \"122.84131398239595\",\n" +
" \"2\": \"Panay And Negros\",\n" +
" \"province\": \"Panay And Negros\",\n" +
" \"3\": \"Visayan Warty Pig\",\n" +
" \"commonname\": \"Visayan Warty Pig\"\n" +
" },\n" +
" {\n" +
" \"0\": \"7.2396901503428\",\n" +
" \"latitude\": \"7.2396901503428\",\n" +
" \"1\": \"125.44315069027664\",\n" +
" \"longitude\": \"125.44315069027664\",\n" +
" \"2\": \"Davao City\",\n" +
" \"province\": \"Davao City\",\n" +
" \"3\": \"Philippine Eagle\",\n" +
" \"commonname\": \"Philippine Eagle\"\n" +
" },\n" +
" {\n" +
" \"0\": \"9.810806171435631\",\n" +
" \"latitude\": \"9.810806171435631\",\n" +
" \"1\": \"124.26143093023506\",\n" +
" \"longitude\": \"124.26143093023506\",\n" +
" \"2\": \"Bohol\",\n" +
" \"province\": \"Bohol\",\n" +
" \"3\": \"Philippine Tarsier\",\n" +
" \"commonname\": \"Philippine Tarsier\"\n" +
" },\n" +
" {\n" +
" \"0\": \"13.088847376649245\",\n" +
" \"latitude\": \"13.088847376649245\",\n" +
" \"1\": \"121.0535496566772\",\n" +
" \"longitude\": \"121.0535496566772\",\n" +
" \"2\": \"Mindoro\",\n" +
" \"province\": \"Mindoro\",\n" +
" \"3\": \"Tamaraw\",\n" +
" \"commonname\": \"Tamaraw\"\n" +
" }\n" +
" ]\n" +
"}";
public ArrayList<Animals> animalList;
TextView latitude_text, longitude_text, province;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
latitude_text = findViewById(R.id.latitude_text);
longitude_text = findViewById(R.id.longitude_text);
province = findViewById(R.id.province);
initView();
animalList = extractAnimals(JSONString);
AnimalAdapter animalAdapter = new AnimalAdapter(this, R.layout.animal_row_layout, animalList);
animalname.setAdapter(animalAdapter);
animalname.setThreshold(1);
animalname.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long l) {
Animals animals = (Animals) parent.getItemAtPosition(position);
animalname.setText(animals.getCommonname());
latitude_text.setText(animals.getLatitude());
longitude_text.setText(animals.getLongitude());
province.setText(animals.getProvince());
}
});
}
private void initView() {
animalname = findViewById(R.id.animalname);
animalList = new ArrayList<>();
}
private ArrayList<Animals> extractAnimals(String JSONString){
ArrayList<Animals> list = new ArrayList<>();
try{
JSONObject rootjo = new JSONObject(JSONString);
JSONArray userja = rootjo.getJSONArray("result");
for(int i = 0; i<userja.length(); i++){
JSONObject jo= userja.getJSONObject(i);
String commonname = jo.optString("commonname");
String latitude = jo.optString("latitude");
String longitude = jo.optString("longitude");
String province = jo.optString("province");
Animals anim = new Animals(commonname, latitude, longitude, province);
list.add(anim);
}
}catch (JSONException e) {
e.printStackTrace();
}
return list;
}
}
public class AnimalAdapter extends ArrayAdapter<Animals>{
public ArrayList<Animals> animalList;
public ArrayList<Animals> tempList;
public ArrayList<Animals> suggestionList;
public AnimalAdapter(@NonNull Context context, int resource, @NonNull List<Animals> objects) {
super(context, resource, objects);
animalList = (ArrayList<Animals>) objects;
tempList = new ArrayList<>(animalList);
suggestionList = new ArrayList<>();
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
if(convertView == null){
convertView = LayoutInflater.from(getContext()).inflate(R.layout.animal_row_layout, parent,false);
TextView textView = convertView.findViewById(R.id.simple_text);
Animals animals = animalList.get(position);
textView.setText(animals.getCommonname());
}
return convertView;
}
@NonNull
@Override
public Filter getFilter() {
return filter;
}
Filter filter = new Filter() {
@Override
public CharSequence convertResultToString(Object resultValue) {
Animals animals = (Animals) resultValue;
return animals.getCommonname();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults filterResults = new FilterResults();
if (constraint != null && constraint.length()>0) {
suggestionList.clear();
constraint = constraint.toString().trim().toLowerCase();
for (Animals animals : tempList){
if(animals.getCommonname().toLowerCase().contains(constraint)){
suggestionList.add(animals);
}
}
filterResults.count = suggestionList.size();
filterResults.values = suggestionList;
}
return filterResults;
}
@Override
protected void publishResults(CharSequence charSequence, FilterResults results) {
ArrayList<Animals> uList = (ArrayList<Animals>) results.values;
if(results != null && results.count > 0){
clear();
for (Animals u : uList) {
add(u);
notifyDataSetChanged();
}
}
}
};
public class Animals {
private String commonname;
private String latitude;
private String longitude;
private String province;
public Animals(String commonname, String latitude, String longitude, String province) {
this.commonname = commonname;
this.latitude = latitude;
this.longitude = longitude;
this.province = province;
}
public String getCommonname() {
return commonname;
}
public void setCommonname(String commonname) {
this.commonname = commonname;
}
public String getLatitude() {
return latitude;
}
public void setLatitude(String latitude) {
this.latitude = latitude;
}
public String getLongitude() {
return longitude;
}
public void setLongitude(String longitude) {
this.longitude = longitude;
}
public String getProvince() {
return province;
}
public void setProvince(String province) {
this.province = province;
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/simple_text"/>
<View
android:layout_height="2dp"
android:layout_width="match_parent"
android:background="@color/colorPrimary" />
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="16dp"
tools:context="com.example.admin.sampletransfer.MainActivity">
<AutoCompleteTextView
android:id="@+id/animalname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:completionThreshold="1"
android:hint="Search Animals"/>
<TextView
android:layout_marginTop="30dp"
android:id="@+id/latitude_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_marginTop="30dp"
android:id="@+id/longitude_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_marginTop="30dp"
android:id="@+id/province"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/simple_text"/>
<View
android:layout_height="2dp"
android:layout_width="match_parent"
android:background="@color/colorPrimary" />
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="16dp"
tools:context="com.example.admin.sampletransfer.MainActivity">
<AutoCompleteTextView
android:id="@+id/animalname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:completionThreshold="1"
android:hint="Search Animals"/>
<TextView
android:layout_marginTop="30dp"
android:id="@+id/latitude_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_marginTop="30dp"
android:id="@+id/longitude_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_marginTop="30dp"
android:id="@+id/province"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
@Anton请不要因为使用了android studio标记就用它来标记问题：只有当您对IDE本身有疑问时，才应该使用android studio标记，而不是您在其中编写（或想要编写）的任何代码。请看，@Anton请不要因为您使用了android studio标记就用它来标记问题：只有当您对IDE本身有疑问时，才应该使用android studio标记，而不是您在其中编写（或想要编写）的任何代码。看到了吗