Question

我一直试图自己实现一个多选微调器。所以问题是我能够选中复选框，但当我关闭并再次打开微调器时，所选的复选框将被取消选中。所以我想我会将自己的itemclick监听器实现到微调器并使用位置来检查复选框。现在，我的旋转器没有掉下来。

这是主要活动的代码。

public class MyProfileActivity extends Activity implements 
    View.OnClickListener, SpinnerMultiSelectAdapter.OnListItemClickListener{      

    protected void onCreate(final Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_profile);

       lang_spinner_profile = findViewById(R.id.lang_spinner_profile);

       ArrayList<String> options = new ArrayList<>();
       options.add("English");
       options.add("Japanese");
       options.add("Chinese");
       options.add("Korean");

       lang_spinner_profile.setSelection(0);

       final String[] languages = {
            "Select Language", "English","Chinese","Japanese","Korean"};

       for (int j = 0; j < languages.length; j++) {
           StateVO stateVO= new StateVO();
           stateVO.setTitle(languages[j]);
           stateVO.setSelected(false);
           listVOs.add(stateVO);
       }
       Log.d("Called","Called");

       myAdapter = new SpinnerMultiSelectAdapter(MyProfileActivity.this, 0,
            listVOs, this);
       lang_spinner_profile.setAdapter(myAdapter);
   }

   @Override
   public void onListItemClick(int position) {
     Toast.makeText(this, "Clicked at: "+position, Toast.LENGTH_SHORT).show();
   }
}

这是我为微调器设计的自定义pojo类。

public class StateVO {
   private String title;
   private boolean selected;
   private String selectedItem;


   public String getTitle() {
      return title;
   }

   public void setTitle(String title) {
      this.title = title;
   }

   public boolean isSelected() {
      return selected;
   }

   public void setSelected(boolean selected) {
      this.selected = selected;
   }
}

这是微调器自定义布局。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content">

   <TextView
       android:id="@+id/text"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_marginLeft="20dp"
       android:text="text"
       android:textAlignment="gravity" />

   <CheckBox
       android:id="@+id/checkbox"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentEnd="true"
       android:layout_alignParentRight="true" />
</RelativeLayout>

最后，这是我的自定义适配器。

public class SpinnerMultiSelectAdapter extends ArrayAdapter<StateVO> {
   private Context mContext;
   static private ArrayList<StateVO> listState;
   private SpinnerMultiSelectAdapter myAdapter;
   private boolean isFromView = false;
   List<String> selected = new ArrayList<>();
   static int i=0;
   List<Integer> checked= new ArrayList<>();

   View itemView;
   int getPosition;

   private OnListItemClickListener onListItemClickListener;

   public SpinnerMultiSelectAdapter(Context context, int resource, List<StateVO> objects, OnListItemClickListener onListItemClickListener) {
       super(context, resource, objects);
       this.mContext = context;
       this.listState = (ArrayList<StateVO>) objects;
       this.myAdapter = this;
       this.onListItemClickListener = onListItemClickListener;
   }

   @Override
   public View getDropDownView(int position, View convertView,
                            ViewGroup parent) {
       return getCustomView(position, convertView, parent);
   }

   @Override
   public View getView(int position, View convertView, ViewGroup parent) {
       return getCustomView(position, convertView, parent);
   }

   public View getCustomView(final int position, View convertView,
                          ViewGroup parent) {

       final ViewHolder holder;
       if (convertView == null) {
           LayoutInflater layoutInflator = LayoutInflater.from(mContext);
           convertView = layoutInflator.inflate(R.layout.spinner_item, null);
           itemView = convertView;
           holder = new ViewHolder();
           holder.mTextView = (TextView) convertView
                .findViewById(R.id.text);
           holder.mCheckBox = (CheckBox) convertView
                .findViewById(R.id.checkbox);
           convertView.setTag(holder);
       } else {
           holder = (ViewHolder) convertView.getTag();
       }

       holder.mTextView.setText(listState.get(position).getTitle());

       // To check weather checked event fire from getview() or user input
       isFromView = true;
       holder.mCheckBox.setChecked(listState.get(position).isSelected());
       isFromView = false;

       if ((position == 0)) {
           holder.mCheckBox.setVisibility(View.INVISIBLE);
       } else {
           holder.mCheckBox.setVisibility(View.VISIBLE);
       }
       holder.mCheckBox.setTag(position);
       selected.clear();
       holder.mCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
           @Override
           public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
               getPosition = (Integer) buttonView.getTag();
               holder.mCheckBox.setSelected(true);
               //notifyDataSetChanged();
           }
       });
       return convertView;
   }

   private class ViewHolder implements View.OnClickListener {
       private TextView mTextView;
       private CheckBox mCheckBox;

       public ViewHolder(){
           itemView.setOnClickListener(this);
       }

       @Override
       public void onClick(View v) {
           onListItemClickListener.onListItemClick(getPosition);
       }
   }
   public interface OnListItemClickListener {
       public void onListItemClick(int position);
   }
}

感谢任何帮助。谢谢。

Answer 1

你的适配器几乎没有错误，应该如何;

public ParseResponse getParseResponseObj(ParseRequest req){
   this.parseResponse =  getParseResponse(req);
    return this.parseResponse;
}

private ParseResponse getParseResponse(ParseRequest request){

    HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
    logging.setLevel(HttpLoggingInterceptor.Level.BODY);

      final String BASE_URL = "https://api.infermedica.com/v2/";
      OkHttpClient.Builder httpClient =
            new OkHttpClient.Builder();
      httpClient.addInterceptor(logging);

      Retrofit.Builder builder =
            new Retrofit.Builder().baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .client(httpClient.build());

        Retrofit retrofit = builder.client(httpClient.build()).build();
        InfermedicaClient infermedicaClient = retrofit.create(InfermedicaClient.class);
    //final MutableLiveData<ParseResponse> resp = new MutableLiveData<>();
    //parseResponse = new ParseResponse();
    Call<ParseResponse> call = infermedicaClient.parseUserInput(Constants.APP_ID,Constants.APP_KEY,request);

    call.enqueue(new Callback<ParseResponse>() {
        @Override
        public void onResponse(Call<ParseResponse> call, Response<ParseResponse> response) {

            if (response.isSuccessful()) {
                 parseResponse = response.body();
             }
            Log.v("ParseReq Success" , response.message());

        }

        @Override
        public void onFailure(Call<ParseResponse> call, Throwable t) {

            Log.v("ParseReq Success" , t.getMessage());


        }
    });


    return parseResponse;
}

如何为带有复选框的微调器添加自定义onClicklistener

1 个答案: