Question

我有一个动态复选框列表视图。选择多个复选框时，我得到了正确的数组列表，但是当我一个接一个地选中两个复选框，然后取消选中一个复选框时，它应该选中一个复选框，但是选中了之前选中的两个复选框。

delete t 
from your_table t
left join 
(
  select id
  from your_table
  order by value desc
  limit 5
) tmp on t.id = tmp.id
where tmp.id is null

对于arraylist，我有一种方法@Configuration public class HttpConfig { @Bean public UndertowServletWebServerFactory servletWebServerFactory(ApplicationProperties properties) { UndertowServletWebServerFactory factory = new UndertowServletWebServerFactory(); factory.addBuilderCustomizers((UndertowBuilderCustomizer) builder -> builder.setServerOption(UndertowOptions.ALLOW_UNESCAPED_CHARACTERS_IN_URL, Boolean.TRUE)); return factory; } }，并且取消选中复选框后我没有得到正确的列表。

        rd_student.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                String value=objects.get(position).getUserName();
                dbs=new DataBeanStudent();
                //is chkIos checked?
                if (((CheckBox) v).isChecked()) {
                    if (stringArray.contains(value)){
                        Toast.makeText(context, "Already added", Toast.LENGTH_SHORT).show();
                    }else{
                        Toast.makeText(context, "Added", Toast.LENGTH_SHORT).show();
                        stringArray.add(value);
                        selectedStrings.add(value);
                        dbs.setUserName(value);
                        studentArray.add(dbs);
                        saveDataInSP(stringArray, finalV, studentArray);
                    }
                }else
                {
                    if (stringArray.contains(value)){
                        selectedStrings.remove(value);
                        stringArray.remove(value);
                        studentArray.remove(value);
                        Toast.makeText(context, "Removed", Toast.LENGTH_SHORT).show();
                    }else{
                        Toast.makeText(context, "Already Removed", Toast.LENGTH_SHORT).show();
                    }
                }

            }
        });

在getSelectedString()中被称为ArrayList<String> getSelectedString(){ return selectedStrings; }

getSelectedString()

检查下图。

saveDataInSP(ArrayList<String> stringArray, View view, ArrayList<DataBeanStudent> studentArray)

Answer 1

请勿将OnClickListener用于Checkbox，而应使用OnCheckedChangeListener。

$api_key="my-api-key";
    $json='{
            "longUrl": "honortraders-2.myshopify.com/admin"

            }';


$url="https://www.googleapis.com/urlshortener/v1/url?&key=".$api_key;

                                $curl = curl_init();
                                    curl_setopt($curl, CURLOPT_URL, $url);
                                    curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: application/json; charset=utf-8'));
                                    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
                                    curl_setopt($curl, CURLOPT_VERBOSE, 0);
                                    curl_setopt($curl, CURLOPT_HEADER, 0);
                                    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
                                    curl_setopt($curl, CURLOPT_POST, 1);
                                    curl_setopt($curl, CURLOPT_POSTFIELDS, $json);
                                    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
                                    $response = curl_exec ($curl);
                                    curl_close ($curl); 
                                    echo $response;*i am trying to use google urlshortner api but i am getting forbidden error*

此外，当我们使用ListView或RecyclerView时，子视图也将被回收。因此，请始终在上面的代码之后将其包括在适配器中。（假设上面的代码也在适配器中。）

rd_student.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            String value=objects.get(position).getUserName();
            dbs=new DataBeanStudent();
            //is chkIos checked?
            if (isChecked) {
                if (stringArray.contains(value)){
                    Toast.makeText(context, "Already added", Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(context, "Added", Toast.LENGTH_SHORT).show();
                    stringArray.add(value);
                    selectedStrings.add(value);
                    dbs.setUserName(value);
                    studentArray.add(dbs);
                    saveDataInSP(stringArray, finalV, studentArray);
                }
            }else
            {
                if (stringArray.contains(value)){
                    selectedStrings.remove(value);
                    stringArray.remove(value);
                    studentArray.remove(value);
                    Toast.makeText(context, "Removed", Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(context, "Already Removed", Toast.LENGTH_SHORT).show();
                }
            }

        }
    });

希望这会有所帮助。

在检查并取消选中复选框列表视图的复选框时，从arraylist中删除元素

1 个答案: