Java 如何从另一个类获取Android交换机状态？

我正在使用一个RecyclerView，它有一个开关，当开关打开时，用户可以将列表从a组织到Z，当开关关闭时，用户可以将列表从Z组织到a，为了实现OnClick方法，我现在需要确定每个元素的位置，但元素可以位于两个不同的位置（取决于用户选择的排序）因此，为了知道元素在哪里，我需要从实现OnClick方法的类中了解开关的状态

这是我的交换机排序实现：

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

                if(isChecked){
                    switchStatus.setText("Sorting alphabetically");


                    Collections.sort(categories, new Comparator<Categories>() {
                        @Override
                        public int compare(Categories lhs, Categories rhs) {
                            return lhs.title.compareTo(rhs.title);
                        }
                    });


                    ca.notifyDataSetChanged();

                }else{
                    switchStatus.setText("Sorting by popularity");

                    Collections.sort(categories, new Comparator<Categories>() {
                        @Override
                        public int compare(Categories rhs, Categories lhs) {
                            return lhs.title.compareTo(rhs.title);
                        }
                    });

                ca.notifyDataSetChanged();
                }

            }
        });


        //check the current state before we display the screen
        if(categoriesSortingSwitch.isChecked()){
            switchStatus.setText("Sorting alphabetically");


            Collections.sort(categories, new Comparator<Categories>() {
                @Override
                public int compare(Categories lhs, Categories rhs) {
                    return lhs.title.compareTo(rhs.title);
                }
            });


        }
        else {
            switchStatus.setText("Sorting by popularity");

            Collections.sort(categories, new Comparator<Categories>() {
                @Override
                public int compare(Categories rhs, Categories lhs) {
                    return lhs.title.compareTo(rhs.title);
                }
            });

        }

    }

//I CREATED THIS METHOD THINKING IN USING IT IN THE OTHER CLASS TO GET THE STATUS
   public boolean getSwitchstatus(){

        if(categoriesSortingSwitch.isChecked()){

            return true;
        }
        else return false;
    }

在resume中，我需要找到一种方法来获取开关的状态，这样我就可以知道元素的位置

---

非常感谢。

多亏了MkiiSoft的建议，我做到了这一点，效果非常好：

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

                    if(isChecked){
                        switchStatus.setText("Sorting alphabetically");


                        Collections.sort(categories, new Comparator<Categories>() {
                            @Override
                            public int compare(Categories lhs, Categories rhs) {
                                return lhs.title.compareTo(rhs.title);
                            }
                        });


                        ca.notifyDataSetChanged();


//JUST ADDED THIS SHARED PREFERENCE WITH THE STRINGS ("it's","on") WHEN THE SWITCH IS ON

                        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
                        SharedPreferences.Editor editor = preferences.edit();
                        editor.putString("it's","on");
                        editor.apply();

                    }else{
                        switchStatus.setText("Sorting by popularity");

                        Collections.sort(categories, new Comparator<Categories>() {
                            @Override
                            public int compare(Categories rhs, Categories lhs) {
                                return lhs.title.compareTo(rhs.title);
                            }
                        });

                    ca.notifyDataSetChanged();

    //JUST ADDED THIS SHARED PREFERENCE WITH THE STRINGS ("it's","off") WHEN THE SWITCH IS OFF

                        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
                        SharedPreferences.Editor editor = preferences.edit();
                        editor.putString("it's", "off");
                        editor.apply();
                    }

                }
            });

---

多亏了MkiiSoft的建议，我做到了这一点，而且效果非常好：

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

                    if(isChecked){
                        switchStatus.setText("Sorting alphabetically");


                        Collections.sort(categories, new Comparator<Categories>() {
                            @Override
                            public int compare(Categories lhs, Categories rhs) {
                                return lhs.title.compareTo(rhs.title);
                            }
                        });


                        ca.notifyDataSetChanged();


//JUST ADDED THIS SHARED PREFERENCE WITH THE STRINGS ("it's","on") WHEN THE SWITCH IS ON

                        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
                        SharedPreferences.Editor editor = preferences.edit();
                        editor.putString("it's","on");
                        editor.apply();

                    }else{
                        switchStatus.setText("Sorting by popularity");

                        Collections.sort(categories, new Comparator<Categories>() {
                            @Override
                            public int compare(Categories rhs, Categories lhs) {
                                return lhs.title.compareTo(rhs.title);
                            }
                        });

                    ca.notifyDataSetChanged();

    //JUST ADDED THIS SHARED PREFERENCE WITH THE STRINGS ("it's","off") WHEN THE SWITCH IS OFF

                        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
                        SharedPreferences.Editor editor = preferences.edit();
                        editor.putString("it's", "off");
                        editor.apply();
                    }

                }
            });

---

使用SharedReference。开关打开时保存/创建数据（共享），开关关闭时删除数据。如果启用，请检查SharedReference（您可以为此使用标记），如果匹配，则根据需要执行操作。使用SharedReference。开关打开时保存/创建数据（共享），开关关闭时删除数据。如果启用，请检查SharedReference（您可以为此使用标记），如果匹配，则执行任意操作。

    public void onClick(View v) {
                final Intent intent;

                int position = getAdapterPosition();

                SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
                String onoff = preferences.getString("it's", "");

//IF IT IS ON DO THIS
                if(onoff.equalsIgnoreCase("on"))
                {
                    if (position==0){

                        intent =  new Intent(context, nose.class);
                        context.startActivity(intent);
                    }

    //IF IT IS OFF DO THIS
                } else if (onoff.equalsIgnoreCase("off")){

                    if (position==0){

                        intent =  new Intent(context, nose2.class);
                        context.startActivity(intent);
                    }
                }
            }