Question

经过几个小时的搜索，我无法完全理解这一点。

我尝试使用共享偏好设置保存复选框状态。据我所知，它拯救了国家。但是，这个位置全部都是关闭的，我不确定我在这里做错了什么。 btnToggle状态工作正常，但我没有存储在数据库中的checkBox状态不是，我不想使用数据库来存储该checkBox的状态。任何帮助将不胜感激！

public class AlarmListAdapter extends BaseAdapter {

private Context mContext;
private List<AlarmModel> mAlarms;
Alarms displayAlarm = new Alarms();
ViewHolder viewHolder;
private CheckBox checkBox ;

public AlarmListAdapter(Context context, List<AlarmModel> alarms) {
    mContext = context;
    mAlarms = alarms;

}

public void setAlarms(List<AlarmModel> alarms) {
    mAlarms = alarms;
}

@Override
public int getCount() {
    if (mAlarms != null) {
        return mAlarms.size();
    }
    return 0;
}

@Override
public Object getItem(int position) {
    if (mAlarms != null) {
        return mAlarms.get(position);
    }
    return null;
}

@Override
public long getItemId(int position) {
    if (mAlarms != null) {
        return mAlarms.get(position).id;
    }
    return 0;
}

private class ViewHolder
{

    RelativeLayout share;
    RelativeLayout fav;
    RelativeLayout info;
    CheckBox checkBox;

    Switch btnToggle;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {


    final AlarmModel model = (AlarmModel) getItem(position);


    if(convertView == null) {
        LayoutInflater mLayoutInflater = LayoutInflater.from(mContext);
        convertView = mLayoutInflater.inflate(R.layout.alarm_list_item, null);

        viewHolder = new ViewHolder();
        viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.visible_toggle);

        viewHolder.btnToggle = (Switch) convertView.findViewById(R.id.alarm_item_toggle);
        convertView.setTag(viewHolder);


    }
    else{

        viewHolder = (ViewHolder) convertView.getTag();
        viewHolder.checkBox.getTag(position);
        viewHolder.btnToggle.getTag(position);


    }




    viewHolder.checkBox.setTag(Long.valueOf(model.id)); // This line is important.

    viewHolder.btnToggle.setTag(Long.valueOf(model.id));

    TextView txtTime = (TextView) convertView.findViewById(R.id.alarm_item_time);
    txtTime.setText(String.format("%02d:%02d", model.timeHour, model.timeMinute));

    TextView txtName = (TextView) convertView.findViewById(R.id.alarm_item_name);
    txtName.setText(model.name);

    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_sunday), model.getRepeatingDay(AlarmModel.SUNDAY));
    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_monday), model.getRepeatingDay(AlarmModel.MONDAY));
    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_tuesday), model.getRepeatingDay(AlarmModel.TUESDAY));
    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_wednesday), model.getRepeatingDay(AlarmModel.WEDNESDAY));
    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_thursday), model.getRepeatingDay(AlarmModel.THURSDAY));
    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_friday), model.getRepeatingDay(AlarmModel.FRDIAY));
    updateTextColor((TextView) convertView.findViewById(R.id.alarm_item_saturday), model.getRepeatingDay(AlarmModel.SATURDAY));




    viewHolder.btnToggle.setChecked(model.isEnabled);
    viewHolder.btnToggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            ((AlarmSettings) mContext).setAlarmEnabled(((Long) buttonView.getTag()).longValue(), isChecked);
        }
    });



    viewHolder.checkBox.setChecked(getFromSP("visbox"));
    viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isVisible){

            viewHolder.checkBox.getTag(position);


            try {
                saveInSp("visbox", isVisible);
            } catch (Exception e) {
                e.printStackTrace();
            }

            if(isVisible) {

             // Do stuff here



            }
            else {





            }

        }


    });




    convertView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            ((AlarmSettings) mContext).startAlarmDetailsActivity(((Long) view.getTag()).longValue());
        }
    });

    convertView.setOnLongClickListener(new View.OnLongClickListener() {

        @Override
        public boolean onLongClick(View view) {
            ((AlarmSettings) mContext).deleteAlarm((Long) view.getTag());
            return true;
        }
    });




    return convertView;
}





private void updateTextColor(TextView view, boolean isOn) {
    if (isOn) {
        view.setTextColor(mContext.getResources().getColor(R.color.primary_dark));
    } else {
        view.setTextColor(Color.BLACK);
    }
}



private boolean getFromSP(String key){
    SharedPreferences preferences = mContext.getSharedPreferences("epimelis.com.lyre", android.content.Context.MODE_PRIVATE);
    boolean val = preferences.getBoolean(key, false);
    System.out.println("getting key: "+ key + " with value: " + val);
    return val;
}
private void saveInSp(String key,boolean value) throws Exception {
    //if(!value) throw new Exception("Die Die Die");ooo
    System.out.println("Saving key: " + key + " with value: " + value);
    SharedPreferences preferences = mContext.getSharedPreferences("epimelis.com.lyre", android.content.Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = preferences.edit();
    editor.putBoolean(key, value);
    editor.commit();
}

}

Answer 1

请尝试这种方式，希望这有助于您解决问题。

尝试再添加一个标记＆＃34; isChecked＆＃34;在您的AlarmModel类中，默认值为false，并使用下面的代码。

public class AlarmListAdapter extends BaseAdapter {

    private Context mContext;
    private List<AlarmModel> mAlarms;
    Alarms displayAlarm = new Alarms();

    public AlarmListAdapter(Context context, List<AlarmModel> alarms) {
        mContext = context;
        mAlarms = alarms;
    }

    public void setAlarms(List<AlarmModel> alarms) {
        mAlarms = alarms;
    }

    @Override
    public int getCount() {
        return mAlarms.size();
    }

    @Override
    public Object getItem(int position) {
        return mAlarms.get(position);
    }

    @Override
    public long getItemId(int position) {
        return mAlarms.get(position).id;
    }

    static class ViewHolder
    {
        CheckBox checkBox;
        Switch btnToggle;
        TextView txtTime;
        TextView txtName;
        TextView txtSunday;
        TextView txtMonday;
        TextView txtTuesday;
        TextView txtWednesday;
        TextView txtThursday;
        TextView txtFriday;
        TextView txtSaturday;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if(convertView == null) {
            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(mContext).inflate(R.layout.alarm_list_item, null);
            viewHolder.btnToggle = (Switch) convertView.findViewById(R.id.alarm_item_toggle);
            viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.visible_toggle);
            viewHolder.txtTime = (CheckBox) convertView.findViewById(R.id.alarm_item_time);
            viewHolder.txtName = (CheckBox) convertView.findViewById(R.id.alarm_item_name);
            viewHolder.txtSunday = (CheckBox) convertView.findViewById(R.id.alarm_item_sunday);
            viewHolder.txtMonday = (CheckBox) convertView.findViewById(R.id.alarm_item_monday);
            viewHolder.txtTuesday = (CheckBox) convertView.findViewById(R.id.alarm_item_tuesday);
            viewHolder.txtWednesday = (CheckBox) convertView.findViewById(R.id.alarm_item_wednesday);
            viewHolder.txtThursday = (CheckBox) convertView.findViewById(R.id.alarm_item_thursday);
            viewHolder.txtFriday = (CheckBox) convertView.findViewById(R.id.alarm_item_friday);
            viewHolder.txtSaturday = (CheckBox) convertView.findViewById(R.id.alarm_item_saturday);
            convertView.setTag(viewHolder);
        }
        else{

            viewHolder = (ViewHolder) convertView.getTag();
        }
        viewHolder.txtTime.setText(String.format("%02d:%02d", mAlarms.get(position).timeHour, mAlarms.get(position).timeMinute));
        viewHolder.txtName.setText(mAlarms.get(position).name);

        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.SUNDAY));
        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.MONDAY));
        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.TUESDAY));
        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.WEDNESDAY));
        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.THURSDAY));
        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.FRDIAY));
        updateTextColor(viewHolder.txtMonday, mAlarms.get(position).getRepeatingDay(AlarmModel.SATURDAY));

        viewHolder.btnToggle.setChecked(mAlarms.get(position).isEnabled);
        viewHolder.btnToggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                ((AlarmSettings) mContext).setAlarmEnabled((position), isChecked);
                mAlarms.get(position).isEnabled = isChecked;
            }
        });

        viewHolder.checkBox.setChecked(mAlarms.get(position).isChecked);
        viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isVisible){
                mAlarms.get(position).isChecked = isVisible;
                if(isVisible) {
                    // Do visible stuff here
                }
                else {
                    // Do invisible or gone stuff here

                }

            }


        });

        convertView.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                ((AlarmSettings) mContext).startAlarmDetailsActivity(position);
            }
        });

        convertView.setOnLongClickListener(new View.OnLongClickListener() {

            @Override
            public boolean onLongClick(View view) {
                ((AlarmSettings) mContext).deleteAlarm(position);
                return true;
            }
        });

        return convertView;
    }

    private void updateTextColor(TextView view, boolean isOn) {
        if (isOn) {
            view.setTextColor(mContext.getResources().getColor(R.color.primary_dark));
        } else {
            view.setTextColor(Color.BLACK);
        }
    }
}

自定义ListView中的Android Checkbox位置

1 个答案: