Question

我有一个包含SwitchCompat按钮的列表视图，当我在列表视图中的索引1上启用按钮时，再次当我在位置2启用按钮时，它会禁用位置1处的按钮。请帮助我，我不明白发生了什么。

代码： -

 layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    listStorage = customizedListView;
    this.mContext = context;
    existingDataSet = new ArrayList<>();
    newDataSet = new ArrayList<>();
    gson = new Gson();
    sharedPreference = new MySharedPreference(mContext);

    //retrieve data from shared preference
    String jsonScore = sharedPreference.getAppsArrayListData();
    Type type = new TypeToken<ArrayList<WhiteListModel>>() {
    }.getType();
    existingDataSet = gson.fromJson(jsonScore, type);
}

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

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

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
    final ViewHolder listViewHolder;
    if (convertView == null) {
        listViewHolder = new ViewHolder();
        convertView = layoutInflater.inflate(R.layout.installed_app_list_item, parent, false);
        listViewHolder.textInListView = (TextView) convertView.findViewById(R.id.list_app_name);
        listViewHolder.imageInListView = (ImageView) convertView.findViewById(R.id.app_icon);
        listViewHolder.switchCompat = (SwitchCompat) convertView.findViewById(R.id.toggleButton);
        convertView.setTag(listViewHolder);
    } else {
        listViewHolder = (ViewHolder) convertView.getTag();
    }
    listViewHolder.textInListView.setText(listStorage.get(position).getName());
    listViewHolder.imageInListView.setImageDrawable(listStorage.get(position).getIcon());
    listViewHolder.switchCompat.setOnCheckedChangeListener(null);

    boolean isCheck = false;
    AllAppList model = listStorage.get(position);
    if (existingDataSet != null) {
        for (int i = 0; i < existingDataSet.size(); i++) {
            if (model.getPackName().equalsIgnoreCase(existingDataSet.get(i).getPackName())) {
                isCheck = true;
            }
        }
        listViewHolder.switchCompat.setChecked(isCheck);
    }
    listViewHolder.switchCompat.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(final CompoundButton buttonView, final boolean isChecked) {
            if (isChecked) {
                new AlertDialog.Builder(mContext, R.style.AppCompatAlertDialogStyle).setTitle("Warning").setMessage("You want to whiteList this application?").setPositiveButton("YES", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int pos) {
                        //Adding items in Dataset
                        AllAppList appList = listStorage.get(position);
                        whiteListModel = new WhiteListModel();
                        whiteListModel.setName(appList.getName());
                        whiteListModel.setPackName(appList.getPackName());

                        if (existingDataSet != null) {
                            existingDataSet.add(whiteListModel);
                            saveScoreListToSharedpreference(existingDataSet);
                        } else {
                            newDataSet.add(whiteListModel);
                            saveScoreListToSharedpreference(newDataSet);
                        }
                        notifyDataSetChanged();
                        listViewHolder.switchCompat.setChecked(isChecked);

                    }
                }).setNegativeButton("No", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        notifyDataSetChanged();
                        listViewHolder.switchCompat.setChecked(isChecked);
                    }
                }).show();

            } else {
                AllAppList model = listStorage.get(position);
                if (existingDataSet != null) {
                    for (int i = 0; i < existingDataSet.size(); i++) {
                        if (model.getPackName().equalsIgnoreCase(existingDataSet.get(i).getPackName())) {
                            existingDataSet.remove(i);
                        }
                    }
                    saveScoreListToSharedpreference(existingDataSet);
                    notifyDataSetChanged();
                    listViewHolder.switchCompat.setChecked(false);
                    Toast.makeText(mContext, "Removed", Toast.LENGTH_LONG).show();

                }
            }
        }


    });
    return convertView;
}

/**
 * Save list of scores to own sharedpref
 *
 * @param whiteListApps
 */
private void saveScoreListToSharedpreference(ArrayList<WhiteListModel> whiteListApps) {
    Gson gson = new Gson();
    //convert ArrayList object to String by Gson
    String jsonScore = gson.toJson(whiteListApps);
    Log.e(TAG, "LIST::" + jsonScore);
    //save to shared preference
    sharedPreference.saveAppsArrayListData(jsonScore);
}

private class ViewHolder {
    SwitchCompat switchCompat;
    TextView textInListView;
    ImageView imageInListView;
}

}

Answer 1

boolean isCheck = false; 使用数组的这个东西，并在该特定位置进行选中和取消选中。

如下所示; -

boolean isChecked []; 器isChecked [位置] = TRUE;

SwitchCompat按钮在android中不起作用？

1 个答案: