Question

我想在下面的代码中通过SharedPreferences保存我的ToggleButton状态。请指导我。非常感谢。

public class MyAdapterList extends BaseAdapter {

    private Context context;
    private List text;



    public MyAdapterList(Context context, List text) {
        this.context = context;
        this.text = text;
    }

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

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

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

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

        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = inflater.inflate(R.layout.item_view, null, false);
        TextView tv = (TextView) view.findViewById(R.id.textView);
        tv.setText(text.get(position));
        Typeface tf = Typeface.createFromAsset(context.getAssets(), "fonts/b_titr.ttf");
        tv.setTypeface(tf);
        tv.setTextColor(Color.parseColor("#003366"));
        tv.setTypeface(tv.getTypeface(), Typeface.BOLD);


        final ToggleButton toggleButton = (ToggleButton) view.findViewById(R.id.t_button);

        final MyDatabaseHelper myDatabaseHelper = new MyDatabaseHelper(context);

        toggleButton.setBackgroundResource(R.drawable.favorite_not_selected);

        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (toggleButton.isChecked()) {


                    myDatabaseHelper.insert(text.get(position));

                    toggleButton.setBackgroundResource(R.drawable.favorite_selected);
                    Toast.makeText(context, "Was added to the list of favorites", Toast.LENGTH_SHORT).show();


                } else {


                    myDatabaseHelper.deletedData(text.get(position));
                    Toast.makeText(context, "Removed from favorites", Toast.LENGTH_SHORT).show();
                    toggleButton.setBackgroundResource(R.drawable.favorite_not_selected);


                }

            }
        });



        return view;


    }


}

Answer 1

您可以使用以下代码保存切换按钮状态

   final   SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        ToggleButton toggle = (ToggleButton) findViewById(R.id.toggle);
        toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

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

                prefs.edit().putBoolean("value", isChecked).commit();
            }
        });

让他们回来使用

 Boolean value = prefs.getBoolean("value", false);

Answer 2

static ArrayList<String> toogleValue=new ArrayList<String>();

 ToggleButton toggle = (ToggleButton) findViewById(R.id.toggle);
if(toogleValue.contains("id"))
{
toggle.setChecked(true)
}else
{
toggle.setChecked(false);
}

        toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
           @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)       {
         if(isChecked)
{
toogleValue.add("id")
}else
{
if(toogleValue.contains(id))
toogleValue.remove("id")
 }             
            }
        });
I hope its help you.

Answer 3

如果我弄错了将选中的项目存储在具有唯一键的某些位置的数据库中（例如; - 如果它是唯一的名称）..获取已检查的构造函数列表并检查getview()是否存在而不是检查否则将其取消选中.. 您也可以使用共享首选项..这两种技术都需要一个唯一的值。

Answer 4

通过onClick内的布尔值和switch语句，保存特定状态非常容易。

private Boolean toggleBtn1;
private Boolean toggleBtn2;
private Boolean isChecked;

在您的getView中：

toggleBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                isChecked = ((ToggleButton)v).isChecked();

                toggleBtn.setTag(position);

                String pos = String.valueOf(position);

                switch (pos){

                    case "0" :

                        if (isChecked){

                            toggleBtn1 = true;

                        } else {

                            toggleBtn1 = false;

                        }

                    case "1" :

                        if (isChecked){

                            toggleBtn2 = true;

                        } else {

                            toggleBtn2 = false;

                        }

                }

            }
        });

将布尔值保存在getView之外。

使用SharedPreferences在ListView中保存ToggleButton状态

4 个答案: