シークバーの進捗状況を一定のレベルで止める方法は？

Question

私は簡単な質問があります。私はSeekBarのリストを持っています。私の要件は、ユーザが最初のSeekBarを70％にドラッグし、次に30％で停止する必要があるときです。私の場合、SeekBarの特定の値への進捗を停止するにはどうすればよいですか？

public class ProductsAdapter extends BaseAdapter { 
    private ArrayList<Products> list; 
    //private LayoutInflater layoutInflater; 
    private int shelfShareSum; 
    private int remainingShelfShare; 
    private static HashMap<String, Integer> shelfShareValues = new HashMap<String, Integer>(); 
    private HashMap<Integer, Integer> productShelfShareMap = new HashMap<Integer, Integer>(); 
    private Context con; 
    private SQLiteDatabase database; 
    private SQLiteOpenHelper dbHelper; 
    //SparseIntArray seekbarValuePos = new SparseIntArray(); 

    public ProductsAdapter(Context context, ArrayList<Products> list){ 
     this.list = list; 
     //layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     dbHelper = new DBHelper(context); 
     database = dbHelper.getWritableDatabase(); 
     this.con = context; 
    } 

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

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

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

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 
     View row = convertView; 
     final shelfShareHolder holder; 
     if (row == null){ 

      LayoutInflater mInflater = (LayoutInflater) con.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      row = mInflater.inflate(R.layout.shelf_share_list_view, null); 
      holder = new shelfShareHolder(); 
      holder.productTextView = (TextView) row.findViewById(R.id.shelfShareProductTextView); 
      holder.percentTextView = (TextView) row.findViewById(R.id.seekbarValue); 
      holder.shelfShareSeekbar = (SeekBar) row.findViewById(R.id.seekBar1); 
      row.setTag(holder); 
     }else { 
      holder = (shelfShareHolder) row.getTag(); 
     } 
     Products p = list.get(position); 

      //int pID = p.getProductID(); 
      int prog = p.getSetSlider(); 

      holder.shelfShareSeekbar.setProgress(list.get(position).getSetSlider()); 


     holder.shelfShareSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { 
      @Override 
      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 
       //shelfShareSum = progress; 

       holder.percentTextView.setText(String.valueOf(progress)); 
      } 

      @Override 
      public void onStartTrackingTouch(SeekBar seekBar) { 
       remainingShelfShare = 100 - shelfShareSum; 
       Integer preV = productShelfShareMap.get(((Products)list.get(position)).getProductID()); 
       if(preV == null){ 
        holder.shelfShareSeekbar.setMax(remainingShelfShare); 
       }else { 
        holder.shelfShareSeekbar.setMax(Integer.parseInt(holder.percentTextView.getText().toString()) + remainingShelfShare); 
       } 

      } 

      @Override 
      public void onStopTrackingTouch(SeekBar seekBar) { 
        /*shelfShareSum +=Integer.parseInt(seekBarValue.getText().toString()); 
        Log.i("SUM", "onStopTrackingTouch: "+shelfShareSum); 
        seekBar.setMax(shelfShareSum);*/ 
       list.get(position).setSetSlider(seekBar.getProgress()); 
       shelfShareSum = 0; 
       //remainingShelfShare = 100; 

       productShelfShareMap.put(((Products)list.get(position)).getProductID(), Integer.parseInt(holder.percentTextView.getText().toString())); 
       for (HashMap.Entry<Integer, Integer> entry : productShelfShareMap.entrySet()){ 

        shelfShareSum += entry.getValue(); 

       } 

       shelfShareValues.put(((Products)list.get(position)).getShelfShareID()+"-"+((Products)list.get(position)).getProductID(), Integer.parseInt(holder.percentTextView.getText().toString())); 
       //shelfShareValues.put(((Products)list.get(position)).getShelfShareID()+"-"+((Products)list.get(position)).getCategoryID(), Integer.parseInt(holder.percentTextView.getText().toString())+"-"+((Products)list.get(position)).getProductID()); 
       //Info.getInstance().setShelfSharePercent(shelfShareValues); 

      } 
     }); 
     holder.productTextView.setText(((Products)list.get(position)).getProductName()); 

     return row; 
    } 

    public static HashMap<String, Integer> sendshelfShareValuesMap(){ 
     return shelfShareValues; 
    } 

    private static class shelfShareHolder{ 
     TextView productTextView; 
     SeekBar shelfShareSeekbar; 
     TextView percentTextView; 
    } 

} 

Answer 1

このような動作をさせるために、シークバーを最大何個も残しておくことができるという価値を持つポインタを持つことができます。そしてそれはそれぞれのドラッグで更新することができます。

以下のデモでは、あなたが私に言ったように、私たちがサーバーから得ている進歩の値が正しいと仮定しています。

ProgressModel.java：進捗情報を格納するpojoクラス。

public class ProgressModel { 

    //default value set to zero 
    public int progress = 0; 
} 

ListAdapter.java：必要な進捗ロジックを持つすべての項目を適応するダミーのアダプタクラス。

public class ListAdapter extends ArrayAdapter<ProgressModel> { 

    private Context mContext; 
    private ArrayList<ProgressModel> mProgressModels; 
    //set default to 100. 
    private int currentMaxProgress = 100; 


    public void setCurrentMaxProgress(int progress) { 
     currentMaxProgress = progress; 
    } 

    public ListAdapter(Context context, ArrayList<ProgressModel> progressModels) { 
     super(context, R.layout.list_item, progressModels); 
     mContext = context; 
     mProgressModels = progressModels; 
    } 

    @NonNull 
    @Override 
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) { 
     ViewHolder holder = new ViewHolder(); 
     if (convertView == null) { 
      convertView = LayoutInflater.from(mContext).inflate(R.layout.list_item, parent, false); 
      holder.seekBar = convertView.findViewById(R.id.seekBar); 
      convertView.setTag(holder); 
     } else { 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     final ProgressModel progressModel = mProgressModels.get(position); 

     holder.seekBar.setProgress(progressModel.progress); 


     final ViewHolder finalHolder = holder; 
     holder.seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { 
      @Override 
      public void onProgressChanged(SeekBar seekBar, int progress, boolean b) { 
       //check how much percentage user has dragged and if it exceeds the max limit, show a warning message, and send the seekbar back to its position 
       if (progress - progressModel.progress > currentMaxProgress) { 
        finalHolder.seekBar.setProgress(progressModel.progress); 
        Toast.makeText(mContext, "Cant go beyond " + currentMaxProgress + "%", Toast.LENGTH_LONG).show(); 
       } else { 
        progressModel.progress = progress; 
        notifyDataSetChanged(); 
        updateCurrentMaxProgress(); 
       } 
      } 

      @Override 
      public void onStartTrackingTouch(SeekBar seekBar) { 

      } 

      @Override 
      public void onStopTrackingTouch(SeekBar seekBar) { 

      } 
     }); 

     return convertView; 
    } 

    //update the currentMaxProgress by iterating over whole array 
    private void updateCurrentMaxProgress() { 
     int totalProgress = 0; 
     for(int i = 0; i < mProgressModels.size(); i++){ 

      totalProgress = totalProgress + mProgressModels.get(i).progress; 
     } 
     setCurrentMaxProgress(100 - totalProgress); 
    } 

    public static class ViewHolder { 
     SeekBar seekBar; 
    } 

} 

MainActivity.java：

public class MainActivity extends AppCompatActivity { 

    ListAdapter mListAdapter; 
    ArrayList<ProgressModel> mProgressModels = new ArrayList<>(); 

    @Override 
    protected void onCreate(@Nullable Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     ListView mListView = findViewById(R.id.list_view); 
     mListAdapter = new ListAdapter(this, mProgressModels); 
     mListView.setAdapter(mListAdapter); 
     loadDataFromServer(); 
    } 

    //assuming from server side it'll always be correct. 
    public void loadDataFromServer(){ 
     int totalProgress = 0; 
     for(int i = 1; i<=4; i++){ 
      int progress = i * 10; 
      ProgressModel progressModel = new ProgressModel(); 
      progressModel.progress = progress; 
      mProgressModels.add(progressModel); 
      totalProgress = totalProgress + progress; 
     } 
     mListAdapter.setCurrentMaxProgress(100 - totalProgress); 
     mListAdapter.notifyDataSetChanged(); 
    } 


}