So starten Sie die Animation in benutzerdefinierten Listenansicht

Question

Ich habe eine benutzerdefinierte listview, enthalten eine imageview und eine textview. Ich möchte, wenn ich imageview in diesem starten, starten Sie animation(rotate). Mein Problem ist: Beim Scrollen wurde die Animation gestoppt.

public class AdapterFoodGroups extends BaseAdapter { 

    private static LayoutInflater mInflater = null; 

    Context context; 
    int[] foodImagesId; 
    String[] foodNameList; 
    String[] foodDescriptions; 
    int[] foodTimes; 

    boolean[] loadAnimation; 

    public AdapterFoodGroups(Context context, String[] foodNameList, String[] foodDescriptions, int[] foodTimes, int[] foodImagesId) { 
     // TODO Auto-generated constructor stub 
     this.foodNameList = foodNameList; 
     this.foodDescriptions = foodDescriptions; 
     this.foodTimes = foodTimes; 
     this.foodImagesId = foodImagesId; 
     this.context = context; 

     loadAnimation = new boolean[foodNameList.length]; 
     for (boolean b: loadAnimation) { 
     b = false; 
     } 
    } 

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 
     // TODO Auto-generated method stub 

     final ViewHolder viewHolder; 

     final RotateAnimation anim = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5 f, Animation.RELATIVE_TO_SELF, 0.5 f); 
     anim.setInterpolator(new LinearInterpolator()); 
     anim.setRepeatCount(Animation.INFINITE); 
     anim.setDuration(800); 

     if (convertView == null) { 

     mInflater = (LayoutInflater) context. 
     getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = mInflater.inflate(R.layout.adapter_foodgroup, null); 

     viewHolder = new ViewHolder(); 

     viewHolder.txtFoodName = (TextView) convertView.findViewById(R.id.txtFoodNameGrid); 
     viewHolder.txtFoodDescription = (TextView) convertView.findViewById(R.id.txtFoodDescriptionGrid); 
     viewHolder.txtFoodTime = (TextView) convertView.findViewById(R.id.txtFoodTimeGrid); 
     viewHolder.ivFoodImage = (CircularImageView) convertView.findViewById(R.id.ivFoodImageGrid); 
     viewHolder.ivLoad = (ImageView) convertView.findViewById(R.id.ivLoad); 

     convertView.setTag(viewHolder); 
     } else { 
     viewHolder = (ViewHolder) convertView.getTag(); 
     } 

     if (this.foodImagesId[position] != 0) { 
     viewHolder.ivFoodImage.setImageResource(this.foodImagesId[position]); 
     viewHolder.ivFoodImage.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Toast.makeText(context, String.valueOf(position) + " = " + foodNameList[position], Toast.LENGTH_LONG).show(); 
      } 
     }); 
     } 
     if (this.foodNameList[position] != null) { 
     viewHolder.txtFoodName.setText(this.foodNameList[position]); 
     } 
     if (this.foodDescriptions[position] != null) { 
     viewHolder.txtFoodDescription.setText(this.foodDescriptions[position]); 
     } 
     if (this.foodTimes[position] != 0) { 
     viewHolder.txtFoodTime.setText(String.valueOf(this.foodTimes[position]) + " دقیقه"); 
     } 

     viewHolder.ivLoad.setImageResource(R.drawable.load); 
     viewHolder.ivLoad.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      viewHolder.ivLoad.setAnimation(anim); 
      viewHolder.ivLoad.startAnimation(anim); 
     } 
     }); 

     return convertView; 
    } 

    @Override 
    public int getCount() { 
     // TODO Auto-generated method stub 
     return foodNameList.length; 
    } 

    @Override 
    public Object getItem(int position) { 
     // TODO Auto-generated method stub 
     return position; 
    } 

    @Override 
    public long getItemId(int position) { 
     // TODO Auto-generated method stub 
     return position; 
    } 

    public static class ViewHolder { 
     public CircularImageView ivFoodImage; 
     public ImageView ivLoad; 
     public TextView txtFoodName; 
     public TextView txtFoodDescription; 
     public TextView txtFoodTime; 
    } 
} 

Answer 1

Try this:

diese

.... 
loadAnimation = new boolean[foodNameList.length]; 
     for (int i=0; i < loadAnimation.length; i++) { 
      loadAnimation[i] = false; 
     } 
.... 

In getView() Methode hinzufügen:

In Ihrem Adapter Konstruktor diese Zeilen ändern

... 

      viewHolder.ivLoad.setImageResource(R.drawable.load); 

      if(loadAnimation[position]){ 
       viewHolder.ivLoad.setAnimation(anim); 
       viewHolder.ivLoad.startAnimation(anim); 
      } else { 
       viewHolder.ivLoad.setAnimation(null); 
      } 

      viewHolder.ivLoad.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        viewHolder.ivLoad.setAnimation(anim); 
        viewHolder.ivLoad.startAnimation(anim); 
        loadAnimation[position] = true; 

       } 
      }); 

... 

Hoffe, es hilft!