Android - Пользовательские состояния со строковым значением

Question

Я следую руководству по адресу this site, чтобы реализовать пользовательское состояние для списка состояний. Он работает с логическими атрибутами, но не со строковыми атрибутами.

Это мой исходный код:

• Государственно-лист:

• Атрибуты:

<declare-styleable name="CategoryIconView"> 
      <attr name="category_id" format="string"/> 
     </declare-styleable> 

• на заказ Вид:

  public class CategoryIconView extends ImageView { 
  
  // this is used when we want to merge our state with the ones from the system 
  private static final int[] CATEGORY_ID_STATE_SET = {R.attr.category_id}; 
  
  String categoryID; 
  public CategoryIconView(Context context) { 
      super(context); 
  } 
  
  public CategoryIconView(Context context, AttributeSet attrs) { 
      super(context, attrs); 
  } 
  
  public CategoryIconView(Context context, AttributeSet attrs, int defStyle) { 
      super(context, attrs, defStyle); 
  } 
  
  @Override 
  public int[] onCreateDrawableState(int extraSpace) { 
      LogUtils.d(getClass().getSimpleName(), "category ID " + categoryID); 
      final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); 
      if (categoryID != null) { 
       mergeDrawableStates(drawableState, CATEGORY_ID_STATE_SET); 
      } 
      return drawableState; 
  } 
  
  // this method will be used when you will need to set your image button state in the code 
  public void setCategoryID(String categoryId){ 
      this.categoryID = "Three"; 
      refreshDrawableState(); 
  } 
  } 
  

Answer 1

На самом деле вам не хватает некоторые заявления, ниже найти решение этой

public class CategoryIconView extends ImageView { 

     // this is used when we want to merge our state with the ones from the system 
     private static final int[] CATEGORY_ID_STATE_SET = {R.attr.category_id}; 

     String categoryID; 

     public CategoryIconView(Context context) { 
      super(context); 
     } 

     public CategoryIconView(Context context, AttributeSet attrs) { 
      super(context, attrs); 
// R.styleable.CustomStates is the id of the custom state and CustomStates it's the name of your styleable 
     // from attributes.xml 
     TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CategoryIconView, 0, 0); 

     // R.styleable.CustomStates_has_new_data is an ID that is created automatically when you create your 
     // custom state list in attributes.xml 
     categoryID = typedArray.getString(R.styleable.CategoryIconView_category_id); 
     } 

     public CategoryIconView(Context context, AttributeSet attrs, int defStyle) { 
      super(context, attrs, defStyle); 
      // R.styleable.CustomStates is the id of the custom state and CustomStates it's the name of your styleable 
      // from attributes.xml 
      TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CategoryIconView, 0, 0); 

      // R.styleable.CustomStates_has_new_data is an ID that is created automatically when you create your 
      // custom state list in attributes.xml 
      categoryID = typedArray.getString(R.styleable.CategoryIconView_category_id); 
     } 

     @Override 
     public int[] onCreateDrawableState(int extraSpace) { 
      Log.d(getClass().getSimpleName(), "category ID " + categoryID); 
      final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); 
      if (categoryID != null) { 
       mergeDrawableStates(drawableState, CATEGORY_ID_STATE_SET); 
      } 
      return drawableState; 
     } 

     // this method will be used when you will need to set your image button state in the code 
     public void setCategoryID(String categoryId) { 
      this.categoryID = "Three"; 
      refreshDrawableState(); 
     } 
    }