当用户点击详细片段中的按钮时突出显示CaseListActivity中的项目

问题描述：

我正在使用android studio的主从布局。当页面第一次加载或用户点击菜单项时，我已设法突出显示菜单项。对于我的详细信息页面，我添加了两个按钮，“下一个”和“上一个”，使用户在用户点击菜单项时可以浏览菜单项。我的问题是如何让菜单项突出显示与详细信息页同步？我设法让正确项目突出显示，当我旋转设备。当用户点击详细片段中的按钮时突出显示CaseListActivity中的项目

MainFragment.java

public class Keputusan extends Fragment { 

    ... 

    @Override 
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
     super.onViewCreated(view, savedInstanceState); 

     final TextView button_prev = (TextView) view.findViewById(R.id.btn_prev); 
     TextView button_next = (TextView) view.findViewById(R.id.btn_nxt); 
     PageTransition.pageContents(this, CaseContent.getSize(), "formA", 
       getArguments().getString(ARG_ITEM_ID), button_next, button_prev); 
    } 

}

CaseListActivity.java

public class CaseListActivity extends BaseActivity { 

    int selectedItem = 0; //current item on list 

    ... 

     @Override 
     public void onBindViewHolder(final ViewHolder holder, final int position) { 

      holder.mItem = mValues.get(position); 
      holder.mContentView.setText(mValues.get(position).content); 
      holder.mIcon.setText(mValues.get(position).icon); 

      if(selectedItem == position || position == PageTransition.getItemPosition()) { 
       holder.mView.setSelected(true); 
       //Change text color when highlighted 
       holder.mContentView.setTextColor(ContextCompat.getColor(getApplicationContext(), 
         R.color.colorPrimary)); 
      } 
      else { 
       holder.mView.setSelected(false); 
       holder.mContentView.setTextColor(ContextCompat.getColor(getApplicationContext(), android.R.color.black)); 
      } 

      holder.mView.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        selectedItem = position; 
        onSelectedMenuItem(holder.mItem.id, v); 
        notifyDataSetChanged(); //make system recognize selectedItem = position 
       } 
      }); 
     } 
     ... 
    }

PageTransition.java

public class PageTransition { 

    public static final String TAG = PageTransition.class.getSimpleName(); 
    private static int pageId; 

    .... 

    public static void pageContents(final Fragment fragment, int totalPage, final String form, String id, TextView next, 
            TextView previous) { 
     //change string string to int 
     int pageID = Integer.parseInt(id); 
     int prevID = 0, nextID = 0; 

     if(pageID == 1) { 
      previous.setVisibility(View.GONE); //hide prev button onn 1st page 
      nextID = ++pageID; 

     } else if (pageID > 1 && pageID < totalPage) { 
      prevID = --pageID; 
      nextID = 2+pageID; 

     } else if (pageID == totalPage) { 
      next.setVisibility(View.GONE); //hide next button on last page 
      prevID = --pageID; 

     } 

     final int finalNextID = nextID; 
     next.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        Fragment _fragment = init(String.valueOf(finalNextID), form); 
        fragment.getFragmentManager().beginTransaction() 
          .replace(R.id.case_detail_container, _fragment).commit(); 
       } 
      }); 

     final int finalPrevID = prevID; 
     previous.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        Fragment _fragment = init(String.valueOf(finalPrevID), form); 
        fragment.getFragmentManager().beginTransaction() 
          .replace(R.id.case_detail_container, _fragment).commit(); 
       } 
      }); 

    } 

    //highlighted menu items in next & prev 
    public static int getItemPosition() { 
     //since position starts with "1" 
     Log.d(TAG, "getId: pageID " + pageId); 
     return pageId - 1 ; 
    } 

    .... 
}

答

我无法找到关于如何从其他活动直接访问回收站视图的解决方案。相反，我调用CaseListActivity（与回收者视图相同的文件）中的下一个&预先按钮，然后在ViewHolder内部，我设置了NextClick 012LLprev onClickedListeners。我不知道这是否是正确的方法......但它完成了这项工作。

当用户点击详细片段中的按钮时突出显示CaseListActivity中的项目

相关推荐