在屏幕底部隱藏linearlayout，而列表視圖滾動

Question

我有一個自定義列表視圖和線性佈局與在屏幕底部的textview。我已經實現了一個OnScrollListener來在滾動時隱藏操作欄和線性佈局，並在滾動完成後返回。該Actionbar是隱藏順利沒有任何閃爍和口吃，但與linearlayout不是。我使用動畫來隱藏佈局，但我無法完全實現。我需要的佈局應該像twitter應用程序一樣隱藏底部佈局在滾動時平滑隱藏。請幫忙。

mViews.lists.setOnScrollListener(new AbsListView.OnScrollListener() { 
     int mLastFirstVisibleItem = 0; 
     @Override 
     public void onScrollStateChanged(AbsListView view, int scrollState) { 

     } 

     @Override 
     public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { 
      android.support.v7.app.ActionBar actionBar = getSupportActionBar(); 
      if (view.getId() == mViews.lists.getId()) { 
       final int currentFirstVisibleItem = mViews.lists.getFirstVisiblePosition(); 

       if (currentFirstVisibleItem > mLastFirstVisibleItem) { 
        // getSherlockActivity().getSupportActionBar().hide(); 
        if (actionBar != null) { 
         actionBar.hide(); 
         mViews.linear.startAnimation(animHide); 
         mViews.linear.setVisibility(View.GONE); 



        } 
       } else if (currentFirstVisibleItem < mLastFirstVisibleItem) { 
        // getSherlockActivity().getSupportActionBar().show(); 
        actionBar.show(); 
       mViews.linear.startAnimation(animShow); 
        mViews.linear.setVisibility(View.VISIBLE); 



       } 

       mLastFirstVisibleItem = currentFirstVisibleItem; 
      } 
     } 
    }); 

隱藏和顯示XML：

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" 
android:fillAfter="true"> 
<scale 
    android:fromYScale="1.0" 
    android:interpolator="@android:anim/linear_interpolator" 
    android:toYScale="0.0" /> 
</set> 



<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" 
android:fillAfter="true" > 

<scale 
    android:fromYScale="0.0" 
    android:interpolator="@android:anim/linear_interpolator" 
    android:toYScale="1.0" /> 
</set> 

Answer 1

試試這個：

lv.setOnScrollListener(new AbsListView.OnScrollListener() { 
     @Override 
     public void onScrollStateChanged(AbsListView view, int scrollState) { 

      if(scrollState == SCROLL_STATE_TOUCH_SCROLL){ 

      //Paste here the code for hiding the layout 

      }else{ 

      //Paste here the code for showing the layout 

      } 
     } 

     @Override 
     public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { 

     } 
    });