//重写ScrollViewpublic class NotifyingScrollView extends ScrollView {     /**     * @author Cyril Mottier     */    public interface OnScrollChangedListener {        void onScrollChanged(ScrollView who, int l, int t, int oldl, int oldt);    }    private OnScrollChangedListener mOnScrollChangedListener;    public NotifyingScrollView(Context context) {        super(context);    }    public NotifyingScrollView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public NotifyingScrollView(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);    }    @Override    protected void onScrollChanged(int l, int t, int oldl, int oldt) {        super.onScrollChanged(l, t, oldl, oldt);        if (mOnScrollChangedListener != null) {            mOnScrollChangedListener.onScrollChanged(this, l, t, oldl, oldt);        }    }    public void setOnScrollChangedListener(OnScrollChangedListener listener) {        mOnScrollChangedListener = listener;    }}

布局引用重写NotifyingScrollView控件

      <你的项目路径.notifyingscrollview android:id="@id/sv_personal" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/layout_bg" android:scrollbars="none">     
       
        你要显示的内容
               
      

activity使用引用

NotifyingScrollView sv_personal=(NotifyingScrollView)findViewById(R.id.sv_personal);sv_personal.setOnScrollChangedListener(mOnScrollChangedListener);private NotifyingScrollView.OnScrollChangedListener mOnScrollChangedListener = new NotifyingScrollView.OnScrollChangedListener() {public void onScrollChanged(ScrollView who, int l, int t, int oldl, int oldt) {int Height=Utility.dip2px(context, 130);float ratio =Math.max(Math.min(1, t/Height), 0);//导航控件linar_top.setAlpha(ratio* 255);}};

 int Height=Utility.dip2px(context, 130); 130为要滑动的高度