Question

在我的活动中，我想在我的页面上方放置一个slideShow，然后在之后放置recycleview，为此，我在我的布局中编写了这段代码：

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#fff"
    android:orientation="vertical"
    android:padding="6dp">


    <android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:card_view="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        card_view:cardBackgroundColor="#fff"
        card_view:cardCornerRadius="3dp"
        card_view:cardElevation="0dp">

        <cn.trinea.android.view.autoscrollviewpager.AutoScrollViewPager
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="250dp" />
    </android.support.v7.widget.CardView>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </android.support.v7.widget.RecyclerView>
</LinearLayout>

这段代码的问题在于，当我运行活动时，只有循环视图滚动，我不想要，我想如果我向下滚动，整个页面向下滚动而不仅仅是回收。

如何让整页滚动？

Answer 1

执行此操作的三个步骤：

使用NestedScrollView替换您的scrollview，并将布局行为设置为app:layout_behavior="@string/appbar_scrolling_view_behavior"

将所有小部件保持在线性/相对布局下（因为嵌套滚动视图只接受一个子级） 3.使用以下代码创建CustomLinearLayoutManager.java：

public class CustomLinearLayoutManager extends LinearLayoutManager {

public CustomLinearLayoutManager(Context context, int orientation, boolean reverseLayout)    {
    super(context, orientation, reverseLayout);
}

private int[] mMeasuredDimension = new int[2];

@Override
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
                      int widthSpec, int heightSpec) {
    final int widthMode = View.MeasureSpec.getMode(widthSpec);
    final int heightMode = View.MeasureSpec.getMode(heightSpec);
    final int widthSize = View.MeasureSpec.getSize(widthSpec);
    final int heightSize = View.MeasureSpec.getSize(heightSpec);
    int width = 0;
    int height = 0;
    for (int i = 0; i < getItemCount(); i++) {
        measureScrapChild(recycler, i,
                View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
                View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
                mMeasuredDimension);

        if (getOrientation() == HORIZONTAL) {
            width = width + mMeasuredDimension[0];
            if (i == 0) {
                height = mMeasuredDimension[1];
            }
        } else {
            height = height + mMeasuredDimension[1];
            if (i == 0) {
                width = mMeasuredDimension[0];
            }
        }
    }
    switch (widthMode) {
        case View.MeasureSpec.EXACTLY:
            width = widthSize;
        case View.MeasureSpec.AT_MOST:
        case View.MeasureSpec.UNSPECIFIED:
    }

    switch (heightMode) {
        case View.MeasureSpec.EXACTLY:
            height = heightSize;
        case View.MeasureSpec.AT_MOST:
        case View.MeasureSpec.UNSPECIFIED:
    }

    setMeasuredDimension(width, height);
}

private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
                               int heightSpec, int[] measuredDimension) {
    View view = recycler.getViewForPosition(position);
    if (view != null) {
        RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();
        int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,
                getPaddingLeft() + getPaddingRight(), p.width);
        int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,
                getPaddingTop() + getPaddingBottom(), p.height);
        view.measure(childWidthSpec, childHeightSpec);
        measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;
        measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;
        recycler.recycleView(view);
    }
}

}

将适配器设置为您的recyclerview，如下所示：

CustomLinearLayoutManager customLinearLayoutManager = new CustomLinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
        updatesRecyclerView.setHasFixedSize(true);
        updatesRecyclerView.setLayoutManager(customLinearLayoutManager);
        updatesRecyclerView.setAdapter(yourAdapter);
        updatesRecyclerView.setNestedScrollingEnabled(false);

这就是它，它有效。

在scrollview里面的android-recycleview

1 个答案: