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我有一个RecyclerView作为一个项目,在另一个垂直RecyclerView卡内。RecyclerView滚动和高度调节问题
我有滚动和调节儿童回收视图高度(灵活高度)问题。
有没有人遇到类似的问题?变通办法?
我有一个RecyclerView作为一个项目,在另一个垂直RecyclerView卡内。RecyclerView滚动和高度调节问题
我有滚动和调节儿童回收视图高度(灵活高度)问题。
有没有人遇到类似的问题?变通办法?
我的解决方案:所有的 首先设置你的孩子的回收视图高度WRAP_CONTENT
<android.support.v7.widget.RecyclerView
android:id="@+id/child_recycler_view»
android:layout_width="match_parent"
android:layout_height="wrap_content">
之后,你应该创建自定义布局管理器类,从LinearLayoutManager扩展它和重写onMeasure()和measureScrapChild()方法。
我的自定义类:
import android.content.Context;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
public class MyLinearLayoutManager extends LinearLayoutManager {
public MyLinearLayoutManager(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++) {
if (getOrientation() == HORIZONTAL) {
measureScrapChild(recycler, i,
View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
heightSpec,
mMeasuredDimension);
width = width + mMeasuredDimension[0];
if (i == 0) {
height = mMeasuredDimension[1];
}
} else {
measureScrapChild(recycler, i,
widthSpec,
View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
mMeasuredDimension);
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);
recycler.bindViewToPosition(view, 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);
}
}
}
最后,设置你的孩子的回收布局管理器已经创建MyLinearLayoutManager
MyLinearLayoutManager manager = new MyLinearLayoutManager(mContext,LinearLayoutManager.VERTICAL,false);
holder.childList.setLayoutManager(manager);
holder.childList.setNestedScrollingEnabled(false);
holder.childList.setAdapter(adapter);
谢谢你的帮助了很多 –
您使用的是什么样的支持libary? –
如果你显示你的代码,我们可以更好地使用 –