LinearLayoutManager layoutManager = new LinearLayoutManager(this);recycleView.setLayoutManager(layoutManager);这一行报空指针错误信息：
FATAL EXCEPTION: main
Process: com.create.bicdroid, PID: 4997
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.defaultOnMeasure(int, int)' on a null object reference
at android.support.v7.widget.RecyclerView$LayoutManager.onMeasure(RecyclerView.java:8144)
at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:2614)
at android.view.View.measure(View.java:18948)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5976)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1486)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:765)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:647)
at com.zhy.autolayout.AutoLinearLayout.onMeasure(AutoLinearLayout.java:43)
at android.view.View.measure(View.java:18948)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5976)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135)
at android.view.View.measure(View.java:18948)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5976)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1486)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:765)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:647)
at android.view.View.measure(View.java:18948)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5976)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at com.zhy.autolayout.AutoFrameLayout.onMeasure(AutoFrameLayout.java:64)
at android.view.View.measure(View.java:18948)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5976)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1486)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:765)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:647)
at com.zhy.autolayout.AutoLinearLayout.onMeasure(AutoLinearLayout.java:43)
at android.view.View.measure(View.java:18948)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5976)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2713)
at android.view.View.measure(View.java:18948)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2158)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1252)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1488)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1143)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6256)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:886)
at android.view.Choreographer.doCallbacks(Choreographer.java:698)
at android.view.Choreographer.doFrame(Choreographer.java:633)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:872)
at android.os.Handler.handleCallback(Handler.java:743)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:5665)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:822)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:712)
是在onmesure（）方法中报错，网上解释的比较合理的原因是 这句代码必须是oncreate方法中调用，因为要计算空间尺寸，但是别的类也是同样的用法，就不会出现该错误。
阅读(...) 评论()一个垂直RecyclerView嵌套两个横向RecyclerView,第一个可以正常滑动,第二个只要滑动到第四个item就立马包空指针崩溃
两个横向滑动的RecyclerView不会在同时显示,第一个可以完好的显示并且滑动顺畅,第二个却每次滑动到第四个item时报出holder中的对象为空.我把holder.img注销掉,只设置文字,也是如此.
垂直RecyclerView的Adapter
public class JingAdapter extends RecyclerView.Adapter&JingAdapter.HeiHei& {
private List&JingBean.ItemListBean&
private final T
private ScollA
public JingAdapter(Context context) {
this.context = context.getApplicationContext();
list = new ArrayList&&();
typeface = Typeface.createFromAsset(context.getAssets(), "Lobster-1.4.otf");
public HeiHei onCreateViewHolder(ViewGroup parent, int viewType) {
View view =
switch (viewType) {
view = LayoutInflater.from(context).inflate(R.layout.item_jing_header,parent,false);
view = LayoutInflater.from(context).inflate(R.layout.itme_jing,parent,false);
view = LayoutInflater.from(context).inflate(R.layout.item_other,parent,false);
view = LayoutInflater.from(context).inflate(R.layout.item_many,parent,false);
return new HeiHei(view);
public void onBindViewHolder(HeiHei holder, int position) {
if (position == 0) {
holder.headerDate.setTypeface(typeface);
holder.headerDate.setText(DateUtile.getInstance().getDate());
JingBean.ItemListBean bean = list.get(position-1);
String type = bean.getType();
if ("video".equals(type)){
holder.title.setText(bean.getData().getTitle());
holder.img.setImageURI(bean.getData().getCover().getFeed());
}else if ("banner".equals(type)){
holder.img.setImageURI(bean.getData().getImage());
}else if ("horizontalScrollCard".equals(type)){
holder.img.setImageURI(bean.getData().getItemList().get(0).getData().getImage());
}else if ("textCard".equals(type)){
holder.otherTitle.setText(bean.getData().getText());
if ("header1".equals(bean.getData().getType())){
holder.bt.setVisibility(View.GONE);
}else if ("videoCollectionWithCover".equals(type) || "videoCollectionOfFollow".equals(type)){
holder.manyImg.setImageURI(bean.getData().getHeader().getCover());
adapter = new ScollAdapter(context, bean.getData().getItemList());
holder.manyList.setAdapter(adapter);
public int getItemViewType(int position) {
if(position &= 1){
type = list.get(position-1).getType();
if ("video".equals(type) || "banner".equals(type) || "horizontalScrollCard".equals(type)){
}else if ("textCard".equals(type)){
}else if ("videoCollectionWithCover".equals(type) || "videoCollectionOfFollow".equals(type)){
public int getItemCount() {
return list.size()+1;
public class HeiHei extends RecyclerView.ViewHolder{
private final TextV
private final TextView headerD
private final TextView otherT
private final SimpleDraweeV
private final SimpleDraweeView manyI
private final ImageV
private final RecyclerView manyL
public HeiHei(View itemView) {
super(itemView);
title = (TextView)itemView.findViewById(R.id.jing_title);
otherTitle = (TextView)itemView.findViewById(R.id.other_title);
headerDate = (TextView)itemView.findViewById(R.id.header_date);
img = (SimpleDraweeView)itemView.findViewById(R.id.jing_img);
manyImg = (SimpleDraweeView)itemView.findViewById(R.id.many_img);
bt = (ImageView)itemView.findViewById(R.id.other_bt);
manyList = (RecyclerView)itemView.findViewById(R.id.many_list);
if (manyList != null){
manyList.setLayoutManager(new LinearLayoutManager(context,LinearLayoutManager.HORIZONTAL,false));
manyList.setAdapter(null);
public void addAll(JingBean.ItemListBean jingList){
list.add(jingList);
notifyDataSetChanged();
水平滑动的RecyclerView的Adapter
public class ScollAdapter extends RecyclerView.Adapter&ScollAdapter.ScollHolder& {
private List&JingBean.ItemListBean.DataBean.ItemListBeanX&
public ScollAdapter(Context context,List&JingBean.ItemListBean.DataBean.ItemListBeanX& list) {
this.list =
this.context = context.getApplicationContext();
public ScollHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == 1){
view = LayoutInflater.from(context).inflate(R.layout.item_scoll, parent, false);
view = LayoutInflater.from(context).inflate(R.layout.item_last,parent,false);
return new ScollHolder(view);
public void onBindViewHolder(ScollHolder holder, int position) {
JingBean.ItemListBean.DataBean.ItemListBeanX.DataBeanX dataBeanX = list.get(position).getData();
if ("ActionCard".equals(dataBeanX.getDataType())){
holder.more.setText(dataBeanX.getText());
holder.img.setImageURI(Uri.parse(dataBeanX.getCover().getFeed()));
holder.title.setText(dataBeanX.getTitle());
holder.catagory.setText(dataBeanX.getCategory()+dataBeanX.getDuration());
public int getItemViewType(int position) {
if (position == list.size()-1){
public int getItemCount() {
return list.size();
public class ScollHolder extends RecyclerView.ViewHolder{
private final SimpleDraweeV
private final TextV
private final TextV
private final TextV
public ScollHolder(View itemView) {
super(itemView);
img = (SimpleDraweeView)itemView.findViewById(R.id.scoll_img);
title = (TextView)itemView.findViewById(R.id.scoll_title);
catagory = (TextView)itemView.findViewById(R.id.scoll_class);
more = (TextView)itemView.findViewById(R.id.scoll_more);
AndroidRuntime: FATAL EXCEPTION: main
Process: .kaiyan, PID: 16949
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.facebook.drawee.view.SimpleDraweeView.setImageURI(android.net.Uri)' on a null object reference
.kaiyan.kai_adapter.ScollAdapter.onBindViewHolder(ScollAdapter.java:50)
.kaiyan.kai_adapter.ScollAdapter.onBindViewHolder(ScollAdapter.java:24)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6308)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6341)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5287)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5550)
at android.support.v7.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:270)
at android.support.v7.widget.GapWorker.flushTaskWithDeadline(GapWorker.java:324)
at android.support.v7.widget.GapWorker.flushTasksWithDeadline(GapWorker.java:337)
at android.support.v7.widget.GapWorker.prefetch(GapWorker.java:344)
at android.support.v7.widget.GapWorker.run(GapWorker.java:370)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5562)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:968)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:763
childview is null. please checkout your childview draw before you ontunch you can debug
谢谢谢谢,我已经解决了,非常感谢}