Android 清理项目后出现错误

logcat在清理项目后出现以下错误。之前项目运行良好，没有发现类似错误。我需要帮助解决此问题。以下是logcat错误。代码是用Kotlin语言编写的，似乎错误在onBindViewHolder中

08-02 12:52:41.370 16984-16984/? E/libprocessgroup: failed to make and chown /acct/uid_10058: Read-only file system
08-02 12:53:10.883 16984-16984/com.malik_tayyab.testapp E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.malik_tayyab.testapp, PID: 16984
    java.lang.IllegalArgumentException: Path must not be empty.
        at com.squareup.picasso.Picasso.load(Picasso.java:297)
        at com.maliktayyab.testapp.Newsfeedholder.bind(Newsfeedholder.kt:15)
        at com.maliktayyab.testapp.FragmentNewsfeed.onBindViewHolder(FragmentNewsfeed.kt:48)
        at com.maliktayyab.testapp.FragmentNewsfeed.onBindViewHolder(FragmentNewsfeed.kt:21)
        at com.mobymagic.easyfirebaselist.database.FirebaseDbAdapter.onBindViewHolder(FirebaseDbAdapter.kt:22)
        at com.firebase.ui.database.FirebaseRecyclerAdapter.onBindViewHolder(FirebaseRecyclerAdapter.java:118)
        at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6482)
        at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6515)
        at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5458)
        at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5724)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5563)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5559)
        at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2229)
        at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1556)
        at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1516)
        at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:608)
        at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3693)
        at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3410)
        at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3962)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1767)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:443)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
        at android.view.View.layout(View.java:15671)
        at android.view.ViewGroup.layout(ViewGroup.java:5038)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2086)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1843)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
        at an

我的Newsfeed Holder类在logcat中

class Newsfeedholder(view:View):RecyclerView.ViewHolder(view) {
    fun bind(model : News)}
   itemView.NewsTitleTextView.text = model.title
        Picasso.with(itemView.context).load(model.thumbnail).into(itemView.NewsThumbnailImageView)
    }
}

我的FragmentNewsfeed firebasefragment类

class FragmentNewsfeed : FirebaseDbListFragment<News,Newsfeedholder>() {
        override fun getDataClass(): Class<News> {
                return News::class.java

        }

    override fun getEmptyStyle(): EmptyStyle {
                return EmptyStyle(R.mipmap.ic_launcher, "No News in database yet")

        }

        override fun getErrorStyle(error: DatabaseError): ErrorStyle {
                return ErrorStyle(R.mipmap.ic_launcher, "An Error occurred while fetching news")

        }

        override fun getProgressStyle(): ProgressStyle {
                return ProgressStyle(progressMessage = "Loading....")

        }

        override fun getQuery(): Query {
                return FirebaseDatabase.getInstance().reference.child("newsfeed").limitToLast(100)

        }

        override fun onBindViewHolder(viewHolder: Newsfeedholder, key: String, model: News) {
                viewHolder.bind(model = model)

        }
        override fun onCreateViewHolder(inflater: LayoutInflater, viewGroup: ViewGroup): Newsfeedholder {
                val new = inflater.inflate(R.layout.newsfeed_fragment, viewGroup, false)
                return Newsfeedholder(new)
        }


        override fun onItemClicked(viewHolder: Newsfeedholder, key: String, model: News) {
        FinestWebView.Builder(activity).show(model.link)

        }

        override fun setupRecyclerView(recyclerView: RecyclerView) {
        recyclerView.addItemDecoration(DividerItemDecoration(activity,DividerItemDecoration.VERTICAL))
        recyclerView.layoutManager = LinearLayoutManager(activity)

        }


    }

class FragmentNewsfeed:FirebaseDbListFragment（）{
重写getDataClass（）：类{
返回新闻：：class.java
}
覆盖有趣的getEmptyStyle（）：EmptyStyle{
返回EmptyStyle（R.mipmap.ic_启动器，“数据库中还没有新闻”）
}
覆盖getErrorStyle（错误：DatabaseError）：ErrorStyle{
返回ErrorStyle（R.mipmap.ic_启动器，“获取新闻时出错”）
}
重写有趣的getProgressStyle（）：ProgressStyle{
返回ProgressStyle（progressMessage=“加载…”）
}
重写fun getQuery（）：查询{
返回FirebaseDatabase.getInstance（）.reference.child（“newsfeed”）.limitToLast（100）
}
覆盖BindViewHolder（viewHolder:Newsfeedholder，关键字：字符串，型号：News）{
viewHolder.bind（model=model）
}
override fun onCreateViewHolder（充气机：布局充气机，视图组：视图组）：Newsfeedholder{
val new=充气机。充气（R.layout.newsfeed_片段，视图组，false）
返回新闻提要夹（新）
}
已单击（视图持有者：Newsfeedholder，关键字：字符串，型号：News）{
FinestWebView.Builder（activity.show）（model.link）
}
覆盖有趣的设置recyclerView（recyclerView:recyclerView）{
recyclerView.addItemDecoration（DividerItemDecoration（活动，DividerItemDecoration.垂直））
recyclerView.layoutManager=LinearLayoutManager（活动）
}
}

您的

model.thumbnail

似乎返回空。检查这个，它可能会帮助你

java.lang.IllegalArgumentException:路径不能为空

您可以看到这个错误。您的路径为空，需要非空路径：

model。缩略图是空字符串。毕加索加载非空路径。
Picasso.with（itemView.context）.load（model.thumbnail）.into（itemView.NewsThumbnailImageView）
尝试一次使缓存失效/重新启动android studio，在文件选项中显示，但链接已全部设置，为什么在工作至少一个月后出现这种情况？我认为您可以显示日志或调试。我可以肯定这条路是空的。或者可以检查此链接是否为空，您可以显示另一个默认图像。您可以这样做。只需创建一个if-else语句，该语句表示if
model.thumboil.isEmpty（）
，然后从您的drawable设置一个默认图像。否则，请使用Picasso.load（）。