Question

我正在使用Android Recyclerview。在我的主要活动中，我有一个名为BlogViewHolder的公共静态类，该类扩展了RecyclerView.ViewHolder。当我在onstart方法中将此BlogViewHolder附加到FirebaseRecyclerAdapter时，它显示错误BlogViewHolder is not within its bound should extend androidx.recyclerview.widget.Recyclerview.ViewHolder以下是我的代码。我在做什么错

@Override
protected void onStart() {
    super.onStart();

   FirebaseRecyclerAdapter<Blog,BlogViewHolder> // here error is giving
}

//this is BlogViewHolder

public static class BlogViewHolder extends RecyclerView.ViewHolder{

    View mview;

    public BlogViewHolder(View itemView) {
        super(itemView);

        itemView =mview;
    }


    public void setDrop(String drop){

        TextView droplocation=(TextView) mview.findViewById(R.id.tvDrop);
        droplocation.setText(drop);
    }  

}

这就是我的Build.gradle文件中的内容

 implementation "com.android.support:support-v13:25.0.+"
implementation 'com.android.support:appcompat-v7:25.3.1'
implementation 'com.hbb20:ccp:1.7.2'
implementation 'com.android.support:design:25.0.0'
implementation 'com.google.android.gms:play-services:10.0.1'
implementation 'com.android.support:multidex:1.0.1'
implementation 'de.hdodenhof:circleimageview:2.1.0'
implementation 'com.android.support:recyclerview-v7:25.1.1'
implementation 'com.android.support:cardview-v7:25.1.1'
implementation 'com.github.krtkush:LinearTimer:v2.1.0'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'net.hockeyapp.android:HockeySDK:4.0.0'
implementation 'com.android.volley:volley:1.0.0'
implementation 'com.google.firebase:firebase-messaging:9.6.0'
implementation 'com.squareup.picasso:picasso:2.5.2'
implementation 'me.zhanghai.android.materialratingbar:library:1.0.2'
implementation 'com.google.maps.android:android-maps-utils:0.4'
implementation 'com.iarcuschin:simpleratingbar:0.1.5'
testCompile 'junit:junit:4.12'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.github.florent37:camerafragment:1.0.7' // Custom camera

implementation 'com.google.firebase:firebase-database:9.6.0' 
implementation 'com.firebaseui:firebase-ui-database:6.1.0'

Answer 1

即使我也有同样的错误

scanf()

将此扩展到您的 extends android.support.v7.widget.RecyclerView.ViewHolder 类并尝试，这对我有用

参数不在其范围内应扩展

1 个答案: