如何在Android Eclipse中使用Recyclerview

Question

Please help me. Am using Eclipse ADT for development. I am facing a problem and i am not able to fix. I tried lots of answers in this stackoverflow but no one give a right solution. Let me explain my problem

1. I imported recyclerview project from this path

E:\\software\\adt-bundle-windows-x86_64-20140702\\adt-bundle-windows-x86_64-20140702\\sdk\\extras\\android\\support\\v7\\recyclerview

2. After imported, right click on recyclerview project--> properties --> android tab (From left pane) ---> make checked isLibrary checkbox

3. Then causally, i write a code in my class which extends the fragment

public class FragmentTab1 extends Fragment {

View view;

RecyclerView mRecyclerView;

TimelineAdapter timelineAdapter;

// ListView listView;
// RecyclerView mRecyclerView;
// RecyclerView.LayoutManager mLayoutManager;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    // Get the view from fragmenttab1.xml
    try {
        view = inflater.inflate(R.layout.fragmenttab1, container, false);

        mRecyclerView = (RecyclerView) view
                .findViewById(R.id.my_recycler_view);

        mRecyclerView.setHasFixedSize(false);
        mRecyclerView.setAdapter(new TimelineAdapter(getActivity()));
    } catch (Exception e) {
        // TODO: handle exception
        Log.e("FragOne error ", "" + e.getMessage());
        Log.e("FragOne error ", "" + e.getCause());
    }

    return view;
}

}

I have written adapter class and am 100% sure there is no errors.

When i am seeing the layout xml file then i am unble to see the recyclerview. Please refer the image attchment below

Please take a look about my xml file what i have written

<FrameLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:fab="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/light_grey"
tools:context=".LoginFollowUsers" >

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <android.support.v7.widget.RecyclerView
        android:id="@+id/my_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/letterimg"
        android:scrollbars="vertical" />
</LinearLayout>

After i am importing recyclerview project from support/v7/recyclerview i am not able to see any file in src folder.. can any one share the recyclerview project

Please help me out form this issue

Thanks in advance to all

Answer 1

You have to explicitly set LayoutManager for RecyclerView:

mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity));

Without this RecyclerView will no run.

Answer 2

You need JDK 8 for new android library set JDK and JRE and try it will work.!!!!

i had same issue but after installing JDK 8 it's resolved

Answer 3

You should add recylerView library into your project. Right click on your project in your project explorer > Select properties > navigate to android in left pane > now click on ADD button in right pane > After clicking add button you should add recylerView library.

You need to add following code in your java file while defining recylerView .

mRecyclerView = (RecyclerView) view
            .findViewById(R.id.my_recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(
                getActivity()));
mRecyclerView.setItemAnimator(new DefaultItemAnimator());

Answer 4

You need to add card view to show the recycler view items.I am sending sample code.try it once.

Import cardview project from this path

E:\\software\\adt-bundle-windows-x86_64-20140702\\adt-bundle-windows-x86_64-20140702\\sdk\\extras\\android\\support\\v7\\cardview

In your Frgment class:

RecyclerView recList = (RecyclerView) view.findViewById(R.id.cardList);
        recList.setHasFixedSize(true);
        LinearLayoutManager llm = new LinearLayoutManager(getActivity());
        llm.setOrientation(LinearLayoutManager.VERTICAL);
        recList.setLayoutManager(llm);

        ArrayList<MyBean> myListItems = new ArrayList<MyBean>();
        for (int i = 0; i < 5; i++) {

            myListItems.add(new MyBean("item:"+i));
        }

        MyRecycleAdapter  adapter = new MyRecycleAdapter(myListItems);
        recList.setAdapter(adapter);

MyAdapter.class

public class MyRecycleAdapter extends RecyclerView.Adapter {

private List<MyBean> myItemsList;

public MyRecycleAdapter  (List<MyBean> myItemsList) {
    this.myItemsList = myItemsList;
}

@Override
public int getItemCount() {
    return myItemsList.size();
}

@Override
public void onBindViewHolder(MyViewHolder viewHolder, int i) {

    MyBean ci = myItemsList.get(i);
    MyViewHolder.id.setText("" + ci.getId());


}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View itemView = LayoutInflater.from(viewGroup.getContext()).inflate(
            R.layout.mycardview, viewGroup, false);

    return new MyViewHolder(itemView);
}

public static class MyViewHolder extends RecyclerView.ViewHolder {

    protected TextView id;

    public MyViewHolder(View v) {
        super(v);
        id = (TextView) v.findViewById(R.id.textView1);

    }
}

}

and in your mycardview.xml

just take one textview.