RecyclerView und CardView Klicken Sie auf listener-Implementierung

Ich bewegte mich gerade in die android-RecyclerView und CardViewand ... und realisiert recyclerview don ' T haben eine option für die Onclick-listner, aber nach dem implementieren dieser Funktion, ich weiß nur nicht sehen, ohne Ergebnis.

hören ist mein code und Layout:

MainActivity:

public class MainActivity extends AppCompatActivity {

    //private usefulSites_RecyclerView_Adapter mAdapter;
    final Context context = this;
    private RecyclerView mRecyclerView;
    private StaggeredGridLayoutManager mGridLayoutManager;
    private RecyclerViewAdapter mAdapter;
    private String[] mList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onBackPressed();
            }
        });
        //使用CollapsingToolbarLayout必须把title设置到CollapsingToolbarLayout上，设置到Toolbar上则不会显示
        CollapsingToolbarLayout mCollapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar_layout);
        mCollapsingToolbarLayout.setTitle("test");
        //通过CollapsingToolbarLayout修改字体颜色
        mCollapsingToolbarLayout.setExpandedTitleColor(Color.WHITE);//设置还没收缩时状态下字体颜色
        mCollapsingToolbarLayout.setCollapsedTitleTextColor(Color.GREEN);


        //mList = getResources().getStringArray(R.array.numbers);

        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
        mGridLayoutManager = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL);
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());
        mRecyclerView.setLayoutManager(mGridLayoutManager);
        mAdapter = new RecyclerViewAdapter(getApplicationContext());
        mRecyclerView.setAdapter(mAdapter);


    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        //Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        //Handle action bar item clicks here. The action bar will
        //automatically handle clicks on the Home/Up button, so long
        //as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

RecyclerViewAdapter

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {

    private Context mContext;
    private String [] mSiteTitle,mSiteLink;
    private int [] mThumbnail;

    public RecyclerViewAdapter(Context contexts, String[] list) {
        this.mContext = contexts;
        this.mSiteTitle = list;
    }
    public RecyclerViewAdapter(Context contexts) {
        this.mContext = contexts;
        initList();
    }
    private void initList(){

        UsfulSite_init mInit=new UsfulSite_init();
        mSiteTitle= mInit.initSiteTitle();
        mSiteLink=mInit.initSiteLink();
        mThumbnail=mInit.initThumbnail();


    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        View itemView = inflater.inflate(R.layout.usful_sites_card_view, parent, false);
        return new ViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.sTitle.setText(mSiteTitle[position]);
        holder.sLink.setText(mSiteTitle[position]);
        holder.sImage.setImageResource(mThumbnail[position]);


        holder.setClickListener(new ItemClickListener() {
            @Override
            public void onClick(View view, int position, boolean isLongClick) {
                if (isLongClick) {
                    Toast.makeText(mContext, "#" + position + " - " + mSiteTitle[position] + " (Long click)", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(mContext, "#" + position + " - " + mSiteTitle[position], Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    @Override
    public int getItemCount() {
        return mSiteTitle.length;
    }

    public static class ViewHolder extends RecyclerView.ViewHolder
            implements View.OnClickListener, View.OnLongClickListener{
        private TextView sTitle,sLink;
        private ImageView sImage;
        private ItemClickListener clickListener;

        public ViewHolder(View itemView) {
            super(itemView);
            sTitle = (TextView)itemView.findViewById(R.id.useful_sites_Title);
            sLink=(TextView)itemView.findViewById(R.id.useful_sites_Link);
            sImage=(ImageView)itemView.findViewById(R.id.useful_sites_thumbnail);
            itemView.setTag(itemView);
            itemView.setOnClickListener(this);
            itemView.setOnLongClickListener(this);


        }

        public void setClickListener(ItemClickListener itemClickListener) {
            this.clickListener = itemClickListener;
        }

        @Override
        public void onClick(View view) {
            clickListener.onClick(view, getPosition(), false);
        }

        @Override
        public boolean onLongClick(View view) {
            clickListener.onClick(view, getPosition(), true);
            return true;
        }
    }
}

Activity_main.xml:

<android.support.design.widget.CoordinatorLayout
android:id="@+id/coordinatorLayout"

xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout

    android:layout_width="match_parent"
    android:layout_height="256dp"
    android:fitsSystemWindows="true">
    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"

        app:contentScrim="#30469b"
        app:expandedTitleMarginStart="48dp"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">
        <ImageView

            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/a"
            app:layout_collapseMode="parallax"
            app:layout_collapseParallaxMultiplier="0.7"  />
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_collapseMode="pin" />
    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbars="none" />
</LinearLayout>

CardView Layout.xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_margin="5dp"
card_view:cardCornerRadius="5dp"
card_view:cardElevation="4dp"
android:layout_height="match_parent">

<RelativeLayout

    android:id="@+id/mainHolder"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/useful_sites_thumbnail"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:scaleType="centerCrop"
        android:tint="@color/photo_tint"
        android:layout_centerInParent="true"
        />

    <TextView
        android:id="@+id/useful_sites_Title"
        android:gravity="center"
        android:background="?android:selectableItemBackground"
        android:focusable="true"
        android:clickable="true"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:textSize="24sp"
        android:layout_centerInParent="true"
        android:textColor="@android:color/white"
        />
    <TextView
        android:id="@+id/useful_sites_Link"
        android:gravity="center"
        android:background="?android:selectableItemBackground"
        android:focusable="true"
        android:clickable="true"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:textSize="24sp"
        android:layout_centerInParent="true"
        android:textColor="@android:color/white"
        android:visibility="gone"
        />
</RelativeLayout>

Getestet habe ich andere Wege für clickListner in der RV Hintern, ich blieb nur in diesem.
können einige einen Blick auf meinen code und führe mich, Etwas über diese.

CardView Layout.xml: ist die gleiche wie Activity_main.xml:
oh, my Bad, Sie zu ändern, tnx.
Hier ist eine frühere Antwort auf deine Frage : link

InformationsquelleAutor 123 | 2015-09-08

Wenn Sie implementieren möchten onClick für jeden cardview, können Sie dies so tun:
in Ihrer XML:

<android.support.v7.widget.CardView
    android:id="@+id/card_view">

    ...

</android.support.v7.widget.CardView>

Dann in Ihrer adapter-code:

public static class ViewHolder extends RecyclerView.ViewHolder {
        private CardView cardView;

        public ViewHolder(View itemView) {
            super(itemView);
            cardView = (CardView) itemView.findViewById(R.id.card_view);
        }
}

...

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    holder.cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //implement onClick
                System.out.println("Clicked");
            }
        });
    }
}

tnx, aber nicht zeigen mir kein Ergebnis :(( !!!
es funktioniert nicht 🙁

InformationsquelleAutor Norutan

Übergeben werden können Hörer aus dem Adapter ViewHolder, und hören Sie Ereignisse gibt, und Sie können auch pass-Ereignis von Adapter, um Ihre Aktivität oder wo Sie diesen Adapter

public class AlbumAdapter extends RecyclerView.Adapter<AlbumAdapter.ViewHolder> {

private List<Album> albums;
private Context context;
public AlbumAdapterClickListener recListener;

public AlbumAdapter(List<Album> albums, Context context, AlbumAdapterClickListener recListener) {
    this.albums = albums;
    this.context = context;
    this.recListener = recListener;
}

public interface AlbumAdapterClickListener {
    void recyclerViewClick(String albumID);
}


public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

    public TextView title;
    public TextView count;
    public ImageView picture;
    public String albumID;
    public AlbumClickListener listener;

    //listener passed to viewHolder
    public interface AlbumClickListener {
        void albumOnClick(String albumID);
    }

    public ViewHolder(View v, AlbumClickListener listener) {
        super(v);
        title = (TextView) v.findViewById(R.id.album_list_title);
        count = (TextView) v.findViewById(R.id.album_list_count);
        picture = (ImageView) v.findViewById(R.id.album_list_picture);

        this.listener = listener;
        v.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        listener.albumOnClick(this.albumID);
    }
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    return new ViewHolder(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.album_list_item, viewGroup, false),
            new ViewHolder.AlbumClickListener() {
                @Override
                public void albumOnClick(String albumID) {
                    //TODO show gridView with current albumID
                    Log.e("fdf", albumID);
                    //albumID going to Fragment
                    recListener.recyclerViewClick(albumID);
                }

            });
}


@Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
    Album album = albums.get(i);
    viewHolder.albumID = album.getId();
    viewHolder.count.setText(album.getPhotoCount());
    viewHolder.title.setText(album.getName());
    Picasso.with(context).load(albums.get(i).getCoverURL()).placeholder(R.mipmap.fb_place_holder).resize(140, 140)
            .centerCrop().into(viewHolder.picture);
}

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

}

Ich ging mit diesem. Obwohl ich nur wiederverwendet das clicklistener in den viewholder, anstatt seine eigenen.

InformationsquelleAutor Dmitrijs

1

Die Antwort von VLeong funktioniert großartig für mich! Aber ein wenig Aufklärung. Diese :
holder.cardView.setOnClickListener(new View.OnClickListener() {
müssen geändert werden :
```
holder.itemView.setOnClickListener(new View.OnClickListener(){
```
InformationsquelleAutor Victor Dumont

Können Sie Ihre Zuhörer in den Konstruktor der View-Halter.

public ViewHolder(View v) {
    super(v);
    title = (TextView) v.findViewById(R.id.album_list_title);
    count = (TextView) v.findViewById(R.id.album_list_count);
    picture = (ImageView) v.findViewById(R.id.album_list_picture);

    v.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //Handel yout event here
            }
        });
}

InformationsquelleAutor Davidgh

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