android material風格,Android Material風格的應用(二)--RecyclerView

添加RecyclerView

RecyclerView

工程源碼

添加對應的支援庫

compile 'com.android.support:recyclerview-v7:24.2.1'

compile 'com.android.support:cardview-v7:24.2.1'

添加 res/layout/recycler_view.xml

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:id="@+id/recycler_view"

android:clipToPadding="false"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:scrollbars="vertical"

app:layout_behavior="@string/appbar_scrolling_view_behavior">

在ListContentFragment.java TileContentFragment.java 和 CardContentFragment.java中

分别建立各自的ContentAdapter,在onCreateView方法中初始化RecyclerView相關的内容

@Override

public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

RecyclerView recyclerView = (RecyclerView)inflater.inflate(R.layout.recycler_view,container,false);

ContentAdapter adapter = new ContentAdapter(recyclerView.getContext());

recyclerView.setAdapter(adapter);

recyclerView.setHasFixedSize(true);

recyclerView.setLayoutManager(new GridLayoutManager(getActivity(),2));

return recyclerView;

}

public static class ViewHolder extends RecyclerView.ViewHolder{

public ImageView imageView;

public TextView textView;

public ViewHolder(LayoutInflater inflater,ViewGroup parent) {

super(inflater.inflate(R.layout.item_tile,parent,false));

imageView = (ImageView)itemView.findViewById(R.id.title_picture);

textView = (TextView)itemView.findViewById(R.id.title_title);

}

}

public static class ContentAdapter extends RecyclerView.Adapter{

private static final int LENGTH = 18;

private String[] names;

private Drawable[] avatars;

public ContentAdapter(Context context) {

Resources resources = context.getResources();

names = resources.getStringArray(R.array.places);

TypedArray a = resources.obtainTypedArray(R.array.places_picture);

avatars = new Drawable[a.length()];

for(int i = 0;i

avatars[i] = a.getDrawable(i);

}

a.recycle();

}

@Override

public int getItemCount() {

return LENGTH;

}

@Override

public void onBindViewHolder(ViewHolder holder, int position) {

holder.imageView.setImageDrawable(avatars[position % avatars.length]);

holder.textView.setText(names[position % names.length]);

}

@Override

public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

return new ViewHolder(LayoutInflater.from(parent.getContext()),parent);

}

}