实体类
创建实体类存放item名称、图片和所要跳转对应的活动
public class ModelMainItem {
private String name;
private int image;
public ModelMainItem(String name, int image) {
this.name = name;
this.image = image;
}
public ModelMainItem(String name, int image, Class activity) {
this.name = name;
this.image = image;
this.activity = activity;
}
public Class getActivity() {
return activity;
}
public void setActivity(Class activity) {
this.activity = activity;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getImage() {
return image;
}
public void setImage(int image) {
this.image = image;
}
Activity
使用集合添加添加所有跳转的活动
private List<ModelMainItem> demoClassifyData;
demoClassifyData = new ArrayList<>();
demoClassifyData.add(new ModelMainItem("MarkdownEdit", R.drawable.muz, MarkdownEditActivity.class));
demoClassifyData.add(new ModelMainItem("MarkdownShow", R.drawable.muz, MarkdownShowActivity.class));
设置RecyclerView列数
private int mColumnCount = 3;
判断设置的列数是否<=1;
if (mColumnCount <= 1) {
markdownClassify.setLayoutManager(new LinearLayoutManager(this));
} else {
markdownClassify.setLayoutManager(new GridLayoutManager(this, mColumnCount));
}
创建适配器
public class AdapterRecyclerViewMain extends RecyclerView.Adapter<AdapterRecyclerViewMain.ViewHolder> {
private int mScreenWidth, mItemWidth, mItemHeight;
private Context context;
private List<ModelMainItem> mValues;
public AdapterRecyclerViewMain(List<ModelMainItem> items) {
mValues = items;
}
@Override
public AdapterRecyclerViewMain.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recyclerview_main, parent, false);
context = view.getContext();
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.mItem = mValues.get(position);
holder.tvName.setText(holder.mItem.getName());
Glide.with(context).
load(holder.mItem.getImage()).
diskCacheStrategy(DiskCacheStrategy.RESULT).
thumbnail(0.5f).
priority(Priority.HIGH).
placeholder(R.drawable.muz).
error(R.drawable.muz).
fallback(R.drawable.muz).
into(holder.imageView);
holder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
skipActivity(context, holder.mItem.getActivity());
}
});
}
/**
* Activity 跳转
*
* @param context
* @param goal
*/
public static void skipActivity(Context context, Class<?> goal) {
Intent intent = new Intent(context, goal);
context.startActivity(intent);
}
@Override
public int getItemCount() {
return mValues.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public final View mView;
public ModelMainItem mItem;
@BindView(R.id.imageView)
ImageView imageView;
@BindView(R.id.tv_name)
TextView tvName;
public ViewHolder(View view) {
super(view);
mView = view;
ButterKnife.bind(this, view);
}
}
xml布局
<android.support.v7.widget.CardView 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="wrap_content"
android:paddingEnd="0dp"
android:paddingLeft="0dp"
android:paddingRight="0dp"
android:paddingStart="0dp"
app:cardCornerRadius="4dp"
app:cardElevation="3dp">
<LinearLayout 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:background="@color/white"
android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView
android:id="@+id/imageView"
android:layout_width="80dp"
android:layout_margin="10dp"
android:layout_height="80dp"
app:srcCompat="@drawable/muz" />
<TextView
android:textSize="10dp"
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:gravity="center_horizontal"
android:textColor="@color/black"
android:text="TextView" />
</LinearLayout>
</android.support.v7.widget.CardView>
绑定适配器
AdapterRecyclerViewMain recyclerViewMain = new AdapterRecyclerViewMain(demoClassifyData);
demoClassify.setAdapter(recyclerViewMain);