This article shares the specific code for displaying Android shopping classification effects for your reference. The specific content is as follows
public class SecondActivity extends AppCompatActivity{
private ViewPager mPager;
private RadioGroup mRadioGroup;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
(savedInstanceState);
setContentView();
mPager = findViewById();
mRadioGroup = findViewById();
(new FragmentPagerAdapter(getSupportFragmentManager()) {
@Override
public Fragment getItem(int position) {
Fragment fragment=null;
switch (position){
case 0:
fragment = new Afrag();
break;
case 1:
fragment = new Bfrag();
break;
case 2:
fragment = new Cfrag();
break;
}
return fragment;
}
@Override
public int getCount() {
return 3;
}
});
(new () {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (i){
case .r1:
(0);
break;
case .r2:
(1);
break;
case .r3:
(2);
break;
}
}
});
}
}
<LinearLayout xmlns:andro
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<.
android:
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="13"/>
<RadioGroup
android:
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal">
<RadioButton
android:
android:layout_width="wrap_content"
android:layout_weight="1"
android:layout_height="match_parent"
android:button="@null"
android:gravity="center"
android:text="front page"/>
<RadioButton
android:
android:layout_width="wrap_content"
android:layout_weight="1"
android:layout_height="match_parent"
android:button="@null"
android:gravity="center"
android:text="Classification"/>
<RadioButton
android:
android:layout_width="wrap_content"
android:layout_weight="1"
android:layout_height="match_parent"
android:button="@null"
android:gravity="center"
android:text="Shopping cart"/>
</RadioGroup>
</LinearLayout>
public class Afrag extends Fragment{
private RecyclerView mRecyclerView;
public String urlString="/tools/mockapi/6523/restaurants_offset_0_limit_4 ";
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = (getActivity(), , null);
mRecyclerView = ();
initData();
return view;
}
private void initData() {
OkHttps okHttps = ();
(urlString, new () {
@Override
public void onResponse(String json) { //Flower
PubuBean pubuBean = new Gson().fromJson(json,);
List<> results = ();
PubuAdapter pubuAdapter = new PubuAdapter(getActivity());
(results);
(pubuAdapter);
StaggeredGridLayoutManager manager = new StaggeredGridLayoutManager(2, );
(manager);
}
@Override
public void onFailure(Exception e) {
}
});
}
}
<LinearLayout xmlns:andro
android:layout_width="match_parent"
android:layout_height="match_parent">
<.
android:
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
public class PubuAdapter extends <>{
private Context mContext;
ArrayList<> list;
public PubuAdapter(Context context) {
mContext = context;
list = new ArrayList<>();
}
public void setDatas(List<> datas) {
(datas);
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = (mContext, , null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
((position).getName());
(mContext).load((position).getPic_url()).into();
}
@Override
public int getItemCount() {
return ();
}
public class ViewHolder extends {
ImageView mImageView;
TextView mTextView;
public ViewHolder(View itemView) {
super(itemView);
mImageView = ();
mTextView = (.t1);
}
}
}
public class Bfrag extends Fragment{
private RecyclerView mRecyclerView;
LeftAdapter adapter;
String urlString="/product/getCatagory";
String urlString2="/product/getProductCatagory";
private RecyclerView mRecyclerView2;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = (getActivity(), , null);//Category Page
mRecyclerView = (.rv1); //Left list
mRecyclerView2 = (.rv2); //right initData();
return view;
}
private void initData() {
OkHttps okHttps = ();
(urlString, new () {
@Override
public void onResponse(String json) { //Flower
LeftBean leftBean = new Gson().fromJson(json,);
List<> results = ();
adapter = new LeftAdapter(getActivity());
(results);
(adapter);
(new LinearLayoutManager(getActivity(),,false));
(new () {
@Override
public void onItemClick(int position) {
//(getActivity(),position+"",Toast.LENGTH_SHORT).show();
rigth(position);
}
});
}
@Override
public void onFailure(Exception e) {
}
});
}
public void rigth(int position){
HashMap<String, String> map = new HashMap<>();
("cid",position+1+"");
().doPost(urlString2,map,new () {
@Override
public void onResponse(String json) {
RightBean rightBean = new Gson().fromJson(json,);
List<> results = ();
RightAdapter rightAdapter = new RightAdapter(getActivity());
(results);
(rightAdapter);
(new GridLayoutManager(getActivity(),3));
}
@Override
public void onFailure(Exception e) {
}
});
}
}
<.
android:
android:layout_width="0dp"
android:layout_weight="2"
android:layout_height="match_parent"/>
<.
android:
android:layout_width="0dp"
android:layout_weight="10"
android:layout_height="match_parent"/>
</LinearLayout>
public class LeftAdapter extends <>{
private Context mContext;
ArrayList<> list;
public LeftAdapter(Context context) {
mContext = context;
list = new ArrayList<>();
}
public void setDatas(List<> datas) {
(datas);
}
public interface OnItemClickListener{ //Custom interface callback setting click event void onItemClick(int position);
}
private OnItemClickListener mOnItemClickListener;
public void setOnItemClickListener(OnItemClickListener onItemClickListener){
mOnItemClickListener=onItemClickListener;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = (mContext, , null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, int position) {
((position).getName());
(new () {
@Override
public void onClick(View view) {
int position1 = ();
(position1);
}
});
}
@Override
public int getItemCount() {
return ();
}
public class ViewHolder extends {
TextView mTextView;
public ViewHolder(View itemView) {
super(itemView);
mTextView = (.text1);
}
}
}
public class RightAdapter extends <>{
private Context mContext;
ArrayList<> list;
public RightAdapter(Context context) {
mContext = context;
list = new ArrayList<>();
}
public void setDatas(List<> datas) {
(datas);
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = (mContext, , null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
((position).getName());
(mContext).load((position).getList().get(position).getIcon()).into();
}
@Override
public int getItemCount() {
return ();
}
public class ViewHolder extends {
ImageView mImageView;
TextView mTextView;
public ViewHolder(View itemView) {
super(itemView);
mImageView = (.image1);
mTextView = (.text2);
}
}
}
public class OkHttps {
Handler handler;
private final OkHttpClient mOkHttpClient;
private static OkHttps mOkHttps;
private OkHttps() {
handler = new Handler(());
LoggingInterceptor loggingInterceptor = new LoggingInterceptor(); //Log Interceptor mOkHttpClient = new ()
.addInterceptor(loggingInterceptor) //Set log interceptor .connectTimeout(5000, )
.readTimeout(5000,)
.writeTimeout(5000,)
.build();
}
public static OkHttps getInstance(){
if (mOkHttps==null){
synchronized (){
if (mOkHttps==null){
return mOkHttps=new OkHttps();
}
}
}
return mOkHttps;
}
public interface OkCallback{
void onResponse(String json);
void onFailure(Exception e);
}
public void doPost(String url, Map<String,String> map, final OkCallback okCallback){
builder = new ();
if (map!=null){
for (String key:()){
(key,(key));
}
}
FormBody formBody = ();
final Request request = new ()
.post(formBody)
.url(url)
.build();
Call call = (request);
(new Callback() {
@Override
public void onFailure(Call call, final IOException e) {
if (okCallback!=null){
(new Runnable() {
@Override
public void run() {
(e);
}
});
}
}
@Override
public void onResponse(Call call, Response response) throws IOException {
try {
if (response!=null && ()){
final String json = ().string();
(new Runnable() {
@Override
public void run() {
if (okCallback!=null){
(json);
return;
}
}
});
}
}catch (IOException e){
();
}
if (okCallback!=null){
(new Exception("Network exception"));
}
}
});
}
public void doGet(String url, final OkCallback okCallback){
Request request = new ()
.url(url)
.build();
Call call = (request);
(new Callback() {
@Override
public void onFailure(Call call, final IOException e) {
if (okCallback != null) {
//Switch to main thread (new Runnable() {
@Override
public void run() {
(e);
}
});
}
}
@Override
public void onResponse(Call call, Response response) throws IOException {
try {
if (response != null && ()) {
final String json = ().string();
(new Runnable() {
@Override
public void run() {
if (okCallback != null) {
(json);
}
}
});
}
} catch (IOException e) {
();
}
}
});
}
}
rely
implementation ':gson:2.8.5' implementation '.okhttp3:okhttp:3.12.0' implementation ':recyclerview-v7:27.1.1' implementation ':glide:3.7.0'
//Interceptor
class LoggingInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
//Get the Request object Request request = ();
long t1 = ();
(" request = " + ("Sending request %s on %s%n%s",
(), (), ()));
//Get the Response object Response response = (request);
long t2 = ();
//How long does it take to get the request network? ("response " + ("Received response for %s in %.1fms%n%s",
().url(), (t2 - t1) / 1e6d, ()));
return response;
}
}
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