Java 如何从RecyclerAdapter获取数据?
我有RecyclerView和RecyclerAdapter,其中有两个Java 如何从RecyclerAdapter获取数据?,java,android,android-recyclerview,android-arrayadapter,Java,Android,Android Recyclerview,Android Arrayadapter,我有RecyclerView和RecyclerAdapter,其中有两个ArraylistingRidingFinal和ArrayList dependingRidingsArrayLists,还有一个开关mySwitch 下面是适配器 public class recyclerAdapterIngridients extends RecyclerView.Adapter<recyclerAdapterIngridients.myViewHolder>{ Context co
ArraylistingRidingFinal
和ArrayList dependingRidings
ArrayLists,还有一个开关mySwitch
下面是适配器
public class recyclerAdapterIngridients extends RecyclerView.Adapter<recyclerAdapterIngridients.myViewHolder>{
Context context;
int intege;
String[] glux;
public static ArrayList<String> ingridientsfinal;
public static ArrayList<String> dependingridients;
public static class myViewHolder extends RecyclerView.ViewHolder{
@SuppressLint("UseSwitchCompatOrMaterialCode")
Switch mySwitch;
TextView ingridtitle, avel;
public myViewHolder(@NonNull View itemView) {
super(itemView);
ingridtitle=itemView.findViewById(R.id.ingridientTemple);
mySwitch=itemView.findViewById(R.id.switch1);
avel=itemView.findViewById(R.id.depend);
mySwitch.setOnClickListener(new View.OnClickListener() {
@SuppressLint("SetTextI18n")
@Override
public void onClick(View view) {
if(!mySwitch.isChecked()){
mySwitch.setChecked(false);
for (int i=0; i<dependingridients.size(); i++){
if(getAdapterPosition()==i) {
String h = orderPlain.priceView.getText().toString();
h=h.replace(h.substring(h.length()-1), "");
String L = avel.getText().toString();
L=L.replace(L.substring(L.length()-1), "");
orderPlain.priceView.setText(Integer.parseInt(h)
-Integer.parseInt(L)+"$");
}
}
}else{
mySwitch.setChecked(true);
for (int i=0; i<dependingridients.size(); i++){
if(getAdapterPosition()==i) {
String h = orderPlain.priceView.getText().toString();
h=h.replace(h.substring(h.length()-1), "");
String L = avel.getText().toString();
L=L.replace(L.substring(L.length()-1), "");
orderPlain.priceView.setText(Integer.parseInt(h)
+Integer.parseInt(L)+"$");
}
}
}
}
});
}
}
public recyclerAdapterIngridients(ArrayList<String> list, Context c, @Nullable String[] list2){
context=c;
ingridientsfinal=list;
if(list2!=null) {
glux = list2;
dependingridients = new ArrayList<String>(Arrays.asList(list2));
}else{
glux=null;
dependingridients = new ArrayList<>(0);
}
}
@NonNull
public myViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.temple, parent, false );
return new myViewHolder(view);
}
@SuppressLint("SetTextI18n")
public void onBindViewHolder(@NonNull myViewHolder holder, int position) {
if(glux!=null){
try {
if(position==dependingridients.size())
holder.mySwitch.setEnabled(false);
String a = ingridientsfinal.get(position-dependingridients.size());
holder.ingridtitle.setText(a);
}catch (IndexOutOfBoundsException ignored){}
try {
String b = dependingridients.get(position);
holder.ingridtitle.setText(b);
holder.mySwitch.setChecked(false);
String g = b.replace(b,"1$");
holder.avel.setText(g);
}catch (IndexOutOfBoundsException ignored){}
}else {
if(position==0)
holder.mySwitch.setEnabled(false);
String a = ingridientsfinal.get(position);
holder.ingridtitle.setText(a);
}
}
@Override
public int getItemCount() {
if(dependingridients!=null) {
return dependingridients.size() + ingridientsfinal.size();
}else {
return ingridientsfinal.size();
}
}
}
公共类recyclerAdapterIngridients扩展了RecyclerView.Adapter{
语境;
整数;
字符串[]glux;
公共静态数组列表ingridientsfinal;
公共静态数组列表依赖项;
公共静态类myViewHolder扩展了RecyclerView.ViewHolder{
@SuppressLint(“UseSwitchCompatormateralCode”)
开关;
TextView ingridtitle,avel;
公共myViewHolder(@NonNull View itemView){
超级(项目视图);
ingridtitle=itemView.findViewById(R.id.ingridientTemple);
mySwitch=itemView.findviewbyd(R.id.switch1);
avel=itemView.findviewbyd(R.id.depend);
mySwitch.setOnClickListener(新视图.OnClickListener(){
@SuppressLint(“SetTextI18n”)
@凌驾
公共void onClick(视图){
如果(!mySwitch.isChecked()){
mySwitch.setChecked(false);
对于(int i=0;i您应该使用接口在适配器和活动/片段之间进行通信
在适配器中:
public interface onclickListener{
void onClick();
}
然后在适配器类中创建它的一个变量,并将其传递到构造函数适配器类并在活动/片段中使用它。您应该使用接口在适配器和活动/片段之间进行通信
在适配器中:
public interface onclickListener{
void onClick();
}
然后在适配器类中创建它的一个变量,并通过构造函数传递到适配器类,然后在活动/片段中使用它。好的,我找到了解决方法。我刚刚创建了新的公共静态ArrayList finall=new ArrayList()
然后我得到了这个位置,并将TextView的值添加到我的ArrayList中。然后我就可以从另一个类中获得该ArrayList
public myViewHolder(@NonNull View itemView) {
super(itemView);
ingridtitle=itemView.findViewById(R.id.ingridientTemple);
mySwitch=itemView.findViewById(R.id.switch1);
avel=itemView.findViewById(R.id.depend);
mySwitch.setOnClickListener(new View.OnClickListener() {
@SuppressLint("SetTextI18n")
@Override
public void onClick(View view) {
if(!mySwitch.isChecked()){
mySwitch.setChecked(false);
for (int i=0; i<dependingridients.size(); i++){
if(getAdapterPosition()==i) {
String h = orderPlain.priceView.getText().toString();
h=h.replace(h.substring(h.length()-1), "");
String L = avel.getText().toString();
L=L.replace(L.substring(L.length()-1), "");
orderPlain.priceView.setText(Integer.parseInt(h)
-Integer.parseInt(L)+"$");
finall.remove(dependingridients.get(i));
System.out.println(finall);
}
}
}else{
mySwitch.setChecked(true);
for (int i=0; i<dependingridients.size(); i++){
if(getAdapterPosition()==i) {
String h = orderPlain.priceView.getText().toString();
h=h.replace(h.substring(h.length()-1), "");
String L = avel.getText().toString();
L=L.replace(L.substring(L.length()-1), "");
orderPlain.priceView.setText(Integer.parseInt(h)
+Integer.parseInt(L)+"$");
String p = dependingridients.get(i);
System.out.println(p);
finall.add(p);
System.out.println(finall);
}
}
}
}
});
}
public myViewHolder(@NonNull View itemView){
超级(项目视图);
ingridtitle=itemView.findViewById(R.id.ingridientTemple);
mySwitch=itemView.findviewbyd(R.id.switch1);
avel=itemView.findviewbyd(R.id.depend);
mySwitch.setOnClickListener(新视图.OnClickListener(){
@SuppressLint(“SetTextI18n”)
@凌驾
公共void onClick(视图){
如果(!mySwitch.isChecked()){
mySwitch.setChecked(false);
对于(int i=0;iOk),我找到了解决方法。我刚刚创建了新的public static ArrayList finall=new ArrayList();
,然后我得到了位置并将TextView的值添加到我的ArrayList中。然后我就可以从另一个类中获取该ArrayList
public myViewHolder(@NonNull View itemView) {
super(itemView);
ingridtitle=itemView.findViewById(R.id.ingridientTemple);
mySwitch=itemView.findViewById(R.id.switch1);
avel=itemView.findViewById(R.id.depend);
mySwitch.setOnClickListener(new View.OnClickListener() {
@SuppressLint("SetTextI18n")
@Override
public void onClick(View view) {
if(!mySwitch.isChecked()){
mySwitch.setChecked(false);
for (int i=0; i<dependingridients.size(); i++){
if(getAdapterPosition()==i) {
String h = orderPlain.priceView.getText().toString();
h=h.replace(h.substring(h.length()-1), "");
String L = avel.getText().toString();
L=L.replace(L.substring(L.length()-1), "");
orderPlain.priceView.setText(Integer.parseInt(h)
-Integer.parseInt(L)+"$");
finall.remove(dependingridients.get(i));
System.out.println(finall);
}
}
}else{
mySwitch.setChecked(true);
for (int i=0; i<dependingridients.size(); i++){
if(getAdapterPosition()==i) {
String h = orderPlain.priceView.getText().toString();
h=h.replace(h.substring(h.length()-1), "");
String L = avel.getText().toString();
L=L.replace(L.substring(L.length()-1), "");
orderPlain.priceView.setText(Integer.parseInt(h)
+Integer.parseInt(L)+"$");
String p = dependingridients.get(i);
System.out.println(p);
finall.add(p);
System.out.println(finall);
}
}
}
}
});
}
public myViewHolder(@NonNull View itemView){
超级(项目视图);
ingridtitle=itemView.findViewById(R.id.ingridientTemple);
mySwitch=itemView.findviewbyd(R.id.switch1);
avel=itemView.findviewbyd(R.id.depend);
mySwitch.setOnClickListener(新视图.OnClickListener(){
@SuppressLint(“SetTextI18n”)
@凌驾
公共void onClick(视图){
如果(!mySwitch.isChecked()){
mySwitch.setChecked(false);
对于(inti=0;它解决了你的问题。看看这个,这个解决了你的问题。看看这个,谢谢让我试试。谢谢让我试试。