我有2个RecyclerView
适配器,分别命名为AddDrinkAdapter
和DrinkDetailAdapter
。
[AddDrinkAdapter
是列出不同类型的饮料和所需的数量。
虽然DrinkDetailAdapter
将列出这些饮料的详细信息。
这是我的AddDrinkAdapter
班
public class AddDrinkAdapter extends RecyclerView.Adapter<AddDrinkViewHolder> {
private ArrayList<DrinkQuantity> listDrinkQuantity = new ArrayList<>();
private AddDrinkFragment.callbackListener listener;
private final int min = 0;
private final int max = 5;
AddDrinkAdapter(ArrayList<DrinkQuantity> listDrinkQuantity, AddDrinkFragment.callbackListener callbackListener) {
this.listDrinkQuantity = listDrinkQuantity;
listener = callbackListener;
}
public ArrayList<DrinkQuantity> getListDrinkQuantity() {
return listDrinkQuantity;
}
@NonNull
@Override
public AddDrinkViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_drink_quantity, parent, false);
return new AddDrinkViewHolder(itemView);
}
@SuppressLint("SetTextI18n")
@Override
public void onBindViewHolder(@NonNull AddDrinkViewHolder holder, int position) {
DrinkQuantity drinkQuantity = listDrinkQuantity.get(position);
holder.mTvName.setText(drinkQuantity.getDrinkType());
holder.mEtQuantity.setText(Integer.toString(drinkQuantity.getQuantity()));
holder.mEtQuantity.addTextChangedListener(setTextWatcher(position, holder.mEtQuantity));
holder.mIvMinus.setOnClickListener(onClick(holder, position, "minus"));
holder.mIvAdd.setOnClickListener(onClick(holder, position, "add"));
}
@Override
public int getItemCount() {
return listDrinkQuantity.size();
}
private TextWatcher setTextWatcher(int position, EditText et){
return new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
String value = charSequence.toString();
if(!Util.isNullOrEmpty(value.trim())) {
int num = Integer.parseInt(charSequence.toString());
if(num < 0 || num > 5) {
listener.onChangeText(min, max, num);
et.setText("0");
} else {
listDrinkQuantity.get(position).quantity = num;
}
}
}
@Override
public void afterTextChanged(Editable editable) {
}
};
}
private View.OnClickListener onClick(@NonNull AddDrinkViewHolder holder, int position, String mode) {
return new View.OnClickListener() {
@SuppressLint("SetTextI18n")
@Override
public void onClick(View view) {
int qty = listDrinkQuantity.get(position).quantity;
if (mode.equals("minus")) {
if(qty == 0) {
listener.onChangeText(min,max,-1);
return; // min 0 : abort
}
qty--;
holder.mEtQuantity.setText(Integer.toString(qty));
} else if (mode.equals("add")) {
if(qty == 5) {
listener.onChangeText(min,max,6);
return; // max 5 : abort
}
qty++;
holder.mEtQuantity.setText(Integer.toString(qty));
}
}
};
}
}
DrinkDetailAdapter
类别
public class DrinkDetailAdapter extends RecyclerView.Adapter<DrinkDataViewHolder> {
private static final String TAG = DrinkDetailAdapter.class.getSimpleName();
private ArrayList<Drink> drinkList = new ArrayList<>();
private final String NAME = "name";
private final String SUGAR = "sugar";
private final String ICE = "ice";
DrinkDetailAdapter(ArrayList<Drink> drink_list) {
drinkList = drink_list;
}
ArrayList<Drink> getDrinkDetailsArrayList() {
return drinkList;
}
void reset() {
for(int i=0; i < drinkList.size(); i++) {
drinkList.get(i).getDrinkDetails().drink_name = "";
drinkList.get(i).getDrinkDetails().sugar = "0";
drinkList.get(i).getDrinkDetails().ice = "0";
}
}
@NonNull
@Override
public DrinkDataViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_drink_check, parent, false);
return new DrinkDataViewHolder(itemView);
}
@Override
public void onBindViewHolder(@NonNull DrinkDataViewHolder holder, int position) {
Drink drink = drinkList.get(position);
holder.mEtName.setText(drink.getDrinkDetails().drink_name);
holder.mEtSugar.setText(drink.getDrinkDetails().sugar);
holder.mEtIce.setText(drink.getDrinkDetails().ice);
holder.mEtName.addTextChangedListener(updateData(position, NAME, holder));
holder.mEtSugar.addTextChangedListener(updateData(position, SUGAR, holder));
holder.mEtIce.addTextChangedListener(updateData(position, ICE, holder));
}
@Override
public int getItemCount() {
return drinkList.size();
}
TextWatcher updateData(int position, String editText, @NonNull DrinkDataViewHolder holder) {
return new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
switch (editText) {
case NAME:
drinkList.get(position).getDrinkDetails().drink_name = charSequence.toString();
break;
case SUGAR:
drinkList.get(position).getDrinkDetails().sugar = charSequence.toString();
break;
case ICE:
drinkList.get(position).getDrinkDetails().ice = charSequence.toString();
break;
}
}
@Override
public void afterTextChanged(Editable editable) {
}
};
}
}
[获得Drink
数量后,这是更新DrinkDetailAdapter
ArrayList
]的代码>
@Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == REQUEST_CODE_ADD_DRINK) { if (resultCode == Activity.RESULT_OK) { try { Bundle args = data.getBundleExtra("args"); if (args != null) { drinkCheckResponse = args.getParcelable(DRINK_CHECK_RESPONSE); drinkQuantityList.clear(); drinkQuantityList.addAll(drinkCheckResponse.getData().drink_quantities); } } catch (Exception e) { Logger.e(TAG, "onActivityResult Exception: msg[%s]", e.getMessage()); Logger.logException(e); } updateDrinkList(); } } } private void updateDrinkList() { for(int i = 0; i < drinkQuantityList.size(); i++) { setDrinkList(drinkQuantityList.get(i).drink_type, drinkQuantityList.get(i).quantity); } drinkDetailsAdapter.notifyDataSetChanged(); } private void setDrinkList(String name, int enteredQuantity) { int drinkTypeCount = drinkTypeCount(name); int diffCount = enteredQuantity-drinkTypeCount; if (diffCount != 0) { addRemoveDrink(diffCount, enteredQuantity, name); } } private int drinkTypeCount(String name) { int count = 0; for(int i=0; i < drinkList.size(); i++) { String subName = drinkList.get(i).getDrinkDetails().drink_name.substring(0, drinkList.get(i).getDrinkDetails().drink_name.indexOf("(")).trim(); if(subName.equals(name)) { count++; } } return count; } private void addRemoveDrink(int diffCount, int enteredQuantity, String name) { if(diffCount > 0) { for(int i=enteredQuantity-diffCount+1; i <= enteredQuantity; i++) { DrinkDetails drinkDetails = new DrinkDetails(name + " (" + i + ")"); drinkList.add(new Drink(drinkDetails)); } } else if(diffCount < 0) { for(int i=enteredQuantity-diffCount; i > enteredQuantity; i--) { for (Iterator<Drink> iterator = drinkList.iterator(); iterator.hasNext();) { Drink drink = iterator.next(); if (drink.getDrinkDetails().drink_name.equals(name + " (" + i + ")")) { // Remove the current element from the iterator and the list. iterator.remove(); drinkDetailsAdapter.notifyItemRemoved(drinkList.indexOf(drink)); } } } } Collections.sort(drinkList); Log.d(TAG, "addRemoveDrink: " + drinkList.size()); }
[这是我添加10-15数量(所有饮料类型的总和),然后将每种类型的数量减去0或1时收到的错误。
E/AndroidRuntime: FATAL EXCEPTION: main Process: my.com.time.tapins, PID: 4143 java.lang.IndexOutOfBoundsException: Index: 13, Size: 3 at java.util.ArrayList.get(ArrayList.java:437) at my.com.time.tapins.ui.drinkcheck.DrinkDetailAdapter$3.onTextChanged(DrinkDetailAdapter.java:121) at android.widget.TextView.sendOnTextChanged(TextView.java:10535) at android.widget.TextView.setText(TextView.java:6272) at android.widget.TextView.setText(TextView.java:6097) at android.widget.TextView.setText(TextView.java:6049) at my.com.time.tapins.ui.drinkcheck.DrinkDetailAdapter.onBindViewHolder(DrinkDetailAdapter.java:67) at my.com.time.tapins.ui.drinkcheck.DrinkDetailAdapter.onBindViewHolder(DrinkDetailAdapter.java:21) at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6781) at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6823) at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5752) at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6019) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5858) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5854) at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3924) at androidx.recyclerview.widget.RecyclerView.onMeasure(RecyclerView.java:3336) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24530) at androidx.core.widget.NestedScrollView.measureChildWithMargins(NestedScrollView.java:1502) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.core.widget.NestedScrollView.onMeasure(NestedScrollView.java:556) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:24530) at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227) at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) E/AndroidRuntime: at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:742) at android.view.View.measure(View.java:24530) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3006) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1833) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2122) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1721) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7598) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:966) at android.view.Choreographer.doCallbacks(Choreographer.java:790) at android.view.Choreographer.doFrame(Choreographer.java:725) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:951) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7356) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930) E/UncaughtException: java.lang.IndexOutOfBoundsException: Index: 13, Size: 3 at java.util.ArrayList.get(ArrayList.java:437) at my.com.time.tapins.ui.drinkcheck.DrinkDetailAdapter$3.onTextChanged(DrinkDetailAdapter.java:121) at android.widget.TextView.sendOnTextChanged(TextView.java:10535) at android.widget.TextView.setText(TextView.java:6272) at android.widget.TextView.setText(TextView.java:6097) at android.widget.TextView.setText(TextView.java:6049) at my.com.time.tapins.ui.drinkcheck.DrinkDetailAdapter.onBindViewHolder(DrinkDetailAdapter.java:67) at my.com.time.tapins.ui.drinkcheck.DrinkDetailAdapter.onBindViewHolder(DrinkDetailAdapter.java:21) at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6781) at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6823) at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5752) at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6019) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5858) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5854) at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3924) at androidx.recyclerview.widget.RecyclerView.onMeasure(RecyclerView.java:3336) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24530) at androidx.core.widget.NestedScrollView.measureChildWithMargins(NestedScrollView.java:1502) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.core.widget.NestedScrollView.onMeasure(NestedScrollView.java:556) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:24530) at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227) at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24530) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:742) at android.view.View.measure(View.java:24530) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3006) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1833) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2122) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1721) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7598) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:966) at android.view.Choreographer.doCallbacks(Choreographer.java:790) at android.view.Choreographer.doFrame(Choreographer.java:725) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:951) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7356) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
基本上这是这两个
RecyclerView
适配器的2页。
Drink
类别
public class Drink implements Comparable<Drink>, Parcelable { private DrinkDetails drink_details; public Drink() { } public Drink(DrinkDetails drink_details) { this.drink_details = drink_details; } protected Drink(Parcel in) { } public static final Creator<Drink> CREATOR = new Creator<Drink>() { @Override public Drink createFromParcel(Parcel in) { return new Drink(in); } @Override public Drink[] newArray(int size) { return new Drink[size]; } }; public DrinkDetails getDrinkDetails() { return drink_details; } private String getDrinkName() { return getDrinkDetails().drink_name; } @Override public int compareTo(Drink drink) { if(drink.drink_details.drink_name.compareToIgnoreCase(getDrinkName()) > 0){ return -1; } else if(drink.drink_details.drink_name.compareToIgnoreCase(getDrinkName()) < 0){ return 1; } return 0; } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel parcel, int i) { } }
DrinkQuantity
类别
public class DrinkQuantity implements Parcelable { public String drink_type; public int quantity; public DrinkQuantity() { } public DrinkQuantity(String drink_type, int quantity) { this.drink_type = drink_type; this.quantity = quantity; } protected DrinkQuantity(Parcel in) { drink_type = in.readString(); quantity = in.readInt(); } public static final Creator<DrinkQuantity> CREATOR = new Creator<DrinkQuantity>() { @Override public DrinkQuantity createFromParcel(Parcel in) { return new DrinkQuantity(in); } @Override public DrinkQuantity[] newArray(int size) { return new DrinkQuantity[size]; } }; public String getDrinkType() { return drink_type; } public int getQuantity() { return quantity; } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel parcel, int i) { parcel.writeString(drink_type); parcel.writeInt(quantity); } }
我发现结构非常混乱,因为
AddDrinkAdapter
使用ArrayList<DrinkQuantity>
,DrinkDetailAdapter
使用ArrayList<Drink>
,然后我需要执行循环以匹配这两个列表。如果有人可以更改结构以使其更好,请告诉我。谢谢。
我有2个RecyclerView适配器,分别名为AddDrinkAdapter和DrinkDetailAdapter。 AddDrinkAdapter用于列出不同类型的饮料和所需的数量。而DrinkDetailAdapter列出了这些...
经过数小时的调试后,终于看到了问题所在。我的updateData函数是一个导致我出现问题的函数,因为它保留了原始的int position
。