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January 20, 2018 13:01
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adapter for recyclerview
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public class StorageIntroAdapter extends RecyclerView.Adapter<StorageIntroAdapter.ViewHolder> { | |
private final LayoutInflater inflater; | |
private final List<StorageOption> data; | |
private int selectedPosition; | |
private Consumer<Integer> onSelectionChangedListener; | |
public StorageIntroAdapter(LayoutInflater inflater, List<StorageOption> data) { | |
this.inflater = inflater; | |
this.data = data; | |
} | |
public void setSelectedPosition(int selectedPosition) { | |
this.selectedPosition = selectedPosition; | |
} | |
public void getSelectedPosition() { | |
return selectedPosition; | |
} | |
public void setOnSelectionChangedListener(Consumer<Integer> listener) { | |
onSelectionChangedListener = listener; | |
} | |
private void onItemSelected(int position) { | |
int oldSelectedPosition = selectedPosition; | |
selectedPosition = position; | |
notifyItemChanged(oldSelectedPosition); | |
notifyItemChanged(selectedPosition); | |
onSelectionChangedListener.accept(selectedPosition); | |
} | |
@Override | |
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { | |
View view = inflater.inflate(R.layout.item_storage_option, parent, false); | |
return new ViewHolder(view); | |
} | |
@Override | |
public void onBindViewHolder(ViewHolder holder, int position) { | |
StorageOption storageOption = data.get(position); | |
holder.bind(storageOption, position == selectedPosition); | |
} | |
@Override | |
public int getItemCount() { | |
return data.size(); | |
} | |
class ViewHolder extends RecyclerView.ViewHolder { | |
private TextView pathText; | |
private TextView freeSpaceText; | |
private ProgressBar gauge; | |
private TextView titleText; | |
ViewHolder(View itemView) { | |
super(itemView); | |
titleText = itemView.findViewById(R.id.titleText); | |
pathText = itemView.findViewById(R.id.pathText); | |
freeSpaceText = itemView.findViewById(R.id.freeSpaceText); | |
gauge = itemView.findViewById(R.id.gauge); | |
itemView.setOnClickListener(v -> onItemSelected(getAdapterPosition())); | |
} | |
private void bind(StorageOption storageOption, boolean isSelected) { | |
itemView.setSelected(isSelected); | |
titleText.setText(storageOption.getTitle()); | |
pathText.setText(storageOption.getPath()); | |
freeSpaceText.setText(storageOption.getFreeSpaceStr()); | |
gauge.setMax(storageOption.getTotalSpaceMb()); | |
gauge.setProgress(storageOption.getUsedSpaceMb()); | |
} | |
} | |
} |
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