I tried executing the code below, but this gives the "Last Time Used" of the applications.
public class UsageListAdapter extends RecyclerView.Adapter<UsageListAdapter.ViewHolder> {
private List<CustomUsageStats> mCustomUsageStatsList = new ArrayList<>();
private DateFormat mDateFormat = new SimpleDateFormat();
/**
* Provide a reference to the type of views that you are using (custom ViewHolder)
*/
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView mPackageName;
private final TextView mLastTimeUsed;
private final ImageView mAppIcon;
public ViewHolder(View v) {
super(v);
mPackageName = (TextView) v.findViewById(R.id.textview_package_name);
mLastTimeUsed = (TextView) v.findViewById(R.id.textview_last_time_used);
mAppIcon = (ImageView) v.findViewById(R.id.app_icon);
}
public TextView getLastTimeUsed() {
return mLastTimeUsed;
}
public TextView getPackageName() {
return mPackageName;
}
public ImageView getAppIcon() {
return mAppIcon;
}
}
public UsageListAdapter() {
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View v = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.usage_row, viewGroup, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
viewHolder.getPackageName().setText(
mCustomUsageStatsList.get(position).usageStats.getPackageName());
long lastTimeUsed = mCustomUsageStatsList.get(position).usageStats.getLastTimeUsed();
viewHolder.getLastTimeUsed().setText(mDateFormat.format(new Date(lastTimeUsed)));
viewHolder.getAppIcon().setImageDrawable(mCustomUsageStatsList.get(position).appIcon);
}
#Override
public int getItemCount() {
return mCustomUsageStatsList.size();
}
public void setCustomUsageStatsList(List<CustomUsageStats> customUsageStats) {
mCustomUsageStatsList = customUsageStats;
}
}
So can anyone modify this and get the time used of each application (in foreground/background) and display it.
Related
I am just practicing the RecyclerView. when I run the App my App crashed I check the log but i cant understand the problem can some help me im waiting for someone responce?
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
private model[] localDataSet;
private TextView name,number;
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView textView;
public ViewHolder(View view) {
super(view);
textView = (TextView) view.findViewById(R.id.name);
}
public TextView getTextView() {
return textView;
}
}
public CustomAdapter(model[] dataSet) {
localDataSet = dataSet;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
// Create a new view, which defines the UI of the list item
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.contacx, viewGroup, false);
view.findViewById(R.id.name);
view.findViewById(R.id.number);
return new ViewHolder(view);
}
// Replace the contents of a view (invoked by the layout manager)
#Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
name.setText(localDataSet[position].getName());
number.setText(localDataSet[position].getPhone());
}
#Override
public int getItemCount() {
return localDataSet.length;
}
}
You need to change the following things in your code:
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
private model[] localDataSet;
//remove this from here.
//private TextView name,number;
public static class ViewHolder extends RecyclerView.ViewHolder {
//This should be from the layout you have passed in ViewHolder method. in your case from R.layout.contacx. This layout should have two textview with ids:- name and phone respectively.
private final TextView name, phone;
public ViewHolder(View view) {
super(view);
name = view.findViewById(R.id.name);
phone = view.findViewById(R.id.phone);
}
}
public CustomAdapter(model[] dataSet) {
localDataSet = dataSet;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
// Create a new view, which defines the UI of the list item
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.contacx, viewGroup, false);
//remvoe this from here.
//view.findViewById(R.id.name);
//view.findViewById(R.id.number);
return new ViewHolder(view);
}
// Replace the contents of a view (invoked by the layout manager)
#Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
//here you should call those view to bind your data like:
viewHolder.name.setText(localDataSet[position].getName());
viewHolder.phone.setText(String.valueOf(localDataSet[position].getPhone()));
}
#Override
public int getItemCount() {
return localDataSet.length;
}
}
Use ViewHolder for data bind. More safe
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
private model[] localDataSet;
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView name, number;
public ViewHolder(View view) {
super(view);
name = view.findViewById(R.id.name);
number = view.findViewById(R.id.phone);
}
public void bindData(model data) {
name.setText(data.getName());
number.setText(String.valueOf(data.getPhone()));
}
}
public CustomAdapter(model[] dataSet) {
localDataSet = dataSet;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
/* No Need
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.contacx, viewGroup, false);
view.findViewById(R.id.name);
view.findViewById(R.id.number);
*/
return new ViewHolder(LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.contacx, viewGroup, false););
}
#Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
/*
name.setText(localDataSet[position].getName());
number.setText(localDataSet[position].getPhone());
*/
viewHolder.bindData(localDataSet[position]);
}
#Override
public int getItemCount() {
return localDataSet.length;
}
}
I am new to android and java. I am not able to call ViewHolder.setCategoryName(name); in the onBindViewHolder function. I know there are probably similar questions but nothing has worked for me yet. The compiler gives error "non-static functions cannot be called from a static context", I haven't used static keyword anywhere in my code.
public class CategoryAdapter extends RecyclerView.Adapter<CategoryAdapter.ViewHolder> {
private List<CategoryModel> categoryModelList;
public CategoryAdapter(List<CategoryModel> categoryModelList) {
this.categoryModelList = categoryModelList;
}
#NonNull
#Override
public CategoryAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int position) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.category_item,viewGroup,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull CategoryAdapter.ViewHolder holder, int position) {
String icon = categoryModelList.get(position).getCategoryIconLink();
String name = categoryModelList.get(position).getCategoryName();
ViewHolder.setCategoryName(name);
}
#Override
public int getItemCount() {
return categoryModelList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private ImageView categoryIcon;
private TextView categoryName;
public ViewHolder(#NonNull View itemView) {
super(itemView);
categoryIcon = itemView.findViewById(R.id.category_icon);
categoryName = itemView.findViewById(R.id.category_name);
}
private void setCategoryIcon(){
}
private void setCategoryName(String name){
categoryName.setText(name);
}
}
}
The problem is that your method isn't static but you are trying to call from a static context:
private void setCategoryName
You would need to do:
private static void setCategoryName
However, for this type of action, you can just use the holder variable:
holder.bind(categoryModelList.get(position))
try this:
public class CategoryAdapter extends RecyclerView.Adapter<CategoryAdapter.ViewHolder> {
private List<CategoryModel> categoryModelList;
public CategoryAdapter(List<CategoryModel> categoryModelList) {
this.categoryModelList = categoryModelList;
}
#NonNull
#Override
public CategoryAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int position) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.category_item,viewGroup,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull CategoryAdapter.ViewHolder holder, int position) {
holder.bind(categoryModelList.get(position))
}
#Override
public int getItemCount() {
return categoryModelList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private ImageView categoryIcon;
private TextView categoryName;
public ViewHolder(#NonNull View itemView) {
super(itemView);
categoryIcon = itemView.findViewById(R.id.category_icon);
categoryName = itemView.findViewById(R.id.category_name);
}
public void bind(CategoryModel categoryModel){
categoryName.setText(categoryModel.getCategoryName());
}
}
}
Im fairly new to android and i am trying to use a RecyclerView to display content hosted on firebase, but when it comes up the first three items are duplicated.
I have tried a few solutions around but none seem to work, any help would be great!
DiscountRecyclerAdapter.java
public class DiscountRecyclerAdapter extends RecyclerView.Adapter<com.cianod.comharapp.DiscountRecyclerAdapter.ViewHolder> {
public List<Discounts> discountsList;
public Context context;
private ImageView discountImageView;
public DiscountRecyclerAdapter(List<Discounts> discountsList){
this.discountsList = discountsList;
}
#Override
public com.cianod.comharapp.DiscountRecyclerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.discount_list_item, parent, false);
context = parent.getContext();
return new com.cianod.comharapp.DiscountRecyclerAdapter.ViewHolder(view);
}
#Override
public void onBindViewHolder(final com.cianod.comharapp.DiscountRecyclerAdapter.ViewHolder holder, int position) {
holder.setIsRecyclable(false);
String discountName = discountsList.get(position).getDiscount_name();
holder.setDiscount_Name(discountName);
String discountDescription = discountsList.get(position).getDiscount_description();
holder.setDiscount_Description(discountDescription);
String discountValue = discountsList.get(position).getDiscount_value();
holder.setDiscount_Value(discountValue);
String image_url = discountsList.get(position).getDiscount_image();
String thumbUri = discountsList.get(position).getDiscount_image();
holder.setDiscount_Image(image_url, thumbUri);
}
#Override
public int getItemCount() {
if(discountsList != null) {
return discountsList.size();
} else {
return 0;
}
}
public class ViewHolder extends RecyclerView.ViewHolder {
private View mView;
private TextView discount_name;
public ViewHolder(View itemView) {
super(itemView);
mView = itemView;
}
public void setDiscount_Name(String message){
discount_name = mView.findViewById(R.id.discount_name);
discount_name.setText(message);
}
public void setDiscount_Description(String message){
discount_name = mView.findViewById(R.id.discount_description);
discount_name.setText(message);
}
public void setDiscount_Value(String message){
discount_name = mView.findViewById(R.id.discount_value);
discount_name.setText(message);
}
public void setDiscount_Image(String downloadUri, String thumbUri){
discountImageView = mView.findViewById(R.id.discount_image);
RequestOptions requestOptions = new RequestOptions();
requestOptions.placeholder(R.drawable.image_placeholder);
Glide.with(context).applyDefaultRequestOptions(requestOptions).load(downloadUri).thumbnail(
Glide.with(context).load(thumbUri)
).into(discountImageView);
}
}
}
I believe the problem is coming from the discount adapter but I cant say for sure. The RecyclerView is displayed on a fragment if that could be influencing it I can attach other pieces if they are necessary.
There is nothing wrong with your code.So maybe you should try to override those two methods in your adapter class
#Override
public long getItemId(int position) {
return position;
}
#Override
public int getItemViewType(int position) {
return position;
}
Can someone help me with this error that I keep getting? The program that I'm trying to implement admob banner ad between items in recyclerview. every thing is ok but still this one error that blocked me from go on.
public class RecipeAdapter extends RecyclerView.Adapter<RecipeAdapter.ViewHolder> {
public static final String TAG = RecipeAdapter.class.getSimpleName();
public static final HashMap<String, Integer> LABEL_COLORS = new HashMap<String, Integer>() {{
put("Low-Carb", R.color.colorLowCarb);
put("Low-Fat", R.color.colorLowFat);
put("Low-Sodium", R.color.colorLowSodium);
put("Medium-Carb", R.color.colorMediumCarb);
put("Vegetarian", R.color.colorVegetarian);
put("Balanced", R.color.colorBalanced);
}};
private Context mContext;
private LayoutInflater mInflater;
private ArrayList<Recipe> mDataSource;
private static final int DEFAULT_VIEW_TYPE = 1;
private static final int NATIVE_AD_VIEW_TYPE = 2;
public RecipeAdapter(Context context, ArrayList<Recipe> items) {
mContext = context;
mDataSource = items;
mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); }
#Override public int getItemViewType(int position) {
// Change the position of the ad displayed here. Current is after 5
if ((position + 1) % 6 == 0) {
return NATIVE_AD_VIEW_TYPE;
}
return DEFAULT_VIEW_TYPE; }
#NonNull
#Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view;
LayoutInflater layoutInflater = LayoutInflater.from(mContext);
switch (viewType) {
default:
view = layoutInflater
.inflate(R.layout.list_item_native_ad, parent, false);
return new ViewHolder(view);
case NATIVE_AD_VIEW_TYPE:
view = layoutInflater.inflate(R.layout.list_item_native_ad, parent, false);
return new ViewHolderAdMob(view);
}
}
#Override public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
// Get relevant subviews of row view
TextView titleTextView = holder.titleTextView;
TextView subtitleTextView = holder.subtitleTextView;
TextView detailTextView = holder.detailTextView;
ImageView thumbnailImageView = holder.thumbnailImageView;
//Get corresponding recipe for row final Recipe recipe = (Recipe) getItem(position);
// Update row view's textviews to display recipe information
titleTextView.setText(recipe.title);
subtitleTextView.setText(recipe.description);
detailTextView.setText(recipe.label);
// Use Picasso to load the image. Temporarily have a placeholder in case it's slow to load
Picasso.with(mContext).load(recipe.imageUrl).placeholder(R.mipmap
.ic_launcher).into(thumbnailImageView);
holder.parentView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent detailIntent = new Intent(mContext, RecipeDetailActivity.class);
detailIntent.putExtra("title", recipe.title);
detailIntent.putExtra("url", recipe.instructionUrl);
mContext.startActivity(detailIntent);
}
});
// Style text views
Typeface titleTypeFace = Typeface.createFromAsset(mContext.getAssets(),
"fonts/JosefinSans-Bold.ttf");
titleTextView.setTypeface(titleTypeFace);
Typeface subtitleTypeFace = Typeface.createFromAsset(mContext.getAssets(),
"fonts/JosefinSans-SemiBoldItalic.ttf");
subtitleTextView.setTypeface(subtitleTypeFace);
Typeface detailTypeFace = Typeface.createFromAsset(mContext.getAssets(),
"fonts/Quicksand-Bold.otf");
detailTextView.setTypeface(detailTypeFace);
detailTextView.setTextColor(android.support.v4.content.ContextCompat.getColor(mContext, LABEL_COLORS
.get(recipe.label)));
}
#Override public int getItemCount() {
return mDataSource.size(); }
#Override public long getItemId(int position) {
return position; }
public Object getItem(int position) {
return mDataSource.get(position); }
public class ViewHolder extends RecyclerView.ViewHolder {
private TextView titleTextView;
private TextView subtitleTextView;
private TextView detailTextView;
private ImageView thumbnailImageView; private View parentView;
public ViewHolder(#NonNull View view){
super(view);
// create a new "Holder" with subviews
this.parentView = view;
this.thumbnailImageView = (ImageView) view.findViewById(R.id.recipe_list_thumbnail);
this.titleTextView = (TextView) view.findViewById(R.id.recipe_list_title);
this.subtitleTextView = (TextView) view.findViewById(R.id.recipe_list_subtitle);
this.detailTextView = (TextView) view.findViewById(R.id.recipe_list_detail);
// hang onto this holder for future recyclage
view.setTag(this);
}
}
public class ViewHolderAdMob extends RecyclerView.ViewHolder {
private final AdView mNativeAd;
public ViewHolderAdMob(View itemView) {
super(itemView);
mNativeAd = itemView.findViewById(R.id.nativeAd);
mNativeAd.setAdListener(new AdListener() {
#Override
public void onAdLoaded() {
super.onAdLoaded();
// if (mItemClickListener != null) {
Log.i("AndroidBash", "onAdLoaded");
// }
}
#Override
public void onAdClosed() {
super.onAdClosed();
// if (mItemClickListener != null) {
Log.i("AndroidBash", "onAdClosed");
// }
}
#Override
public void onAdFailedToLoad(int errorCode) {
super.onAdFailedToLoad(errorCode);
// if (mItemClickListener != null) {
Log.i("AndroidBash", "onAdFailedToLoad");
// }
}
#Override
public void onAdLeftApplication() {
super.onAdLeftApplication();
// if (mItemClickListener != null) {
Log.i("AndroidBash", "onAdLeftApplication");
// }
}
#Override
public void onAdOpened() {
super.onAdOpened();
// if (mItemClickListener != null) {
Log.i("AndroidBash", "onAdOpened");
// }
}
});
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice("") // Remove this before publishing app
.build();
mNativeAd.loadAd(adRequest);
}
}
}
The return type needs to be whatever ViewHolder type you declared for your adapter class.
For example, from the Android RecyclerView example page:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
// ^^^^^^^^^^^^^^^^^^^^^^
// It should return this type ^
public static class MyViewHolder extends RecyclerView.ViewHolder {
// your adapter
}
#Override
public MyAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {
// Note: returns MyAdapter.MyViewHolder, not RecyclerView.ViewHolder
}
}
In your case, you have
public class RecipeAdapter extends RecyclerView.Adapter<RecipeAdapter.ViewHolder>
which means your onCreateViewHolder has to return RecipeAdapter.ViewHolder not RecyclerView.ViewHolder.
There is a separate issue too, which is that you have two ViewHolder types in the same adapter. To do this, you would need to change the ViewHolder type that your RecyclerView is based on to the generic type (RecyclerView.ViewHolder).
Please review this question, it has good answers for how to do this.
I tried to insert recycleview inside cardview, but it not create it. I think it's problem with adapter, because this type of card created, but not fill recycle view.Now its look like this
There's my recycleview adapter code
public class SubItemsAdapter extends RecyclerView.Adapter<SubItemsAdapter.SubtasksViewHolder>{
private List<Subtask> subtasks;
public SubItemsAdapter(List<Subtask> subtasks){
this.subtasks = subtasks;
}
public class SubtasksViewHolder extends RecyclerView.ViewHolder{
TextView titleTextView;
CheckBox doneCheckBox;
public SubtasksViewHolder(View itemView) {
super(itemView);
titleTextView = (TextView)itemView.findViewById(R.id.subtaskTitle);
doneCheckBox = (CheckBox)itemView.findViewById(R.id.subtaskCheckbox);
}
}
#Override
public SubtasksViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.subtasks_listitem,parent,false);
return new SubtasksViewHolder(v);
}
#Override
public void onBindViewHolder(SubtasksViewHolder holder, int position) {
holder.titleTextView.setText(subtasks.get(position).getText());
holder.doneCheckBox.setChecked(subtasks.get(position).getDone());
}
#Override
public int getItemCount() {
return subtasks.size();
}} `
And my cardview code:
public class TasklistAdapter extends RecyclerView.Adapter<TasklistAdapter.ViewHolder> {
ArrayList<TodoItem> todoItems;
int[] dataTypes;
private static final int SIMPLETODOITEM = 0;
private static final int EXTENDTODOITEM = 1;
Context context;
public TasklistAdapter(ArrayList<TodoItem> todoItems, int[] dataTypes, Context context)
{
this.todoItems = todoItems;
this.dataTypes = dataTypes;
this.context = context;
}
public class SimpleViewHolder extends ViewHolder{
TextView titleTextView;
TextView desciptionTextView;
CheckBox doneCheckBox;
public SimpleViewHolder(View v) {
super(v);
titleTextView = (TextView)v.findViewById(R.id.simpleitem_title_textbox);
desciptionTextView =(TextView)v.findViewById(R.id.simpleitem_description_textbox);
doneCheckBox = (CheckBox)v.findViewById(R.id.simpleitem_checkbox);
}
}
public class ExtendViewHolder extends ViewHolder{
TextView titleTextView;
TextView descTextView;
RecyclerView subtasksListView;
SubItemsAdapter adapter;
RecyclerView.LayoutManager manager;
public ExtendViewHolder(View v) {
super(v);
titleTextView = (TextView)v.findViewById(R.id.extended_card_title);
descTextView = (TextView)v.findViewById(R.id.extended_card_description);
subtasksListView = (RecyclerView)v.findViewById(R.id.subtasks_listview);
manager = new LinearLayoutManager(v.getContext());
}
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v;
switch (viewType)
{
case EXTENDTODOITEM:
v = LayoutInflater.from(parent.getContext()).inflate(R.layout.extendedtodoitem_card, parent, false);
return new ExtendViewHolder(v);
default:
v = LayoutInflater.from(parent.getContext()).inflate(R.layout.simpletodoitem_card,parent,false);
return new SimpleViewHolder(v);
}
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
switch (holder.getItemViewType()){
case EXTENDTODOITEM:
ExtendViewHolder extViewHold = (ExtendViewHolder)holder;
extViewHold.adapter = new SubItemsAdapter(todoItems.get(position).getSubtasks());
extViewHold.titleTextView.setText(todoItems.get(position).getText());
extViewHold.descTextView.setText(todoItems.get(position).getDescription());
extViewHold.subtasksListView.setLayoutManager(extViewHold.manager);
extViewHold.subtasksListView.setAdapter(extViewHold.adapter);
break;
default:
SimpleViewHolder simViewHold = (SimpleViewHolder)holder;
simViewHold.desciptionTextView.setText(todoItems.get(position).getDescription());
simViewHold.titleTextView.setText(todoItems.get(position).getText());
break;
}
}
#Override
public int getItemCount() {
return todoItems.size();
}
#Override
public int getItemViewType(int position) {
return dataTypes[position];
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public ViewHolder(View v) {
super(v);
}
}
}`
in your TasklistAdapter, static class ViewHolder extending RecyclerView.ViewHolder seems useless! and you are trying to inflate and bind data with two heterogeneous layouts with their own viewholder sub-classes! My solution would be to change this :
public class TasklistAdapter extends RecyclerView.Adapter<TasklistAdapter.ViewHolder>
to
public class TasklistAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>