0
在onClick（）中沒有輸入recyclerview行我不明白我的代碼有什麼問題。以下是我的MainActivity，適配器和使用cardview製作的recyclerview的行。recyclerview中的多選不起作用
以下是我MainActivity.java
public class MainActivity extends AppCompatActivity implements RecyclerView.OnItemTouchListener,
View.OnClickListener,
ActionMode.Callback {
ArrayList<ProductPojo> lastNameList;
private RecyclerView recyclerView;
private ProductAdapter adapter;
private List<ProductPojo> albumList;
GestureDetectorCompat gestureDetector;
ActionMode actionMode;
/////
private ProgressDialog pDialog;
ApiClass apigetOfferList;
String response;
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
albumList = new ArrayList<>();
lastNameList = new ArrayList<ProductPojo>(12);
recyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(MainActivity.this, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View v, final int position) {
Toast.makeText(MainActivity.this, "" + position, Toast.LENGTH_SHORT).show();
final EditText edittext = new EditText(MainActivity.this);
AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
alert.setMessage("Enter Your Last Name");
alert.setTitle("Fill me");
alert.setView(edittext);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
ProductPojo lNamePojo = new ProductPojo(edittext.getText().toString());
Log.d("lastNameList.size()", ""+lastNameList.size() +" "+position);
if(!albumList.isEmpty() && lastNameList.size() != 0) {
lastNameList.add(position, lNamePojo);
Log.d("lastNameList.size()", ""+lastNameList.size());
}
adapter.notifyDataSetChanged();
adapter = new ProductAdapter(MainActivity.this, albumList, lastNameList);
recyclerView.setAdapter(adapter);
// lName = edittext.getText().toString();
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
});
alert.show();
}
})
);
/* LinearLayoutManager llm = new LinearLayoutManager(this);
llm.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(llm);
recyclerView.setAdapter(adapter);*/
gestureDetector = new GestureDetectorCompat(this, new RecyclerViewDemoOnGestureListener());
ListViewLoaderTask listViewLoaderTask = new ListViewLoaderTask();
listViewLoaderTask.execute();
}
/**
* RecyclerView item decoration - give equal margin around grid item
*/
public class GridSpacingItemDecoration extends RecyclerView.ItemDecoration {
private int spanCount;
private int spacing;
private boolean includeEdge;
public GridSpacingItemDecoration(int spanCount, int spacing, boolean includeEdge) {
this.spanCount = spanCount;
this.spacing = spacing;
this.includeEdge = includeEdge;
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
int position = parent.getChildAdapterPosition(view); // item position
int column = position % spanCount; // item column
if (includeEdge) {
outRect.left = spacing - column * spacing/spanCount; // spacing - column * ((1f/spanCount) * spacing)
outRect.right = (column + 1) * spacing/spanCount; // (column + 1) * ((1f/spanCount) * spacing)
if (position < spanCount) { // top edge
outRect.top = spacing;
}
outRect.bottom = spacing; // item bottom
} else {
outRect.left = column * spacing/spanCount; // column * ((1f/spanCount) * spacing)
outRect.right = spacing - (column + 1) * spacing/spanCount; // spacing - (column + 1) * ((1f/ spanCount) * spacing)
if (position >= spanCount) {
outRect.top = spacing; // item top
}
}
}
}
/**
* Converting dp to pixel
*/
private int dpToPx(int dp) {
Resources r = getResources();
return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics()));
}
private class ListViewLoaderTask extends AsyncTask<String, Void, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Loading ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
apigetOfferList = new ApiClass();
}
@Override
protected String doInBackground(String... args) {
response = apigetOfferList.xmlFetchFunction();
return response;
}
@Override
protected void onPostExecute(String res) {
Log.d("res", "" + res);
StringReader reader = new StringReader(res);
ProductXmlParser productXmlParser = new ProductXmlParser();
List<HashMap<String, String>> products = null;
try {
/** Getting the parsed data as a List construct */
products = productXmlParser.parse(reader);
} catch (Exception e) {
Log.d("Exception", e.toString());
}
Log.d("products", "" + products);
for (int i = 0; i < products.size(); i++) {
Log.d("productThumbnail", "" + products.get(i).get("productThumbnail"));
ProductPojo album = new ProductPojo(products.get(i).get("productThumbnail"), products.get(i).get("productName"), products.get(i).get("categoryName"), products.get(i).get("productDescription"), products.get(i).get("numberOfRatings"), products.get(i).get("rating"), products.get(i).get("averageRatingImageURL"));
albumList.add(album);
lastNameList.add(album);
}
adapter = new ProductAdapter(MainActivity.this, albumList, lastNameList);
adapter.notifyDataSetChanged();
RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(MainActivity.this, 1);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.addItemDecoration(new GridSpacingItemDecoration(2, dpToPx(10), true));
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(adapter);
pDialog.dismiss();
}
}
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {//in
Log.d("RecyclerView","DemoActivity"+"onInterceptTouchEvent");
gestureDetector.onTouchEvent(e);
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
private void myToggleSelection(int idx) {//in
Log.d("RecyclerView","DemoActivity"+"myToggleSelection");
adapter.toggleSelection(idx);
String title = getString(R.string.selected_count, adapter.getSelectedItemCount());
actionMode.setTitle(title);
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onClick(View view) {
if (view.getId() == R.id.container_list_item) {//in
// item click
Log.d("RecyclerView","DemoActivity"+"item click");
int idx = recyclerView.getChildLayoutPosition(view);
if (actionMode != null) {
myToggleSelection(idx);
return;
}
}
}
private class RecyclerViewDemoOnGestureListener extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {//in
Log.d("RecyclerView","DemoActivity"+"onSingleTapConfirmed");
View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
onClick(view);
return super.onSingleTapConfirmed(e);
}
public void onLongPress(MotionEvent e) {//in
Log.d("RecyclerView","DemoActivity"+"onLongPress");
View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (actionMode != null) {
return;
}
// Start the CAB using the ActionMode.Callback defined above
actionMode = startActionMode(MainActivity.this);
int idx = recyclerView.getChildAdapterPosition(view);
myToggleSelection(idx);
super.onLongPress(e);
}
}
@Override
public boolean onCreateActionMode(ActionMode actionMode, Menu menu) {//in
// Inflate a menu resource providing context menu items
Log.d("RecyclerView","DemoActivity"+"onCreateActionMode");
MenuInflater inflater = actionMode.getMenuInflater();
inflater.inflate(R.menu.menu_cab_recyclerviewdemoactivity, menu);
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
}
}
這是我的適配器類
public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.MyViewHolder> {
private Context mContext;
private List<ProductPojo> albumList;
String lName;
private List<DemoModel> items;
private SparseBooleanArray selectedItems;
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView lastName, cat_name, product_name, product_design, numOfRatings, rate;
public ImageView thumbnail1, thumbnail2;
public MyViewHolder(View view) {
super(view);
lastName = (TextView) view.findViewById(R.id.lastName);
product_name = (TextView) view.findViewById(R.id.product_name);
product_design = (TextView) view.findViewById(R.id.product_design);
cat_name = (TextView) view.findViewById(R.id.category_name);
rate = (TextView) view.findViewById(R.id.rate);
numOfRatings = (TextView) view.findViewById(R.id.noOfRatings);
thumbnail1 = (ImageView) view.findViewById(R.id.thumbnail);
thumbnail2 = (ImageView) view.findViewById(R.id.thumbnail2);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(itemView.getContext(), " " + getItemId(), Toast.LENGTH_SHORT).show();
}
});
view.setOnLongClickListener(new View.OnLongClickListener()
{
@Override
public boolean onLongClick(View v)
{
Toast.makeText(v.getContext(), "Long Click Listerner Position is " + getAdapterPosition(), Toast.LENGTH_SHORT).show();
return false;
}
}
);
}
}
public ProductAdapter(Context mContext, List<ProductPojo> albumList, ArrayList<ProductPojo> lName) {
this.mContext = mContext;
this.albumList = albumList;
selectedItems = new SparseBooleanArray();
}
public int getSelectedItemCount() {
Log.d("RecyclerViewDemoAdapter","getSelectedItemCount");
return selectedItems.size();
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.album_card, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, int position) {
ProductPojo album = albumList.get(position);
holder.lastName.setText("Last Name : " + album.getlName());
holder.product_name.setText("Product Name : " + album.getpName());
holder.cat_name.setText("Category Name : " + album.getcName());
holder.product_design.setText("Product Description : " + album.getpDesc());
holder.rate.setText("Rating : " + album.getRating());
holder.numOfRatings.setText("No.of ratings : " + album.getNoOfRatings());
Drawable productDrawable = LoadImageFromProductLink(album.getpLink());
holder.thumbnail1.setImageDrawable(productDrawable);
// loading album cover using Glide library
Glide.with(mContext).load(album.getpLink()).into(holder.thumbnail1);
Drawable rateDrawable = LoadImageFromRateLink(album.getRateLink());
holder.thumbnail2.setImageDrawable(rateDrawable);
// loading album cover using Glide library
Glide.with(mContext).load(album.getRateLink()).into(holder.thumbnail2);
}
private Drawable LoadImageFromProductLink(String url) {
try {
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
} catch (Exception e) {
System.out.println("Exc=" + e);
return null;
}
}
private Drawable LoadImageFromRateLink(String url) {
try {
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
} catch (Exception e) {
System.out.println("Exc=" + e);
return null;
}
}
@Override
public int getItemCount() {
return albumList.size();
}
@Override
public long getItemId(int position) {
return super.getItemId(position);
}
public void toggleSelection(int pos) {
if (selectedItems.get(pos, false)) {
Log.d("RecyclerViewDemoAdapter","IftoggleSelection");
selectedItems.delete(pos);
} else {
Log.d("RecyclerViewDemoAdapter","ElsetoggleSelection");
selectedItems.put(pos, true);
}
notifyItemChanged(pos);
}
}
**And this is my row**
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="@dimen/card_margin"
android:elevation="3dp"
card_view:cardCornerRadius="@dimen/card_album_radius">
<LinearLayout
android:id="@+id/container_list_item"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?android:attr/selectableItemBackground"
android:orientation="vertical">
<LinearLayout
android:id="@+id/first"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/thumbnail"
android:layout_width="130dp"
android:layout_height="130dp"
android:layout_margin="5dp"
android:clickable="true"
android:padding="5dp"
android:scaleType="fitXY" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/lastName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Product Name"
android:textColor="@color/colorPrimaryDark"
android:textSize="@dimen/backdrop_subtitle"
android:textStyle="bold"
android:visibility="gone" />
<TextView
android:id="@+id/product_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginTop="20dp"
android:text="Product Name"
android:textColor="@color/album_title"
android:textSize="@dimen/album_title" />
<TextView
android:id="@+id/category_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Category Name"
android:textColor="@color/album_title"
android:textSize="@dimen/album_title" />
</LinearLayout>
</LinearLayout>
<TextView
android:id="@+id/product_design"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:gravity="center"
android:text="Product Design"
android:textColor="@color/album_title"
android:textSize="@dimen/album_title" />
<LinearLayout
android:id="@+id/second"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/rate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Rate"
android:textColor="@color/album_title"
android:textSize="@dimen/album_title" />
<TextView
android:id="@+id/noOfRatings"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="No. of Ratings"
android:textColor="@color/album_title"
android:textSize="@dimen/album_title" />
</LinearLayout>
<ImageView
android:id="@+id/thumbnail2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
請幫我guys..I'm等待UR提前answers..Thanks！
感謝烏拉圭回合的答案......用這種方式我可以處理長按，但我怎麼能實現多選擇 –
您可以使用外部庫本這樣的HTTPS ：//bignerdranch.github.io/recyclerview-multiselect/ – Beyaz