我想使用RecyclerView类来编辑我的Adapter内容。我可以使用适配器位置编辑RecyclerView中的所有值。除了图片上传，我什么都做。我可以浏览图像，但是从未使用过onActivityResult。这是一个工作代码。从活动类复制粘贴。请帮助我，我们将不胜感激。
public class AlbumsAdapter extends RecyclerView.Adapter<AlbumsAdapter.MyViewHolder> {
private Context mContext;
List<Anime> mData;
List<Anime> contactListFiltered;
RequestOptions option;
private List<ChatUser> mUsersList;
CustomFiterAds fiterAds;
private RequestQueue requestQueue ;
String JSON_URL;
String RemoveCategory;
String editCategory;
Spinner spin_category,spin_sub_category,spin_product_for,spin_product_typ,condition,negotiable,city,ad_age;
ArrayList<String> arrayList_categry;
private ArrayList<Model> modelList;
String JsonURL;
private static String sub_category;
LinearLayout lin_product,lin_category;
private ImageView imageView1;
private static final int SELECT_PICTURE = 100;
private Bitmap bitmap1;
private int CAMERA = 1;
Uri selectedImageUri;
public AlbumsAdapter(Context mContext, List<Anime> mData,List<ChatUser> mUsersList) {
this.mContext = mContext;
this.mData = mData;
this.contactListFiltered = mData;
this.mUsersList=mUsersList;
// Request option for Glide
option = new RequestOptions().centerCrop().placeholder(R.drawable.loading_shape).error(R.drawable.loading_shape);
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView title, count,desc;
public ImageView thumbnail, overflow,delete,edit;
public MyViewHolder(View view) {
super(view);
title = (TextView) view.findViewById(R.id.title);
count = (TextView) view.findViewById(R.id.count);
desc = (TextView) view.findViewById(R.id.desc);
thumbnail = (ImageView) view.findViewById(R.id.thumbnail);
overflow = (ImageView) view.findViewById(R.id.overflow);
delete=view.findViewById(R.id.deletepost);
edit=view.findViewById(R.id.editpost);
}
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.myadlist, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
holder.title.setText(mData.get(position).getAd_title());
holder.count.setText("AED "+mData.get(position).getAd_price());
holder.desc.setText(mData.get(position).getAd_description());
Glide.with(mContext).load(mData.get(position).getImage1()).apply(option).into(holder.thumbnail);
holder.overflow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
showPopupMenu(holder.overflow,position);
}
});
holder.edit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
editCategory=mData.get(position).getId();
editHeadline(position);
notifyDataSetChanged();
}
});
holder.delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
RemoveCategory=mData.get(position).getId();
deletevolley();
notifyItemRemoved(position);
notifyDataSetChanged();
}
});
}
/**
* Showing popup menu when tapping on 3 dots
*/
private void showPopupMenu(View view,int position) {
// inflate menu
PopupMenu popup = new PopupMenu(mContext, view);
MenuInflater inflater = popup.getMenuInflater();
inflater.inflate(R.menu.menu_album, popup.getMenu());
popup.setOnMenuItemClickListener(new MyMenuItemClickListener(position));
popup.show();
}
/**
* Click listener for popup menu items
*/
class MyMenuItemClickListener implements PopupMenu.OnMenuItemClickListener {
private int position;
public MyMenuItemClickListener(int positon) {
this.position=positon;
}
@Override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.action_delete:
RemoveCategory=mData.get(position).getId();
deletevolley();
notifyItemRemoved(position);
notifyDataSetChanged();
return true;
case R.id.action_edit:
editCategory=mData.get(position).getId();
editHeadline(position);
return true;
default:
}
return false;
}
}
@Override
public int getItemCount() {
return mData.size();
}
public void deletevolley() {
JSON_URL="https://alot.ae/api/disable_ads.php";
StringRequest stringRequest = new StringRequest(Request.Method.POST, JSON_URL,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
if (jsonObject.getInt("success") == 0) {
Toast.makeText(mContext, jsonObject.getString("message"), Toast.LENGTH_LONG).show();
} else if (jsonObject.getInt("success") == 1) {
Toast.makeText(mContext, jsonObject.getString("message"), Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(mContext,"Check Internet connection", Toast.LENGTH_LONG).show();
}
}){
@Override
protected Map<String, String> getParams() {
// Creating Map String Params.
Map<String, String> params = new HashMap<String, String>();
// Adding All values to Params.
SharedPreferences prefs = mContext.getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
String userid = prefs.getString("userId", "");
params.put("user_id",userid);
params.put("id",RemoveCategory);
return params;
}
};
requestQueue = Volley.newRequestQueue(mContext);
requestQueue.add(stringRequest) ;
}
private void editHeadline(final int position) {
//Creating a LayoutInflater object for the dialog box
LayoutInflater li = LayoutInflater.from(mContext);
//Creating a view to get the dialog box
View confirmDialog = li.inflate(R.layout.edit_my_ads, null);
arrayList_categry=new ArrayList<>();
modelList = new ArrayList<Model>();
spin_category=confirmDialog.findViewById(R.id.editAdCatogoery);
spin_sub_category=confirmDialog.findViewById(R.id.editAdSubCatogoery);
spin_product_for=confirmDialog.findViewById(R.id.editAdproperty_for);
spin_product_typ=confirmDialog.findViewById(R.id.editAdproperty_typ);
condition=confirmDialog.findViewById(R.id.editAdCondition);
negotiable=confirmDialog.findViewById(R.id.editAdNegotiable);
city=confirmDialog.findViewById(R.id.editadLocation);
ad_age=confirmDialog.findViewById(R.id.editAdage);
imageView1=confirmDialog.findViewById(R.id.editadimageView);
lin_product=confirmDialog.findViewById(R.id.editlin_layout_prdct);
lin_category=confirmDialog.findViewById(R.id.editlay_sub);
lin_product.setVisibility(View.GONE);
lin_category.setVisibility(View.VISIBLE);
spin_category.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
sub_category=spin_category.getItemAtPosition(spin_category.getSelectedItemPosition()).toString().trim();
modelList.clear();
if(sub_category.contentEquals("Properties"))
{
saveinformation1();
lin_product.setVisibility(View.VISIBLE);
lin_category.setVisibility(View.GONE);
}
else
{ saveinformation1();
lin_category.setVisibility(View.VISIBLE);
lin_product.setVisibility(View.GONE);
}
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
// DO Nothing here
}
});
imageView1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showPictureDialog();
}
});
//
Button buttonEdit = (Button) confirmDialog.findViewById(R.id.updateAdpostButton);
final EditText editTextHeadline = (EditText) confirmDialog.findViewById(R.id.editAdTitle);
editTextHeadline.setText(mData.get(position).getAd_title());
final EditText editTextDes = (EditText) confirmDialog.findViewById(R.id.editAdDescription);
editTextDes.setText(mData.get(position).getAd_description());
final EditText editTextprice = (EditText) confirmDialog.findViewById(R.id.editAdPrice);
editTextprice.setText(mData.get(position).getAd_price());
final EditText editTextnumber = (EditText) confirmDialog.findViewById(R.id.editAdcontactpersonnumber);
editTextnumber.setText(mData.get(position).getAd_usermobile());
final EditText editTextname = (EditText) confirmDialog.findViewById(R.id.editAdcontactperson);
editTextname.setText(mData.get(position).getAd_username());
AlertDialog.Builder alert = new AlertDialog.Builder(mContext);
//Adding our dialog box to the view of alert dialog
alert.setView(confirmDialog);
//Creating an alert dialog
final AlertDialog alertDialog = alert.create();
alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.BLUE ));
//Displaying the alert dialog
alertDialog.show();
buttonEdit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final String headline = editTextHeadline.getText().toString().trim();
final String des = editTextDes.getText().toString().trim();
final String price = editTextprice.getText().toString().trim();
final String number = editTextnumber.getText().toString().trim();
final String name = editTextname.getText().toString().trim();
final String category = spin_category.getSelectedItem().toString().trim();
final String age = ad_age.getSelectedItem().toString().trim();
final String cityname = city.getSelectedItem().toString().trim();
final String negotiables = negotiable.getSelectedItem().toString().trim();
final String conditions = condition.getSelectedItem().toString().trim();
final String productfor = spin_product_for.getSelectedItem().toString().trim();
final String producttype = spin_product_typ.getSelectedItem().toString().trim();
Toast.makeText(mContext, "Updating...", Toast.LENGTH_SHORT).show();
SharedPreferences prefs = mContext.getApplicationContext().getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
String userID = prefs.getString("userId","");
HashMap<String, String> hashMap = new HashMap<String, String>();
hashMap.put("user_id", userID);
hashMap.put("id", editCategory);
hashMap.put("ad_category", category);
hashMap.put("ad_sub_category", sub_category);
hashMap.put("property_type", producttype);
hashMap.put("property_to",productfor);
hashMap.put("ad_title", headline);
hashMap.put("ad_description", des);
hashMap.put("ad_condition", conditions);
hashMap.put("age", age);
hashMap.put("ad_price", price);
hashMap.put("negotiable", negotiables);
hashMap.put("ad_username", name);
hashMap.put("ad_usermobile", number);
hashMap.put("ad_city", cityname);
AndroidNetworking.post("https://alot.ae/api/edit_my_ads.php")
.addBodyParameter(hashMap)
.setTag("agredwe")
.setPriority(Priority.HIGH)
.build()
.getAsString(new StringRequestListener() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
if (jsonObject.getInt("success") == 0)
{
Toast.makeText(mContext, jsonObject.getString("message"), Toast.LENGTH_LONG).show();
}
else if (jsonObject.getInt("success") == 1)
{
Toast.makeText(mContext, jsonObject.getString("message"), Toast.LENGTH_LONG).show();
notifyDataSetChanged();
}
else
Toast.makeText(mContext, jsonObject.getString("message"), Toast.LENGTH_LONG).show();
}
catch (JSONException e)
{
e.printStackTrace();
}
}
@Override
public void onError(ANError anError) {
Toast.makeText(mContext, "Couldnt update", Toast.LENGTH_SHORT).show();
alertDialog.dismiss();
}
});
}
});
}
private void showPictureDialog(){
android.support.v7.app.AlertDialog.Builder pictureDialog = new android.support.v7.app.AlertDialog.Builder(mContext);
pictureDialog.setTitle("Select Action");
String[] pictureDialogItems = {
"Select photo from gallery",
"Capture photo from camera" };
pictureDialog.setItems(pictureDialogItems,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
openImageChooser();
break;
case 1:
takePhotoFromCamera();
break;
}
}
});
pictureDialog.show();
}
private void takePhotoFromCamera() {
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
((Activity) mContext).startActivityForResult(Intent.createChooser(intent, "Take Picture"),CAMERA);
}
private void openImageChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_PICK);
((Activity) mContext).startActivityForResult(Intent.createChooser(intent, "Select Picture"),SELECT_PICTURE);
Log.d("Edit",);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
selectedImageUri = data.getData();
if (null != selectedImageUri) {
}
if (requestCode == SELECT_PICTURE) {
try {
bitmap1 = MediaStore.Images.Media.getBitmap(mContext.getContentResolver(), selectedImageUri);
imageView1.setImageBitmap(bitmap1);
} catch (IOException e) {
e.printStackTrace();
}
} else if (requestCode == CAMERA) {
try {
bitmap1 = MediaStore.Images.Media.getBitmap(mContext.getContentResolver(), selectedImageUri);
imageView1.setImageBitmap(bitmap1);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
private void saveinformation1() {
JsonURL="https://alot.ae/api/loadspinner.php?ad_category="+sub_category;
JsonURL=JsonURL.replaceAll(" ","%20");
StringRequest stringRequest = new StringRequest(Request.Method.GET,JsonURL,
new Response.Listener<String>() {
@Override
public void onResponse(String ServerResponse) {
// Hiding the progress dialog after all task complete.
// pDialog.dismiss();
if (ServerResponse != null) {
try {
JSONObject jsonObj = new JSONObject(ServerResponse);
if (jsonObj != null) {
JSONArray categories = jsonObj
.getJSONArray("modal");
for (int i = 0; i < categories.length(); i++) {
JSONObject catObj = (JSONObject) categories.get(i);
Model cat = new Model(catObj.getString("sub_category"));
modelList.add(cat);
}
populateSpinner();
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("JSON Data", "Didn't receive any data from server!");
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
// Hiding the progress dialog after all task complete.
// pDialog.dismiss();
// Showing error message if something goes wrong.
Toast.makeText(mContext, "Check Internet connection", Toast.LENGTH_LONG).show();
}
}) {
};
RequestQueue requestQueue = Volley.newRequestQueue(mContext);
requestQueue.add(stringRequest);
}
private void populateSpinner() {
List<String> lables = new ArrayList<String>();
for (int i = 0; i < modelList.size(); i++) {
lables.add(modelList.get(i).getSub_category());
}
// Creating adapter for spinner
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(mContext,
android.R.layout.simple_spinner_item, lables);
// Drop down layout style - list view with radio button
spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spin_sub_category.setAdapter(spinnerAdapter);
}
}
答案 0 :(得分：1)
您所问的示例，我刚刚使用过相机。您可以在代码中使用。 不要忘记提供摄像头许可，因为我不会对其进行检查。
MainActivity.java
ThisWorkbook.CloseRecyclerAdapter.java
final RecyclerView recyclerView = findViewById(R.id.list);
List<String> name = new LinkedList<>();
for(int i=0;i<200;i++){
name.add("Index = "+i);
}
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(new RecyclerAdapter(name, new RecyclerAdapter.ImageHelper() {
@Override
public void onImageSelect(ImageView imagView) {
recyclerImage = imagView;
Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePicture, 0);//zero can be replaced with any action code
}
}));
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case 0:
if(resultCode == RESULT_OK){
Bitmap bm = (Bitmap) data.getExtras().get("data");
recyclerImage.setImageBitmap(bm);
}
break;
}
}
_layoutItem.xml
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.MyViewHolder>{
private List<String> listId;
private ImageHelper imageHelper;
public RecyclerAdapter(List<String> listId,ImageHelper imageHelper) {
this.listId = listId;
this.imageHelper = imageHelper;
}
@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view= LayoutInflater.from(parent.getContext())
.inflate(R.layout._layoutItem,parent,false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull final MyViewHolder holder, int position) {
// holder.img_brand.setImageResource(""+listId.get(position));
holder.textView.setText(listId.get(position));
holder.img_brand.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(imageHelper!=null)
imageHelper.onImageSelect(holder.img_brand);
}
});
}
@Override
public int getItemCount() {
return listId.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder {
public ImageView img_brand;
public TextView textView;
public MyViewHolder(View itemView) {
super(itemView);
img_brand=itemView.findViewById(R.id.imageView);
textView=itemView.findViewById(R.id.text);
}
}
public interface ImageHelper{
void onImageSelect(ImageView imagView);
}
}