Android 未在firebase数据库中存储的foodlist中查看图像
尝试在此recycleradapter中上载图像时，图像存储在firebase数据库中，但无法在UI或recycleradapter食物类别中查看，下面是屏幕截图 将显示URL而不是图像： Home.javaAndroid 未在firebase数据库中存储的foodlist中查看图像,android,firebase,firebase-storage,Android,Firebase,Firebase Storage,尝试在此recycleradapter中上载图像时，图像存储在firebase数据库中，但无法在UI或recycleradapter食物类别中查看，下面是屏幕截图 将显示URL而不是图像： Home.java public class Home extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { FirebaseDatabase database; Data
public class Home extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
FirebaseDatabase database;
DatabaseReference category;
FirebaseStorage storage;
StorageReference storageReference;
TextView txtFullName;
MaterialEditText edtName;
Button btnSelect,btnUpload;
Category newCategory;
Uri saveUri;
private final int PICK_IMAGE_REQUEST = 123;
DrawerLayout drawer;
RecyclerView recyler_menu;
RecyclerView.LayoutManager layoutManager;
FirebaseRecyclerAdapter<Category,MenuViewHolder> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("MenuManagement");
setSupportActionBar(toolbar);
//init firebase
database = FirebaseDatabase.getInstance();
category = database.getReference("Category");
storage = FirebaseStorage.getInstance();
storageReference = storage.getReference();
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
showDialog();
}
});
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//set Name for user
View headerview = navigationView.getHeaderView(0);
txtFullName = (TextView) headerview.findViewById(R.id.txtFullName);
txtFullName = (TextView)findViewById(R.id.txtFullName);
//load menu
recyler_menu = (RecyclerView) findViewById(R.id.recyclermenu);
recyler_menu.setHasFixedSize(true);
layoutManager = new LinearLayoutManager(this);
recyler_menu.setLayoutManager(layoutManager);
loadMenu();
}
private void showDialog() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(Home.this);
alertDialog.setTitle("Add new Category");
alertDialog.setMessage("Please fill full information");
LayoutInflater inflater = this.getLayoutInflater();
View add_menu_layout = inflater.inflate(R.layout.add_new_menu_layout, null);
edtName = add_menu_layout.findViewById(R.id.edtName);
btnSelect = add_menu_layout.findViewById(R.id.btnSelect);
btnUpload = add_menu_layout.findViewById(R.id.btnUpload);
btnSelect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
chooseImage();
}
});
btnUpload.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
uploadImage();
}
});
alertDialog.setView(add_menu_layout);
alertDialog.setIcon(R.drawable.ic_shopping_cart_black_24dp);
alertDialog.setPositiveButton("YES", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
if(newCategory !=null)
{
category.push().setValue(newCategory);
Snackbar.make(drawer,"New Category"+ newCategory.getName()+"was added",
Snackbar.LENGTH_SHORT ).show();
}
}
});
alertDialog.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
alertDialog.show();
}
private void uploadImage() {
if(saveUri!=null) {
final ProgressDialog mDialog = new ProgressDialog(this);
mDialog.setMessage("Uploading...");
mDialog.show();
String imageName = UUID.randomUUID().toString();
final StorageReference imageFolder = storageReference.child("images/" + imageName);
imageFolder.putFile(saveUri)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
mDialog.dismiss();
Toast.makeText(Home.this, "Uploaded ", Toast.LENGTH_SHORT).show();
imageFolder.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
newCategory = new Category(edtName.getText().toString(), uri.toString());
}
});
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
mDialog.dismiss();
Toast.makeText(Home.this,""+e.getMessage(),Toast.LENGTH_SHORT).show();
}
})
.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
@Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
double progress = (100.0 * taskSnapshot.getBytesTransferred() / taskSnapshot.getTotalByteCount());
mDialog.setMessage("Uploaded"+progress+"%");
}
});
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK
&& data != null && data.getData() != null)
{
saveUri = data.getData();
btnSelect.setText("Image Selected !");
}
}
private void chooseImage() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"),PICK_IMAGE_REQUEST);
}
private void loadMenu() {
FirebaseRecyclerOptions<Category> options =
new FirebaseRecyclerOptions.Builder<Category>()
.setQuery(category, Category.class).build();
adapter = new FirebaseRecyclerAdapter<Category, MenuViewHolder>(options) {
@NonNull
@Override
public MenuViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.menu_item, parent, false);
return new MenuViewHolder(view);
}
@Override
protected void onBindViewHolder(@NonNull MenuViewHolder holder, int position, @NonNull Category model) {
//do binding stuff
holder.txtMenuName.setText(model.getName());
Picasso.with(getBaseContext()).load(model.getImage()).into(holder.imageView);
holder.setItemClickListener(new ItemClickListener() {
@Override
public void onClick(View view, int position, boolean isLongClick) {
//Intent foodList = new Intent(Home.this,FoodList.class);
//foodList.putExtra("CategoryId",adapter.getRef(position).getKey());
//startActivity(foodList);
}
});
}
};
recyler_menu.setAdapter(adapter);
//start listening
adapter.startListening();
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
基本上每个Firebase存储文件都有两个链接
我认为您需要提供从Firebase存储到Firebase数据库的图像下载链接 我认为url有一些问题。与图像相关的url错误，或者该字段可能包含其他内容。这样做：-
if (! model.getImage().contains("https")) {
holder.imageView.setImageResource(R.drawable.defaultImg);
}
else {
Picasso.get().load(model.getImage()).into(holder.imageView);
}
Process: com.example.sharma.digimenuserver, PID: 29800
java.lang.IllegalArgumentException: Path must not be empty.
at com.squareup.picasso.Picasso.load(Picasso.java:297)
at com.example.sharma.digimenuserver.Home$9.onBindViewHolder(Home.java:252)
at com.example.sharma.digimenuserver.Home$9.onBindViewHolder(Home.java:235)
at com.firebase.ui.database.FirebaseRecyclerAdapter.onBindViewHolder(FirebaseRecyclerAdapter.java:122)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6673)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6714)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5647)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5913)
at android.support.v7.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:285)
at android.support.v7.widget.GapWorker.flushTaskWithDeadline(GapWorker.java:342)
at android.support.v7.widget.GapWorker.flushTasksWithDeadline(GapWorker.java:358)
at android.support.v7.widget.GapWorker.prefetch(GapWorker.java:365)
at android.support.v7.widget.GapWorker.run(GapWorker.java:396)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
if (! model.getImage().contains("https")) {
holder.imageView.setImageResource(R.drawable.defaultImg);
}
else {
Picasso.get().load(model.getImage()).into(holder.imageView);
}