I have this code that retrieves only one image. How can I edit it to retrieve more than an image?
And how can I attach a URL with the images in order to if the user clicks the image the URL will open?
public class MainActivity extends AppCompatActivity {
ImageView rImage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rImage = findViewById(R.id.rImage);
FirebaseDatabase firebaseDatabase = FirebaseDatabase.getInstance();
DatabaseReference databaseReference = firebaseDatabase.getReference();
DatabaseReference getImage = databaseReference.child("image");
getImage.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String link = dataSnapshot.getValue(String.class);
Picasso.get().load(link).into(rImage);
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
// we are showing that error message in toast
Toast.makeText(MainActivity.this, "Error Loading Image", Toast.LENGTH_SHORT).show();
}
});
}
}
This is the XML code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<!-- we are using ImageView for displaying image-->
<ImageView
android:id="@+id/rImage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp" />
</LinearLayout>
First add a button in your xml
.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<!-- we are using ImageView for displaying image-->
<ImageView
android:id="@+id/rImage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp" />
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
Now by that button onclick
you will get your image .
public class MainActivity extends AppCompatActivity {
ImageView rImage;
Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rImage = findViewById(R.id.rImage);
//button reference
btn= findViewById(R.id.btn);
FirebaseDatabase firebaseDatabase = FirebaseDatabase.getInstance();
DatabaseReference databaseReference = firebaseDatabase.getReference();
DatabaseReference getImage = databaseReference.child("image");
//setting onclick.
btn.setOnClickListener(v -> {
getImage.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String link = dataSnapshot.getValue(String.class);
Picasso.get().load(link).into(rImage);
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
// we are showing that error message in toast
Toast.makeText(MainActivity.this, "Error Loading Image", Toast.LENGTH_SHORT).show();
}
});
});
}
}
Maybe you can try to change your ImageView
into an ImageButton
so you can have a ClickListener and your image aswell
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