I have a page where the profiles of the users are displayed in a GridView. Each grid contains profiles of the users(name,id,age etc) along with a button which takes us to next screen.
I implemented the Grid Expand functionality such that when the user clicks the grid , the grid expands to show more information. I referenced the following github code for the expand functionality: https://github.com/thewaychung/ExpandableGridView
But when I implemented this in my project , I get the expanded view overlapped on the existing grid view instead of showing up when the grid item is clicked.
Here's my code:
public class MainActivity extends AppCompatActivity {
GridView gv;
FirebaseDatabase database;
DatabaseReference db;
FirebaseListAdapter adapter;
FirebaseListAdapter childAdapter;
Button t;
GridView cv;
TextInputLayout parentInfo;
TextInputLayout childInfo;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ExpandableGridView gv = findViewById(R.id.gridView);
final GridView cv = findViewById(R.id.childView);
t.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this,Next.class);
startActivity(i);
}
});
//SETUP FIREBASE
db = FirebaseDatabase.getInstance().getReference();
Log.i("TEST", "TEST");
Query query = FirebaseDatabase.getInstance().getReference().child("users");
FirebaseListOptions<users> options = new FirebaseListOptions.Builder<users>()
.setLayout(R.layout.users)
.setLifecycleOwner(MainActivity.this)
.setQuery(query, users.class)
.build();
//ADAPTER
adapter = new FirebaseListAdapter(options) {
@Override
protected void populateView(@NonNull View v, @NonNull Object model, int position) {
TextView name = v.findViewById(R.id.name);
TextView age = v.findViewById(R.id.age);
TextView mid = v.findViewById(R.id.mid);
ImageView image = v.findViewById(R.id.userImage);
image.setScaleType(ImageView.ScaleType.FIT_XY);
TextView cont = v.findViewById(R.id.cont);
users mt = (users) model;
name.setText(" Name: "+ mt.getName());
age.setText(" Age: "+ mt.getAge().toString());
mid.setText(" ID: "+ mt.getMid());
cont.setText(mt.getCount().toString());
Picasso.with(MainActivity.this).load(mt.getImage()).into(image);
Button d = v.findViewById(R.id.d);
parentInfo = v.findViewById(R.id.parentInfo);
parentInfo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,"This is the parent information",Toast.LENGTH_SHORT).show();
}
});
d.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this,Next.class);
startActivity(i);
}
});
}
};
gv.setAdapter(adapter);
childAdapter = new FirebaseListAdapter(options) {
@Override
protected void populateView(@NonNull View v, @NonNull Object model, int position) {
TextView name = v.findViewById(R.id.name);
TextView age = v.findViewById(R.id.age);
TextView mid = v.findViewById(R.id.mid);
ImageView image = v.findViewById(R.id.userImage);
image.setScaleType(ImageView.ScaleType.FIT_XY);
TextView cont = v.findViewById(R.id.cont);
users mt = (users) model;
name.setText(" Name: "+mt.getName());
age.setText(" Age: "+mt.getAge().toString());
mid.setText(" ID: "+mt.getMid());
cont.setText(mt.getCount().toString());
Picasso.with(MainActivity.this).load(mt.getImage()).into(image);
Button d = v.findViewById(R.id.d);
childInfo = v.findViewById(R.id.parentInfo);
childInfo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,"This is the child information",Toast.LENGTH_SHORT).show();
}
});
}
};
cv.setAdapter(childAdapter);
final ExpandableGridView parentGridView = (ExpandableGridView)findViewById(R.id.gridView);
gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//expand the grid view
gv.expandGridViewAtView(view,childAdapter);
}
});
//click event listener of sub gridview
gv.setOnExpandItemClickListener(new ExpandableGridView.OnExpandItemClickListener() {
@Override
public void onItemClick(int position, Object clickPositionData) {
Toast.makeText(getBaseContext(),clickPositionData.toString()+"clicked",Toast.LENGTH_LONG).show();
}
});
gv.setOnExpandItemClickListener(new ExpandableGridView.OnExpandItemClickListener() {
@Override
public void onItemClick(int position, Object clickPositionData) {
Toast.makeText(getBaseContext(),clickPositionData.toString()+"clicked",Toast.LENGTH_LONG).show();
}
});
}
@Override
protected void onStart() {
super.onStart();
adapter.startListening();
}
@Override
protected void onStop() {
super.onStop();
adapter.stopListening();
}
}
Basically the childView is overlapping the parentView instead of showing up when the parent item is clicked i.e. the grid item.
This is my updated code:
public class MainActivity extends AppCompatActivity {
GridView gv;
FirebaseDatabase database;
DatabaseReference db;
FirebaseListAdapter adapter;
FirebaseListAdapter childAdapter;
Button t;
GridView cv;
TextInputLayout parentInfo;
TextView child;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button t = findViewById(R.id.payBtn);
final ExpandableGridView gv = findViewById(R.id.gridView);
//final GridView cv = findViewById(R.id.childView);
t.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this,Next.class);
startActivity(i);
}
});
//SETUP FIREBASE
db = FirebaseDatabase.getInstance().getReference();
Log.i("TEST", "TEST");
Query query = FirebaseDatabase.getInstance().getReference().child("users");
FirebaseListOptions<users> options = new FirebaseListOptions.Builder<users>()
.setLayout(R.layout.users)
.setLifecycleOwner(MainActivity.this)
.setQuery(query, users.class)
.build();
//ADAPTER
adapter = new FirebaseListAdapter(options) {
@Override
protected void populateView(@NonNull View v, @NonNull Object model, int position) {
TextView name = v.findViewById(R.id.name);
TextView age = v.findViewById(R.id.age);
TextView mid = v.findViewById(R.id.mid);
ImageView image = v.findViewById(R.id.userImage);
image.setScaleType(ImageView.ScaleType.FIT_XY);
TextView cont = v.findViewById(R.id.cont);
users mt = (users) model;
name.setText(" Name: "+ mt.getName());
age.setText(" Age: "+ mt.getAge().toString());
mid.setText(" ID: "+ mt.getMid());
cont.setText(mt.getCount().toString());
Picasso.with(MainActivity.this).load(mt.getImage()).into(image);
Button d = v.findViewById(R.id.d);
parentInfo = v.findViewById(R.id.parentInfo);
parentInfo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,"This is the parent information",Toast.LENGTH_SHORT).show();
}
});
d.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this,Payment.class);
startActivity(i);
}
});
}
};
gv.setAdapter(adapter);
childAdapter = new FirebaseListAdapter(options) {
@Override
protected void populateView(@NonNull View v, @NonNull Object model, int position) {
TextView field = v.findViewById(R.id.field);
users mt = (users) model;
field.setText(" Field: "+ mt.getField());
child = v.findViewById(R.id.field);
child.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,"This is the child information",Toast.LENGTH_SHORT).show();
}
});
}
};
//final ExpandableGridView parentGridView = (ExpandableGridView)findViewById(R.id.gridView);
gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//expand the grid view
gv.expandGridViewAtView(view,childAdapter);
}
});
//click event listener of sub gridview
gv.setOnExpandItemClickListener(new ExpandableGridView.OnExpandItemClickListener() {
@Override
public void onItemClick(int position, Object clickPositionData) {
Toast.makeText(getBaseContext(),clickPositionData.toString()+"clicked",Toast.LENGTH_LONG).show();
}
});
}
@Override
protected void onStart() {
super.onStart();
adapter.startListening();
}
@Override
protected void onStop() {
super.onStop();
adapter.stopListening();
}
}You are getting the wrong idea here. You just need 1 expandable gridview and 2 adapters: 1 for parent and 1 for child like in the link you share
ExpandableGridView countryGridView = (ExpandableGridView)findViewById(R.id.country_grid);
ArrayAdapter<String> countryAdapter = new ArrayAdapter<String>(getBaseContext(),R.layout.grid_item, R.id.grid_item, countryData);
// 1.Set adapter for the grid view
countryGridView.setAdapter(countryAdapter);
// 2.Add click event listener to the grid view, expand grid view when item is clicked
countryGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// expand the grid view
countryGridView.expandGridViewAtView(view, new ArrayAdapter<String>(getBaseContext(),
R.layout.grid_item, R.id.grid_item, stateData));
}
});
The way you are doing is you include 2 gridviews so you just need to remove the normal gridview. Remove R.id.childView from your code.