I am building an App that will add emergency contacts but it has to be strictly 10 people who can be an emergency contact per each user and if it exceeds that it must tell the user that his/her emergency contacts are fully, problem is i don't know how to set the allowed values to be
public class EmergencyList extends AppCompatActivity {
private Toolbar mToolbar;
private TextView mProfileName, mProfileStatus, mProfileFriendsCount;
private Button mProfileSendReqBtn, mDeclineBtn;
private DatabaseReference mUsersDatabase;
private ProgressDialog mProgressDialog;
private DatabaseReference mFriendReqDatabase;
private DatabaseReference mFriendDatabase;
private DatabaseReference mNotificationDatabase;
private ImageView mProfileImage;
private DatabaseReference mRootRef;
private FirebaseUser mCurrent_user;
private String mCurrent_state;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_emergency_list);
mToolbar = (Toolbar)findViewById(R.id.user_Appbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setTitle("Who to notify in emergency");
mToolbar.setTitleTextColor(android.graphics.Color.WHITE);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
final String user_id = getIntent().getStringExtra("user_id");
mRootRef = FirebaseDatabase.getInstance().getReference();
mUsersDatabase = FirebaseDatabase.getInstance().getReference().child("Users").child(user_id);
mFriendReqDatabase = FirebaseDatabase.getInstance().getReference().child("Connection_req");
mFriendDatabase = FirebaseDatabase.getInstance().getReference().child("Emergency_Contacts");
mNotificationDatabase = FirebaseDatabase.getInstance().getReference().child("Emergency_Notification");
mCurrent_user = FirebaseAuth.getInstance().getCurrentUser();
mProfileImage = (ImageView) findViewById(R.id.profile_image);
mProfileName = (TextView) findViewById(R.id.profile_displayName);
mProfileStatus = (TextView) findViewById(R.id.profile_status);
mProfileFriendsCount = (TextView) findViewById(R.id.profile_totalFriends);
mProfileSendReqBtn = (Button) findViewById(R.id.profile_send_req_btn);
mDeclineBtn = (Button) findViewById(R.id.profile_decline_btn);
mCurrent_state = "not_emergency_contact";
mDeclineBtn.setVisibility(View.INVISIBLE);
mDeclineBtn.setEnabled(false);
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setTitle("Loading User Data");
mProgressDialog.setMessage("Please wait while we load the user data.");
mProgressDialog.setCanceledOnTouchOutside(false);
mProgressDialog.show();
mUsersDatabase.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String display_name = dataSnapshot.child("name").getValue().toString();
String status = dataSnapshot.child("status").getValue().toString();
String image = dataSnapshot.child("profile_picture").getValue().toString();
mProfileName.setText(display_name);
mProfileStatus.setText(status);
Picasso.with(EmergencyList.this).load(image).placeholder(R.drawable.my_profile).into(mProfileImage);
if(mCurrent_user.getUid().equals(user_id)){
mDeclineBtn.setEnabled(false);
mDeclineBtn.setVisibility(View.INVISIBLE);
mProfileSendReqBtn.setEnabled(false);
mProfileSendReqBtn.setVisibility(View.INVISIBLE);
}
//--------------- FRIENDS LIST / REQUEST FEATURE -----
mFriendReqDatabase.child(mCurrent_user.getUid()).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(dataSnapshot.hasChild(user_id)){
String req_type = dataSnapshot.child(user_id).child("emergency_type").getValue().toString();
if(req_type.equals("received")){
mCurrent_state = "emergency_received";
mProfileSendReqBtn.setText("Accept As Emergency ");
mDeclineBtn.setVisibility(View.VISIBLE);
mDeclineBtn.setEnabled(true);
} else if(req_type.equals("sent")) {
mCurrent_state = "emergency_sent";
mProfileSendReqBtn.setText("Cancel Emergency Request");
mDeclineBtn.setVisibility(View.INVISIBLE);
mDeclineBtn.setEnabled(false);
}
mProgressDialog.dismiss();
} else {
mFriendDatabase.child(mCurrent_user.getUid()).addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(dataSnapshot.hasChild(user_id)){
mCurrent_state = "emergency_contact";
mProfileSendReqBtn.setText("Remove "+mProfileName.getText() + " As Emergency Contact");
mDeclineBtn.setVisibility(View.INVISIBLE);
mDeclineBtn.setEnabled(false);
}
mProgressDialog.dismiss();
}
@Override
public void onCancelled(DatabaseError databaseError) {
mProgressDialog.dismiss();
}
});
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
mProfileSendReqBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mProfileSendReqBtn.setEnabled(false);
// --------------- NOT FRIENDS STATE ------------
if(mCurrent_state.equals("not_emergency_contact")){
DatabaseReference newNotificationref = mRootRef.child("Emergency_Notification").child(user_id).push();
String newNotificationId = newNotificationref.getKey();
HashMap<String, String> notificationData = new HashMap<>();
notificationData.put("from", mCurrent_user.getUid());
notificationData.put("type", "request");
Map requestMap = new HashMap();
requestMap.put("Connection_req/" + mCurrent_user.getUid() + "/" + user_id + "/emergency_type", "sent");
requestMap.put("Connection_req/" + user_id + "/" + mCurrent_user.getUid() + "/emergency_type", "received");
requestMap.put("Emergency_Notifications/" + user_id + "/" + newNotificationId, notificationData);
mRootRef.updateChildren(requestMap, new DatabaseReference.CompletionListener() {
@Override
public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
if(databaseError != null){
Toast.makeText(EmergencyList.this, "There was some error in sending request", Toast.LENGTH_SHORT).show();
} else {
mCurrent_state = "emergency_sent";
mProfileSendReqBtn.setText("Cancel Emergency Contact");
}
mProfileSendReqBtn.setEnabled(true);
}
});
}
// - -------------- CANCEL REQUEST STATE ------------
if(mCurrent_state.equals("emergency_sent")){
mFriendReqDatabase.child(mCurrent_user.getUid()).child(user_id).removeValue().addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
mFriendReqDatabase.child(user_id).child(mCurrent_user.getUid()).removeValue().addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
mProfileSendReqBtn.setEnabled(true);
mCurrent_state = "not_emergency_contact";
mProfileSendReqBtn.setText("Add As Emergency Contact");
mDeclineBtn.setVisibility(View.INVISIBLE);
mDeclineBtn.setEnabled(false);
}
});
}
});
}
// ------------ REQ RECEIVED STATE ----------
if(mCurrent_state.equals("emergency_received")){
final String currentDate = DateFormat.getDateTimeInstance().format(new Date());
Map friendsMap = new HashMap();
friendsMap.put("Emergency_Contact/" + mCurrent_user.getUid() + "/" + user_id + "/date", currentDate);
friendsMap.put("Emergency_Contact/" + user_id + "/" + mCurrent_user.getUid() + "/date", currentDate);
friendsMap.put("Connection_req/" + mCurrent_user.getUid() + "/" + user_id, null);
friendsMap.put("Connection_req/" + user_id + "/" + mCurrent_user.getUid(), null);
mRootRef.updateChildren(friendsMap, new DatabaseReference.CompletionListener() {
@Override
public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
if(databaseError == null){
mProfileSendReqBtn.setEnabled(true);
mCurrent_state = "emergency_contact";
mProfileSendReqBtn.setText("Remove " + mProfileName.getText() + " As Emergency Contact");
mDeclineBtn.setVisibility(View.INVISIBLE);
mDeclineBtn.setEnabled(false);
} else {
String error = databaseError.getMessage();
Toast.makeText(EmergencyList.this, error, Toast.LENGTH_SHORT).show();
}
}
});
}
// ------------ UNFRIENDS ---------
if(mCurrent_state.equals("emergency_contact")){
Map unfriendMap = new HashMap();
unfriendMap.put("Emergency_Contact/" + mCurrent_user.getUid() + "/" + user_id, null);
unfriendMap.put("Emergency_Contact/" + user_id + "/" + mCurrent_user.getUid(), null);
mRootRef.updateChildren(unfriendMap, new DatabaseReference.CompletionListener() {
@Override
public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
if(databaseError == null){
mCurrent_state = "not_emergency_contact";
mProfileSendReqBtn.setText("Add As Emergency Contact");
mDeclineBtn.setVisibility(View.INVISIBLE);
mDeclineBtn.setEnabled(false);
} else {
String error = databaseError.getMessage();
Toast.makeText(EmergencyList.this, error, Toast.LENGTH_SHORT).show();
}
mProfileSendReqBtn.setEnabled(true);
}
});
}
}
});
}
}
Any advice on how to add only a finite number of people as the emergency contacts and when it exceeds that number to return a message saying the emergency contacts are full?
