我正在创建一个游戏。在一个活动中，有2个按钮：开始游戏按钮和加入游戏按钮。
点击开始游戏按钮时，该应用会打开包含所有可用用户的活动。当单击用户时，会出现一个对话框，询问用户是否要向单击的用户发送邀请。如果是，将随机创建一个6位代码并将其添加到数据库中。然后，单击的用户将收到该邀请的通知。如果应用程序在后台运行，则通知将显示在应用程序内部。如果没有，它将在通知栏中显示为正常通知。
单击加入游戏按钮时，将出现一个包含EditText的对话框，要求输入代码。如果代码在Firestore中存在，则游戏将开始。否则，将显示错误消息。
我正在尝试执行此操作，因为我不知道如何执行操作。
无论如何，如果游戏开始，这就是我尝试的目的：
holder.view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (userID.equals(FirebaseAuth.getInstance().getCurrentUser().getDisplayName())) {
Toast.makeText(context, "You can't play with yourself", Toast.LENGTH_SHORT).show();
} else {
final AlertDialog.Builder gameInviteBuilder = new AlertDialog.Builder(context);
gameInviteBuilder.setTitle("Would you like to invite " + username + " to a game?");
gameInviteBuilder.setPositiveButton("SURE!", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
char[] chars1 = "0123456789".toCharArray();
StringBuilder stringBuilder = new StringBuilder();
Random random = new Random();
for (int i = 0; i < 6; i++) {
char c1 = chars1[random.nextInt(chars1.length)];
stringBuilder.append(c1);
}
final String gameID = stringBuilder.toString();
final String userUsername = firebaseUser.getDisplayName();
final Map<String, String> gameMap = new HashMap<>();
gameMap.put("id", gameID);
gameMap.put("player", userUsername);
gameMap.put("playing with", username);
firebaseFirestore.collection("Games").document(gameID).set(gameMap).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
firebaseFirestore.collection("Users").document(username).collection("Games").document(gameID).set(gameMap);
firebaseFirestore.collection("Users").document(userUsername).collection("Games").document(gameID).set(gameMap);
if (!username.equals(userUsername)) {
sendNotification();
}
}
private void sendNotification() {
Intent notificationInviteGameIntent = new Intent(context, GameActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationInviteGameIntent, 0);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context, "1");
notificationBuilder.setSmallIcon(R.mipmap.ic_launcher);
notificationBuilder.setContentTitle("Ensan 7ayawan Shay2");
notificationBuilder.setContentText(username + " has invited you to a game");
notificationBuilder.setPriority(NotificationCompat.PRIORITY_DEFAULT);
notificationBuilder.setContentIntent(pendingIntent);
notificationBuilder.setAutoCancel(true);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
// notificationId is a unique int for each notification that you must define
notificationManager.notify(Integer.parseInt(gameID), notificationBuilder.build());
}
});
}
});
gameInviteBuilder.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alertDialog = gameInviteBuilder.create();
alertDialog.show();
}
}
});
在if循环中添加 sendNotification（）方法时出现错误。这不是一种方法。但是我做到了，所以我没有出错。
这是用于加入游戏按钮的：
joinGameButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
LayoutInflater inflater = getLayoutInflater();
final EditText codeText = new EditText(GameChooserActivity.this);
AlertDialog.Builder joinGameDialogBuilder = new AlertDialog.Builder(GameChooserActivity.this);
joinGameDialogBuilder.setTitle("Enter Code");
joinGameDialogBuilder.setView(inflater.inflate(R.layout.join_game_enter_code, null));
joinGameDialogBuilder.setPositiveButton("Join", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
final String code = codeText.getText().toString();
if (!TextUtils.isEmpty(code)) {
firebaseFirestore.collection("Games Codes").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (DocumentSnapshot documentSnapshot : task.getResult()) {
if (documentSnapshot.exists()) {
final String gameID = documentSnapshot.getString("id");
firebaseFirestore.collection("Users").document(gameID).get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
@Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
String playingWith = documentSnapshot.getString("playing with");
if (gameID.equals(code)) {
Intent gameIntent = new Intent(GameChooserActivity.this, GameActivity.class);
gameIntent.putExtra("game_user_username", playingWith);
startActivity(gameIntent);
}
}
});
}
}
}
}
});
}
}
});
joinGameDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog joinGameDialog = joinGameDialogBuilder.create();
joinGameDialog.show();
}
});
请帮忙吗？ ：）