E/AndroidRuntime：致命异常：我的 Android 应用中的 main
E/AndroidRuntime: FATAL EXCEPTION: main in my Android app
我使用 java 和 firebase 开发了 android 应用程序。
该应用程序就像 instagram/blog，当您触摸 post（在主页中）时，您会转发到片段，该片段应该是您触摸的特定 post 的详细信息，但是当我触摸post 我转发到该片段，查看它 2 秒（没有详细信息，只有 xml 的正文）和应用程序崩溃 with-E/AndroidRuntime：致命异常：主要错误：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.traveleisure, PID: 17959
java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object java.util.Map.get(java.lang.Object)' on a null object reference
at com.example.traveleisure.Model.Destination.fromMap(Destination.java:65)
at com.example.traveleisure.Model.ModelFirebase.onComplete(ModelFirebase.java:108)
at com.google.android.gms.tasks.zzi.run(com.google.android.gms:play-services-tasks@@18.0.1:1)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
这是 (Destination.java:65):
中的一段代码
@Entity
public class Destination {
@PrimaryKey
@NonNull
private String id;
private String titleDestination;
private String category;
private String destination;
private Long CreatedDate;
private Long UpdatedDate;
private String imageUrl;
private String userId;
private String userName;
private String userPic;
public Map<String, Object> toMap() {
HashMap<String, Object> result = new HashMap<>();
result.put("id", id);
result.put("titleDestination", titleDestination);
result.put("category", category);
result.put("destination", destination);
result.put("CreatedDate", FieldValue.serverTimestamp());
result.put("lastUpdated", FieldValue.serverTimestamp());
result.put("imageUrl", imageUrl);
result.put("userId", userId);
result.put("userName", userName);
result.put("userPic",userPic);
return result;
}
public Map<String, Object> toMapUpdateUser() {
HashMap<String, Object> result = new HashMap<>();
result.put("id", id);
result.put("titleDestination", titleDestination);
result.put("category", category);
result.put("destination", destination);
result.put("imageUrl", imageUrl);
result.put("userId", userId);
result.put("userName", userName);
result.put("userPic",userPic);
return result;
}
public void fromMap(Map<String, Object> map) {
id = (String)map.get("id"); //-----------------Line 65---------------
titleDestination = (String)map.get("titleDestination");
category = (String)map.get("category");
destination = (String)map.get("destination");
imageUrl = (String)map.get("imageUrl");
userId = (String)map.get("userId");
userName = (String)map.get("userName");
Timestamp ts = (Timestamp) map.get("CreatedDate");
Timestamp ts1 = (Timestamp) map.get("lastUpdated");
CreatedDate = ts.getSeconds();
UpdatedDate = ts1.getSeconds();
userPic= (String) map.get("userPic");
}
//--downs here all the getters and setters--
}
这是 (ModelFirebase.java:108):
中的一段代码
public class ModelFirebase {
public static FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
public static FirebaseFirestore db = FirebaseFirestore.getInstance();
FirebaseStorage storage = FirebaseStorage.getInstance();
public static int destinationsCounter=0;
public void deleteDestination(Destination destination) {
db.collection("Deleted Destinations") .document(destination.getId()).set(destination.toMap()).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Log.d("TAG", "-Destination remove Successfully-");
}
});
}
public interface GetAllDestinationsListener{
void onComplete(List<Destination> list);
}
public void addDestination(Destination destination, final Model.AddDestinationListener listener) {
db.collection("destinations")
.document(destination.getId()).set(destination.toMap()).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Log.d("TAG", "-Destination added Successfully-");
listener.onComplete();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Log.w("TAG", "-Error adding destination-", e);
listener.onComplete();
}
});
}
public void getAllDestinations(Long lastUpdated, final GetAllDestinationsListener listener) {
Timestamp ts = new Timestamp(lastUpdated, 0);
db.collection("destinations").whereGreaterThan("lastUpdated", ts)
.get()
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
List<Destination> destinationList = new LinkedList<Destination>();
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
Destination dst = new Destination();
dst.fromMap(document.getData());
destinationList.add(dst);
Log.d("TAG", document.getId() + " => " + document.getData()); }
} else {
Log.d("TAG", "Error getting documents: ", task.getException());
}
listener.onComplete(destinationList);
}
});
}
public void getDestination(String id, final Model.GetDestinationListener listener) {
db.collection("destination").document(id).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
Destination destination = null;
if (task.isSuccessful()) {
DocumentSnapshot doc = task.getResult();
if (doc!=null) {
destination = new Destination();
destination.fromMap(task.getResult().getData()); //------Line 108--
}
}
listener.onComplete(destination);
}
});
}
public void delete(Destination destination, Model.DeleteDestinationListener listener) {
db.collection("destinations").document(destination.getId()).delete().addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
listener.onComplete();
}
});
}
public interface Listener<T>{
void onComplete();
void onFail();
}
public static void registerUserAccount(final String fullName, String password, final String email,final String profilePic, final Listener<Boolean> listener) {
if (firebaseAuth.getCurrentUser() != null){
firebaseAuth.signOut();
}
if (firebaseAuth.getCurrentUser() == null &&
fullName != null && !fullName.equals("") &&
password != null && !password.equals("") &&
email != null && !email.equals("")){
Map<String,Object> data = new HashMap<>();
firebaseAuth.createUserWithEmailAndPassword(email, password).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
@Override
public void onSuccess(AuthResult authResult) {
Toast.makeText(MyApp.context, "User registered", Toast.LENGTH_SHORT).show();
data.put("id",FirebaseAuth.getInstance().getCurrentUser().getUid());
data.put("profilePic",null);
data.put("fullName", fullName);
data.put("email", email);
data.put("password", password);
db.collection("userProfileData").document(email).set(data).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Log.d("TAG", "User has created in userProfileData Collection");
User user = new User(null,fullName,email,profilePic);
setUserAppData(email);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, "Fails to create user and upload data: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
listener.onComplete();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, e.getMessage(), Toast.LENGTH_SHORT).show();
listener.onFail();
}
});
}
}
public static void uploadUserData(final String fullName, final String email){
Map<String,Object> data = new HashMap<>();
data.put("fullName", fullName);
data.put("email", email);
db.collection("userProfileData").document(email).set(data).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Toast.makeText(MyApp.context, "User has created in userProfileData Collection", Toast.LENGTH_SHORT).show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, "Fails to create user and upload data: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
public static void updateUserProfile(User user){
if(user.profilePic==null){
db.collection("userProfileData").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
if(document.getData().get("id").equals(user.id)){
if(document.getData().get("profilePic")!=null){
String url= (String) document.getData().get("profilePic");
user.profilePic=url;
}
db.collection("userProfileData")
.document(User.getInstance().email).set(user.toMap());
}
}
} else {
Log.d("TAG", "Error getting documents: ", task.getException());
}
}
});
}else{
db.collection("userProfileData")
.document(User.getInstance().email).set(user.toMap());
}
db.collection("destination").whereEqualTo("userId",user.id).get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>(){
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot doc : task.getResult()) {
Destination dst= new Destination();
dst.setCategory(doc.getData().get("category").toString());
dst.setId(doc.getData().get("id").toString());
dst.setImageUrl(doc.getData().get("imageUrl").toString());
dst.setDestination(doc.getData().get("destination").toString());
dst.setTitleDestination(doc.getData().get("titleDestination").toString());
dst.setUserId(doc.getData().get("userId").toString());
dst.setUserName(user.fullName);
if( user.profilePic!=null){
dst.setUserPic(user.profilePic);
}
Log.d("update","destination Data: "+dst.getUserPic());
Log.d("update","destination Data: "+dst.getUserName());
db.collection("destinations")
.document(dst.getId()).set(dst.toMap());
}
}
}
});
}
public static void CreateUserProfile(String email,String fullName, String password, String profilePic) {
Map<String, Object> data = new HashMap<>();
if (email != null)
data.put("email",email);
if (fullName != null)
data.put("fullName", fullName);
if (profilePic != null)
data.put("profilePic", profilePic);
if (password != null)
data.put("password", password);
Log.d("TAG","email: "+email);
Log.d("TAG","fullName: "+fullName);
Log.d("TAG","profilePic: "+profilePic);
Log.d("TAG","password: "+password); db.collection("userProfileData").document(User.getInstance().email).set(data).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
Toast.makeText(MyApp.context, "-Profile Updates Successfully- " , Toast.LENGTH_SHORT).show();
}
});
}
public static void loginUser(final String email, String password, final Listener<Boolean> listener){
Log.d("TAG", "LOGIN");
if (email != null && !email.equals("") && password != null && !password.equals("")){
if (firebaseAuth.getCurrentUser() != null) {
firebaseAuth.signOut();
}
firebaseAuth.signInWithEmailAndPassword(email, password).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
@Override
public void onSuccess(AuthResult authResult) {
Toast.makeText(MyApp.context, "Login Succeeded!", Toast.LENGTH_SHORT).show();
setUserAppData(email);
listener.onComplete();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, "Failed to login: " + e.getMessage(), Toast.LENGTH_SHORT).show();
listener.onFail();
}
});
}
else {
Toast.makeText(MyApp.context, "Please fill both data fields", Toast.LENGTH_SHORT).show();
}
}
public static void setUserAppData(String email) {
db.collection("userProfileData").document(email).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful()){
User.getInstance().profilePic=(String) task.getResult().get("profilePic");
User.getInstance().fullName = (String) task.getResult().get("fullName");
User.getInstance().password = (String) task.getResult().get("password");
User.getInstance().email = email;
User.getInstance().id = firebaseAuth.getUid();
}
}
});
}
public static void signOut(){
FirebaseAuth mAuth = FirebaseAuth.getInstance();
mAuth.signOut();
}
public static void getImageFromFireBase(String userId){ db.collection("userProfileData").whereEqualTo("id",userId).get().addOnCompleteListener((OnCompleteListener<QuerySnapshot>) task -> {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
Log.d("TAG", "test" + document.getId() + " => " + document.getData().get("profilePic"));
User.getInstance().FBpic=(String) document.getData().get("profilePic");
}
} else {
Log.d("TAG", "Error getting documents: ", task.getException());
}
});
}
public void uploadImage(Bitmap imageBmp, String name, Model.UploadImageListener listener){
final StorageReference imagesRef = storage.getReference().child("images").child(name);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageBmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] data = baos.toByteArray();
UploadTask uploadTask = imagesRef.putBytes(data);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception exception) {
listener.onComplete(null);
}
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
imagesRef.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Uri downloadUrl = uri;
listener.onComplete(downloadUrl.toString());
}
});
}
});
}
}
详情xml：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.cardview.widget.CardView
android:id="@+id/cardView"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="4dp"
android:layout_marginTop="4dp"
android:layout_marginEnd="4dp"
android:layout_marginBottom="4dp"
app:cardCornerRadius="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#D2000000">
<ImageView
android:id="@+id/details_image"
android:layout_width="0dp"
android:layout_height="275dp"
android:layout_marginStart="6dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="6dp"
android:layout_marginBottom="6dp"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/details_detailDestination"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/details_category"
android:layout_width="0dp"
android:layout_height="24dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:fontFamily="@font/thin"
android:hint="Category"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
android:textSize="18sp"
app:layout_constraintStart_toEndOf="@+id/detailsprofile_profile_im"
app:layout_constraintTop_toBottomOf="@+id/details_destinationTitle" />
<TextView
android:id="@+id/details_destinationTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="32dp"
android:fontFamily="@font/bold"
android:text="Destination Title"
android:textColor="#FFFFFF"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/detailsprofile_profile_im"
app:layout_constraintTop_toBottomOf="@+id/details_nickname"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/details_nickname"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginTop="24dp"
android:fontFamily="@font/regular"
android:text="Nickname"
android:textColor="#0287F1"
android:textSize="18sp"
app:layout_constraintStart_toEndOf="@+id/detailsprofile_profile_im"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="MissingConstraints" />
<de.hdodenhof.circleimageview.CircleImageView
android:id="@+id/detailsprofile_profile_im"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:src="@drawable/ic_round_person_grey"
app:civ_border_color="#FF000000"
app:civ_border_width="2dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/details_detailDestination"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="44dp"
android:layout_marginEnd="32dp"
android:background="@drawable/style_destinationdetails"
android:fontFamily="@font/thin"
android:paddingLeft="6sp"
android:paddingTop="2sp"
android:paddingRight="6sp"
android:paddingBottom="2sp"
android:text="Destination"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
android:textSize="16sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/details_category" />
<ImageView
android:id="@+id/details_closeImg"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_baseline_close_24" />
<ImageView
android:id="@+id/details_deleteImg"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toStartOf="@+id/details_closeImg"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_baseline_delete_24" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
我希望有人知道可能是什么问题...我已经尝试修复它好几天了，但找不到解决方案...
提前致谢！
确保您正在查询正确的 id & task.getResult().getData() 在行号 108
之前的 ModelFirebase.java class 中不为空
public void getDestination(String id, final Model.GetDestinationListener listener) {
db.collection("destination").document(id).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
Destination destination = null;
if (task.isSuccessful()) {
DocumentSnapshot doc = task.getResult();
if (doc!=null && doc.getData()!=null) {
destination = new Destination();
destination.fromMap(task.getResult().getData());
}
}
listener.onComplete(destination);
}
});
}
我使用 java 和 firebase 开发了 android 应用程序。 该应用程序就像 instagram/blog，当您触摸 post（在主页中）时，您会转发到片段，该片段应该是您触摸的特定 post 的详细信息，但是当我触摸post 我转发到该片段，查看它 2 秒（没有详细信息，只有 xml 的正文）和应用程序崩溃 with-E/AndroidRuntime：致命异常：主要错误：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.traveleisure, PID: 17959
java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object java.util.Map.get(java.lang.Object)' on a null object reference
at com.example.traveleisure.Model.Destination.fromMap(Destination.java:65)
at com.example.traveleisure.Model.ModelFirebase.onComplete(ModelFirebase.java:108)
at com.google.android.gms.tasks.zzi.run(com.google.android.gms:play-services-tasks@@18.0.1:1)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
这是 (Destination.java:65):
中的一段代码@Entity
public class Destination {
@PrimaryKey
@NonNull
private String id;
private String titleDestination;
private String category;
private String destination;
private Long CreatedDate;
private Long UpdatedDate;
private String imageUrl;
private String userId;
private String userName;
private String userPic;
public Map<String, Object> toMap() {
HashMap<String, Object> result = new HashMap<>();
result.put("id", id);
result.put("titleDestination", titleDestination);
result.put("category", category);
result.put("destination", destination);
result.put("CreatedDate", FieldValue.serverTimestamp());
result.put("lastUpdated", FieldValue.serverTimestamp());
result.put("imageUrl", imageUrl);
result.put("userId", userId);
result.put("userName", userName);
result.put("userPic",userPic);
return result;
}
public Map<String, Object> toMapUpdateUser() {
HashMap<String, Object> result = new HashMap<>();
result.put("id", id);
result.put("titleDestination", titleDestination);
result.put("category", category);
result.put("destination", destination);
result.put("imageUrl", imageUrl);
result.put("userId", userId);
result.put("userName", userName);
result.put("userPic",userPic);
return result;
}
public void fromMap(Map<String, Object> map) {
id = (String)map.get("id"); //-----------------Line 65---------------
titleDestination = (String)map.get("titleDestination");
category = (String)map.get("category");
destination = (String)map.get("destination");
imageUrl = (String)map.get("imageUrl");
userId = (String)map.get("userId");
userName = (String)map.get("userName");
Timestamp ts = (Timestamp) map.get("CreatedDate");
Timestamp ts1 = (Timestamp) map.get("lastUpdated");
CreatedDate = ts.getSeconds();
UpdatedDate = ts1.getSeconds();
userPic= (String) map.get("userPic");
}
//--downs here all the getters and setters--
}
这是 (ModelFirebase.java:108):
中的一段代码 public class ModelFirebase {
public static FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
public static FirebaseFirestore db = FirebaseFirestore.getInstance();
FirebaseStorage storage = FirebaseStorage.getInstance();
public static int destinationsCounter=0;
public void deleteDestination(Destination destination) {
db.collection("Deleted Destinations") .document(destination.getId()).set(destination.toMap()).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Log.d("TAG", "-Destination remove Successfully-");
}
});
}
public interface GetAllDestinationsListener{
void onComplete(List<Destination> list);
}
public void addDestination(Destination destination, final Model.AddDestinationListener listener) {
db.collection("destinations")
.document(destination.getId()).set(destination.toMap()).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Log.d("TAG", "-Destination added Successfully-");
listener.onComplete();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Log.w("TAG", "-Error adding destination-", e);
listener.onComplete();
}
});
}
public void getAllDestinations(Long lastUpdated, final GetAllDestinationsListener listener) {
Timestamp ts = new Timestamp(lastUpdated, 0);
db.collection("destinations").whereGreaterThan("lastUpdated", ts)
.get()
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
List<Destination> destinationList = new LinkedList<Destination>();
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
Destination dst = new Destination();
dst.fromMap(document.getData());
destinationList.add(dst);
Log.d("TAG", document.getId() + " => " + document.getData()); }
} else {
Log.d("TAG", "Error getting documents: ", task.getException());
}
listener.onComplete(destinationList);
}
});
}
public void getDestination(String id, final Model.GetDestinationListener listener) {
db.collection("destination").document(id).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
Destination destination = null;
if (task.isSuccessful()) {
DocumentSnapshot doc = task.getResult();
if (doc!=null) {
destination = new Destination();
destination.fromMap(task.getResult().getData()); //------Line 108--
}
}
listener.onComplete(destination);
}
});
}
public void delete(Destination destination, Model.DeleteDestinationListener listener) {
db.collection("destinations").document(destination.getId()).delete().addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
listener.onComplete();
}
});
}
public interface Listener<T>{
void onComplete();
void onFail();
}
public static void registerUserAccount(final String fullName, String password, final String email,final String profilePic, final Listener<Boolean> listener) {
if (firebaseAuth.getCurrentUser() != null){
firebaseAuth.signOut();
}
if (firebaseAuth.getCurrentUser() == null &&
fullName != null && !fullName.equals("") &&
password != null && !password.equals("") &&
email != null && !email.equals("")){
Map<String,Object> data = new HashMap<>();
firebaseAuth.createUserWithEmailAndPassword(email, password).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
@Override
public void onSuccess(AuthResult authResult) {
Toast.makeText(MyApp.context, "User registered", Toast.LENGTH_SHORT).show();
data.put("id",FirebaseAuth.getInstance().getCurrentUser().getUid());
data.put("profilePic",null);
data.put("fullName", fullName);
data.put("email", email);
data.put("password", password);
db.collection("userProfileData").document(email).set(data).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Log.d("TAG", "User has created in userProfileData Collection");
User user = new User(null,fullName,email,profilePic);
setUserAppData(email);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, "Fails to create user and upload data: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
listener.onComplete();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, e.getMessage(), Toast.LENGTH_SHORT).show();
listener.onFail();
}
});
}
}
public static void uploadUserData(final String fullName, final String email){
Map<String,Object> data = new HashMap<>();
data.put("fullName", fullName);
data.put("email", email);
db.collection("userProfileData").document(email).set(data).addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
Toast.makeText(MyApp.context, "User has created in userProfileData Collection", Toast.LENGTH_SHORT).show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, "Fails to create user and upload data: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
public static void updateUserProfile(User user){
if(user.profilePic==null){
db.collection("userProfileData").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
if(document.getData().get("id").equals(user.id)){
if(document.getData().get("profilePic")!=null){
String url= (String) document.getData().get("profilePic");
user.profilePic=url;
}
db.collection("userProfileData")
.document(User.getInstance().email).set(user.toMap());
}
}
} else {
Log.d("TAG", "Error getting documents: ", task.getException());
}
}
});
}else{
db.collection("userProfileData")
.document(User.getInstance().email).set(user.toMap());
}
db.collection("destination").whereEqualTo("userId",user.id).get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>(){
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot doc : task.getResult()) {
Destination dst= new Destination();
dst.setCategory(doc.getData().get("category").toString());
dst.setId(doc.getData().get("id").toString());
dst.setImageUrl(doc.getData().get("imageUrl").toString());
dst.setDestination(doc.getData().get("destination").toString());
dst.setTitleDestination(doc.getData().get("titleDestination").toString());
dst.setUserId(doc.getData().get("userId").toString());
dst.setUserName(user.fullName);
if( user.profilePic!=null){
dst.setUserPic(user.profilePic);
}
Log.d("update","destination Data: "+dst.getUserPic());
Log.d("update","destination Data: "+dst.getUserName());
db.collection("destinations")
.document(dst.getId()).set(dst.toMap());
}
}
}
});
}
public static void CreateUserProfile(String email,String fullName, String password, String profilePic) {
Map<String, Object> data = new HashMap<>();
if (email != null)
data.put("email",email);
if (fullName != null)
data.put("fullName", fullName);
if (profilePic != null)
data.put("profilePic", profilePic);
if (password != null)
data.put("password", password);
Log.d("TAG","email: "+email);
Log.d("TAG","fullName: "+fullName);
Log.d("TAG","profilePic: "+profilePic);
Log.d("TAG","password: "+password); db.collection("userProfileData").document(User.getInstance().email).set(data).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
Toast.makeText(MyApp.context, "-Profile Updates Successfully- " , Toast.LENGTH_SHORT).show();
}
});
}
public static void loginUser(final String email, String password, final Listener<Boolean> listener){
Log.d("TAG", "LOGIN");
if (email != null && !email.equals("") && password != null && !password.equals("")){
if (firebaseAuth.getCurrentUser() != null) {
firebaseAuth.signOut();
}
firebaseAuth.signInWithEmailAndPassword(email, password).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
@Override
public void onSuccess(AuthResult authResult) {
Toast.makeText(MyApp.context, "Login Succeeded!", Toast.LENGTH_SHORT).show();
setUserAppData(email);
listener.onComplete();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MyApp.context, "Failed to login: " + e.getMessage(), Toast.LENGTH_SHORT).show();
listener.onFail();
}
});
}
else {
Toast.makeText(MyApp.context, "Please fill both data fields", Toast.LENGTH_SHORT).show();
}
}
public static void setUserAppData(String email) {
db.collection("userProfileData").document(email).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful()){
User.getInstance().profilePic=(String) task.getResult().get("profilePic");
User.getInstance().fullName = (String) task.getResult().get("fullName");
User.getInstance().password = (String) task.getResult().get("password");
User.getInstance().email = email;
User.getInstance().id = firebaseAuth.getUid();
}
}
});
}
public static void signOut(){
FirebaseAuth mAuth = FirebaseAuth.getInstance();
mAuth.signOut();
}
public static void getImageFromFireBase(String userId){ db.collection("userProfileData").whereEqualTo("id",userId).get().addOnCompleteListener((OnCompleteListener<QuerySnapshot>) task -> {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
Log.d("TAG", "test" + document.getId() + " => " + document.getData().get("profilePic"));
User.getInstance().FBpic=(String) document.getData().get("profilePic");
}
} else {
Log.d("TAG", "Error getting documents: ", task.getException());
}
});
}
public void uploadImage(Bitmap imageBmp, String name, Model.UploadImageListener listener){
final StorageReference imagesRef = storage.getReference().child("images").child(name);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageBmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] data = baos.toByteArray();
UploadTask uploadTask = imagesRef.putBytes(data);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception exception) {
listener.onComplete(null);
}
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
imagesRef.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Uri downloadUrl = uri;
listener.onComplete(downloadUrl.toString());
}
});
}
});
}
}
详情xml：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.cardview.widget.CardView
android:id="@+id/cardView"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="4dp"
android:layout_marginTop="4dp"
android:layout_marginEnd="4dp"
android:layout_marginBottom="4dp"
app:cardCornerRadius="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#D2000000">
<ImageView
android:id="@+id/details_image"
android:layout_width="0dp"
android:layout_height="275dp"
android:layout_marginStart="6dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="6dp"
android:layout_marginBottom="6dp"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/details_detailDestination"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/details_category"
android:layout_width="0dp"
android:layout_height="24dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:fontFamily="@font/thin"
android:hint="Category"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
android:textSize="18sp"
app:layout_constraintStart_toEndOf="@+id/detailsprofile_profile_im"
app:layout_constraintTop_toBottomOf="@+id/details_destinationTitle" />
<TextView
android:id="@+id/details_destinationTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="32dp"
android:fontFamily="@font/bold"
android:text="Destination Title"
android:textColor="#FFFFFF"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/detailsprofile_profile_im"
app:layout_constraintTop_toBottomOf="@+id/details_nickname"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/details_nickname"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginTop="24dp"
android:fontFamily="@font/regular"
android:text="Nickname"
android:textColor="#0287F1"
android:textSize="18sp"
app:layout_constraintStart_toEndOf="@+id/detailsprofile_profile_im"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="MissingConstraints" />
<de.hdodenhof.circleimageview.CircleImageView
android:id="@+id/detailsprofile_profile_im"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:src="@drawable/ic_round_person_grey"
app:civ_border_color="#FF000000"
app:civ_border_width="2dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/details_detailDestination"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="44dp"
android:layout_marginEnd="32dp"
android:background="@drawable/style_destinationdetails"
android:fontFamily="@font/thin"
android:paddingLeft="6sp"
android:paddingTop="2sp"
android:paddingRight="6sp"
android:paddingBottom="2sp"
android:text="Destination"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
android:textSize="16sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/details_category" />
<ImageView
android:id="@+id/details_closeImg"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_baseline_close_24" />
<ImageView
android:id="@+id/details_deleteImg"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toStartOf="@+id/details_closeImg"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_baseline_delete_24" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
我希望有人知道可能是什么问题...我已经尝试修复它好几天了，但找不到解决方案... 提前致谢！
确保您正在查询正确的 id & task.getResult().getData() 在行号 108
之前的 ModelFirebase.java class 中不为空 public void getDestination(String id, final Model.GetDestinationListener listener) {
db.collection("destination").document(id).get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
Destination destination = null;
if (task.isSuccessful()) {
DocumentSnapshot doc = task.getResult();
if (doc!=null && doc.getData()!=null) {
destination = new Destination();
destination.fromMap(task.getResult().getData());
}
}
listener.onComplete(destination);
}
});
}