我正在创建一个聊天应用程序。用户可以更改其信息。创建新帐户后，他们必须创建自己的个人资料。个人档案活动会一次又一次地重新启动。我可以解决它还是Android问题
我已经在here尝试了一切！
settingsActivity.java：
IndexError: list index out of range
没有错误。但是我可以通过使用ADB卸载它来停止它
编辑：在我在Firebase中手动编辑它然后从主活动中打开该活动后，它可以正常工作。
Edit2： registerActivity.java
package com.satyamedh.chitchatmessenger;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.net.Uri;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.squareup.picasso.Picasso;
import com.theartofdev.edmodo.cropper.CropImage;
import com.theartofdev.edmodo.cropper.CropImageView;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Objects;
import de.hdodenhof.circleimageview.CircleImageView;
public class SettingsActivity extends AppCompatActivity {
private Button Updatebutton;
private EditText Username, Status;
private CircleImageView profileImage;
private String currentUID;
private DatabaseReference rootref;
private StorageReference ProfileImagesRef;
private String downloadUrl;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE)
{
final CropImage.ActivityResult result = CropImage.getActivityResult(data);
if(resultCode == RESULT_OK)
{
Uri resultUri = result.getUri();
final StorageReference ref = ProfileImagesRef.child(currentUID + ".jpg");
ref.putFile(resultUri)
.addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
@Override
public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
ref.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri)
{
Toast.makeText(SettingsActivity.this, uri.toString(), Toast.LENGTH_SHORT).show();
downloadUrl = uri.toString();
rootref.child("Users").child(currentUID).child("image")
.setValue(downloadUrl)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task)
{
if(task.isSuccessful())
{
Toast.makeText(SettingsActivity.this, "Profile Image Uploaded Successfully...", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(SettingsActivity.this, "Some error has occurred, please try again later...", Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
});
}
}
}
private void getUserInfo()
{
rootref.child("Users").child(currentUID)
.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String oldImage;
if(dataSnapshot.hasChild("name") && (dataSnapshot.hasChild("status"))) {
String oldUsername = dataSnapshot.child("name").getValue().toString();
String oldStatus = dataSnapshot.child("status").getValue().toString();
Username.setText(oldUsername);
Status.setText(oldStatus);
}
if (dataSnapshot.hasChild("image"))
{
oldImage = dataSnapshot.child("image").getValue().toString();
Picasso.get().load(oldImage).placeholder(R.drawable.profile_image).into(profileImage);
}
Toast.makeText(SettingsActivity.this, "Please update your profile", Toast.LENGTH_SHORT).show();
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
private void updateSettings()
{
String setUserName = Username.getText().toString();
String setStatus = Status.getText().toString();
if (TextUtils.isEmpty(setUserName))
{
Toast.makeText(this, "Please enter Username to continue", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(setStatus))
{
Toast.makeText(this, "Please enter Status to continue", Toast.LENGTH_SHORT).show();
}
else
{
HashMap<String, String> profileMap = new HashMap<>();
profileMap.put("uid", currentUID);
profileMap.put("name", setUserName);
profileMap.put("status", setStatus);
rootref.child("Users").child(currentUID).setValue(profileMap)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful())
{
Toast.makeText(SettingsActivity.this, "Profile updated successfully", Toast.LENGTH_SHORT).show();
askUserToUseApp();
}
else
{
String messegess = task.getException().toString();
Toast.makeText(SettingsActivity.this, "Error : " + messegess, Toast.LENGTH_SHORT).show();
}
}
});
}
}
@Override
protected void onStart() {
super.onStart();
FirebaseAuth mAuth = FirebaseAuth.getInstance();
currentUID = Objects.requireNonNull(mAuth.getCurrentUser()).getUid();
rootref = FirebaseDatabase.getInstance().getReference();
ProfileImagesRef = FirebaseStorage.getInstance().getReference().child("Profile images");
initializeFields();
Updatebutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
updateSettings();
}
});
getUserInfo();
profileImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.start(SettingsActivity.this);
}
});
updateUserStatus("online");
}
private void initializeFields()
{
Updatebutton = findViewById(R.id.update_settings);
Username = findViewById(R.id.set_user_name);
Status = findViewById(R.id.set_status);
profileImage = findViewById(R.id.set_profile_image);
}
private void askUserToUseApp() {
Intent loginIntent = new Intent(SettingsActivity.this, MainActivity.class);
loginIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(loginIntent);
finish();
}
@Override
protected void onStop()
{
super.onStop();
updateUserStatus("offline");
}
@Override
protected void onDestroy()
{
super.onDestroy();
updateUserStatus("offline");
}
private void updateUserStatus(String state)
{
Calendar calForDate = Calendar.getInstance();
@SuppressLint("SimpleDateFormat") SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd MMM, yyyy");
String currentDate = simpleDateFormat.format(calForDate.getTime());
Calendar calForTime = Calendar.getInstance();
@SuppressLint("SimpleDateFormat") SimpleDateFormat simpleTimeFormat = new SimpleDateFormat("hh:mm:ss a");
String currentTime = simpleTimeFormat.format(calForTime.getTime());
HashMap<String, Object> onlineState = new HashMap<>();
onlineState.put("time", currentTime);
onlineState.put("date", currentDate);
onlineState.put("state", state);
rootref.child("Users").child(currentUID).child("userState")
.updateChildren(onlineState);
}
}
答案 0 :(得分：0)
可能不是相关答案，但是无论何时使用任何Firebase或Firestore 事件尝试传递“ this（“活动上下文”）“作为第一个参数，它将管理 活动生命周期，当您的应用程序在后台运行时，它将删除您的侦听器。