我需要从fireabse调用数据 [英] I need to call data from fireabse
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问题描述
我没有收到错误，但是我想打印用户在上面的活动中选择的值，并且图像确实成功显示在firebase存储器中，但不会在图像视图中打印.我该如何解决.这是我的代码
I am not getting an error but I want to print the value that the user chooses inside the activity above and the image does successfully show up in the firebase storage but it just won't print in the image view. How do I resolve this. Here is my code
package tech.ahawebsolutions.ahachatsandcalling;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.android.material.bottomnavigation.BottomNavigationView;
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.io.InputStream;
import java.util.HashMap;
public class SettingsActivity extends AppCompatActivity {
private Button UpdateAccountSettings, logoutbutton;
private EditText userName, userStatus;
private ImageView userProfileImage, userProfileImage1;
private String currentUserID;
private FirebaseAuth mAuth;
private DatabaseReference RootRef;
private StorageReference userProfileImagesRef;
private static final int GalleryPick = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
logoutbutton = (Button) findViewById(R.id.logoutbutton);
mAuth = FirebaseAuth.getInstance();
currentUserID = mAuth.getCurrentUser().getUid();
RootRef = FirebaseDatabase.getInstance().getReference();
userProfileImagesRef = FirebaseStorage.getInstance().getReference().child("Profile Images");
userProfileImage = (ImageView) findViewById(R.id.set_profile_image);
userProfileImage1 = (ImageView) findViewById(R.id.set_profile_image1);
InitializeFields();
userName.setVisibility(View.INVISIBLE);
UpdateAccountSettings.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view)
{
UpdateSettings();
}
});
RetrieveUserInfo();
logoutbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mAuth.signOut();
startActivity(new Intent(getApplicationContext(), LoginActivity.class));
}
});
userProfileImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view)
{
Intent galleryIntent = new Intent();
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, GalleryPick);
}
});
}
private void UpdateSettings()
{
String setUserName = userName.getText().toString();
String setUserStatus = userStatus.getText().toString();
if (TextUtils.isEmpty(setUserName))
{
Toast.makeText(this, "Please enter username", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(setUserStatus))
{
Toast.makeText(this, "Please enter your status", Toast.LENGTH_SHORT).show();
}
else
{
HashMap<String, String> profileMap = new HashMap<>();
profileMap.put("uid", currentUserID);
profileMap.put("name", setUserName);
profileMap.put("status", setUserStatus);
RootRef.child("Users").child(currentUserID).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();
SendUserToMainActivity();
}
else
{
String message = task.getException().toString();
Toast.makeText(SettingsActivity.this, "Error :" + message, Toast.LENGTH_SHORT).show();
}
}
});
}
}
private void InitializeFields()
{
UpdateAccountSettings = (Button) findViewById(R.id.update_settings_button);
userName = (EditText) findViewById(R.id.set_user_name);
userStatus = (EditText) findViewById(R.id.set_profile_status);
userProfileImage = (ImageView) findViewById(R.id.set_profile_image);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode==GalleryPick && resultCode==RESULT_OK && data!=null)
{
Uri ImageUri = data.getData();
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1, 1)
.start(this);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE)
{
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK)
{
Uri resultUri = result.getUri();
StorageReference filePath = userProfileImagesRef.child(currentUserID + ".jpg");
filePath.putFile(resultUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
@Override
public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task)
{
if (task.isSuccessful())
{
Toast.makeText(SettingsActivity.this, "Profile Image uploaded Successfully...", Toast.LENGTH_SHORT).show();
final String downloaedUrl = task.getResult().getStorage().getDownloadUrl().toString();
RootRef.child("Users").child(currentUserID).child("image")
.setValue(downloaedUrl)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task)
{
if (task.isSuccessful())
{
Toast.makeText(SettingsActivity.this, "Image save in Database, Successfully...", Toast.LENGTH_SHORT).show();
Picasso.get().load(downloaedUrl).into(userProfileImage);
}
else
{
String message = task.getException().toString();
Toast.makeText(SettingsActivity.this, "Error: " + message, Toast.LENGTH_SHORT).show();
}
}
});
}
else
{
String message = task.getException().toString();
Toast.makeText(SettingsActivity.this, "Error: " + message, Toast.LENGTH_SHORT).show();
}
}
});
}
}
}
private void RetrieveUserInfo()
{
RootRef.child("Users").child(currentUserID)
.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot)
{
if ((dataSnapshot.exists()) && (dataSnapshot.hasChild("name") && (dataSnapshot.hasChild("image"))))
{
String retrieveUserName = dataSnapshot.child("name").getValue().toString();
String retrievesStatus = dataSnapshot.child("status").getValue().toString();
String retrieveProfileImage = dataSnapshot.child("image").getValue().toString();
userName.setText(retrieveUserName);
userStatus.setText(retrievesStatus);
Picasso.get().load(retrieveProfileImage).into(userProfileImage);
}
else if ((dataSnapshot.exists()) && (dataSnapshot.hasChild("name")))
{
String retrieveUserName = dataSnapshot.child("name").getValue().toString();
String retrievesStatus = dataSnapshot.child("status").getValue().toString();
userName.setText(retrieveUserName);
userStatus.setText(retrievesStatus);
}
else
{
userName.setVisibility(View.VISIBLE);
Toast.makeText(SettingsActivity.this, "Please set & update your profile information...", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
private void SendUserToMainActivity() {
Intent mainintent = new Intent(SettingsActivity.this, MainActivity.class);
mainintent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainintent);
finish();
}
}预期结果将是用户选择的图像，该图像存储在firebase中，并被调回并打印到名为userProfileImage的图像视图中.谢谢，如果您能提供满意的解决方案.
The expected outcome would be the image the user selects and that is stored in firebase become called back and printed into the image view called userProfileImage. Thank you and if you can offer solutions that would be appreciated.
推荐答案
findViewById(R.id.your_View_id)丢失，请尝试使用视图/数据绑定来避免这些问题
findViewById(R.id.your_View_id) that was missing try to use view/data binding to avoid these problems
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