Разрешение пользователя на доступ к мультимедиа в студии Android ⇐ Android

[Anonymous]

creating this app in android studio using java language, it is kind of Instagram clone, for posting pictures i have this specific post activity in which i am trying to implement accessing the gallery of user to select a image but i am unable to do so... i was following a tutorial on youtube but its kind of old one so, few of the functions n all are deprecated so, i have tried many things but not able to solve my error. Also there are few functions which are deprecated such as 'continuationWithTask' for which i am not able to find alternatives

i followed this documentation on accessing user permission using media store permissions i did that too but ig im doing something wrong which i am not able to figure out

so here are my manifest permission and my code of post activity

-> manifest permission

-> java code

package com.example.lively; import androidx.activity.result.ActivityResultLauncher; import androidx.activity.result.contract.ActivityResultContracts; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.annotation.RequiresExtension; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import android.Manifest; import android.content.ContentResolver; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.ext.SdkExtensions; import android.provider.MediaStore; import android.provider.Settings; import android.webkit.MimeTypeMap; import android.widget.EditText; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.google.firebase.storage.StorageTask; import com.google.android.gms.tasks.OnCompleteListener; import com.google.firebase.auth.FirebaseAuth; import com.google.firebase.database.DatabaseReference; import com.google.firebase.database.FirebaseDatabase; import com.google.firebase.storage.FirebaseStorage; import com.google.firebase.storage.StorageReference; import java.util.HashMap; import java.util.Objects; import java.util.UUID; public class PostActivity extends AppCompatActivity { private static final String PERMISSION_READ_MEDIA = Manifest.permission.READ_MEDIA_IMAGES; Uri imageUri; String myUrl = null; StorageTask uploadTask; StorageReference storageReference; ImageView close, imageAdded; TextView post; EditText description; private ActivityResultLauncher mImage; private static final int PICK_IMAGE_REQUEST = 1; public ProgressBar progressBar = findViewById(R.id.progressBar); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_post); close = findViewById(R.id.close); imageAdded = findViewById(R.id.imageAdded); post = findViewById(R.id.post); description = findViewById(R.id.description); storageReference = FirebaseStorage.getInstance().getReference("posts"); close.setOnClickListener(v -> { startActivity(new Intent(PostActivity.this, MainActivity.class)); finish(); }); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R && SdkExtensions.getExtensionVersion(Build.VERSION_CODES.R) >= 2) { imageAdded.setOnClickListener(v -> pickImage()); } post.setOnClickListener(v -> { if (imageUri != null) { uploadImage(); } else { Toast.makeText(this, "No image selected.", Toast.LENGTH_SHORT).show(); } }); openFileChooser(); } private void requestRuntimePermission() { if (ActivityCompat.checkSelfPermission(this, PERMISSION_READ_MEDIA) == PackageManager.PERMISSION_GRANTED) { Toast.makeText(this, "Permission Granted", Toast.LENGTH_SHORT).show(); } else if (ActivityCompat.shouldShowRequestPermissionRationale(this, PERMISSION_READ_MEDIA)) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("Access Images") .setTitle("Permission Required") .setCancelable(false) .setPositiveButton("Ok", (dialog, which) -> { ActivityCompat.requestPermissions(PostActivity.this, new String[]{PERMISSION_READ_MEDIA}, PICK_IMAGE_REQUEST); dialog.dismiss(); }) .setNegativeButton("Cancel", ((dialog, which) -> dialog.dismiss())); builder.show(); } else { ActivityCompat.requestPermissions(this, new String[]{PERMISSION_READ_MEDIA}, PICK_IMAGE_REQUEST); } } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if (requestCode == PICK_IMAGE_REQUEST) { if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { Toast.makeText(this, "Permission Granted", Toast.LENGTH_SHORT).show(); } else if (!ActivityCompat.shouldShowRequestPermissionRationale(this, PERMISSION_READ_MEDIA)) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("Allow from settings") .setTitle("Permission Required") .setCancelable(false) .setNegativeButton("Cancel", ((dialog, which) -> dialog.dismiss())) .setPositiveButton("Settings", (dialog, which) -> { Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); Uri uri = Uri.fromParts("package", getPackageName(), null); intent.setData(uri); startActivity(intent); dialog.dismiss(); }); builder.show(); } else { requestRuntimePermission(); } } } private void openFileChooser() { mImage = registerForActivityResult( new ActivityResultContracts.GetContent(), o -> imageAdded.setImageURI(o) ); } protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) { imageUri = data.getData(); imageAdded.setImageURI(imageUri); } } @RequiresExtension(extension = Build.VERSION_CODES.R, version = 2) private void pickImage() { Intent intent = new Intent(MediaStore.ACTION_PICK_IMAGES); mImage.launch(String.valueOf(intent)); requestRuntimePermission(); } private String getFileExtension(Uri uri) { ContentResolver contentResolver = getContentResolver(); MimeTypeMap mime = MimeTypeMap.getSingleton(); return mime.getExtensionFromMimeType(contentResolver.getType(uri)); } private void uploadImage() { progressBar.setTag("Posting"); StorageReference fileReference = storageReference.child(UUID.randomUUID().toString() + "." + getFileExtension(imageUri)); uploadTask = fileReference.putFile(imageUri); uploadTask.continueWithTask(task -> { if (!task.isSuccessful()) { throw Objects.requireNonNull(task.getException()); } return fileReference.getDownloadUrl(); }).addOnCompleteListener((OnCompleteListener) task -> { if (task.isSuccessful()) { Uri downloadUri = task.getResult(); myUrl = downloadUri.toString(); DatabaseReference reference = FirebaseDatabase.getInstance().getReference("Posts"); String postId = reference.push().getKey(); HashMap hashMap = new HashMap(); hashMap.put("postid", postId); hashMap.put("postimage", myUrl); hashMap.put("description", description.getText().toString()); hashMap.put("publisher", Objects.requireNonNull(FirebaseAuth.getInstance().getCurrentUser()).getUid()); assert postId != null; reference.child(postId).setValue(hashMap); progressBar.clearAnimation(); startActivity(new Intent(PostActivity.this, MainActivity.class)); finish(); } else { Toast.makeText(PostActivity.this, "Failed", Toast.LENGTH_SHORT).show(); } }).addOnFailureListener(e -> Toast.makeText(PostActivity.this, " " + e.getMessage(), Toast.LENGTH_SHORT).show()); } } you can also check out my whole project in github [https://github.com/riloveCP/lively]
android version hedgehog
-> after few edits in code i came to this point

-> where my code looks like this:-

package com.example.lively; import androidx.activity.result.ActivityResultLauncher; import androidx.activity.result.contract.ActivityResultContracts; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.annotation.RequiresExtension; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import android.Manifest; import android.content.ContentResolver; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.ext.SdkExtensions; import android.provider.MediaStore; import android.provider.Settings; import android.webkit.MimeTypeMap; import android.widget.EditText; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.google.firebase.storage.StorageTask; import com.google.android.gms.tasks.OnCompleteListener; import com.google.firebase.auth.FirebaseAuth; import com.google.firebase.database.DatabaseReference; import com.google.firebase.database.FirebaseDatabase; import com.google.firebase.storage.FirebaseStorage; import com.google.firebase.storage.StorageReference; import java.util.HashMap; import java.util.Objects; import java.util.UUID; public class PostActivity extends AppCompatActivity { Uri imageUri; String myUrl = null; StorageTask uploadTask; StorageReference storageReference; ImageView close, imageAdded; TextView post; EditText description; private ActivityResultLauncher mImage; private static final int PICK_IMAGE_REQUEST = 1; public ProgressBar progressBar; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_post); progressBar = findViewById(R.id.progressBar); close = findViewById(R.id.close); imageAdded = findViewById(R.id.imageAdded); post = findViewById(R.id.post); description = findViewById(R.id.description); storageReference = FirebaseStorage.getInstance().getReference("posts"); close.setOnClickListener(v -> { startActivity(new Intent(PostActivity.this, MainActivity.class)); finish(); }); imageAdded.setOnClickListener(v -> openFileChooser()); post.setOnClickListener(v -> { if (imageUri != null) { uploadImage(); } else { Toast.makeText(this, "No image selected.", Toast.LENGTH_SHORT).show(); } }); } private void openFileChooser() { mImage = registerForActivityResult( new ActivityResultContracts.GetContent(), o -> imageAdded.setImageURI(o) ); mImage.launch("image/*"); } protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) { imageUri = data.getData(); imageAdded.setImageURI(imageUri); } } private String getFileExtension(Uri uri) { ContentResolver contentResolver = getContentResolver(); MimeTypeMap mime = MimeTypeMap.getSingleton(); return mime.getExtensionFromMimeType(contentResolver.getType(uri)); } private void uploadImage() { progressBar.setTag("Posting"); StorageReference fileReference = storageReference.child(UUID.randomUUID().toString() + "." + getFileExtension(imageUri)); uploadTask = fileReference.putFile(imageUri); uploadTask.continueWithTask(task -> { if (!task.isSuccessful()) { throw Objects.requireNonNull(task.getException()); } return fileReference.getDownloadUrl(); }).addOnCompleteListener((OnCompleteListener) task -> { if (task.isSuccessful()) { Uri downloadUri = task.getResult(); myUrl = downloadUri.toString(); DatabaseReference reference = FirebaseDatabase.getInstance().getReference("Posts"); String postId = reference.push().getKey(); HashMap hashMap = new HashMap(); hashMap.put("postid", postId); hashMap.put("postimage", myUrl); hashMap.put("description", description.getText().toString()); hashMap.put("publisher", Objects.requireNonNull(FirebaseAuth.getInstance().getCurrentUser()).getUid()); assert postId != null; reference.child(postId).setValue(hashMap); progressBar.clearAnimation(); startActivity(new Intent(PostActivity.this, MainActivity.class)); finish(); } else { Toast.makeText(PostActivity.this, "Failed", Toast.LENGTH_SHORT).show(); } }).addOnFailureListener(e -> Toast.makeText(PostActivity.this, " " + e.getMessage(), Toast.LENGTH_SHORT).show()); } } -> and the error i get:-
java.lang.IllegalStateException: LifecycleOwner com.example.lively.PostActivity@ceac9fd is attempting to register while current state is RESUMED. LifecycleOwners must call register before they are STARTED. code:- private void openFileChooser() { mImage = registerForActivityResult( new ActivityResultContracts.GetContent(), o -> imageAdded.setImageURI(o) ); mImage.launch("image/*"); }

Источник: https://stackoverflow.com/questions/780 ... oid-studio