java - 在我的应用程序中，我可以进入图库，但在选择图像后，它不会覆盖 "OnActivityResult"方法

Question

我正在尝试更改我的应用程序中的个人资料图片和封面图片。我的代码中一切都很好，除了我的封面和个人资料图片没有改变。

这是我的代码文件附件。

在我的应用程序中，我可以进入图库，但在选择图像后，它不会使用“OnActivityResult”覆盖方法。虽然它停留在 ProfileFragment Activity 上，但不会转到 OnActivityResult 方法。在 ProfileFragment 中，它永远不会转到“OnActivityResult”方法。 RESULT_OK 始终为 -1。

这是我的 ProfileActivity.java

public class ProfileActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
    FirebaseAuth firebaseAuth;
    private TextView welcomeUserTv;
    ActionBar actionBar;

    ExpandableListAdapter expandableListAdapter;
    ExpandableListView expandableListView;
     List<MenuModel> headerList = new ArrayList<>();
     HashMap<MenuModel, List<MenuModel>> childList = new HashMap<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_profile);

        Toolbar mtoolbar_3p = findViewById(R.id.toolbar_3p);
        setSupportActionBar(mtoolbar_3p);

        expandableListView = findViewById(R.id.expNav_3p);

        DrawerLayout drawer_3p = findViewById(R.id.drawer_layout_3p);
        ActionBarDrawerToggle toggle_3p = new ActionBarDrawerToggle(
                this, drawer_3p, mtoolbar_3p, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        if (drawer_3p != null) {
            drawer_3p.addDrawerListener(toggle_3p);
        }
        toggle_3p.syncState();

        NavigationView navigationView = findViewById(R.id.navView_3p);
        if (navigationView != null) {
            navigationView.setNavigationItemSelectedListener(this);
        }

        firebaseAuth = FirebaseAuth.getInstance();
        checkUserStatus();

        //Bottom Navigation
        BottomNavigationView bottomNavigationView = findViewById(R.id.bottom_nav);
        bottomNavigationView.setOnNavigationItemSelectedListener(selectedListener);
        //Home fragment transaction, Default on Startup
        FirebaseUser user = firebaseAuth.getCurrentUser();

        ProfileFragment profileFragment = new ProfileFragment();
        FragmentTransaction pft1 = getSupportFragmentManager().beginTransaction();
        pft1.replace(R.id.content_frameLayout_inProfile, profileFragment, "");
        pft1.commit();
    }

    private BottomNavigationView.OnNavigationItemSelectedListener selectedListener = new BottomNavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            //FirebaseUser user = firebaseAuth.getCurrentUser();
            switch(item.getItemId()) {
                case (R.id.bottom_home):
                    //Home Fragment Transaction
                    //actionBar.setTitle("Home");
                    /*final View addView = getLayoutInflater().inflate(R.layout.nav_header_profile, null);
                    //set up for model selection
                    TextView modelTextview = addView.findViewById(R.id.welcomeUser);
                    modelTextview.setText(user.getEmail());*/
                    HomeFragment homeFragment = new HomeFragment();
                    FragmentTransaction hft1 = getSupportFragmentManager().beginTransaction();
                    hft1.replace(R.id.content_frameLayout_inProfile, homeFragment, "");
                    hft1.commit();
                    return true;
                case (R.id.bottom_profile):
                    //Profile Fragment Transaction
                    //actionBar.setTitle("Profile");
                    ProfileFragment profileFragment = new ProfileFragment();
                    FragmentTransaction pft1 = getSupportFragmentManager().beginTransaction();
                    pft1.replace(R.id.content_frameLayout_inProfile, profileFragment, "");
                    pft1.commit();
                    return true;
                case (R.id.bottom_mylist):
                    //MyList Fragment transaction
                    //actionBar.setTitle("My List");
                    MyListFragment mylistFragment = new MyListFragment();
                    FragmentTransaction mlft1 = getSupportFragmentManager().beginTransaction();
                    mlft1.replace(R.id.content_frameLayout_inProfile, mylistFragment, "");
                    mlft1.commit();
                    return true;
            }
            return false;
        }
    };

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_logout,menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        if(item.getItemId() == R.id.action_logout) {
            Toast.makeText(this, "You've been logged out", Toast.LENGTH_SHORT).show();
            firebaseAuth.signOut();
            checkUserStatus();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private void checkUserStatus() {
        FirebaseUser user = firebaseAuth.getCurrentUser();
        if(user != null) {
            //mProfileTv.setText(user.getEmail());
            //Toast.makeText(this, "Your Profile", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(this, "Not Your Profile", Toast.LENGTH_SHORT).show();
            startActivity(new Intent(ProfileActivity.this, MainActivity.class));
            finish();
        }
    }

    @Override
    protected void onStart() {
        checkUserStatus();
        super.onStart();
    }

    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        DrawerLayout drawer = findViewById(R.id.drawer_layout_3p);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

}

这是我的 ProfileFragment.java 代码

public class ProfileFragment extends Fragment {
    //Firebase auth
    FirebaseAuth firebaseAuth;
    FirebaseUser user;
    FirebaseDatabase firebaseDatabase;
    DatabaseReference databaseReference;
    //Firebase storage
    StorageReference storageReference;
    //path where images of user profile and cover will be stored
    String storagePath = "Users_Profile_Cover_Imgs/";

    //Views from xml
    ImageView mavatarTv, mcoverPic;
    TextView mnameTv, memailTv, mphoneTv;
    FloatingActionButton mfab;

    //Progress Dialog
    ProgressDialog pd;

    //Permissions constant
    private static final int CAMERA_REQUEST_CODE = 100;
    private static final int STORAGE_REQUEST_CODE = 200;
    private static final int IMAGE_PICK_GALLERY_CODE = 300;
    private static final int IMAGE_PICK_CAMERA_CODE = 400;

    //Arrays of permission to be required
    String cameraPermission[];
    String storagePermission[];

    //uri of picked image
    Uri image_uri;

    String profileOrCoverPhoto;

    public ProfileFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_profile, container, false);
        firebaseAuth = FirebaseAuth.getInstance();
        user = firebaseAuth.getCurrentUser();
        firebaseDatabase = FirebaseDatabase.getInstance();
        databaseReference = firebaseDatabase.getReference("Users");
        storageReference = getInstance().getReference();

        //init arrays of permission
        cameraPermission = new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
        storagePermission = new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE};
        //init views
        mavatarTv = view.findViewById(R.id.avatarTv);
        mcoverPic = view.findViewById(R.id.coverPic);
        memailTv = view.findViewById(R.id.emailTv);
        mphoneTv = view.findViewById(R.id.phoneTv);
        mnameTv = view.findViewById(R.id.nameTv);
        mfab = view.findViewById(R.id.fab);

        //init progress dialog
        pd = new ProgressDialog(getActivity());

        Query query = databaseReference.orderByChild("email").equalTo(user.getEmail());
        query.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                //check until required data get
                for (DataSnapshot ds : dataSnapshot.getChildren()) {
                    String name = ""+ ds.child("name").getValue();
                    String email = ""+ ds.child("email").getValue();
                    String phone = ""+ ds.child("phone").getValue();
                    String image = ""+ ds.child("image").getValue();
                    String cover = ""+ ds.child("cover").getValue();
                    //set data
                    mnameTv.setText(name);
                    memailTv.setText(email);
                    mphoneTv.setText(phone);
                    try {
                        //If image is received then
                        Picasso.get().load(image).into(mavatarTv);
                    } catch (Exception e) {
                        Picasso.get().load(R.drawable.ic_default_img_white).into(mavatarTv);
                    }
                    try {
                        //If image is received then
                        Picasso.get().load(cover).into(mcoverPic);
                    } catch (Exception e) {
                    }
                }
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

        //Fab button click
        mfab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showEditProfileDialog();
            }
        });


        return view;

    }

    private boolean checkStoragePermission() {
        //Check if storage permission is enabled or not
        //return true if enabled else false
        boolean result = ContextCompat.checkSelfPermission(getActivity(),Manifest.permission.WRITE_EXTERNAL_STORAGE)
                == (PackageManager.PERMISSION_GRANTED);
    return result;
    }

    private void requestStoragePermission() {
        //request runtime storage permission
        requestPermissions(storagePermission, STORAGE_REQUEST_CODE);
    }

    private boolean checkCameraPermission() {
        //Check if storage permission is enabled or not
        //return true if enabled else false
        boolean result1 = ContextCompat.checkSelfPermission(getActivity(),Manifest.permission.CAMERA)
                == (PackageManager.PERMISSION_GRANTED);
        boolean result2 = ContextCompat.checkSelfPermission(getActivity(),Manifest.permission.WRITE_EXTERNAL_STORAGE)
                == (PackageManager.PERMISSION_GRANTED);
        return result1 && result2;
    }

    private void requestCameraPermission() {
        //request runtime storage permission
        requestPermissions(cameraPermission, CAMERA_REQUEST_CODE);
    }

    private void showEditProfileDialog() {
        //Show Dialog containing options: 1.Edit ProfilePic, 2. Edit cover, 3. Edit name, 4. Edit Phone

        //Options to show in dialog
        String[] options = {"Edit Profile Picture", "Edit Cover Picture", "Edit Name", "Edit Phone Number"};
        //alert dialog
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        //set title
        builder.setTitle("Choose Action");
        //set items to dialog
        builder.setItems(options, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                if(which == 0) {
                    //Edit Profile pic
                    pd.setMessage("Updating Profile picture");
                    profileOrCoverPhoto = "image"; //i.e, changing profile pic, make sure to assign same value
                    showImagePicDialog();
                }
                else if (which == 1) {
                    //Edit cover pic
                    pd.setMessage("Updating Cover Picture");
                    profileOrCoverPhoto = "cover"; //i.e, changing profile pic, make sure to assign same value
                    showImagePicDialog();
                }
                else if (which == 2) {
                    //Edit name pic
                    pd.setMessage("Updating Name");
                    showNamePhoneUpdateDialog("name");
                }
                else if (which == 3) {
                    //Edit phone pic
                    pd.setMessage("Updating Phone number ");
                    showNamePhoneUpdateDialog("phone");
                }
            }
        });
        //create n show dialog
        builder.create().show();

    }

    private void showNamePhoneUpdateDialog(final String key) {
        //
        //Custom dialog
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("Update "+key);
        //set layout of dialog
        LinearLayout linearLayout = new LinearLayout(getActivity());
        linearLayout.setOrientation(LinearLayout.VERTICAL);
        //add edit text
        final EditText editText = new EditText(getActivity());
        editText.setHint("Enter "+key);
        linearLayout.addView(editText);

        builder.setView(linearLayout);
        //Adding buttons to update
        builder.setPositiveButton("Update", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String value = editText.getText().toString().trim();
                //validate
                if (!TextUtils.isEmpty(value)) {
                    pd.show();
                    HashMap<String, Object> result = new HashMap<>();
                    result.put(key, value);
                    databaseReference.child(user.getUid()).updateChildren(result)
                            .addOnSuccessListener(new OnSuccessListener<Void>() {
                                @Override
                                public void onSuccess(Void aVoid) {
                                    pd.dismiss();
                                    Toast.makeText(getActivity(), "Updated...", Toast.LENGTH_SHORT).show();
                                }
                            })
                            .addOnFailureListener(new OnFailureListener() {
                                @Override
                                public void onFailure(@NonNull Exception e) {
                                    pd.dismiss();
                                    Toast.makeText(getActivity(), ""+e.getMessage(), Toast.LENGTH_SHORT).show();
                                }
                            });
                } else {
                    Toast.makeText(getActivity(), "Please enter "+key, Toast.LENGTH_SHORT).show();
                }
            }
        });
        //Adding buttons to cancel
        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        builder.create().show();
    }

    private void showImagePicDialog() {
        //Show dialog containing options camera and gallery to pic the image
        //Options to show in dialog
        String[] options = {"Camera", "Gallery"};
        //alert dialog
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        //set title
        builder.setTitle("Pick Image From");
        //set items to dialog
        builder.setItems(options, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                if(which == 0) {
                    //Camera clicked (Permission required)
                    if (!checkCameraPermission()) {
                        requestCameraPermission();
                    } else {
                        pickFromCamera();
                    }
                }
                else if (which == 1) {
                    //Gallery clicked (Permission required)
                    if (!checkStoragePermission()) {
                        requestStoragePermission();
                    } else {
                        pickFromGallery();
                    }
                }
            }
        });
        //create n show dialog
        builder.create().show();
    }
    //First check firebase storage rules

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        //This method called when user press allow or deny from permission request dialog
        //here we'll handle permission cases
        switch (requestCode) {
            case CAMERA_REQUEST_CODE: {
                //picking from camera, 1st check camera n storage permission allowed or not
                if (grantResults.length > 0) {
                    boolean cameraAccepted = grantResults[0] == PackageManager.PERMISSION_GRANTED;
                    boolean writeStorageAccepted = grantResults[1] == PackageManager.PERMISSION_GRANTED;
                    if (cameraAccepted && writeStorageAccepted) {
                        //Permission enabled
                        pickFromCamera();
                    }
                    else {
                        //Permission denied
                        Toast.makeText(getActivity(), "Please enable Camera & Storage permission", Toast.LENGTH_SHORT).show();
                    }
                }
            }
            break;
            case STORAGE_REQUEST_CODE: {
                //picking from gallery, 1st check storage permission allowed or not
                if (grantResults.length > 0) {
                    boolean writeStorageAccepted = grantResults[1] == PackageManager.PERMISSION_GRANTED;
                    if (writeStorageAccepted) {
                        //Permission enabled
                        Toast.makeText(getActivity(), "req code:"+requestCode, Toast.LENGTH_SHORT).show();
                        System.out.println("req code:"+requestCode);
                        pickFromGallery();
                    }
                    else {
                        //Permission denied
                        Toast.makeText(getActivity(), "Please enable Storage permission", Toast.LENGTH_SHORT).show();
                    }
                }
            }
            break;
        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if (requestCode == RESULT_OK ) {
            Toast.makeText(getActivity(), "OnActivityResult method", Toast.LENGTH_SHORT).show();

            if (requestCode == IMAGE_PICK_GALLERY_CODE) {
                //image is picked from gallery, get uri of image
                image_uri = data.getData();
                Toast.makeText(getActivity(), "Gallery Pic Selected", Toast.LENGTH_SHORT).show();
                uploadProfileCoverPhoto(image_uri);
            }
            /*if (requestCode == IMAGE_PICK_CAMERA_CODE) {
                //image is picked from gallery, get uri of image
                image_uri = data.getData();
                uploadProfileCoverPhoto(image_uri);
            }*/
        }

        super.onActivityResult(requestCode, resultCode, data);
    }

    private void uploadProfileCoverPhoto(Uri uri) {
        pd.show();

        String filePathNName = storagePath+ ""+ profileOrCoverPhoto+ ""+ user.getUid();
        StorageReference storageReference2nd = storageReference.child(filePathNName);
        storageReference2nd.putFile(uri)
                .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                    @Override
                    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                        //image is uploaded to storage, now gets its url and store in usrs database
                        Task<Uri> uriTask = taskSnapshot.getStorage().getDownloadUrl();
                        while (!uriTask.isSuccessful());
                        Uri downloadUri = uriTask.getResult();

                        //check if image is uploaded or not and url is received
                        if(uriTask.isSuccessful()) {
                            //image uploaded, so add/update url in users db
                            HashMap<String, Object> results = new HashMap<>();

                            results.put(profileOrCoverPhoto, downloadUri.toString());
                            databaseReference.child(user.getUid()).updateChildren(results)
                                    .addOnSuccessListener(new OnSuccessListener<Void>() {
                                        @Override
                                        public void onSuccess(Void aVoid) {
                                            pd.dismiss(); //image url in db of user added
                                            Toast.makeText(getActivity(), "Image Updated...", Toast.LENGTH_SHORT).show();
                                        }
                                    })
                                    .addOnFailureListener(new OnFailureListener() {
                                        @Override
                                        public void onFailure(@NonNull Exception e) {
                                            pd.dismiss();
                                            Toast.makeText(getActivity(), "Error updating image", Toast.LENGTH_SHORT).show();
                                        }
                                    });
                        } else {
                            pd.dismiss();
                            Toast.makeText(getActivity(), "Some error occurred", Toast.LENGTH_SHORT).show();
                        }
                    }
                })
                .addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        pd.dismiss();
                        Toast.makeText(getActivity(), e.getMessage(), Toast.LENGTH_SHORT).show();
                    }
                });
    }

    private void pickFromCamera() {
        //intent of picking image from device camera
        ContentValues values = new ContentValues();
        values.put(MediaStore.Images.Media.TITLE, "Temp Pic");
        values.put(MediaStore.Images.Media.DESCRIPTION, "Temp Description");

        //put image uri
        image_uri = getActivity().getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

        //Intent to start camera
        Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
        startActivityForResult(cameraIntent, IMAGE_PICK_CAMERA_CODE);
    }

    private void pickFromGallery() {
        //pick from gallery
        Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
        //Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        galleryIntent.setType("image/*");
        startActivityForResult(galleryIntent, IMAGE_PICK_GALLERY_CODE);

        Toast.makeText(getActivity(), "Gallery Image", Toast.LENGTH_SHORT).show();
        System.out.println("Hello Gallery: "+getTargetRequestCode()+" result_ok:"+RESULT_OK);

        //Intent intent = new Intent(Intent.ACTION_PICK, Media.EXTERNAL_CONTENT_URI);
        //getParent().startActivityForResult(intent, GALLERY);


    }
}

所有导入均正确。

这是我的 list 文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.shortlisted">

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".LoginActivity"></activity>
        <activity android:name=".ProfileActivity"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".RegisterActivity" />
        <activity android:name=".InfoActivity" />
        <activity
            android:name=".MainActivity"
            android:theme="@style/AppTheme.NoActionBar">

        </activity>
    </application>

</manifest>

Answer 1

尝试重写ProfileActivity中的onActivityResult方法。

首先会调用 ProfileActivity 的 onActivityResult 方法。因此，当您重写 ProfileActivity 中的方法时，它会调用 super()，而 super() 又会为相应的 fragment 提供结果。

希望对您有帮助!