用户从图库中上传图像并在 textView 中显示时如何获取图像名称？

Question

• 我正在尝试检索用户在图库中选择的图像的实际图像名称（例如 IMG_2020）。
• 我尝试使用 getAbsolutePath() 和 getName() 但这两种方法会显示类似“image$3A75”的内容，而不是实际的图像文件名。

除此之外，我还尝试使用一些我不知道它是如何工作的光标方法，但它仍然不起作用或者可能是因为我不知道如何使用它。

有什么帮助吗？

这是我的 onActivityResult() 方法

• fileName 是我要放置 imageName 的 textView
• bitMap对象还没用，因为我在网上跟着一个教程，正在复制一半，我想以后教程会用到

public class createCharity extends AppCompatActivity {

    private static final int PICK_IMAGE_REQUEST = 1;
    Button uploadButton;
    Button createCharityButton;
    TextView charityTitle;
    TextView fileName;
    TextView charityDescription;
    Uri charityImage;
    private StorageReference mStorageRef;
    private DatabaseReference mDatabaseRef;

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

        uploadButton = findViewById(R.id.uploadButton);
        charityTitle = findViewById(R.id.charityTitle);
        fileName = findViewById(R.id.fileName);
        charityDescription = findViewById(R.id.charityDescription);
        createCharityButton = findViewById(R.id.createCharityButton);

        mStorageRef = FirebaseStorage.getInstance().getReference("charityUploads");
        mDatabaseRef = FirebaseDatabase.getInstance().getReference("charityUploads");

        uploadButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openFileChooser();
            }
        });

    }

    private void openFileChooser() {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(intent, PICK_IMAGE_REQUEST);
        System.out.println("----------------------c1");
    }

    @Override
    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) {
            charityImage = data.getData();
            try {
                Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), charityImage);

                File file = new File(String.valueOf(charityImage));
                System.out.println("Image name: " + file.getName());

                fileName.setText(file.getName());

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

Answer 1

类似：

                String projection [] = {

                          MediaStore.Images.Media.DATA
                        , MediaStore.Images.Media.DISPLAY_NAME
                        , MediaStore.Images.Media.SIZE};
                Cursor cursor = getContentResolver().query(data.getData(), projection, null, null, null);

                if ( cursor==null)
                {
                    Toast.makeText(context, "cursor==null\n\ncould not query content resolver for\n\n" + path, Toast.LENGTH_LONG).show();

                    return;
                }

                cursor.moveToFirst();
                String data = cursor.getString(0);
                String displayName = cursor.getString(1);
                String size = cursor.getString(2);

                Toast.makeText(context, "getContentResolver().openInputStream() ok\n\n" + path
                            + "\n\nDISPLAY_NAME: " + displayName
                            + "\nDATA: " + data
                            + "\nSIZE: " + size
                            , Toast.LENGTH_LONG).show();
                cursor.close();             

数据在 Android Q+ 上不可用。