当用户从图库上传图像并在textView中显示时，如何获取图像名称

Question

• 我正在尝试检索用户在库中选择的图像的实际图像名称(例如IMG_2020(
• 我尝试过使用getAbsolutePath((和getName((，但这两个方法显示的是类似"image$3A75"的内容，而不是实际的图像文件名

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

请帮忙吗？

这是我的onActivityResult((方法

• fileName是我要放置imageName的文本视图
• bitMap对象还没有使用，因为我正在学习在线教程，并且我正在复制一半，我想它将在教程的后面使用

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

类似于：

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==nullnncould not query content resolver fornn" + 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() oknn" + path
+ "nnDISPLAY_NAME: " + displayName
+ "nDATA: " + data
+ "nSIZE: " + size
, Toast.LENGTH_LONG).show();
cursor.close();             

DATA在Android Q+上不可用。