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从相机（当前点击图像）或 sd 卡（已经点击或在 sd 卡图像中）拍照时，我对如何获取图像名称有点困惑。请你帮我解决如何获取图像名称。

if (requestCode == CAMERA_REQUEST) {
ImageView profImage;
Bitmap photo = (Bitmap) data.getExtras().get("data");
Bitmap scaledphoto = Bitmap.createScaledBitmap(photo, height, width,
                        true);
profImage.setImageBitmap(scaledphoto);
//How to get name here
}

现在，这里如何获取ImageName以建议将图像保存在数据库中。

或者

Imageview test=(Imageview) findViewById(R.id.testimage);
test.setImageResource(R.drawable.androidimage);

所以，我想获取图像的名称，这里的图像名称是 androidimage.SO 如何获取图像名称。

4

3 回答 3

0

Updated Code

Gallery :

    Intent photoPickerIntent = new Intent(
            Intent.ACTION_GET_CONTENT);
    photoPickerIntent.setType("image/*");
    startActivityForResult(photoPickerIntent, CAMERA_PIC_REQUEST);

onActivityResult

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == CAMERA_PIC_REQUEST) {


        Uri selectedImage = data.getData();

        String filePath = getRealPathFromURI(selectedImage);
        // used in show HD images
        BitmapFactory.Options bounds = new BitmapFactory.Options();
        // divide bitmap to 4 sample size it can be 2rest(2,4,8 etc)
        bounds.inSampleSize = 4;
        // get bitmap from bounds and file path
        Bitmap bmp = BitmapFactory.decodeFile(filePath, bounds);

        imageView.setImageBitmap(bmp);
        Uri selectedImageUri1 = data.getData();
        String path = getRealPathFromURI(selectedImageUri1);
        File file = new File(path);
        textView.setText(file.getName());

    }
}

public String getRealPathFromURI(Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    Cursor cursor = managedQuery(contentUri, proj, null, null, null);
    int column_index = cursor
            .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}
于 2013-04-25T05:24:37.747 回答
0

请使用以下代码。

public class UploadImageActivity extends Activity {
private final int CAMERA_PICTURE = 1;
private final int GALLERY_PICTURE = 2;
private ImageView userPictureImageView;
private Intent pictureActionIntent = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main1);

    userPictureImageView = (ImageView) findViewById(R.id.imageView1);
    userPictureImageView.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            startDialog();
        }

    });
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == GALLERY_PICTURE) {
        Uri uri = data.getData();
        if (uri != null) {
            // User had pick an image.
            Cursor cursor = getContentResolver().query(uri, new String[] { android.provider.MediaStore.Images.ImageColumns.DATA }, null, null, null);
            cursor.moveToFirst();
            // Link to the image
            final String imageFilePath = cursor.getString(0);
            File photos = new File(imageFilePath);
            Bitmap b = decodeFile(photos);
            b = Bitmap.createScaledBitmap(b, 150, 150, true);
            userPictureImageView.setImageBitmap(b);
            cursor.close();
        }
        else {
            Toast toast = Toast.makeText(this, "No Image is selected.", Toast.LENGTH_LONG);
            toast.show();
        }
    }
    else if (requestCode == CAMERA_PICTURE) {
        if (data.getExtras() != null) {
            // here is the image from camera
            Bitmap bitmap = (Bitmap) data.getExtras().get("data");
            userPictureImageView.setImageBitmap(bitmap);
        }
    }
}

private Bitmap decodeFile(File f) {
    try {
        // decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f), null, o);

        // Find the correct scale value. It should be the power of 2.
        final int REQUIRED_SIZE = 70;
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
                break;
            width_tmp /= 2;
            height_tmp /= 2;
            scale++;
        }

        // decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    }
    catch (FileNotFoundException e) {
    }
    return null;
}

private void startDialog() {
    AlertDialog.Builder myAlertDialog = new AlertDialog.Builder(this);
    myAlertDialog.setTitle("Upload Pictures Option");
    myAlertDialog.setMessage("How do you want to set your picture?");

    myAlertDialog.setPositiveButton("Gallery", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface arg0, int arg1) {
            pictureActionIntent = new Intent(Intent.ACTION_GET_CONTENT, null);
            pictureActionIntent.setType("image/*");
            pictureActionIntent.putExtra("return-data", true);
            startActivityForResult(pictureActionIntent, GALLERY_PICTURE);
        }
    });

    myAlertDialog.setNegativeButton("Camera", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface arg0, int arg1) {
            pictureActionIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(pictureActionIntent, CAMERA_PICTURE);
        }
    });
    myAlertDialog.show();
}
}

不要忘记在清单文件中添加相机权限。

于 2013-04-25T05:56:49.673 回答
0

您可以将 Bitmap 传递给此方法以获取 Image Uri。

public Uri getImageUri(Context inContext, Bitmap inImage) {
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
        String path = Images.Media.insertImage(inContext.getContentResolver(),
                inImage, "Title", null);
        return Uri.parse(path);
    }

最后，您可以将图像设置为图像视图

imageView.setImageUri(mUri);
于 2013-04-25T05:22:06.997 回答