首页
学习
活动
专区
工具
TVP
发布
社区首页 >问答首页 >android get real path by Uri.getPath()

android get real path by Uri.getPath()
EN

Stack Overflow用户
提问于 2010-05-07 22:27:14
回答 4查看 233.5K关注 0票数 116

我正在尝试从画廊获取图像。

代码语言:javascript
复制
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select picture"), resultCode );

从该活动返回后,我有一个数据,其中包含Uri。看起来是这样的:

代码语言:javascript
复制
content://media/external/images/1

如何将此路径转换为真实路径(就像‘/sdcard/image.png’一样)?

谢谢

EN

回答 4

Stack Overflow用户

回答已采纳

发布于 2010-05-08 02:11:04

你真的需要一条物理路径吗?

例如,ImageView.setImageURI()ContentResolver.openInputStream()允许您在不知道实际路径的情况下访问文件的内容。

票数 57
EN

Stack Overflow用户

发布于 2012-04-03 16:44:23

这就是我要做的:

代码语言:javascript
复制
Uri selectedImageURI = data.getData();
imageFile = new File(getRealPathFromURI(selectedImageURI));

和:

代码语言:javascript
复制
private String getRealPathFromURI(Uri contentURI) {
    String result;
    Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
    if (cursor == null) { // Source is Dropbox or other similar local file path
        result = contentURI.getPath();
    } else { 
        cursor.moveToFirst(); 
        int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA); 
        result = cursor.getString(idx);
        cursor.close();
    }
    return result;
}

注意:managedQuery()方法已被弃用,所以我没有使用它。

最后一次编辑:改进。我们应该关闭光标!!

票数 203
EN

Stack Overflow用户

发布于 2016-07-11 18:10:08

Hii这里是我的完整代码,从相机或相机拍摄图像

//我的变量声明

代码语言:javascript
复制
protected static final int CAMERA_REQUEST = 0;
    protected static final int GALLERY_REQUEST = 1;
    Bitmap bitmap;
    Uri uri;
    Intent picIntent = null;

//Onclick

代码语言:javascript
复制
if (v.getId()==R.id.image_id){
            startDilog();
        }

//方法体

代码语言:javascript
复制
private void startDilog() {
    AlertDialog.Builder myAlertDilog = new AlertDialog.Builder(yourActivity.this);
    myAlertDilog.setTitle("Upload picture option..");
    myAlertDilog.setMessage("Where to upload picture????");
    myAlertDilog.setPositiveButton("Gallery", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            picIntent = new Intent(Intent.ACTION_GET_CONTENT,null);
            picIntent.setType("image/*");
            picIntent.putExtra("return_data",true);
            startActivityForResult(picIntent,GALLERY_REQUEST);
        }
    });
    myAlertDilog.setNegativeButton("Camera", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            picIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(picIntent,CAMERA_REQUEST);
        }
    });
    myAlertDilog.show();
}

//和其他事情

代码语言:javascript
复制
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode==GALLERY_REQUEST){
        if (resultCode==RESULT_OK){
            if (data!=null) {
                uri = data.getData();
                BitmapFactory.Options options = new BitmapFactory.Options();
                options.inJustDecodeBounds = true;
                try {
                    BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);
                    options.inSampleSize = calculateInSampleSize(options, 100, 100);
                    options.inJustDecodeBounds = false;
                    Bitmap image = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri), null, options);
                    imageofpic.setImageBitmap(image);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            }else {
                Toast.makeText(getApplicationContext(), "Cancelled",
                        Toast.LENGTH_SHORT).show();
            }
        }else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(getApplicationContext(), "Cancelled",
                    Toast.LENGTH_SHORT).show();
        }
    }else if (requestCode == CAMERA_REQUEST) {
        if (resultCode == RESULT_OK) {
            if (data.hasExtra("data")) {
                bitmap = (Bitmap) data.getExtras().get("data");
                uri = getImageUri(YourActivity.this,bitmap);
                File finalFile = new File(getRealPathFromUri(uri));
                imageofpic.setImageBitmap(bitmap);
            } else if (data.getExtras() == null) {

                Toast.makeText(getApplicationContext(),
                        "No extras to retrieve!", Toast.LENGTH_SHORT)
                        .show();

                BitmapDrawable thumbnail = new BitmapDrawable(
                        getResources(), data.getData().getPath());
                pet_pic.setImageDrawable(thumbnail);

            }

        } else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(getApplicationContext(), "Cancelled",
                    Toast.LENGTH_SHORT).show();
        }
    }
}

private String getRealPathFromUri(Uri tempUri) {
    Cursor cursor = null;
    try {
        String[] proj = { MediaStore.Images.Media.DATA };
        cursor = this.getContentResolver().query(tempUri,  proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
}
public static int calculateInSampleSize(
        BitmapFactory.Options options, int reqWidth, int reqHeight) {
    // Raw height and width of image
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {

        final int halfHeight = height / 2;
        final int halfWidth = width / 2;

        // Calculate the largest inSampleSize value that is a power of 2 and keeps both
        // height and width larger than the requested height and width.
        while ((halfHeight / inSampleSize) > reqHeight
                && (halfWidth / inSampleSize) > reqWidth) {
            inSampleSize *= 2;
        }
    }
    return inSampleSize;
}

private Uri getImageUri(YourActivity youractivity, Bitmap bitmap) {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
    String path = MediaStore.Images.Media.insertImage(youractivity.getContentResolver(), bitmap, "Title", null);
    return Uri.parse(path);
}
票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/2789276

复制
相关文章

相似问题

领券
问题归档专栏文章快讯文章归档关键词归档开发者手册归档开发者手册 Section 归档