获取Android上的图片文件路径 [英] Get file path of image on Android

问题描述

我有一个可以拍照并上传的应用程式。上传需要照片的文件路径，但我无法获取。

这是我的代码：

  public void maakfoto（View v）{
 
 Intent cameraIntent = new Intent（android.provider.MediaStore.ACTION_IMAGE_CAPTURE）; 
 cameraIntent.putExtra（MediaStore.EXTRA_OUTPUT，mImageCaptureUri）; 
 startActivityForResult（cameraIntent，CAMERA_REQUEST）; 
 
} 
 
 protected void onActivityResult（int requestCode，int resultCode，Intent data）{
 if（requestCode == CAMERA_REQUEST& resultCode == RESULT_OK） {
 
位图照片=（位图）data.getExtras（）。get（data）; 
 imageView.setImageBitmap（photo）; 
 knop.setVisibility（Button.VISIBLE）; 
 System.out.println（mImageCaptureUri）; 
} 
} 
  

请帮助我获取文件路径。 p>

谢谢

解决方案

发布到Twitter需要图片的实际路径设备在发送请求中发送。我发现很难得到实际的路径，而且经常会得到错误的路径。

为了解决这个问题，一旦你有一个 Bitmap ，我使用它来从使用 getImageUri（）获取URI。随后，我使用 tempUri Uri实例来获取设备上的实际路径。

生产代码并自然测试。 ; - ）

  protected void onActivityResult（int requestCode，int resultCode，Intent data）{
 if（requestCode == CAMERA_REQUEST&& resultCode == RESULT_OK）{
位图照片=（位图）data.getExtras（）。get（data）; 
 imageView.setImageBitmap（photo）; 
 knop.setVisibility（Button.VISIBLE）; 
 
 
 //调用从BITMAP获取URI的方法
 Uri tempUri = getImageUri（getApplicationContext（），photo）; 
 
 //获取实际路径的方法
 File finalFile = new File（getRealPathFromURI（tempUri））; 
 
 System.out.println（mImageCaptureUri）; 
} 
} 
 
 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）; 
} 
 
 public String getRealPathFromURI（Uri uri）{
 Cursor cursor = getContentResolver（）。query（uri，null，null，null，null）; 
 cursor.moveToFirst（）; 
 int idx = cursor.getColumnIndex（MediaStore.Images.ImageColumns.DATA）; 
 return cursor.getString（idx）; 
} 
  

I have an app that can make pictures and upload them. The upload requires the file path of the photo but I can't get it.

This is my code:

public void maakfoto (View v) {

        Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
        startActivityForResult(cameraIntent, CAMERA_REQUEST);

    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
        if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {  

            Bitmap photo = (Bitmap) data.getExtras().get("data"); 
            imageView.setImageBitmap(photo);
            knop.setVisibility(Button.VISIBLE);
            System.out.println(mImageCaptureUri);
        }  
    }

Please help me to get the file path.

Thank you

解决方案

Posting to Twitter needs the image's actual path on the device to be sent in the request to post. I was finding it mighty difficult to get the actual path and more often than not I would get the wrong path.

To counter that, once you have a Bitmap, I use that to get the URI from using the getImageUri(). Subsequently, I use the tempUri Uri instance to get the actual path as it is on the device.

This is production code and naturally tested. ;-)

protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
    if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
        Bitmap photo = (Bitmap) data.getExtras().get("data"); 
        imageView.setImageBitmap(photo);
        knop.setVisibility(Button.VISIBLE);


        // CALL THIS METHOD TO GET THE URI FROM THE BITMAP
        Uri tempUri = getImageUri(getApplicationContext(), photo);

        // CALL THIS METHOD TO GET THE ACTUAL PATH
        File finalFile = new File(getRealPathFromURI(tempUri));

        System.out.println(mImageCaptureUri);
    }  
}

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);
}

public String getRealPathFromURI(Uri uri) {
    Cursor cursor = getContentResolver().query(uri, null, null, null, null); 
    cursor.moveToFirst(); 
    int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA); 
    return cursor.getString(idx); 
}

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