在SD卡中保存捕获图像android

我打电话给相机目的并尝试在SD卡中保存捕获图像，但相机意图给我空数据。我不能理解的问题是什么。我的代码如下在SD卡中保存捕获图像android

imgBtnPicture.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View v) { 

      String fileName="ashraful.jpg"; 

      String root = Environment.getExternalStorageDirectory().toString(); 
      new File(root + "/photofolder").mkdirs(); 
      File outputfile=new File(root+"/photofolder/", fileName); 
      Uri outputFileUri = Uri.fromFile(outputfile); 
      Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
      cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); 
      startActivityForResult(cameraIntent, CAMERA_REQUEST); 
     } 
    }); 


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

     if(data!=null) 
     { 
      Bitmap photo = (Bitmap) data.getExtras().get("data"); 
      Bitmap icon1=ResizeBitmap(photo,200,200); 
      imgBtnPicture.setImageBitmap(icon1); 
     } 
    } 
}

但我得到空数据？如何解决我的问题？plz帮助

来源

2013-04-24 decoder

读this的Android培训仔细岗位理出头绪。正如帖子所言，

如果您为其保存文件，Android Camera应用程序会保存一张全尺寸的照片。

所以如果你没有通过文件的Uri，你应该使用这个Uri访问图像。

来源

2013-04-24 07:35:58 Egor

private void takeNewPicture() { 

    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
    ContentValues values = new ContentValues(3); 

    values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); 
    cameraImagePath = getContentResolver().insert(
      MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); 
    takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, cameraImagePath); 
    startActivityForResult(takePictureIntent, CAMERA_REQUEST); 
} 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) { 

    String[] filePathColumn = { MediaStore.Images.Media.DATA }; 
    Uri imageFilePathUri = null; 
    if (cameraImagePath != null) { 
     Cursor imageCursor = getContentResolver().query(
      cameraImagePath, filePathColumn, null, null, null); 
    if (imageCursor != null && imageCursor.moveToFirst()) { 
     int columnIndex = imageCursor.getColumnIndex(filePathColumn[0]); 
     String filePath = imageCursor.getString(columnIndex); 
     imageCursor.close(); 
     imageFilePathUri = filePath != null ? Uri 
       .parse(filePath) : null; 
    } 

    } 


    } 
}

cameraImagePath是一个Uri对象

来源

2013-04-24 07:35:51 Blackbelt

在SD卡中保存捕获图像android

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