Android – 如何使用Intent数据获取图像

这里Intent返回如此Intent {act = com.htc.HTCAlbum.action.ITEM_PICKER_FROM_COLLECTIONS dat = content：// media / external / images / media / 9 typ = image / jpeg(has extras)}

在代码中

位图缩略图=(位图)data.getExtras().get(“data”);
这里(位图)data.getExtras().get(“data”)
这部分返回null.

如何在这里获取位图请任何人帮助我.

码：

cam_images_btn.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {

             Intent cam_ImagesIntent = new Intent(Intent.ACTION_GET_CONTENT);
             cam_ImagesIntent.setType("image/*");
             startActivityForResult(cam_ImagesIntent, CAMERA_IMAGES_REQUEST); 
        }       
    }); 

    if(requestCode == CAMERA_IMAGES_REQUEST && resultCode==Activity.RESULT_OK)
    {
        System.out.println("data(CAMERA_IMAGES_REQUEST):"+data);
        if(data != null)
        {           
            Bitmap thumbnail = (Bitmap) data.getExtras().get("data"); 
            System.out.println("Bitmap(CAMERA_IMAGES_REQUEST):"+thumbnail);
            System.out.println("cap_image(CAMERA_IMAGES_REQUEST):"+cap_image);
            cap_image.setImageBitmap(thumbnail); 
        }
        else
        {
            System.out.println("SDCard have no images");
            Toast.makeText(camera.this, "SDCard have no images", Toast.LENGTH_SHORT);        
        }
    }

谢谢

if(data != null)
    {           
        Uri selectedImageUri = data.getData();
        filestring = selectedImageUri.getPath();

      Bitmap thumbnail = BitmapFactory.decodeFile(filestring, options2);

        System.out.println("Bitmap(CAMERA_IMAGES_REQUEST):"+thumbnail);
        System.out.println("cap_image(CAMERA_IMAGES_REQUEST):"+cap_image);
        cap_image.setImageBitmap(thumbnail); 
    }

这应该工作.

编辑：
此外,如果您想要“缩略图”,请执行以下操作：

Bitmap bitmap = MediaStore.Images.Thumbnails.getThumbnail(
                    getContentResolver(), selectedImageUriId,
                    MediaStore.Images.Thumbnails.MICRO_KIND,
                    (BitmapFactory.Options) null);