Question

当我从图库中选择多个图像时，如何阅读/检索路径或Uri[]？

我想称之为：

Uri[] originalUri = data.getData();

但实际上我只是得到这个，只获取一个Uri：

 Uri originalUri = data.getData();

Answer 1

@RIT正如你所说，你想在andorid kitkat中获得多个图像。

我尝试下面的代码，对我来说适用于Xperia M2 4.4.4

用于开始图像选择活动

private void startImageSelection(){

        Intent intent = new Intent();
        intent.setType("image/*");
        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,"Select Picture"), PICK_IMAGES);
    }

但是用户需要长按

来选择图像

现在读取所选图像Uri使用下面代码为onActivityResult

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub

        if(requestCode==PICK_IMAGES){

            if(resultCode==RESULT_OK){
                //data.getParcelableArrayExtra(name);
                //If Single image selected then it will fetch from Gallery
                if(data.getData()!=null){

                    Uri mImageUri=data.getData();

                }else{
                    if(data.getClipData()!=null){
                        ClipData mClipData=data.getClipData();
                        ArrayList<Uri> mArrayUri=new ArrayList<Uri>();
                        for(int i=0;i<mClipData.getItemCount();i++){

                            ClipData.Item item = mClipData.getItemAt(i);
                            Uri uri = item.getUri();
                            mArrayUri.add(uri);

                        }
                        Log.v("LOG_TAG", "Selected Images"+ mArrayUri.size());
                    }

                }

            }

        }

        super.onActivityResult(requestCode, resultCode, data);
    }

Answer 2

从图库中选择多个图像，您可以使用以下代码

String[] projection = {
        MediaStore.Images.Thumbnails._ID,
        MediaStore.Images.Thumbnails.IMAGE_ID
};

mCursor = getContentResolver().query(
        MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI,
        projection,
        null,
        null,
        MediaStore.Images.Thumbnails.IMAGE_ID + " DESC"
);

columnIndex = mCursor.getColumnIndexOrThrow(projection[0]);

Answer 3

Cursor cursor = this.getContentResolver().query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null,
                null, null);

        cursor.moveToFirst();

        for (int i = 0; i < cursor.getCount(); i++) {
            cursor.moveToPosition(i);
            int cols = cursor.getColumnCount();
            String columns = null;
            for (int j = 0; j < cols; j++) {
                columns += cursor.getColumnName(j) + " | ";
            }

            imagePathUriList.add(cursor.getString(1));


        }

Answer 4

这是我在科特林拍摄的。该调用来自一个片段，应该在几乎没有调整的情况下工作。

//const lives in companion or above class definition
private const val PHOTO_PICKER_REQUEST_CODE = 36

private fun launchPhotoPicker() {
    Intent(Intent.ACTION_PICK).apply {
        putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
        type = "image/*"
    }.let {
        startActivityForResult(it, PHOTO_PICKER_REQUEST_CODE)
    }
}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    if (requestCode == PHOTO_PICKER_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {

            val selectedPhotoUris = mutableListOf<Uri>()

            data?.data?.let {
                selectedPhotoUris.add(it)
            }

            data?.clipData?.let { clipData ->
                for (i in 0 until clipData.itemCount) {
                    clipData.getItemAt(i).uri.let { uri ->
                        selectedPhotoUris.add(uri)
                    }
                }
            }

            //data.data is usually the first item in clipdata
            //I prefer to not make assumptions and just squash dupes
            //I don't trust like that
            val uris = selectedPhotoUris.distinctBy { it.toString() }

            handlePhotoUris(uris)
        }
    }

    super.onActivityResult(requestCode, resultCode, data)
}

private fun handlePhotoUris(uris: List<Uri>) {
    Log.d("photoPicking", "handle uris size: ${it.size}")
    //do stuff here
}

从图库中选择多个图像

4 个答案: