获取存储在SD卡+ Android上的图像的缩略图乌里/路径

问题描述

SDK版本 - 1.6

我使用下面的意图，开放的Andr​​oid默认的库：

I am using following intent to open android's default gallery:

Intent intent = new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(
                        Intent.createChooser(intent, "Select Picture"), 101);

现在在 onActivityResult ，我能够拿到原始的URI和所选图像的路径，但我不能够得到URI和缩略图的路径选定的图像。

Now in onActivityResult, i am able to get the original Uri and path of the selected image, but i am not able to get the Uri and path of the thumbnail of selected image.

code用于获取原始图像URI和路径：

Code for getting the original image Uri and path:

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        try {

            if (requestCode == 101 && data != null) {

                Uri selectedImageUri = data.getData();
                String selectedImagePath = getPath(selectedImageUri);
} else {
                Toast toast = Toast.makeText(this, "No Image is selected.",
                        Toast.LENGTH_LONG);
                toast.show();
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public String getPath(Uri uri) {
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

PS：1）我不是找来调整图像这样的question.我专门找这是由Android操作系统本身产生的缩略图。

PS: 1) i am not looking to resize image like this question. I am specifically looking for the thumbnails which are generated by android OS itself.

2）使用SDK 1.6版所以在 ThumbnailUtils 类不感兴趣。

2) Using SDK version 1.6 so not interested in ThumbnailUtils class.

推荐答案

您可以使用它来得到缩略图：

You can use this to get the thumbnail:

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

有两种类型的缩略图：
MINI_KIND：512×384缩略图
MICRO_KIND：96×96缩略图

There are two types of thumbnails available:
MINI_KIND: 512 x 384 thumbnail
MICRO_KIND: 96 x 96 thumbnail

或使用queryMiniThumbnail具有几乎相同的参数，以获得缩略图的路径

OR use queryMiniThumbnail with almost same parameters to get the path of the thumbnail.

修改

Cursor cursor = MediaStore.Images.Thumbnails.queryMiniThumbnail(
                             getContentResolver(), selectedImageUri,
                             MediaStore.Images.Thumbnails.MINI_KIND,
                             null );
if( cursor != null && cursor.getCount() > 0 ) {
     cursor.moveToFirst();//**EDIT**
     String uri = cursor.getString( cursor.getColumnIndex( MediaStore.Images.Thumbnails.DATA ) );
}

心连心！

这篇关于获取存储在SD卡+ Android上的图像的缩略图乌里/路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！