Android之删除图库照片

相关文章：Android手机读取相册图片，根据URI获取图片路径

从图库获取的Uri：content://media/external/images/media/20782

Uri uri = data.getData();

获取图片的本地路径：/storage/emulated/0/DCIM/Camera/IMG_20181106_142017.jpg

获取方法，将上述的URI传入：

path = getRealFilePath(HnUiUtils.getContext(), uri); //拿到图片

public static String getRealFilePath(final Context context, final Uri uri) {
        if (null == uri)
            return null;
        final String scheme = uri.getScheme();
        String data = null;
        if (scheme == null)
            data = uri.getPath();
        else if (ContentResolver.SCHEME_FILE.equals(scheme)) {
            data = uri.getPath();
        } else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {
            Cursor cursor = context.getContentResolver().query(uri,
                    new String[]{MediaStore.Images.ImageColumns.DATA}, null, null, null);
            if (null != cursor) {
                if (cursor.moveToFirst()) {
                    int index = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
                    if (index > -1) {
                        data = cursor.getString(index);
                    }
                }
                cursor.close();
            }
        }
        return data;
    }

删除方法：

//删除图库照片
    private boolean deleteImage(String imgPath) {
        ContentResolver resolver = this.getContentResolver();
        Cursor cursor = MediaStore.Images.Media.query(resolver, MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                new String[]{MediaStore.Images.Media._ID}, MediaStore.Images.Media.DATA + "=?",
                new String[]{imgPath}, null);
        boolean result = false;
        if (null != cursor && cursor.moveToFirst()) {
            long id = cursor.getLong(0);
            Uri contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
            Uri uri = ContentUris.withAppendedId(contentUri, id);
            HnLogUtils.e("--deleteImage--uri:" + uri);
            int count = this.getContentResolver().delete(uri, null, null);
            result = count == 1;
        } else {
            File file = new File(imgPath);
            result = file.delete();
        }
        HnLogUtils.e("--deleteImage--imgPath:" + imgPath + "--result:" + result);
        return result;
    }