How to open the Gallery view Under My app - android

I am working on an App which is selecting a single picture at a time from the gallery. Right Now I have used the intent to open the gallery. But I do not want to use this. This is just because of the Use Case which is as below :
If the user Selects the Picture which is not in Portrait then my app should show him dialog to warn him that he is selecting the wrong Photo. Only Portrait photos are allowed.
So for this, I think If I would open the gallery by intent I can not achieve this, So I moved to another Idea , to bring all the photos from the gallery into the app. For this I tried using the Universal image loader, But Unfortunately it is slow and not looking good.
So is there any way to open the device Gallery into the app directly so please guide me share me the code or any link. thanks

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enter image description here
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I am developing an application for Android I want the button in the .html file to show the device's native gallery (in my case is android) which user can select multiple images and present it's thumbnails in the html page.
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Thank you for all suggestion and solutions.
Ps. I found the solution of select multiple images Here but I am not sure how to use it. ;(
Unfortunately, this is not possible with the current Gallery application of Android.
Within the Gallery application, you can select multiple photos and you can share them using SEND_MULTIPLE Intent. But that is different.
When you select photo from your application, that is called PICKER. And PICKER Intent does not support multiple selection.

Picking an image from Android Gallery & Picassa

I am trying to open an image/picture in the Gallery built-in app from inside my application as described in here.
My "picker" activity works fine as long as the image is stored in the device, but the gallery app also displays images from Picassa, which returns a null path.
Does anyone knows how to fix this, either by getting the path or tell the "picker" intent to ignore Picassa as a provider, and only show me what is on my device?
Thanks.
I had this same problem here
What I did was just check the returning Uri to see if the selected image was a picassa image. probably not the best option but it works since there is no way to tell the image picker what images to show

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