I'm having some trouble when uploading high definition pictures in my app.
I have a Grid View and when I add the photo the app crashes stating that its a memory problem.
One solution I did was to decrease the size of the image through a website (https://www.befunky.com/create/resize-image/) but the image gets blurie.
Also used a solution that is present on the official Android developers' website (https://developer.android.com/topic/performance/graphics/load-bitmap.html), unsuccessfully (the app gets too slow and I have the previous result).
I've seen many applications where this is not a issue and I want to learn the way they do it correctly.
Try Picasso, it can load an image into your imageView from your drawable (or url), and its fit() method allows you to reduce the image to the lowest possible resolution, without affecting quality.
Basically, it measures the dimensions of the target ImageView and uses resize() to reduce the image size to the dimensions of your ImageView:
High quality picture in drawable folder:
Picasso.with(context)
.load(R.drawable.image)
.fit()
.into(imageView);
High quality picture from a url:
Picasso.with(context)
.load("www.url.com/image.jpg")
.fit()
.into(imageView);
You can find more details on how to use fit, resizing and scaling with Picasso here.
Related
I'm loading an image from a file. It's a photo gallery so I don't want the image resolution to be scaled down. I've found this code snippet that seems to work great on my devices but I've had users complain about low res images before (That I've been unable to replicate but have confirmed they're real issues) so I want to play it safe.
Will this code snippet load the full resolution image or does it require more than this?
File pageFile = getPageFile();
Glide.with(mPhotoView).load(pageFile)
.apply(new RequestOptions()
.override(Target.SIZE_ORIGINAL))
.into(mPhotoView);
For clarity:
Previously, we were creating our own bitmap from the file input stream and applying it like this:
Glide.with(mPhotoView).load(bitmap).into(mImageView);
This is when users started complaining about image resolution
Please try below:-
Glide.with(imageView).load(url)
.apply(new RequestOptions()
.fitCenter()
.format(DecodeFormat.PREFER_ARGB_8888)
.override(Target.SIZE_ORIGINAL))
.into(imageView);
Also, add this android:adjustViewBounds="true" to your ImageView in XML.
You can use centerCrop() instead of fitCenter() to scale. If used centerCrop(), it scales the image so that it fills the requested bounds and then crops the extra.
I'm implementing a RecyclerView with a grid layout where in each grid element there is an ImageView in which Glide should load an image taken from and API.
The API returns images of varying dimensions but mostly lage files, and gives the following information about each image:
width and height
size and format (jpg/png)
original size url
thumbnail size url
The thumbnail is way too low quality to be used.
It allows me to filter for under or above a specific resolution, but if I do that I end up missing on the most interesting images. I want to be able to download a compressed version of any image, can glide do that? Is there a workaround to speed up the loading of such big images?
I tought of allowing better quality of wifi networks but I would like to cover all cases. Thanks.
I have a list view where I load image with person name. There are around 538 items in the list view. I get the images of persons from a url. Currently I am doing the following:-
Picasso.with(getContext()).load(url).resize(70,70).onlyScaleDown().into(im1);
The images present in the URL are very large in size and loading of some images takes a lot of time and it eats up my memory also while loading. Can some one please help me in loading the images efficiently and fastly.
Example image for one person can be found in the following URL:-
https://theunitedstates.io/images/congress/original/D000626.jpg
You can use onlyScaleDown() to resize
Picasso
.with(context)
.load(imageUrl)
.resize(6000, 2000)
.onlyScaleDown() // the image will only be resized if it's bigger than 6000x2000 pixels.
.into(imageViewResizeScaleDown);
Or you can use fit()
Picasso
.with(context)
.load(imageUrl)
.fit()
// call .centerInside() or .centerCrop() to avoid a stretched image
.into(imageViewFit);
fit() is measuring the dimensions of the target ImageView and internally uses resize() to reduce the image size to the dimensions of the ImageView. There are two things to know about fit(). First, calling fit() can delay the image request since Picasso will need to wait until the size of the ImageView can be measured. Second, you only can use fit() with an ImageView as the target (we'll look at other targets later).
The advantage is that the image is at the lowest possible resolution, without affecting its quality. A lower resolution means less data to be hold in the cache. This can significantly reduce the impact of images in the memory footprint of your app. In summary, if you prefer a lower memory impact over a little faster loading times, fit() is a great tool.
As per the new version of Picasso
Picasso.get().load(galleryList[position].mediaUrl).fit()
.placeholder(R.mipmap.ic_launcher).into(holder?.ivImags)
My goal is to use one large image containing a textured background for my Android app. At run-time I want cut out a screen-size piece of it and place it as the background image.
Which Image Loader would be better for this?
This review of Android Image Loader libraries described some procs and cons of the Picasso library and the UIL library (among others).
So far I think Picasso seems to match my needs. "Picasso allows you to specify
exact target image size." I believe this would accomplish my goal of cropping out a specific size of image, based on the device's screen size and density.
This article claims that UIL allows for a lot of customization, but then it also says it "doesn’t not provide a way to specify image size directly you want to load into a view".
Am I correct that Picasso will better allow me to crop an image to the size of the actual screen size?
By default, if I remember correctly, Picasso isn't able to crop an image out of the box. But, Picasso allows you to code transformations, and specify their use, as part of the loading process.
Picasso.with(ctx).load(uri)
.transform(new YourCropTransform(params...))
.into(target)
I am parsing a json schema which contains textual info and image urls for my android app. I want to read all the images from the schema and then show them in the gallery view of my android app.
But the problem is, the image urls contain HD pics and it takes a lot of time to load. Is there a way I can reduce the size of those images at run time and then display or can you suggest any improvement tip so that the images could load quickly from the schema?
Thanks
Try using Picasso library, it can resize your images whatever you like and bind it to ImageView. See also my answer here.
But if your images on your server are too big, it all depends on your internet connection, how fast they get to your device.
You can resize your image downloaded from url using picasso library. Also it will allow lazy loading of images and you can also set placeholder and error images in your imageview.
You can read complete documentation here: http://square.github.io/picasso/
Picasso.with(context)
.load(url)
.resize(50, 50)// resizing images
.centerCrop()
.into(imageView)