When I install my application on my phone to test it, it displays a size of 11.35 MB. It is a very simple application that allows the user to visualize interesting facts. The only reason I can think of is that there are 14 JPEG files in the drawings that serve as background images for fun facts. The average size is about 500KB.
I want to reduce the size of my application so as not to consume valuable resources on the user’s device. In addition, how to get rid of the images, is it possible to optimize the size of the apk file?
EDIT: The pictures were taken by myself with the android phone.
How can I solve this problem?
I advise you to compress your .jpg files as much as possible, which should greatly reduce the size of your .apk file. A free tool like Paint.NET can help you with this. It offers great rearrangement possibilities.
Other responses mention image reduction. You can also try ProGuard to lower your byte code. Here is an article about applying ProGuard to an Android application.
Make sure that your jpg files are not saved with a higher resolution than necessary. A good Android phone has a screen resolution of 1920×1200 or 2560×1440 (around 2015) 800 x 480. So your background may not have more pixels than that (unless your application supports some kind of zoom). Also: Are there any background photos? If this is not the case, you can further reduce the file size by using a vector image format (e.g. svg) or a dynamic palette format (e.g. gif).
With the introduction of the 23.2 support library, you can now replace many of your images with SVG images (with or without animations) to further reduce the size of the apk.
This may be a late reaction, but it may be useful for future users.
Follow this link.
To summarize the page, here are the main points to reduce the size of the apk in general:
- With the help of ProGaurd
- Delete all debugging information present in the application (statements such as Log.i(()). They can be conditioned in a state that is only activated when the application is tested.
- Use recommended media formats
- Photo: PNG or JPG
- Audio: AAFC
- Video: H264 STRAW
- Image compression with OptiPNG or PNGCrush
- Use 9patch to scale the images
- With this tool you can find and delete unused resources.
- Avoid using multiple sources to get the same functionality. The resources are not limited to images, but also extend to APIs. Sometimes a single API can give multiple results instead of using two or three different APIs. Duplicates and goods are also a waste of space.
Solution No 5:
Converting to WebP, significantly reducing the size of the application
He reduced the size of my application from 40 MB to 25 MB.
- Right click on res
- Convert to WebP
What he does: It reduces the png format to WebP format. Moreover, the quality is not destroyed.
Solution No 6:
Besides optimizing the images, I also found it useful to look at the support libraries used. I have a relatively simple application that focuses on platforms with an API >=10, but despite this, my APK has increased by 2.2 million, or 1.4 million after using ProGuard. When I looked in the MOT, the code was 1.5M and there were a lot of extra resources (abc_*) I didn’t know about.
Then I found this: https://developer.android.com/tools/support-library/features.html
It turns out I don’t need appcompat-v7, only v4 support, and this change in my dependencies has reduced the MOT size to 1.7M (0.9M with ProGuard).
It is understandable that support libraries contain a lot of unnecessary code and resources, so it can be useful to use only the ones you need.
(Although -0.5M is not relevant for a request for 11M, I’m publishing it here because I was looking for a solution on this page…).
Solution No 7:
- Use tinypng to compress the
png or jpg image file format of your project, this can greatly reduce the size of the
image without loss of image quality;.
- Some images use a tinypng compression that can distort, you can convert
these images to WebP format, use 智 图 or
iSparta can convert other formats to WebP ;
- Use the plush, make sure no fluids are used and remove it;
Solution No 8:
In addition to the size of the image file, different algorithms can have a significant influence on the final size. I found Yahoo’s www.smushit.com much more efficient (at least for .png’s) than the compressors and codecs I currently have on my computer.
Solution No 9:
Four ways and the size of your application will increase from 11.35 MB to about 5 MB.
First check the application components using the App Analyzer (a built-in feature of Android Studio), click the Build button at the top of the page and then click Analyze MOT. It shows you all the components the apk uses.
- Security enabled
- Activate ShrinkResource
- resConfigs (call it as if your application is in only one language, e.g. English, and then just specify resConfigs as).
- Convert all images from .png or .jpg to Webp (the most important).
The steps to get there.
1 & 2. For Proguard and ShrinkResource
In degrees, just add
proguardFiles getDefaultProguardFile (‘proguard-android.txt’), ‘proguard-rules.pro’
- For resConfigs
- To convert all images from .png or .jpg to Webp
A very simple process: Just right-click on the drawing area (drawable, drawable-hdpi, drawable-xhdpi, etc.) and click convertToWebP (the latter option).
The Min SDK version must be 18 years old.
Let’s go, let’s go, let’s go, let’s go, let’s go: Now analyze the size of your application.
Solution No 10:
There are two things I can point out from experience.
- If you use eclipse to create an apk file, the sources are duplicated (as was the case in my case), you can try creating an apk with ant and build.xml and compare the size.
- Also check for overlapping agents in the field. Link to this site here.
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