What is under app/src/main/res/mipmap-* during Android development? - android

I see in the documentation here https://developer.android.com/guide/topics/resources/drawable-resource.html, that all types of drawable resources are located under .../res/drawable.
Neither drawable resource is under .../res/mipmap-*.
So, does this mean that .../res/mipmap-* doesn't contain any drawables? If I create image file, scale it to various sizes and put into .../res/mipmap-*, the same way as ic_launcher lays, will I be able to refer this resource from XMLs as drawable?

So, does this mean that .../res/mipmap-* doesn't contain any drawables?
It contains bitmaps, mostly of launcher icons.
will I be able to refer this resource from XMLs as drawable?
No, but you will be able to refer to that resource as a mipmap (#mipmap/ic_launcher), the same way that you see in the manifest for launcher icons.

Related

android resizing images for all screens (ldpi,mdpi,hdpi,xhdpi) and put in folders

I am pretty new with android studio. I am wondering how you do all the converting thing ? You resize each image with gimp and creat all the folders. Or is there a program or function in android studio to do resizing for you ? And folders ?
Thank you for your help
You can use android-drawable-importer-intellij-plugin, I found it the best, all you have to do is import the image you want, and the plugin will create resized images for you.
Right click on your drawable folder
New > Image Asset for Launcher Icons, Action Bar and Tab Icons and Notification Icons
New > Vector Asset for Material icons, SVD's and PSD's
There is also a tool called Android Asset Studio which can do even more things for you
Use AndroidAssetStudio utility to do the same.
You organize your image/drawable resources in different folders within drawable folder, those are hdpi,xhdpi,ldpi folders. And have images resources in all these folders with respective resolutions with same name.
You could also user vector drawables that are resized according to screen size.
Go to this page to study this in detail

What should be the directory of an Image in Android

I have an image that has to be shown by imageview what should be the perfect directory for loading it as bitmap from string .I have tried putting it resource folder but failed.It would be great if you provide folder hierarchy.
Resource images should be stored in a res/drawable variant according to these guidelines.
By variant I mean any density dependant (-hdpi, -xhdpi...), orientation dependant (-land, -port), or any other qualifier or combination defined in the Table 2 of the linked document (mind the order of the qualifiers, it does matter as explained in the document).
It is a best practice to consider /res/drawable as a fallback should no better qualified directory apply.
can you post your code? Typically I put my images in drawable folder. By displaying it in imageView you should get the id of the image you wanted to place.

How to place 9patch generated images in Android Studio?

I used the freely available Simple 9patch generator available online, to generate a logo for my app's splash screen.
But how do I place it in Android Studio drawable folder?
Do I have to make separate drawable folders like ldpi, hdpi etc?
I tried that but when I try to set the image on a layout, it gives me an error saying
Cannot resolve symbol #drawable/something
You need to make sure, you have place the images in the correct folder. Here's an example,
Original post: Add 9-patch image to Android Studio
Get rid of the .9 in #drawable/splash.9. It is just #drawable/splash. .9.png is the file extension, and file extensions are not used in references to resources.

Android resources "best match" fallback logic

I've read the docs about Android Resources and I think I've understood the best-matching logic used by android to identify in which directory a particular resource should be searched first.. Supposing that drawable-hdpi, drawable-en-port and drawable-en* match the current device configuration, drawable-en-port is the best matching directory.. My question is, if a drawable is not found in drawable-en-port, does the system look directly in drawable or does it look in the second-best-match drawable-en and then in the third best match drawable-hdpi and so on until it reaches drawable? I suppose it works this way, but I did not find it explicitly said in the docs (unless I've read them too quickly and you will surely kill me :) ).
Yes it looks first in the drawable-en, then drawable-hdpi because language qualifier has higher precedence. If value was still not found drawable directory is searched. It is in accordance with:
How Android Finds the Best-matching Resource
If drawable-en contains matching resource then drawable-hdpi and drawable would be eliminated based on step 4 of the algorithm.
I read the intro portion
assume the following drawable directories each contain different versions of the same images
In your example Android would ignore the drawable-en-port folder because it does not have that drawable name in it. It would only look in the folders that have that drawable, therefore selecting the best matching folder. It would only select 'drawable' if there were no folders with a matching configuration and image.

Android: How can I packed some shapes into one resource file?

I've made a few shapes in drawable folder, is it possible to packed them in one resource file? How?
u can take indivitual images and place them one after the other with the
android:layout_x="0px"
android:layout_y="6px" parameters..
but it is not possible by default in android
Actually it is possible, by using level-list XML element.
If you look at this post it shows you how to do it.
You can even define the drawable within the level-list

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