问题
In a big project while former developers already worked on, you can find dependencies in gradle that doesn't have any usages at all.
Do those dependencies affect apk size? and how dependencies affect apk size, what if you're just using one method from a library, does this mean that all the library files attached to your apk.
回答1:
Yes, unused dependencies do increase the apk size.
Enabling
minifyEnabled true
can analyze all the bytecode and remove unused classes and methods.
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
shrinkResources true
}
}
It is good to remove all the unused dependencies from gradle
回答2:
Do those dependencies affect apk size? and how dependencies affect apk size
Yes of course.
The dependencies are added in the final apk, so the classes and the resources are added and they increase the size of the apk.
what if you're just using one method from a library, does this mean that all the library files attached to your apk.
Yes, all the library is attached.
There are some features in gradle to add a dependency removing the unused resources.
回答3:
Yes gradle dependency definitely affects your apk size. if you are not using gradle dependency anywhere in the project then please remove the dependency
And even if you are using one mehtod from a library all files are attached to your apk. so to avoid this enable proguard tool with shrinkResource as true. This will obfuscate and simply remove unused method in the library and reduce the apk size
来源：https://stackoverflow.com/questions/41221828/does-adding-dependency-to-gradle-in-android-studio-while-not-using-it-at-all-aff