Why minify is not enabled by default in gradle build process - android

Why minify is not enabled by default in the gradle file of android?
Why proguard doesn't come with strictest rule by default in gradle file in android?
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'


For debugging you want minifyEnabled false. Otherwise you won't be able to debug through your code while you are testing. That is why they have it false by default.
It should only be true for release version.

Related

Generating signed apk stucks when minifyEnabled true is used

While generating releases apk with minify enabled true ,gradle build doesn't finish and stucks at app:crashlyticsUploadDeobsRelease.
gradle build log

Replace your build Types code with this code in app level gradle file. when you are debugging or running code on your device before final release then select built variant debug and when you are going to built signed apk for release then select built variant release
buildTypes {
debug {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
release {
shrinkResources true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}

How to disable proguard for androidTest

How to disable proguard for espresso test.
I enabled proguard for debug build type. But i want to disable proguard for espresso debug tests.
debug {
minifyEnabled true
shrinkResources true
useProguard true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
testProguardFile 'test-proguard-project.pro'
}
and my test-proguard-project.pro looks like
-dontoptimize
-dontwarn
-dontobfuscate
Still proguard is optimizing the test app. Please help me how to disable proguard for test app.

The way to do it is to turn on minifyEnabled but turn off Proguard:
minifyEnabled true
useProguard false

Removing unused resources requires unused code shrinking to be turned on

I am preparing to release an App to production. So, I generated signed apk. After generating signed apk, I was getting a problem. My apk file size is a little large and I tried ways to shrink the apk size. I already tried
app --> Refactor --> Remove Unused Resources
and it is not too reduce. So, I added shrinkResources true in my build.gradle(app)
buildTypes {
release {
minifyEnabled false
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
After adding shrinkResources true and I got below error when I rebuild. My question is how should I turn on unused Code shrinking first? Thanks and appreciating.

Resource shrinking works only in conjunction with code shrinking. After the code shrinker removes all unused code, the resource shrinker can identify which resources the app still uses. This is especially true when you add code libraries that include resources—you must remove unused library code so the library resources become unreferenced and, thus, removable by the resource shrinker
To enable resource shrinking, set the shrinkResources property to true in your build.gradle file (alongside minifyEnabled for code shrinking). For example:
android {
...
buildTypes {
release {
shrinkResources true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}
}
}
reference

Maybe you set by mistake minifyEnabled = false and shrinkResources = true in your buildTypes.debug, so, maybe, it is a root of a problem, not your buildTypes.release

android {
buildTypes {
release {
minifyEnabled true
shrinkResources true
}
}
}

You might want to refer to the Android Documentation to shrink your code and resources:
Shrink your code and resources
Like a comment already pointed out, resource shrinking only works when you have used the code shrinker. To enable shrinkResources in your build.gradle file you must have first set minifyEnabled to true

Simple just open the build.gradle file on App level i.e. android/app/build.gradle and implement this:
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
useProguard true
minifyEnabled false
shrinkResources false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}

In order to use resource shrinking, you also need to enable code shrinking as they both works in conjunction.
So to do so, set shrinkResources true along with minifyEnabled true.
You can follow the official site for the same.

make sure to add it into proper part of gradle
signingConfigs {
buildTypes {
debug {
buildConfigField "java.util.Date", "buildTime", "new java.util.Date(" + System.currentTimeMillis() + "L)"
}
release {
buildConfigField "java.util.Date", "buildTime", "new java.util.Date(" + System.currentTimeMillis() + "L)"
}
}
}
buildTypes {
release {
minifyEnabled false
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}

If you have added shrinkResources true make sure it comes after minifyEnabled true the order matters so https://stackoverflow.com/a/56426634/10355668 is correct thanks

gradle minifyEnabled false in buildTypes debug issue

This question might seem like a "duplicate question" but I've been looking at the same issue in S.O. and Google and I haven't found anything so before downvoting please read the question closely.
Inside my buildTypes (build.gradle) I want to enable proguard only for release mode, so I set inside debug block minifyEnabled false but if I put a breakpoint in debug mode it's skipped, otherwise if I set minifyEnabled false also inside release block all works fine.
Just tried clean, rebuild, invalidate cache. Nothing seem to works.
This is my buildTypes block:
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
Has someone encountered the same problem?
Thank you very much for your time and assistance in this matter.

Flag minifyEnabled stays for ProGuard, and it's turned off by default. So, in default setup both debug and release builds aren't using ProGuard, and parameter proguardFiles is effectively ignored

Android proguarded apk still readable

I tried to proguard my app. It successfully obfuscated the apk. However, when i try to view the java code of my apk using Apk_oneclick, I am able to. I have created a release version of my apk. Still the problem persist. Any help would be much appreciated.
Thanks in advance.
build.gradle:
Proguard Rules:
Java code from the release-apk:

For enabling ProGuard configurations for your application you need to enable it in your module level gradle file. you need to set the value of minifyEnabled true.
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
You can also enable shrinkResources true which will remove resources that ProGuard flaggs as unused.
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}

You need to set following property
and add some rules in proguard-android
buildTypes {
release {
debuggable false
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}

Got it working. Cleaned the project and ran the same with some changes in the Proguard rules.

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