Develop Reference

Android API not allowing application to be released on play store

I have just finished working with my android project and decided to publish it on Google Play Store. When I uploaded the signed APK file in the production tab of Google Play Console, I faced the following issue:
Here is the gradle information:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.parma.torupee"
minSdkVersion 26
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.android.support:design:26.1.0'
compile 'com.jjoe64:graphview:4.2.1'
}
I have developed the application in Android Studio 3.0.1(did not update). I tried changing the targeted SDK to 29 but then I received errors for implementation 'com.android.support:appcompat-v7:26.1.0' and implementation 'com.android.support:design:26.1.0' lines in the gradle file.
How can I change the target SDK to 29 such that it supports the latest version and also support API level 26(Oreo)? Any help would be highly appreciated!

Compile SDK Version
The Compile SDK Version is the version of Android in which you write code. If you choose 9, you can write code with all the APIs in version 28.
Minimum SDK Version
Android operating system (OS) versions are backward-compatible. If your minSdkVersion is set to Android version 22, your application will run on Lolipop (5.1) and above .
Target SDK Version
You should set the targetSdkVersion to the most recent version of Android that you have tested on.
Whenever a new version of Android comes out, you will want to update the targetSdkVersion to the latest Android version and test your app to fix any problems. If you don’t google may force you to update it. This allows you to use the new security patches commonly applied for most of the OS versions.
Increasing your target sdk doesnt affect the minimum version number you have defined.
EDITED : Updated comment on support library
If you want to update your target SDK to 28 then it might be easier as you could use the below support libraries
com.android.support:support-compat:28.0.0 but if you plan to use target sdk as 29 then you have to migrate all your support packages to androidx libraries .
https://developer.android.com/topic/libraries/support-library/packages
For easier migration you could follow the stesp give here https://developer.android.com/jetpack/androidx/migrate
Let me know if this helps

You could use:
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'com.android.support:design:29.0.0'

Error in building gradle - com.google.android.gms:play-services-basement is being requested by various other libraries

I am trying to integrate Facebook sign in feature to my android app using Firebase-UI library. I am following this tutorial - https://firebase.google.com/docs/auth/android/firebaseui?authuser=0
But I am getting below error while trying to build gradle:
The library com.google.android.gms:play-services-basement is being requested by various other libraries at [[15.0.1,15.0.1]], but resolves to 16.0.1. Disable the plugin and check your dependencies tree using ./gradlew :app:dependencies.
Below is my app level build.gradle file
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "company.com.mygame"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.0'
implementation 'com.facebook.android:facebook-android-sdk:4.37.0'
implementation 'com.google.firebase:firebase-core:16.0.4'
implementation 'com.firebaseui:firebase-ui-auth:4.2.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'
I saw below links -
com.google.android.gms:play-services-measurement-base is being requested by various other libraries
https://github.com/OneSignal/OneSignal-Gradle-Plugin/issues/37
But then I get this error -
Manifest merger failed : uses-sdk:minSdkVersion 15 cannot be smaller than version 16 declared in library [com.firebaseui:firebase-ui-auth:4.2.0] C:\Users\me\.gradle\caches\transforms-1\files-1.1\firebase-ui-auth-4.2.0.aar\xxx\AndroidManifest.xml as the library might be using APIs not available in 15
Suggestion: use a compatible library with a minSdk of at most 15,
or increase this project's minSdk version to at least 16,
or use tools:overrideLibrary="com.firebase.ui.auth" to force usage (may lead to runtime failures)
But the issue is still not fixed. I have just started learning android, not sure what am I missing.

I had the same issue
Just make sure that you have the latest versions of all the dependencies. I used the current versions for Firebase core and auth.
You can get the latest versions from here .
Using the latest version at current point of time:
in app/build.gradle :
dependencies {
...
// Add these code
implementation 'com.google.firebase:firebase-core:16.0.8'
implementation 'com.google.firebase:firebase-auth:16.2.0'
}
in android/build.gradle :
buildscript {
ext {
...
minSdkVersion = 16
...
}
}

Your error says : uses-sdk:minSdkVersion 15 cannot be smaller than version 16 and your build.gradle as minSdkVersion 15. Try to change it to 16 and see if that works for you.
All the best for learning android. May the force be with you.
Over and out,
Aashish

What should i set for my compileSdkVersion?

apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "com.ta2323.ftsm.lab_recyclerview_a160158"
minSdkVersion 15
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile 'com.android.support:cardview-v7:26.0.0-alpha1'
}
Can someone help me? Im not sure what to use and im confuse to use which version. Can someone explain more detail?
This is my coding in build gradle.

compileSdkVersion
The compileSdkVersion property specifies the compilation target.
The latest target sdk version is 26 so use compile sdk version 26.
The compileSdkVersion is the version of the API the app is compiled against. This means you can use Android API features included in that version of the API (as well as all previous versions, obviously). If you try and use API 16 features but set compileSdkVersion to 15, you will get a compilation error. If you set compileSdkVersion to 16 you can still run the app on a API 15 device as long as your app's execution paths do not attempt to invoke any APIs specific to API 16.
See more here

Use the compile SDK version the same as the prefix of build tools version. And always go for the latest one. So use 26 for now.

You should always use the same version for the following in your build.gradle:
compileSdkVersion
buildToolsVersion
targetSdkVersion
Support library
Because you set the support library and buildToolsVersion to version 26, then you need to stick with 26 for all the above list. This is because when using buildToolsVersion "26.0.1" you're specifying the build tools for API 26. So, you need to change your build.gradle to something like this (read the comment):
apply plugin: 'com.android.application'
android {
/**
* compileSdkVersion specifies the Android API level Gradle should use to
* compile your app. This means your app can use the API features included in
* this API level and lower.
*/
compileSdkVersion 26
/**
* buildToolsVersion specifies the version of the SDK build tools, command-line
* utilities, and compiler that Gradle should use to build your app. You need to
* download the build tools using the SDK Manager.
*
* If you're using Android plugin 3.0.0 or higher, this property is optional—
* the plugin uses the minimum required version of the build tools by default.
*/
buildToolsVersion "26.0.2"
defaultConfig {
// Defines the minimum API level required to run the app.
minSdkVersion 15
// Specifies the API level used to test the app.
targetSdkVersion 26
...
}
}
dependencies {
...
// NEVER USE ALPHA Version in your dependencies.
compile 'com.android.support:appcompat-v7:26.1.0'
compile 'com.android.support:recyclerview-v726.1.0'
compile 'com.android.support:cardview-v7:26.1.0'
}
Read more at Configure Your Build

Android Studio Build.Gradle Sync Error

I am experiencing a problem building my application in Android Studio. I am using Android Studio 2.2 Preview 7. When I start up my Android Studio it gives an error:
The plugin is too old, please update to a more recent version, or set
ANDROID_DAILY_OVERRIDE environment variable to xxxxxxx.
It requests I fix plugin version and sync project. I have made all the required updates but the error remains. I have read similar questions on the issue but they don't seem to apply to my case.
Could you please assist in providing me with a working solution?
Here is my build.gradle file:
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig {
applicationId "com.mobileappdev.novarttech.sunshine"
minSdkVersion 10
targetSdkVersion 23
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha4'
compile 'com.android.support:design:23.3.0'
testCompile 'junit:junit:4.12'
}

As per my observation it seems like you haven't updated Android SDK platform to version 25. First of all download and install android sdk platform and build tools from SDK Manager and use the following lines in your build.gradle(module app)
compileSdkVersion 25
buildToolsVersion "25.0.0"
Also update dependencies according to that. It should work then

As #claudio-redi says, you need to upgrade your build gradle tools.
Use build tools 2.2.2 to your root build.gradle:
classpath 'com.android.tools.build:gradle:2.2.2'
And change the gradle distribution to 2.14.1 in gradle/wrapper/gradle-wrapper.properties file with:
distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
Or if you already have download the gradle distribution and place it in a directory, you can set it in your Android Studio from menu File->Setting->Gradle and set it as the following image:
Please be noted when you want to use API Level 25 you need to make sure that compileSdkVersion, buildToolsVersion, targetSdkVersion, and Support Library using the same API Level 25.

Android API level - gradle compiles - will it run?

I changed the API level in my android project for test purposes from 22 down to 7 in the build.gradle file.
Gradle has no problems to build the project and it runs on my (Android 5.1 OS) withouth problems.
Does the successfull build indicates the app would run without problems on lower OS (down to API level 7)? If not - how can I check which API is the lowest appropriate for my application?
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.myapplication"
minSdkVersion 7
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.0'
compile 'com.android.support:design:23.2.0'
}

The Gradle tooling, especially Lint, is nowadays very good to figure out whether or not your minSdkVersion really works for your app and will usually block a release build in the lintVitalRelease task when you use API that is not available on your min SDK level.
And of course, you always could (and should) create an API level 7 emulator and test-drive your app there as well. Even if it does not crash right away, some things might behave weird / different or might plainly be not working or visible at all, because compat API calls you were using have been converted to noops on lower API levels.