problems with 'com.android.support:appcompat-v7.27.1.1' in the gradle file

Question

This is my dependencies file and there is an underlined red colored text on the compile \'com.android.support:appcompat-v7.27.1.1\'

apply plugin: \'com.andr         


        

Answer 1

Reason of fail

You are using incompatible version of firebase with 27.1.1 support version.

Current version > 16.0.0 and you use 11.6.0.

Solution

Update your firebase dependencies versions. I suggest update target sdk version also.

Below is updated gradle as of date 1-10-2018, you can see firebase page to check latest version.

apply plugin: 'com.android.application'
android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.abc.mcaproject"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    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:1.1.0'
    implementation 'com.google.firebase:firebase-database:16.0.2'
    implementation 'com.google.firebase:firebase-messaging:17.3.2'
    implementation 'com.google.firebase:firebase-auth:16.0.3'
    implementation 'com.google.firebase:firebase-storage:16.0.2'
}

apply plugin: 'com.google.gms.google-services'

Suggestion

Migrate to androidx because Android will not update support libraries after version 28.0.0.

Answer 2

just goto-> files->project structures->app->flavors change your min SDK version and target SDK version to "API 27:" then go to properties and check that your compile SDK version has also changed to the above version which you selected.

This worked for me.

Answer 3

In Android Studio 3.0 ,the compile configuration is now deprecated and should be replaced by implementation or api.

Just replace:

implementation 'com.android.support:appcompat-v7.27.1.1'

• compile with implementation
• testCompile with testImplementation.
• debugCompile with debugImplementation.
• androidTestCompile with androidTestImplementation.
• compileOnly is still valid. It was added in 3.0 to replace provided and not compile.

for more information read this gradel doc

Answer 4

when you hover over the red line it may show you the image like this which I have attached below.

What it tells you is there is a conflict of the version in some libraries so it suggests us to add those. For my case first, it showed for CardView and then for Design. So I added to it. Below is the code for it.

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
    implementation 'com.payumoney.sdkui:plug-n-play:1.2.0'
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.android.support:design:27.1.1'

    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'
}

so kindly add those it may be 2 or more than that. Hope that helps.