原因：androidx.navigation.safeargs 只能与 androidx 项目一起使用

Question

I am facing issue with navigation component called safeargs .

I have used classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.0.0' in build.gradle.

While applying plugin androidx.navigation.safeargs.kotlin in app/build.gradle , I am getting following error:

Cause: androidx.navigation.safeargs can only be used with an androidx project

app/build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'androidx.navigation.safeargs.kotlin'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.test.navigationexample"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha4'
    implementation 'com.google.android.material:material:1.1.0-alpha05'
    implementation 'androidx.navigation:navigation-fragment-ktx:2.0.0'
    implementation 'androidx.navigation:navigation-ui-ktx:2.0.0'
}

Answer 1

I am facing issue with navigation component called safeargs .

I have used classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.0.0' in build gradle.

While applying plugin androidx.navigation.safeargs.kotlin in app/build.gradle , I am getting following error:

Cause: androidx.navigation.safeargs can only be used with an androidx project

app/build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'androidx.navigation.safeargs.kotlin'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.test.navigationexample"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha4'
    implementation 'com.google.android.material:material:1.1.0-alpha05'
    implementation 'androidx.navigation:navigation-fragment-ktx:2.0.0'
    implementation 'androidx.navigation:navigation-ui-ktx:2.0.0'
}

Answer 2

I am facing issue with navigation component called safeargs .

I have used classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.0.0' in build gradle.

While applying plugin androidx.navigation.safeargs.kotlin in app/build.gradle , I am getting following error:

Cause: androidx.navigation.safeargs can only be used with an androidx project

app/build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'androidx.navigation.safeargs.kotlin'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.test.navigationexample"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha4'
    implementation 'com.google.android.material:material:1.1.0-alpha05'
    implementation 'androidx.navigation:navigation-fragment-ktx:2.0.0'
    implementation 'androidx.navigation:navigation-ui-ktx:2.0.0'
}

Answer 3

The only thing that worked for me was.

In top of build.gradle file for the project:

buildscript {
    repositories {
        google()
    }
    dependencies {
        def nav_version = "2.4.2"
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
    }
}

In the same file under plugins add:

plugins {
    ...
    id 'androidx.navigation.safeargs.kotlin' version '2.4.2' apply false
}

In the build.gradle file for Module, under plugins add:

plugins {
    ...
    id 'androidx.navigation.safeargs.kotlin'
}

Answer 4

I am facing issue with navigation component called safeargs .

I have used classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.0.0' in build gradle.

While applying plugin androidx.navigation.safeargs.kotlin in app/build.gradle , I am getting following error:

Cause: androidx.navigation.safeargs can only be used with an androidx project

app/build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'androidx.navigation.safeargs.kotlin'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.test.navigationexample"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha4'
    implementation 'com.google.android.material:material:1.1.0-alpha05'
    implementation 'androidx.navigation:navigation-fragment-ktx:2.0.0'
    implementation 'androidx.navigation:navigation-ui-ktx:2.0.0'
}

Answer 5

If you have added the below lines in Gradle properties file then its okay

android.useAndroidX=true
android.enableJetifier=true

Please add this line to your project-level build.gradle

classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.3.5"

or current updated version.

Answer 6

I am facing issue with navigation component called safeargs .

I have used classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.0.0' in build gradle.

While applying plugin androidx.navigation.safeargs.kotlin in app/build.gradle , I am getting following error:

Cause: androidx.navigation.safeargs can only be used with an androidx project

app/build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'androidx.navigation.safeargs.kotlin'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.test.navigationexample"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha4'
    implementation 'com.google.android.material:material:1.1.0-alpha05'
    implementation 'androidx.navigation:navigation-fragment-ktx:2.0.0'
    implementation 'androidx.navigation:navigation-ui-ktx:2.0.0'
}

Answer 7

Solution

Create gradle.properties file inside app (if not exist already) folder and add the content of this example file into it. Sync your project and it worked for me.

Example gradle.properties File

Chill Pill :)

Answer 8

If you have multiple modules, you have to put the classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.3.5" into build.graddle in the root of project, not the one in the module. Then you can use id "androidx.navigation.safeargs" in the module.