I've just started learning Compose (like an hour a...

# compose

[Jason Inbody]

I've just started learning Compose (like an hour ago). I'm trying to create a google map view from the crane demo app (https://github.com/android/compose-samples/blob/23fef0091a7f952516fcbd489c84760892[…]ain/java/androidx/compose/samples/crane/details/MapViewUtils.kt) and I'm trying to take out the mapview section out of the code and put it into my app. I'm getting an import error for LocalContext and LocalLifecycleOwner.

import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalLifecycleOwner

Not getting much from google were these renamed possibly? Or do i need to add a dep somewhere

[Kirill Grouchnikov]

Which version of Compose are you depending on? There was a recent refactoring (in the last couple of weeks) of a bunch of ambients to local "things"

[Jason Inbody]

Android Studio Arctic Fox | 2020.3.1 Canary 7
Build #AI-203.7148.57.2031.7136282, built on February 9, 2021
Runtime version: 11.0.8+10-b944.6842174 x86_64
VM: OpenJDK 64-Bit Server VM by N/A
macOS 10.16
GC: G1 Young Generation, G1 Old Generation
Memory: 1280M
Cores: 8
Registry: external.system.auto.import.disabled=true

[Kirill Grouchnikov]

Which version of Compose are you using in your app? In your Gradle build script.

[Jason Inbody]

I'm new to compose and not the most experienced with android studio. Will that work or is there somewhere to get the kotlin compose veresion inside canary

[Jason Inbody]

plugins {
    id 'com.android.application'
    id 'kotlin-android'
}

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "fin_aquatic_rentals.fin_aquatic_rentals"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), '<http://proguard-rules.pro|proguard-rules.pro>'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
        useIR = true
    }
    buildFeatures {
        compose true
    }
    composeOptions {
        kotlinCompilerExtensionVersion compose_version
        kotlinCompilerVersion '1.4.21'
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.3.2'
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.2.1'
    implementation "androidx.compose.ui:ui:$compose_version"
    implementation "androidx.compose.material:material:$compose_version"
    implementation "androidx.compose.ui:ui-tooling:$compose_version"
    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-alpha06'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

[Kirill Grouchnikov]

This - $compose_version - what is that version?

[Jason Inbody]

A newer version of androidx.compose.material:material than 1.0.0-alpha08 is available: 1.0.0-alpha12

[Jason Inbody]

ah ok should i update to alpha 12

[Kirill Grouchnikov]

For your link to Crane source, you will see the sample depending on Compose version here - https://github.com/android/compose-samples/blob/23fef0091a7f952516fcbd489c84760892[…]ildSrc/src/main/java/com/example/crane/buildsrc/Dependencies.kt

[Kirill Grouchnikov]

Line 57

[Jason Inbody]

Ok, I dont have a buildSrc Dependencies.kt. I'll go read up on using one and I think once i get the deps properly installed these import errors should be fixed

[Kirill Grouchnikov]

You don't need to go down the buildSrc route for a simple app where you explore things

[Jason Inbody]

well i plan to have this app slowly evolve to replace a cross platform app thats already wrote

[Jason Inbody]

is the buildSrc route recommended for compose projects or is the gradle route better?

[Kirill Grouchnikov]

Not for compose specifically. You can get some info at https://docs.gradle.org/current/userguide/organizing_gradle_projects.html#sec:build_sources

[Kirill Grouchnikov]

It's basically a folder that is treated by Gradle in a "special" way for everything related to build scripts. It's useful once your build logic becomes relatively complex

[Kirill Grouchnikov]

And you know how some people love their build complexity 🙂