JetpackComposeで画面遷移する
JetpackComposeで画面遷移する方法です。 以下の記事を参考にしながら画面遷移してみました。 まだまだ分からないことだらけです。
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| plugins { | |
| id 'com.android.application' | |
| id 'kotlin-android' | |
| } | |
| android { | |
| compileSdk 30 | |
| buildToolsVersion "30.0.3" | |
| defaultConfig { | |
| applicationId "com.example.jetpackcomposesample" | |
| minSdk 21 | |
| targetSdk 30 | |
| versionCode 1 | |
| versionName "1.0" | |
| testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" | |
| vectorDrawables { | |
| useSupportLibrary true | |
| } | |
| } | |
| buildTypes { | |
| release { | |
| minifyEnabled false | |
| proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), '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 '1.4.32' | |
| } | |
| } | |
| dependencies { | |
| implementation 'androidx.core:core-ktx:1.5.0' | |
| implementation 'androidx.appcompat:appcompat:1.3.0' | |
| implementation 'com.google.android.material:material:1.3.0' | |
| implementation "androidx.compose.ui:ui:$compose_version" | |
| implementation "androidx.compose.material:material:$compose_version" | |
| implementation "androidx.compose.ui:ui-tooling:$compose_version" | |
| implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1' | |
| implementation 'androidx.activity:activity-compose:1.3.0-alpha08' | |
| implementation "androidx.navigation:navigation-compose:2.4.0-alpha01" | |
| testImplementation 'junit:junit:4.+' | |
| androidTestImplementation 'androidx.test.ext:junit:1.1.2' | |
| androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0' | |
| androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version" | |
| } |
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| package com.example.jetpackcomposesample | |
| import android.os.Bundle | |
| import androidx.activity.ComponentActivity | |
| import androidx.activity.compose.setContent | |
| import androidx.compose.foundation.layout.Box | |
| import androidx.compose.foundation.layout.Column | |
| import androidx.compose.foundation.layout.fillMaxHeight | |
| import androidx.compose.foundation.layout.fillMaxWidth | |
| import androidx.compose.material.Button | |
| import androidx.compose.material.Text | |
| import androidx.compose.runtime.Composable | |
| import androidx.compose.ui.Alignment | |
| import androidx.compose.ui.Modifier | |
| import androidx.compose.ui.graphics.Color | |
| import androidx.compose.ui.text.TextStyle | |
| import androidx.compose.ui.tooling.preview.Preview | |
| import androidx.compose.ui.unit.sp | |
| import androidx.navigation.NavController | |
| import androidx.navigation.compose.* | |
| class MainActivity : ComponentActivity() { | |
| override fun onCreate(savedInstanceState: Bundle?) { | |
| super.onCreate(savedInstanceState) | |
| setContent { | |
| val navController = rememberNavController() | |
| NavHost(navController, startDestination = "profile") { | |
| composable("profile") { | |
| Profile(navController) | |
| } | |
| composable("friendList") { | |
| FriendList(navController) | |
| } | |
| } | |
| } | |
| } | |
| } | |
| @Composable | |
| fun Profile(navController: NavController) { | |
| Box( | |
| Modifier | |
| .fillMaxWidth() | |
| .fillMaxHeight(), | |
| contentAlignment = Alignment.Center | |
| ) { | |
| Column(horizontalAlignment = Alignment.CenterHorizontally) { | |
| Text( | |
| text = "Hello Profile!", | |
| style = TextStyle(fontSize = 22.sp, color = Color.Black) | |
| ) | |
| Button(onClick = { | |
| navController.navigate("friendList") | |
| }) { | |
| Text(text = "Navigate friendList") | |
| } | |
| } | |
| } | |
| } | |
| @Composable | |
| fun FriendList(navController: NavController) { | |
| Box( | |
| Modifier | |
| .fillMaxWidth() | |
| .fillMaxHeight(), | |
| contentAlignment = Alignment.Center | |
| ) { | |
| Column(horizontalAlignment = Alignment.CenterHorizontally) { | |
| Text( | |
| text = "Hello FriendList!", | |
| style = TextStyle(fontSize = 22.sp, color = Color.Black) | |
| ) | |
| Button(onClick = { | |
| navController.navigate("profile") | |
| }) { | |
| Text(text = "Navigate profile") | |
| } | |
| } | |
| } | |
| } |