我尝试在android studio中使用Scaffold和jetpack compose,但我不能在我的项目中使用scaffoldState。在@Composable Scaffold参数和rememberScaffoldState()方法中。
以下是我的简单项目:
package com.example.trainingtimer
import android.annotation.SuppressLint
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Scaffold
import androidx.compose.ui.Modifier
class MainActivity : ComponentActivity() {
@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
@OptIn(ExperimentalMaterial3Api::class)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
val scaffoldState = rememberScaffoldState()
Scaffold(
modifier = Modifier.fillMaxSize(),
scaffoldState = scaffoldState
) {
}
}
}
}
下面是我的build.gradle文件:
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
}
android {
namespace 'com.example.trainingtimer'
compileSdk 33
defaultConfig {
applicationId "com.example.trainingtimer"
minSdk 25
targetSdk 33
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'
}
buildFeatures {
compose true
}
composeOptions {
kotlinCompilerExtensionVersion '1.3.2'
}
packagingOptions {
resources {
excludes += '/META-INF/{AL2.0,LGPL2.1}'
}
}
}
dependencies {
//implementation 'com.google.android.material:material'
implementation 'androidx.core:core-ktx:1.10.1'
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.6.1'
implementation 'androidx.activity:activity-compose:1.7.2'
implementation platform('androidx.compose:compose-bom:2022.10.00')
implementation 'androidx.compose.ui:ui'
implementation 'androidx.compose.ui:ui-graphics'
implementation 'androidx.compose.ui:ui-tooling-preview'
implementation 'androidx.compose.material3:material3:1.1.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.5'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
androidTestImplementation platform('androidx.compose:compose-bom:2022.10.00')
androidTestImplementation 'androidx.compose.ui:ui-test-junit4'
debugImplementation 'androidx.compose.ui:ui-tooling'
debugImplementation 'androidx.compose.ui:ui-test-manifest'
}
我尝试将依赖项androidx.compose.material3:material 3的版本更改为1.0.0,但没有更改结果。
不推荐使用的scaffoldState?
提前感谢你能给予我的任何帮助。
1条答案
按热度按时间unftdfkk1#
Material 3中的
Scaffold
组合不再需要scaffoldState
:M2 ScaffoldState类不再存在于M3中,因为它包含不再需要的drawerState参数。要使用M3脚手架显示snackbar,请改用SnackbarHostState
阅读更多
现在的Scaffold看起来是这样的: