我是flutter的新手，正在构建一个flutter应用程序，作为学校项目的一部分。我和我的团队正在构建一个ios、android和web应用程序版本，我的任务是生成和签署我的应用程序捆绑包，以便在谷歌播放中发布。我能够成功地签署捆绑包并上传项目。我无法在模拟器上测试版本构建，但这可能是另一个相关问题。
说到这里，我现在在调试我的应用程序时遇到了一个问题。在重命名和配置生成类型之前没有问题，我只是使用默认的应用程序ID并在VScode中运行调试器。我的应用程序似乎构建成功(我想是因为我没有收到错误(，但它没有正确安装在模拟器上。我在模拟上收到一个弹出通知，不幸的是应用程序一直在关闭。在捕获日志中，我看到"正在等待天文台端口可用…"。
我已经重置了模拟器，刷新并重建。我尝试过在android studio中运行/清理/构建(调试(，但没有成功。
以下是捕获日志。我没有把它们都包括在内，因为这个应用程序的构建似乎是正确的。
A: android:name(0x01010003)="com.google.android.gms.measurement.AppMeasurementReceiver" (Raw: "com.google.android.gms.measurement.AppMeasurementReceiver")
A: android:enabled(0x0101000e)=(type 0x12)0xffffffff
A: android:exported(0x01010010)=(type 0x12)0x0
E: receiver (line=177)
A: android:name(0x01010003)="com.google.android.gms.measurement.AppMeasurementInstallReferrerReceiver" (Raw: "com.google.android.gms.measurement.AppMeasurementInstallReferrerReceiver")
A: android:permission(0x01010006)="android.permission.INSTALL_PACKAGES" (Raw: "android.permission.INSTALL_PACKAGES")
A: android:enabled(0x0101000e)=(type 0x12)0xffffffff
A: android:exported(0x01010010)=(type 0x12)0xffffffff
E: intent-filter (line=182)
E: action (line=183)
A: android:name(0x01010003)="com.android.vending.INSTALL_REFERRER" (Raw: "com.android.vending.INSTALL_REFERRER")
E: service (line=187)
A: android:name(0x01010003)="com.google.android.gms.measurement.AppMeasurementService" (Raw: "com.google.android.gms.measurement.AppMeasurementService")
A: android:enabled(0x0101000e)=(type 0x12)0xffffffff
A: android:exported(0x01010010)=(type 0x12)0x0
E: service (line=191)
A: android:name(0x01010003)="com.google.android.gms.measurement.AppMeasurementJobService" (Raw: "com.google.android.gms.measurement.AppMeasurementJobService")
A: android:permission(0x01010006)="android.permission.BIND_JOB_SERVICE" (Raw: "android.permission.BIND_JOB_SERVICE")
A: android:enabled(0x0101000e)=(type 0x12)0xffffffff
A: android:exported(0x01010010)=(type 0x12)0x0
E: provider (line=197)
A: android:name(0x01010003)="com.google.firebase.provider.FirebaseInitProvider" (Raw: "com.google.firebase.provider.FirebaseInitProvider")
A: android:exported(0x01010010)=(type 0x12)0x0
A: android:authorities(0x01010018)="com.sensationalscience.sensational_science.firebaseinitprovider" (Raw: "com.sensationalscience.sensational_science.firebaseinitprovider")
A: android:initOrder(0x0101001a)=(type 0x10)0x64
E: meta-data (line=203)
A: android:name(0x01010003)="com.google.android.gms.version" (Raw: "com.google.android.gms.version")
A: android:value(0x01010024)=@0x7f080004
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +6 ms] Stopping app 'app.apk' on Android SDK built for x86.
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ ] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell am force-stop com.sensationalscience.sensational_science
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +44 ms] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell pm list packages com.sensationalscience.sensational_science
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +215 ms] package:com.sensationalscience.sensational_science
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +2 ms] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell cat /data/local/tmp/sky.com.sensationalscience.sensational_science.sha1
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +24 ms] 2ef7da51e6c1f4f4170671be4372471e59f61ee6
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ ] Installing APK.
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +1 ms] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe version
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +16 ms] Android Debug Bridge version 1.0.41
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== Version 29.0.6-6198805
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== Installed as C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ ] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe start-server
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [{"event":"app.progress","params":{"appId":"bc8e3997-0174-4387-ae07-3b6f69cdc04d","id":"1","progressId":null,"message":"Installing build\app\outputs\apk\app.apk..."}}]
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [ +17 ms] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 install -t -r C:UsersLaurenDocumentsSchool467sensational_sciencebuildappoutputsapkapp.apk
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [+3493 ms] Performing Streamed Install
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== Success
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [{"event":"app.progress","params":{"appId":"bc8e3997-0174-4387-ae07-3b6f69cdc04d","id":"1","progressId":null,"finished":true}}]
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [ +1 ms] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell echo -n cc0ff10c7a448e68c958b5ace7858fca4554ee4e > /data/local/tmp/sky.com.sensationalscience.sensational_science.sha1
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [ +31 ms] Android SDK built for x86 startApp
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [ +2 ms] executing: C:UsersLaurenAppDataLocalAndroidsdkplatform-toolsadb.exe -s emulator-5554 shell am start -a android.intent.action.RUN -f 0x20000000 --ez enable-background-compilation true --ez enable-dart-profiling true --ez enable-checked-mode true --ez verify-entry-points true --ez start-paused true com.sensationalscience.sensational_science/com.sensationalscience.sensational_science.MainActivity
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [ +95 ms] Starting: Intent { act=android.intent.action.RUN flg=0x20000000 cmp=com.sensationalscience.sensational_science/.MainActivity (has extras) }
[12:19:56 PM] [FlutterRun] [Info] [Flutter] <== [ ] Waiting for observatory port to be available...
Tue May 05 2020 [12:23:20 GMT-0600 (Mountain Daylight Time)] Log file ended
这是我的应用程序级build.gradle。请注意我的构建类型。我不确定这些配置是否正确。我紧随其后https://flutter.dev/docs/deployment/android但他们对如何设置构建类型的解释有限。
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services' // connection to firebase
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}
android {
compileSdkVersion 28
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
applicationId "com.sensationalscience.sensational_science"
minSdkVersion 16
targetSdkVersion 28
multiDexEnabled true
versionCode = flutterVersionCode.toInteger()
versionName flutterVersionName
}
//**Note in my app I have the correct key info I just replaced the information here.
signingConfigs {
release {
keyAlias keystoreProperties['xx']
keyPassword keystoreProperties['xx']
storeFile keystoreProperties['C:\Keystore\xx'] ? file(keystoreProperties['xx']) : null
storePassword keystoreProperties['xx']
}
}
buildTypes {
release {
signingConfig signingConfigs.release
}
debug {
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.google.firebase:firebase-analytics:17.2.2' // connect to firebase analytics
implementation 'com.google.firebase:firebase-auth:19.3.0' // connect to firebase authentication
implementation 'com.google.firebase:firebase-firestore:21.4.2' // connect to firebase coud firestore
implementation 'com.android.support:multidex:1.0.3' // allow more than 64k methods with multidex enabling
}
这是我的android清单。我想知道MainActivy是否是问题所在。我不太确定那个文件到底在哪里/是什么，在捕获日志的末尾，在启动Intent时有一个对它的引用。``
package="com.sensationalscience.sensational_science">
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- io.flutter.app.FlutterApplication is an android.app.Application that
calls FlutterMain.startInitialization(this); in its onCreate method.
In most cases you can leave this as-is, but you if you want to provide
additional functionality it is fine to subclass or reimplement
FlutterApplication and put your custom class here. -->
<application
android:name="io.flutter.app.FlutterApplication"
android:label="sensational_science"
android:icon="@mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="@style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<!-- Specifies an Android theme to apply to this Activity as soon as
the Android process has started. This theme is visible to the user
while the Flutter UI initializes. After that, this theme continues
to determine the Window background behind the Flutter UI. -->
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="@style/NormalTheme"
/>
<!-- Displays an Android View that continues showing the launch screen
Drawable until Flutter paints its first frame, then this splash
screen fades out. A splash screen is useful to avoid any visual
gap between the end of Android's launch screen and the painting of
Flutter's first frame. -->
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="@drawable/launch_background"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<!-- Add UCrop Activity for image cropping (MPJ 4/21/20)-->
<activity
android:name="com.yalantis.ucrop.UCropActivity"
android:screenOrientation="portrait"
android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
<!-- Don't delete the meta-data below.
This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
<meta-data
android:name="flutterEmbedding"
android:value="2" />
</application>
这是我的build.gradle。我收到这个错误。无法使用gradle分发运行分阶段构建操作'https://services.gradle.org/distributions/gradle-5.6.2-all.zip"。无法启动守护进程。此问题可能是由于守护程序配置不正确造成的。例如，使用了一个无法识别的jvm选项。请参阅用户手册中有关守护程序的章节，网址为https://docs.gradle.org/5.6.2/userguide/gradle_daemon.html
进程命令行：C:\Program Files(x86(\Java\jdk1.8.0_172\bin\Java.exe-Xmx1536M-Dfile.concoding=utf8-Dusser.country=US-Dusser.language=en-Duser.variant-cp C:\Users\Lauren.gradle\wrapper\dists\gradle-56.6.2-all\9st6wgf78h16so49nn74lgtbb\gradle-56.62\lib\gradle-launcher-5.6.2.jar org.gradle-launscher.daemon.bootstrap.GradleDaemon 5.6.2请阅读以下流程输出以了解更多信息：初始化虚拟机时出错无法为1572864KB对象heapJava(0(保留足够的空间
buildscript {
ext.kotlin_version = '1.3.50'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.google.gms:google-services:4.3.3' // for connecting to firebase
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
编辑：我添加到捕获日志
编辑：添加android工作室崩溃详细信息：
--------- beginning of crash
2020-05-05 13:37:49.148 13524-13524/com.sensationalscience.sensational_science E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.sensationalscience.sensational_science, PID: 13524
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.sensationalscience.sensational_science/com.sensationalscience.sensational_science.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.sensationalscience.sensational_science.MainActivity" on path: DexPathList[[zip file "/data/app/com.sensationalscience.sensational_science-TWyC0kIWuswGoy1G-VAtCQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.sensationalscience.sensational_science-TWyC0kIWuswGoy1G-VAtCQ==/lib/x86, /data/app/com.sensationalscience.sensational_science-TWyC0kIWuswGoy1G-VAtCQ==/base.apk!/lib/x86, /system/lib, /vendor/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2718)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.sensationalscience.sensational_science.MainActivity" on path: DexPathList[[zip file "/data/app/com.sensationalscience.sensational_science-TWyC0kIWuswGoy1G-VAtCQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.sensationalscience.sensational_science-TWyC0kIWuswGoy1G-VAtCQ==/lib/x86, /data/app/com.sensationalscience.sensational_science-TWyC0kIWuswGoy1G-VAtCQ==/base.apk!/lib/x86, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.Instrumentation.newActivity(Instrumentation.java:1173)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2708)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
我已经解决了这个问题。当我更改应用程序名称/ID时，我意外地更改了MainActivity.java类名。我把班级名称从"感觉科学"改为"主要活动"。
package com.sensationalscience.sensational_science
import io.flutter.embedding.android.FlutterActivity
class MainActivity: FlutterActivity() {
}