签约发布后，Flutter安卓应用试图调试时崩溃

Question

我是flutter的新手，正在构建一个flutter应用作为学校项目的一部分。我和我的团队正在建立一个ios、android和web应用发布，我的任务是生成和签署我的应用捆绑发布在google play。我能够成功签署捆绑并上传项目。 我无法在模拟器上测试发布构建，但这是另一个可能相关的问题。

说到重点，我现在调试我的应用时遇到了一个问题。在重命名和配置构建类型之前没有问题，我只是使用默认的应用程序ID并在VScode中运行调试器。我的应用程序似乎成功构建（我想是因为我没有得到任何错误），但它没有正确安装在模拟器上。我在仿真器上得到一个弹出式通知，不幸的是，应用程序一直在关闭。在捕获日志中，我看到 "Waiting for observatory port to be available..."。

我已经重置了模拟器，flutter clean和重建。我试过在android studio中运行cleaningbuilding（调试），但没有用。

这里是捕获日志。我没有把它们全部包括在内，因为看起来应用程序是正确构建的。

                   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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell am force-stop com.sensationalscience.sensational_science
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [  +44 ms] executing: C:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.exe
[12:19:52 PM] [FlutterRun] [Info] [Flutter] <== [        ] executing: C:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 install -t -r C:\Users\Lauren\Documents\School\467\sensational_science\build\app\outputs\apk\app.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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.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:\Users\Lauren\AppData\Local\Android\sdk\platform-tools\adb.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

这是我的应用级build.gradle。请注意我的buildtypes。我不确定这些配置是否正确。我遵循了 https:/flutter.devdocsdeploymentandroid。 但他们对如何设置构建类型的解释很有限。

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 Manifest。我想知道是否是MainActivy的问题。我不太确定那个文件到底在哪里，而且在捕获日志的最后，在启动Intent时有一个引用。``

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。我得到了这个错误，无法使用Gradle发行版''运行分阶段构建动作。https:/services.gradle.orgdistributionsgradle-5.6.2-all.zip。'.无法启动守护进程.这个问题可能是由于守护进程的配置不正确造成的.例如,使用了一个未被识别的jvm选项.请参考用户手册中关于守护进程的章节,在 https:/docs.gradle.org5.6.2userguidegradle_daemon.html。

进程命令行。C:\Program Files (x86)Java/jdk1.8.0_172/bin/java.exe -Xmx1536M -Dfile.encoding=utf8 -Duser.country=US -Duser.language=en -Duser.variant -cp C:\Users/Lauren.gradle/wrapper/dists/gradle-5.6.2-all/9st6wgf78h16so49nn74lgtbb/gradle-5.6. 2lib\gradle-launcher-5.6.2.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 5.6.2请阅读下面的进程输出以了解更多：在初始化VMC时发生错误，不能为1572864KB对象保留足够的空间heapJava(0)

       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：添加安卓工作室崩溃细节。

  --------- 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) 

Answer 1

我已经解决了这个问题。当我改变应用程序名称ID时，我意外地改变了MainActivity.java类名。我把类名从Sensational Science改成了MainActivity。

package com.sensationalscience.sensational_science

import io.flutter.embedding.android.FlutterActivity

class MainActivity: FlutterActivity() {
}