buildException：java.io.ioException：未能生成v1签名

Question

有时，我的项目在这个时刻无法运行（它重建成功，但不能运行）：不幸的是，我还不熟练的梯度材料，请帮助Q_Q

：app:mergedebugjnilibfolders 4ms

：app：TransformNativelibsWithMergeJNilibsForDebug 359ms

：app：ProcessDebugJavares

：app：TransformResourcesWithMergeJavaResforDebug 436ms

它说：by：java.lang.IllegalArgumentException：缺少强制的Manifest-Version属性

清单文件内容如下：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="net.c7j.wna">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>


    <application
        android:name="net.c7j.wna.MyApp"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <uses-library android:name="com.google.android.maps" />

        <service android:name="net.c7j.wna.presentation.service.ForegroundService"/>
        <receiver android:name="net.c7j.wna.presentation.service.MyAlarmReceiver">
            <intent-filter>
                <action android:name="com.example.helloandroid.alarms" />
            </intent-filter>
        </receiver>

        <service android:name="net.c7j.wna.presentation.bootservice.AlarmSetService"/>
        <receiver android:name="net.c7j.wna.presentation.bootservice.BootReceiver" android:enabled="true">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>


        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="@string/google_maps_api_key" />

        <activity
            android:name="net.c7j.wna.presentation.view.ActivityPlay"
            android:windowSoftInputMode="adjustResize"
            android:screenOrientation="portrait"
            android:launchMode="singleTask"
            >

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

以下是构建分级文件：

apply plugin: 'com.android.application'
apply plugin: 'com.jakewharton.butterknife'
apply plugin: 'me.tatarka.retrolambda'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "net.c7j.wna"
        minSdkVersion 21
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"

        javaCompileOptions {
            annotationProcessorOptions {
                arguments = ["room.schemaLocation": "$projectDir/schemas".toString()]
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    packagingOptions {
        exclude 'META-INF/services/javax.annotation.processing.Processor'
        pickFirst 'META-INF/*'
    } // for butterknife
    lintOptions {
        disable 'ContentDescription'
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

def ver = [:]
ver.butterknife = "8.8.1"
ver.constraint = "1.0.2"
ver.glide = "3.8.0"
ver.okhttp_logging_interceptor = "3.9.0"
ver.picasso = "2.71828"
ver.retrofit2 = "2.3.0"
ver.room = "1.1.0-beta2"
ver.rx_java2 = "2.1.3"
ver.rx_android2 = "2.0.1"
ver.stetho = "1.5.0"
ver.support = "27.1.0"
ver.play_services = "12.0.1";
//

dependencies {
    implementation "com.google.firebase:firebase-core:$ver.play_services"
    implementation "com.google.android.gms:play-services-ads:$ver.play_services"
    implementation "com.google.android.gms:play-services-maps:$ver.play_services"
    implementation "com.android.support:appcompat-v7:$ver.support"
    implementation "com.android.support:recyclerview-v7:$ver.support"
    implementation "com.android.support:design:$ver.support"
    implementation "com.android.support.constraint:constraint-layout:$ver.constraint"
    implementation "com.jakewharton:butterknife:$ver.butterknife"
    annotationProcessor "com.jakewharton:butterknife-compiler:$ver.butterknife"
    implementation "com.squareup.picasso:picasso:$ver.picasso"
    implementation "io.reactivex.rxjava2:rxjava:$ver.rx_java2"
    implementation "io.reactivex.rxjava2:rxandroid:$ver.rx_android2"
    implementation "com.squareup.retrofit2:retrofit:$ver.retrofit2"
    implementation "com.squareup.retrofit2:converter-gson:$ver.retrofit2"
    implementation "com.squareup.retrofit2:adapter-rxjava2:$ver.retrofit2"
    implementation "android.arch.persistence.room:runtime:$ver.room"
    implementation "android.arch.persistence.room:rxjava2:$ver.room"
    annotationProcessor "android.arch.persistence.room:compiler:$ver.room"
    implementation "com.facebook.stetho:stetho:$ver.stetho"
}

//gradle assemble --stacktrace
//Don't move this apply plugin above or project will fail to build
apply plugin: 'com.google.gms.google-services'

根构建。梯度：

// Top-level build file where you can add configuration options common to all sub-projects/modules.


buildscript {

    repositories {
        google()
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.5.1'
        classpath 'com.google.gms:google-services:3.2.0'
        classpath 'me.tatarka:gradle-retrolambda:3.7.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

运行gradle assemble后--StackTrace：

错误：失败：生成失败，出现异常。

>

出错原因：在根项目'WNA3'中找不到任务'gradle'。

在3s中生成失败

完整堆栈跟踪：

Answer 1

packagingOptions {
        exclude 'META-INF/services/javax.annotation.processing.Processor'
        pickFirst 'META-INF/*'
    } // for butterknife

这句台词就是原因。移除一切都好。