Question

我在Android项目中工作，在 Adroid Studio 3.0 更新后，问题就出现了。

预览我的activities停止显示数据，项目仍在构建，我可以在模拟器/手机上安装，但我无法看到我在XML布局中所做的所有更改，这里是错误讯息：

Failed to load AppCompat ActionBar with unknown error.

并且发生了错误：

- android.support.v7.widget.AppCompatImageView (Open Class, Show Exception, Clear Cache)
- android.support.design.widget.CoordinatorLayout (Open Class, Show Exception, Clear Cache)
- android.support.v7.widget.RecyclerView (Open Class, Show Exception, Clear Cache)
- android.support.design.widget.FloatingActionButton (Open Class, Show Exception, Clear Cache)
- android.support.v7.widget.Toolbar (Open Class, Show Exception, Clear Cache)
- android.support.v7.widget.AppCompatTextView (Open Class, Show Exception, Clear Cache)
- android.support.v7.widget.ActionBarContextView (Open Class, Show Exception, Clear Cache)
- android.support.v7.app.WindowDecorActionBar (Open Class, Show Exception, Clear Cache)
- android.support.v7.widget.ActionBarOverlayLayout (Open Class, Show Exception, Clear Cache)

我读了这个链接here，这似乎是一个Gradle问题，我试图在我的git repo中恢复旧版本的Gradle，但问题还在继续，这是我的傻瓜：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion '26.0.2'

    lintOptions {
        checkReleaseBuilds false
        abortOnError false
    }

    defaultConfig {
        applicationId "br.com.golfetto.golfettomobile"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "2017.11.07"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    dexOptions { javaMaxHeapSize "4g" }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile project(path: ':componentsutils')
    compile group: 'com.google.guava', name: 'guava', version: 'r05'
    compile 'com.github.barteksc:android-pdf-viewer:2.5.1'
    compile group: 'commons-io', name: 'commons-io', version: '2.4'
    compile 'com.sackcentury:shinebutton:0.1.4'
    compile 'net.colindodd:toggleimagebutton:1.2'
    compile 'com.sackcentury:shinebutton:0.1.4'
    compile 'net.colindodd:toggleimagebutton:1.2'
    compile 'com.android.support:multidex:1.0.1'
    compile 'com.android.support:appcompat-v7:24.2.0'
    compile 'com.android.support:design:23.4.0'
    compile 'com.android.support:support-v4:23.4.0'
    compile 'br.com.livroandroid:android-utils:1.0.2'
    compile 'com.android.support:cardview-v7:23.4.0'
    compile 'com.mikhaellopez:circularimageview:3.0.2'
    compile 'com.synnapps:carouselview:0.0.9'
    compile 'se.emilsjolander:sprinkles:1.3.1'
    compile 'com.squareup.retrofit:retrofit:1.9.0'
    compile 'com.squareup.okhttp:okhttp:2.7.5'
    compile 'com.github.d-max:spots-dialog:0.4@aar'
    compile 'com.antonionicolaspina:revealtextview:2.0'
    compile 'com.jaredrummler:material-spinner:1.0.9'
    compile 'com.google.firebase:firebase-core:9.0.2'
    compile 'com.google.firebase:firebase-messaging:9.0.0'
    compile 'junit:junit:4.12'
    compile 'com.bcgdv.asia.lib:fanmenu:1.2'
    compile 'com.google.android.gms:play-services:9.4.0'
    compile 'com.google.firebase:firebase-crash:9.4.0'
    compile 'com.android.support:recyclerview-v7:23.4.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.github.chrisbanes:PhotoView:1.2.6'
    testCompile 'junit:junit:4.12'
}

编辑：

为了澄清，我已经尝试在styles.xml中更改主题，这里是更改：

<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

对于那些有帮助的人，我很感激

Answer 1

您需要在build.gradle中使用相同版本的compileSdkVersion，buildToolsVersion，targetSdkVersion和Support Library。你需要改成这样的东西：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '26.0.2'

    lintOptions {
        checkReleaseBuilds false
        abortOnError false
    }

    defaultConfig {
        applicationId "br.com.golfetto.golfettomobile"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 1
        versionName "2017.11.07"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    dexOptions { javaMaxHeapSize "4g" }
}
dependencies {
    ...
    compile 'com.android.support:appcompat-v7:26.1.0'
    compile 'com.android.support:design:26.1.0'
    compile 'com.android.support:support-v4:26.1.0'
    compile 'com.android.support:cardview-v7:26.1.0'
    compile 'com.android.support:recyclerview-v7:26.1.0'
}

在Picking your compileSdkVersion, minSdkVersion, and targetSdkVersion

阅读有关该文章的文章

Answer 2

只需清理并重建您的项目，它就会再次运作。

更新后预览停止工作

2 个答案: