`android:exported 需要为 <activity> 明确指定，即使我已经指定了它

Question

我正在试用 DJI SDK，并且正在关注 this tutorial 如何将 SDK 集成到我创建的 Android Studio 项目中。我已经将所有内容复制到文件名，唯一的区别是我在 MainActivity.java.

中添加了所需的导入语句

我在尝试构建项目时遇到以下错误：

> Task :app:processDebugMainManifest FAILED
[path to projects]\AndroidStudioProjects\ImportSDKDemo\app\src\main\AndroidManifest.xml Error:
    android:exported needs to be explicitly specified for <activity>. Apps targeting Android 12 and higher are required to specify an explicit value for `android:exported` when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

See http://g.co/androidstudio/manifest-merger for more information about the manifest merger.


Execution failed for task ':app:processDebugMainManifest'.
> Manifest merger failed : android:exported needs to be explicitly specified for <activity>. Apps targeting Android 12 and higher are required to specify an explicit value for `android:exported` when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

我不确定如何修复它。提到的一种解决方案是减少 minSdk，但我的 minSdk 属性已设置为 19。

如有任何帮助，我们将不胜感激。

MApplication.java 和 MainActivity.java 的代码可以在 this tutorial 中找到。以下是一些其他文件：

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.dji.importSDKDemo">
    <!-- Permissions and features -->
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" />
    <uses-feature
        android:name="android.hardware.usb.host"
        android:required="false" />
    <uses-feature
        android:name="android.hardware.usb.accessory"
        android:required="true" />

    <application
        android:name=".MApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.ImportSDKDemo">
        <!-- DJI SDK -->
        <uses-library android:name="com.android.future.usb.accessory" />
        <meta-data
            android:name="com.dji.sdk.API_KEY"
            android:value="f114adf2dd1d12a008e3184d" />
        <activity
            android:name="dji.sdk.sdkmanager.DJIAoaControllerActivity"
            android:theme="@android:style/Theme.Translucent"
            android:exported="true">
            <intent-filter>
                <action android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED" />
            </intent-filter>
            <meta-data
                android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED"
                android:resource="@xml/accessory_filter" />
        </activity>
        <service android:name="dji.sdk.sdkmanager.DJIGlobalService">
        </service>

        <activity
            android:name=".MainActivity"
            android:configChanges="orientation"
            android:screenOrientation="portrait"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

build.gradle (:app)

plugins {
    id 'com.android.application'
}

android {
    compileSdk 31

    defaultConfig {
        applicationId "com.dji.importSDKDemo"
        minSdk 19
        targetSdk 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    packagingOptions{
        doNotStrip "*/*/libdjivideo.so"
        doNotStrip "*/*/libSDKRelativeJNI.so"
        doNotStrip "*/*/libFlyForbid.so"
        doNotStrip "*/*/libduml_vision_bokeh.so"
        doNotStrip "*/*/libyuv2.so"
        doNotStrip "*/*/libGroudStation.so"
        doNotStrip "*/*/libFRCorkscrew.so"
        doNotStrip "*/*/libUpgradeVerify.so"
        doNotStrip "*/*/libFR.so"
        doNotStrip "*/*/libDJIFlySafeCore.so"
        doNotStrip "*/*/libdjifs_jni.so"
        doNotStrip "*/*/libsfjni.so"
        exclude 'META-INF/rxjava.properties'
    }

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

dependencies {

    implementation 'androidx.appcompat:appcompat:1.4.0'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
    implementation ('com.dji:dji-sdk:4.12')
    compileOnly ('com.dji:dji-sdk-provided:4.12')

Answer 1

android：需要为带有意图过滤器

的activity设置导出

Answer 2

除了android:exported="true"

post 也提到需要 tools:node="merge" 或可能 tools:node="replace"

参见 Android 有关 Inspect the merged manifest and find conflicts

的文档

我还相信您需要 xmlns:tools="http://schemas.android.com/tools" 属性在您的 manifest XML 标签中，如 merge rule markers

中所述

`android:exported 需要为 <activity> 明确指定，即使我已经指定了它

`android:exported needs to be explicitly specified for <activity>` even though I have specified it

android

android-studio

dji-sdk