应用程序数据库不会在应用程序卸载 Flutter 时被删除

Question

在我的应用程序中，我刚刚意识到在 Android 上卸载应用程序时 Sembast 数据库没有被删除，在 iOS 上它确实被删除了。在这里查看其他答案，我看到为了防止 Android 备份，在 AndroidManifest.xml 中设置了标志 android:allowBackup="false"。所以我在 android/main/app 中为 Manifest 做了。没有改变。应用程序卸载并重新安装后，数据库仍然存在。由于我的 phone 使用 Android 7.0 API 24 我想这个标志会影响下一次安装，但我必须手动删除数据库。这次。我是否正确添加了这个标志？


<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.vinny.fixit_cloud_biking">

    <!-- 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. -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />

    <application
        android:name="io.flutter.app.FlutterApplication"

        android:label="fixit"
        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"
            android:allowBackup="false">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" />
        <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
                <action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
            </intent-filter>
        </receiver>
        <!-- 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>
</manifest>

我试图在 phone 目录 Android/data/com.vinny.fixit_cloud_biking/files 中寻找 db 文件夹，但只有一个 Pictures 文件夹。我在哪里可以删除旧数据库？这是单例中声明的路径 final dbPath = join(appDocumentDir.path, 'device.db');

Answer 1

尝试在 <application> 级别而不是 <activity> 级别添加 android:allowBackup="false"

 <application
        android:name="io.flutter.app.FlutterApplication"
        android:allowBackup="false"

Answer 2

试试这个

将其添加到清单标签中

xmlns:tools="http://schemas.android.com/tools"<br>
                  tools:replace="allowBackup"<br>
                  android:allowBackup="false"<br>

<?xml version='1.0' encoding='utf-8'?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
              tools:replace="allowBackup"
              android:allowBackup="false"/>

还可以加 android:allowBackup="false"（在应用程序标签上）

应用程序数据库不会在应用程序卸载 Flutter 时被删除

App database is not deleted on app uninstall Flutter

android

flutter

flutter-dependencies

sembast