您是否在AndroidManifest.xml中声明了此活动？ 登录活动

Question

即使我的活动作为启动器在android清单文件中，我仍会收到此错误。

无法找到明确的活动类{com.alpha.hifivepro / com.alpha.hifivepro.activities.LoginActivity}； 您是否在AndroidManifest.xml中声明了此活动？

我在这三个位置都遇到错误。 当用户单击注销按钮时，他们应该进入loginactivity，但是我仍然收到上述错误。 有什么帮助吗？

    private void handleLogout() {

        mAuth.signOut();
        SendUserToLoginActivity();

    }

    private void SendUserToLoginActivity() {

        Intent loginIntent = new Intent(MainActivity.this, LoginActivity.class);
        loginIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        startActivity(loginIntent);
    }

AndroidManifest.xml

    <application
        android:name=".utils.MyApp"
        android:allowBackup="false"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="false"
        android:theme="@style/AppTheme"
        tools:replace="android:supportsRtl,android:allowBackup">
        <activity android:name=".activities.authentication.RegisterActivity"></activity>
        <!--
             The API key for Google Maps-based APIs is defined as a string resource.
             (See the file "res/values/google_maps_api.xml").
             Note that the API key is linked to the encryption key used to sign the APK.
             You need a different API key for each encryption key, including the release key that is used to
             sign the APK for publishing.
             You can define the keys for the debug and release targets in src/debug/ and src/release/.
        -->
        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="@string/google_maps_key" />

        <activity
            android:name=".activities.PickPlaceMapsActivity"
            android:label="@string/title_activity_pick_place_maps" />
        <activity
            android:name=".activities.authentication.LoginActivity"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

Answer 1

您的清单具有.activities.authentication.LoginActivity ，但错误显示为.activities.LoginActivity 。 您需要更正清单以使用相同的程序包名称，或将LoginActivity移至authentication程序包。