Android studio：java.lang.ClassNotFoundException

问题描述 投票：-1回答：2

我在Android工作室开发了一个Android应用程序，当我直接从Android工作室运行应用程序它工作正常，但当我生成apk发送到任何设备并安装它应用程序崩溃并给我这个例外

RuntimeException: Unable to instantiate application com.projects.epic.khosomaty.MyApplication: java.lang.ClassNotFoundException: Didn't find class "com.projects.epic.khosomaty.MyApplication" on path: DexPathList[[zip file "/data/app/com.projects.epic.khosomaty-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]

这是导致异常的类

public class MyApplication extends Application {

    private static MyApplication mInstance;

    @Override
    public void onCreate() {
        super.onCreate();

        mInstance = this;
    }

    public static synchronized MyApplication getInstance() {
        return mInstance;
    }

    public void setConnectivityListener(ConnectivityReceiver.ConnectivityReceiverListener listener) {
        ConnectivityReceiver.connectivityReceiverListener = listener;
    }
}

这是清单文件

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

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

    <application
        android:name="com.projects.epic.khosomaty.MyApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="${applicationId}.provider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths" />
        </provider>

        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="A............o" />

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@mipmap/ic_launcher" />

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_color"
            android:resource="@color/white" />
        <meta-data
            android:name="com.facebook.sdk.ApplicationId"
            android:value="@string/facebook_app_id" />

        <activity
            android:name="com.facebook.FacebookActivity"
            android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
            android:label="@string/app_name" />
        <activity
            android:name="com.facebook.CustomTabActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />

                <data android:scheme="@string/fb_login_protocol_scheme" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Activities.Login"
            android:label="@string/log_in_tittle"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.SignUp"
            android:label="@string/sign_up_tittle" />
        <activity
            android:name=".Activities.ChangePassword"
            android:label="@string/customer_change_password_tittle" />
        <activity
            android:name=".Activities.MerchantDetails"
            android:label="@string/title_activity_merchant_details" />
        <activity
            android:name=".Activities.GeneralSearchResult"
            android:label="@string/title_activity_search_result"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.DisscountsFilter"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.DiscountsFilterResult"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.SaleDetails"
            android:label="@string/title_activity_sale_details"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.MerchantsFilter"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.MerchantsFilterResult"
            android:theme="@style/AppTheme.NoActionBar" />

        <service android:name=".SendTokenIDService">
            <intent-filter>
                <action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
            </intent-filter>
        </service>
        <service android:name=".FireBaseMessagingService">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>

        <activity
            android:name=".Activities.RegisterVerify"
            android:label="@string/customer_register_verify_tittle" />
        <activity
            android:name=".Activities.CustomerHome"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.CustomerAddNumber"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.CustomerEditProfile"
            android:theme="@style/AppTheme.NoActionBar">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.projects.epic.khosomaty.Activities.CustomerHome" />
        </activity>
        <activity android:name=".Activities.MerchantLogin" />
        <activity android:name=".Activities.MerchantSignUp" />
        <activity
            android:name=".Activities.MerchantHome"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name=".Activities.MerchantHome" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name=".Activities.MerchantAddDiscount" />
        <activity android:name=".Activities.MerchantAddWallet" />
        <activity
            android:name=".Activities.MerchantRecievedRequests"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name=".Activities.MerchantRecievedRequests" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Activities.WalletDetails"
            android:label="@string/title_activity_wallet_details"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.RequestConfirmDetails"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.MerchantAddPurchase"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.CustomerTransaction"
            android:parentActivityName=".Activities.CustomerHome"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name=".Activities.CustomerTransaction" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Activities.MerchantRebatePoints"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Activities.CustomerRebateConfirmation"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name=".Activities.CustomerRebateConfirmation" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Activities.CustomerWallet"
            android:label="@string/title_activity_customer_wallet" />
        <activity android:name=".Activities.CustomerFavoriteMerchants" />
        <activity
            android:name=".Activities.CustomerWalletTransactionDetails"
            android:label="@string/title_activity_customer_wallet_transaction_details" />
        <activity android:name=".Activities.Splash">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Activities.CustomerWalletDetails"
            android:label="@string/title_activity_customer_wallet_details" />
        <activity android:name=".Activities.Intro"></activity>
    </application>

</manifest>

有没有人知道为什么应用程序崩溃时，我生成apk ???

请注意我之前更改了包名称。

android android-studio
2个回答
0
投票

好吧，请确保不要使用build.gradle的applicationId字段中的新包名覆盖manifest.xml。

另外，如果我可以推荐一些东西：

public static synchronized MyApplication getInstance() { return mInstance; }

我认为这根本不是一个好主意。不要存储应用程序类的静态实例。我想建议使用activity.getApplication（）任何传递作为参考！

0
投票

嗨Badr请在下面的步骤和链接，然后UNCHECK即时运行，然后清洁，重建和运行项目后创建您的APK文件..

To disable Instant Run:

转到Android Studio

1-打开文件>设置或首选项对话框。

2-导航到构建，执行，部署>即时运行。

3-取消选中“启用即时运行”旁边的框。

请点击此链接https://developer.android.com/studio/run/index.html

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