无法启动 MainActivity - 您需要为此 activity 使用 Theme.AppCompat 主题(或后代)

Unable to start MainActivity - You need to use a Theme.AppCompat theme (or descendant) with this activity

当我通过 Android Studio(调试)在我的 phone 上 运行 我的应用程序工作时。

但是每当我尝试创建一个签名的发布 APK 并在我的 phone 上安装发布 APK 时,它会立即崩溃并在 logcat:

中显示此错误

java.lang.IllegalStateException You need to use a Theme.AppCompat theme (or descendant) with this activity

根据 logcat,错误发生在 MainActivity 的 onCreate 方法期间。

我查看了许多 Whosebug 线程和其他网站和论坛尝试解决方案,但 none 到目前为止对我有用。

例如,其中一些不起作用:

我的所有 Activity .java 类 扩展了 AppCompatActivity,我的 AppTheme 扩展了 Theme.AppCompat.Light.DarkActionBar 所以我不知道为什么会这样。

这是代码(希望这是所有相关代码):

(注:只有values/styles.xml,没有values-11,values-14等)

styles.xml:

<!-- Base application theme. -->
<style name="AppTheme" parent="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>


    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />

<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

AndroidManifest.xml:

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

        <!--
             The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
             Google Maps Android API v2, but you must specify either coarse or fine
             location permissions for the 'MyLocation' functionality. 
        -->

        <uses-permission android:name="android.permission.INTERNET" />
        <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
        <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

        <application
            android:name="android.support.multidex.MultiDexApplication"
            android:allowBackup="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name" >
            android:supportsRtl="true"

            android:theme="@style/AppTheme"
            <activity android:name=".MainActivity" >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </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=".MapsActivity"
                android:label="@string/title_activity_maps" />
            <activity android:name=".AuthenticationActivity"/>

            <service android:name=".FirebaseCMService" >
                <intent-filter>
                    <action android:name="com.google.firebase.MESSAGING_EVENT" />
                </intent-filter>
            </service>
        </application>

    </manifest>

activity_main.xml:

android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="org.drawsmile.mealsonandroid.MainActivity">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay"
    android:paddingTop="0dp">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/AppTheme.PopupOverlay">

    </android.support.v7.widget.Toolbar>

</android.support.design.widget.AppBarLayout>

<android.support.v4.view.ViewPager
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <android.support.v4.view.PagerTitleStrip
        android:id="@+id/pager_title_strip"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="top"
        android:background="@android:color/holo_red_light"
        android:textColor="#fff"
        android:paddingTop="8dp"
        android:paddingBottom="8dp" />

</android.support.v4.view.ViewPager>

MainActivity.java

package org.drawsmile.mealsonandroid;

...

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;

...

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

...

}

在您的 styles.xml 替换中,编辑 AppTheme

"Theme.AppCompat.Light.DarkActionBar"

来自

"Theme.AppCompat.Light.NoActionBar"

,这应该可以解决您的问题。

原因是,您正在尝试覆盖操作栏(可能),但应用程序已经有操作栏。希望对你有帮助

在您的 Manifest 中,您正在 application 标签之外应用主题,请参见下文。

<application
        android:name="android.support.multidex.MultiDexApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name" >
        android:supportsRtl="true"

        android:theme="@style/AppTheme"

改成这样

<application
        android:name="android.support.multidex.MultiDexApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name" 
        android:supportsRtl="true"
        android:theme="@style/AppTheme">