Question

我通过Android Studio在手机上启动应用，在应用中显示错误。如果我通过手机上的图标打开应用程序，那么它可以工作。我认为AndroidManifest.xml中存在问题附：如果设备不在Lolipop中，那么它无论如何都无法工作。

UPD：我在Google Play中发布了自己的应用。在Developer Console中，我收到一条通知消息，指出主要活动中出现错误，onCreate。但我在这里找不到任何东西。

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.engineers.great.firstapp"
    >
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/icon"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">

        <!--Below MA which started at first. I can can return here, if I use a  back button -->
        <activity android:name="com.engineers.great.firstapp.MainActivity"
            android:windowSoftInputMode="adjustResize"
            android:configChanges="orientation"
            android:screenOrientation="portrait">
            <intent-filter>
                <category android:name="android.intent.category.LAUNCHER"/>
                <action android:name="android.intent.action.MAIN"/>
            </intent-filter>

        </activity>
<!-- It's not a main menu lol if you click from MA on "START" then you will be here -->
        <activity android:name=".MainMenu"
            android:windowSoftInputMode="adjustResize"
                android:configChanges="orientation"
            android:screenOrientation="portrait">
            <intent-filter>
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
            </activity>
<!-- Below from MA1_! to MA2 are questions and results of my test. I set intent extras in everyone. I don't know, maybe it's important -->
        <activity android:name=".MainActivity1_1"
            android:windowSoftInputMode="adjustResize"
            android:configChanges="orientation"
            android:screenOrientation="portrait">

        </activity>
        <activity android:name=".MainActivity1_2"
            android:configChanges="orientation"
            android:screenOrientation="portrait">

        </activity>
        <activity android:name=".MainActivity1_3"
            android:configChanges="orientation"
            android:screenOrientation="portrait">
        </activity>
        <activity android:name=".MainActivity2"
            android:configChanges="orientation"
            android:screenOrientation="portrait">
        </activity>

       <!-- It's many buttons with different results of test  -->
        <activity android:name=".Sociotypes"
            android:configChanges="orientation"
            android:screenOrientation="portrait">

        </activity>


        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
    </application>

</manifest>

Answer 1

您没有在第一个活动中使用任何Launcher intent过滤器。在您要首先启动的活动中添加此项：

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

当我启动我的应用程序时，它不起作用。但如果我通过一个图标包含它，那么一切正常

1 个答案: