Manifest merger failed with multiple errors in the Project

Question

I have some issues while running the gradle or running the application. Following are the error popping up in the console.

Manifest merger failed with multiple errors, see logs

The Following are the details of my Manifest.xml file that I have used in the project. I have upgraded my Gradle that's why its showing error. Please go through the below files.

Manifest.xml

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.lenovo.skanda">

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

    <application
        tools:replace="android:appComponentFactory"
        tools:node="replace"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".OnBoardActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name=".Registration">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name=".Login">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name=".PositivityFragment" />
        <activity android:name=".Stories">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name=".Feedback">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity android:name=".Notification" />
        <activity android:name=".NewAnalysis" />
        <activity android:name=".SucideCauses" />
        <activity android:name=".newStoriesmain" />
        <activity android:name=".activity_newpostivity" />
        <activity android:name=".sendstories" />
        <activity android:name=".AdminMenu" />
        <activity android:name=".adminUpdate" />
        <activity android:name=".adminUpdateQuotes" />
        <activity android:name=".adminUpdateQuotesSend" />
        <activity android:name=".QuoteList" />
        <activity android:name=".adminUpdateStories" />
        <activity android:name=".adminUpdateStoriesSend" />
        <activity android:name=".adminUpdatePositive" />
        <activity android:name=".adminUpdatePositiveSend" />
        <activity android:name=".PositiveList" />
        <activity android:name=".StoryList" />
    </application>

</manifest>

And the following are the details of the Logcat file of my project.

11-05 22:29:07.729 28184-28226/? I/FA: App measurement is starting up, version: 11910
To enable debug logging run: adb shell setprop log.tag.FA VERBOSE
11-05 22:29:07.730 28184-28226/? I/FA: To enable faster debug mode event logging run:
      adb shell setprop debug.firebase.analytics.app com.nis.app
11-05 22:30:54.533 28685-28821/? I/FA: App measurement is starting up, version: 12848
11-05 22:30:54.534 28685-28821/? I/FA: To enable debug logging run: adb shell setprop log.tag.FA VERBOSE
    To enable faster debug mode event logging run:
      adb shell setprop debug.firebase.analytics.app com.google.android.googlequicksearchbox
11-05 22:38:28.444 29535-29550/? I/FA: App measurement is starting up, version: 13001
11-05 22:38:28.451 29535-29550/? I/FA: To enable debug logging run: adb shell setprop log.tag.FA VERBOSE
    To enable faster debug mode event logging run:
      adb shell setprop debug.firebase.analytics.app de.motain.iliga
11-05 22:38:29.098 29535-29550/? I/FA: Tag Manager is not found and thus will not be used

Error in the console:

  Android resource linking failed
G:\Project\Ongoing and Done\Aviaitions\RU01_Android_SDK_2.4\Demo\Android Studio\Skanda\app\build\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\com\example\lenovo\skanda\R.java: error: invalid symbol name 'com.example.lenovo.skanda:id/null'.

Answer 1

You have used initial lunching intent in many activity. This should be in one activity (Which activity will open first).
Remove this from all activity except for one activity.

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

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

Suppose you need to open OnBoardActivity first then only this activity have this intent filter. From other activity, the intent filter will be removed.

<activity android:name=".OnBoardActivity">
        <intent-filter>
              <action android:name="android.intent.action.MAIN" />

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