Android Question Dex merg error defined multiple times

Hosein_Mghr said:

I use a special library called Dexter

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Why? What it does?

Get access permissions With Dexter

Erel said:

چرا؟ چکار میکند؟

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Can this fix the error?

Hosein_Mghr said:

Get access permissions With Dexter

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Use RuntimePermissions.

Erel said:

Use RuntimePermissions.

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In general, I use different libraries that seem to be old, but they work well, but after adding the Firebasenotifictin library, I still get Dex merg error. What do you suggest to solve this problem?

Correct solution is to remove unneeded libraries and use proper ones.

You can try this:

Maybe add this

The problem is not fixed and I am facing another error again. Do you know what it is?

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... 1 more
Caused by: com.android.tools.r8.internal.f: Type android.support.v4.app.INotificationSideChannel is defined multiple times: c:\android\tools\..\extras\b4a_local\unpacked-core-1.3.2-63740761949541\jars\classes.zip:classes.dex, c:\android\tools\..\extras\b4a_remote\androidx\core\core\1.9.0\unpacked-core-1.9.0\jars\classes.zip:classes.dex
at com.android.tools.r8.internal.YS.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:14)
at com.android.tools.r8.internal.YS.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:22)
at com.android.tools.r8.internal.cN.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:36)
at com.android.tools.r8.internal.cN.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:10)
at java.base/java.util.concurrent.ConcurrentHashMap.merge(ConcurrentHashMap.java:2056)
at com.android.tools.r8.internal.cN.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:6)
at com.android.tools.r8.graph.E2$a.e(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:4)
at com.android.tools.r8.dex.b.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:105)
at com.android.tools.r8.dex.b.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:28)
at com.android.tools.r8.D8.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:25)
at com.android.tools.r8.D8.d(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:609)
at com.android.tools.r8.D8.c(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:1)
at com.android.tools.r8.internal.vj.a(R8_3.3.20-dev+aosp1_dd4c01853fd917497aef2d09abff533f0d25b062517ea74449d40e1778a34753:24)
... 5 more

You are wasting your time. Remove the libraries that cause the problem and use proper libraries.