java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.messaging/com.android.messaging.ui.conversationlist.ConversationListActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.

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Create an empty public constructor in your code.

Solutions on the web

via JIRA by Ilya, 1 year ago
Unable to start activity ComponentInfo{com.android.messaging/com.android.messaging.ui.conversationlist.ConversationListActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
via GitHub by BasanthVerma
, 1 year ago
Unable to start activity ComponentInfo{com.beyondseek.ServicesAroundMe/com.vistrav.ask.AskActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
via GitHub by cuc-glf
, 1 year ago
Unable to start activity ComponentInfo{net.wequick.example.small/net.wequick.example.small.app.main.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
via Stack Overflow by Suraz Adhikari
, 1 month ago
Unable to start activity ComponentInfo{com.ati.activate/com.ati.activate.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
via GitHub by KiWiLss
, 1 month ago
Unable to start activity ComponentInfo{com.example.yhao.fixedfloatwindow/com.example.fixedfloatwindow.FixedFloatActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
via GitHub by WayJ
, 1 year ago
Unable to start activity ComponentInfo{com.example.mysmall/com.example.mysmall.app.main.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.messaging/com.android.messaging.ui.conversationlist.ConversationListActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2450)

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