Android 开发问题：Unable to find explicit activity class

IntentintentnewIntent(getActivity(),Test2Activity.class);startActivity(intent);在 Android 开发中执行上述代码进行页面跳转时出现如下错误信息FATAL EXCEPTION: main Process: com.my.navigation, PID: 27544 android.content.ActivityNotFoundException: Unable to find explicit activity class {com.my.navigation/com.my.navigation.Test2Activity}; have you declared this activity in your AndroidManifest.xml?# 解读 android.content.ActivityNotFoundException找不到显式活动类 {com.my.navigation/com.my.navigation.Test2Activity} 您是否已在 AndroidManifest.xml 中声明此活动问题原因这个错误的根本原因是没有在 AndroidManifest.xml 文件中声明 Test2Activity处理策略在 AndroidManifest.xml 文件中添加缺失的 Activity 声明application...activityandroid:name.Test2Activityandroid:exportedfalse/activity/application