AndroidManifest.xml配置文件里,没配置<intent-filter>。这个是启动应用就会默认启动一个Activity的配置。一般是如下配置
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< activity android:name = ".MainActivity" android:label = "@string/app_name" > < intent-filter > < action android:name = "android.intent.action.MAIN" /> < category android:name = "android.intent.category.LAUNCHER" /> </ intent-filter > </ activity > |