问题描述
<?xml version='1.0' encoding='utf-8'?><manifest xmlns:android='http://schemas.android.com/apk/res/android' package='com.ucloud.uvod.example' android:installLocation='internalOnly' > <applicationandroid:allowBackup='true'android:icon='@mipmap/ic_launcher'android:label='@string/app_name'android:theme='@style/BlueTheme' ><activity android:name='com.ucloud.uvod.example.MainActivity' android:label='@string/app_name' android:launchMode='singleTask' android:theme='@style/BlueTheme' android:screenOrientation='sensor' > <intent-filter><action android:name='android.intent.action.MAIN' /><category android:name='android.intent.category.LAUNCHER' /> </intent-filter></activity><activity android:name='com.ucloud.uvod.example.impl.UEasyPlayerActivity' android:configChanges='keyboardHidden|orientation|screenSize' android:label='@string/app_name' android:launchMode='singleTask' android:screenOrientation='sensor' android:theme='@style/FullscreenTheme' > <intent-filter><action android:name='ucloud.intent.action.uvod.example.easyplayer' /><category android:name='android.intent.category.DEFAULT' /> </intent-filter> <intent-filter><action android:name='android.intent.action.VIEW' /><category android:name='android.intent.category.DEFAULT' /><data android:mimeType='video/*' /><data android:mimeType='audio/*' /><data android:scheme='http' /><data android:scheme='file' /> </intent-filter></activity><activity android:name='com.ucloud.uvod.example.impl.UVideoViewActivity' android:configChanges='keyboardHidden|orientation|screenSize' android:label='@string/app_name' android:launchMode='singleTask' android:screenOrientation='sensor' android:theme='@style/FullscreenTheme' > <intent-filter><action android:name='ucloud.intent.action.uvod.example.uvideoview' /><category android:name='android.intent.category.DEFAULT' /> </intent-filter></activity><activityandroid:name='com.ucloud.uvod.example.permission.PermissionsActivity'android:screenOrientation='portrait'android:launchMode='singleTask'android:theme='@style/BlueTheme'/> </application></manifest>
如果Activity里面配置了
<intent-filter><action android:name='android.intent.action.MAIN' /><category android:name='android.intent.category.LAUNCHER' /> </intent-filter>
就是程序的入口吗？
问题解答
回答1：是的。
///MAIN表示是主入口<action android:name='android.intent.action.MAIN' />///LAUNCHER表示桌面显示的icon对应的Activity<category android:name='android.intent.category.LAUNCHER' />
MAIN 和 LAUNCHER 可以同时设置给多个Activity。但是 MAIN 只对在manifast里面声明位置最靠上的那个Activity起作用；LAUNCHER 则对所有设置了的Activity起作用，也就是说你在桌面上会看到多个icon。
