方法 1：（效率最高的）
问开发人员

方法 2：
a、启动待测 apk
b、开启日志输出：adb logcat>D:/log.txt
c、关闭日志输出：ctrl+c
d、查看日志
找寻：Displayed com.mm.android.hsy/.ui.LoginActivity: +3s859ms
appPackage = com.mm.android.hsy
appActivity = .ui.LoginActivity

欢迎补充其他方法

➜  ContactManager git:(master) ✗ aapt dump badging ContactManager.apk
package: name='com.example.android.contactmanager' versionCode='1' versionName='1.0'
sdkVersion:'5'
targetSdkVersion:'5'
uses-permission:'android.permission.GET_ACCOUNTS'
uses-permission:'android.permission.READ_CONTACTS'
uses-permission:'android.permission.WRITE_CONTACTS'
application-label:'Contact Manager'
application-icon-120:'res/drawable-ldpi/icon.png'
application-icon-160:'res/drawable-mdpi/icon.png'
application-icon-240:'res/drawable-hdpi/icon.png'
application: label='Contact Manager' icon='res/drawable-mdpi/icon.png'
application-debuggable
launchable-activity: name='com.example.android.contactmanager.ContactManager'  label='Contact Manager' icon=''
uses-permission:'android.permission.READ_CALL_LOG'
uses-implied-permission:'android.permission.READ_CALL_LOG','targetSdkVersion < 16 and requested READ_CONTACTS'
uses-permission:'android.permission.WRITE_CALL_LOG'
uses-implied-permission:'android.permission.WRITE_CALL_LOG','targetSdkVersion < 16 and requested WRITE_CONTACTS'
uses-feature:'android.hardware.touchscreen'
uses-implied-feature:'android.hardware.touchscreen','assumed you require a touch screen unless explicitly made optional'
main
other-activities
supports-screens: 'small' 'normal' 'large'
supports-any-density: 'true'
locales: '--_--'
densities: '120' '160' '240'