java.lang.SecurityException: Permission denied (missing INTERNET permission?) 해결방법

안드로이드 앱 개발 중 네트워크를 사용하다보면 아래처럼 구체적으로 permission에러가 발생하는 경우가 발생한다.

이럴때는 AndroidManifest.xml에 퍼미션 한줄만 추가하면 문제가 해결된다.

 

1. 에러 원인

  -. 인터넷을 사용하는 퍼미션없이 앱에서 인터넷 사용 요청을 할 경우 안드로이드 OS에서 거부하게된다.

 

2. 해결 방법

  -. AndroidManifest.xml파일을 열어 아래 파란색처럼 한 줄 추가해준다.

<uses-permission android:name="android.permission.INTERNET"/>

 

3. 에러문구

Error log

FATAL EXCEPTION: Thread-4 Process: com.picker.testapp, PID: 6624 java.lang.SecurityException: Permission denied (missing INTERNET permission?) at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:150) at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103) at java.net.InetAddress.getAllByName(InetAddress.java:1152) at com.android.okhttp.Dns$1.lookup(Dns.java:41) at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:178) at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:144) at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:86) at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:176) at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128) at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97) at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289) at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232) at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465) at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411) at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542) at com.picker.testapp.MainActivity.sendGet(MainActivity.kt:32) at com.picker.testapp.MainActivity$ThreadClass.run(MainActivity.kt:22) Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname) at libcore.io.Linux.android_getaddrinfo(Native Method) at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:73) at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:202) at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:73) at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135) at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)  at java.net.InetAddress.getAllByName(InetAddress.java:1152)  at com.android.okhttp.Dns$1.lookup(Dns.java:41)  at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:178)  at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:144)  at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:86)  at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:176)  at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128)  at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)  at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)  at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542)  at com.picker.testapp.MainActivity.sendGet(MainActivity.kt:32)  at com.picker.testapp.MainActivity$ThreadClass.run(MainActivity.kt:22)  Caused by: android.system.ErrnoException: android_getaddrinfo failed: EPERM (Operation not permitted) at libcore.io.Linux.android_getaddrinfo(Native Method)  at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:73)  at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:202)  at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:73)  at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135)  at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)  at java.net.InetAddress.getAllByName(InetAddress.java:1152)  at com.android.okhttp.Dns$1.lookup(Dns.java:41)  at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:178)  at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:144)  at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:86)  at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:176)  at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128)  at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)  at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)  at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542)  at com.picker.testapp.MainActivity.sendGet(MainActivity.kt:32)  at com.picker.testapp.MainActivity$ThreadClass.run(MainActivity.kt:22)