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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) |
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