java.lang.NoClassDefFoundError:failed resolution of :Lorg/apache/http/ProtocolVersion

问题

I \'ve met such error when I use Android studio 3.1 to build an Android P \'s app, the apk can be made ,but when I use it on Android P emulator , it will crash and throw below info, more details see the pic.

java.lang.NoClassDefFoundError:failed resolution of :Lorg/apache/http/ProtocolVersion

part of my build.gradle under App module is below , anybody meet this ?And give some suggesstion ? Many thanks.

android {

     compileSdkVersion \'android-P\'
     buildToolsVersion \'28-rc1\'

    useLibrary \'org.apache.http.legacy\'

    //for Lambda
    compileOptions {
        targetCompatibility JavaVersion.VERSION_1_8
        sourceCompatibility JavaVersion.VERSION_1_8
    }

    packagingOptions {

        exclude \'META-INF/LICENSE\'
        exclude \'META-INF/NOTICE\'
    }
    defaultConfig {
        applicationId \"xxx.xxx.xxx\"
        minSdkVersion 17
        targetSdkVersion 27
        versionCode xxxx
        versionName \"Vx.x.x\"

        multiDexEnabled true


     //other setting required
        ndk {

            abiFilters \'armeabi\', \'armeabi-v7a\', \'armeabi-v8a\', \'x86\', \'x86_64\', \'mips\', \'mips64\'

        }

回答1:

Update: This is no longer a bug or a workaround, it is required if your app targets API Level 28 (Android 9.0) or above and uses the Google Maps SDK for Android 16.0.0 or below (or if your app uses the Apache HTTP Legacy library). It is now included in the official docs. The public issue has been closed as intended behavior.

This is a bug on the Google Play Services side, until it's fixed, you should be able to workaround by adding this to your AndroidManifest.xml inside the <application> tag:

<uses-library android:name="org.apache.http.legacy" android:required="false" />

回答2:

This link android-9.0-changes-28-->Apache HTTP client deprecation explains reason for adding the following to your AndroidManifest.xml:

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

With Android 6.0, we removed support for the Apache HTTP client. Beginning with Android 9, that library is removed from the bootclasspath and is not available to apps by default.

回答3:

Do any of the following:

1- Update the play-services-maps library to the latest version:

com.google.android.gms:play-services-maps:16.1.0

2- Or include the following declaration within the <application> element of AndroidManifest.xml.

<uses-library
      android:name="org.apache.http.legacy"
      android:required="false" />

回答4:

It's also reported on Android bug tracker: https://issuetracker.google.com/issues/79478779

回答5:

To run org.apache.http.legacy perfectely in Android 9.0 Pie create an xml file res/xml/network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
    <network-security-config>
      <base-config cleartextTrafficPermitted="true">
       <trust-anchors>
        <certificates src="system" />
       </trust-anchors>
      </base-config>
    </network-security-config>

And add 2 tags tag in your AndroidManifest.xml

android:networkSecurityConfig="@xml/network_security_config" android:name="org.apache.http.legacy"

<?xml version="1.0" encoding="utf-8"?>
 <manifest......>
  <application android:networkSecurityConfig="@xml/network_security_config">
   <activity..../> 
   ......
   ......
 <uses-library
        android:name="org.apache.http.legacy"
        android:required="false"/>
</application>

Also add useLibrary 'org.apache.http.legacy' in your app build gradle

android {
compileSdkVersion 28
defaultConfig {
    applicationId "your application id"
    minSdkVersion 15
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    useLibrary 'org.apache.http.legacy'
}

回答6:

If You using Android 9.0 with legacy jar than you have to use. in your mainfest file.

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

回答7:

If you are using com.google.android.gms:play-services-maps:16.0.0 or below and your app is targeting API level 28 (Android 9.0) or above, you must include the following declaration within the element of AndroidManifest.xml.

<uses-library
      android:name="org.apache.http.legacy"
      android:required="false" />

This is handled for you if you are using com.google.android.gms:play-services-maps:16.1.0 and is not necessary if your app is targeting a lower API level.

回答8:

According to this SO answer, it occurs due to an AWS SDK bug that appears to be solved in version 2.6.30 of the SDK, so updating the version to a newer, can help you fixing the problem.

回答9:

In react native, I had the error not show maps and close app, run adb logcat and show error within console:

java.lang.NoClassDefFoundError:failed resolution of :Lorg/apache/http/ProtocolVersion

fix it by adding within androidManifest.xml

<uses-library
  android:name="org.apache.http.legacy"
  android:required="false" />

来源：https://stackoverflow.com/questions/50461881/java-lang-noclassdeffounderrorfailed-resolution-of-lorg-apache-http-protocolve