android–java.lang.NoClassDefFoundErrorretrofit2.Utils

我正在使用Retrofit来处理来自Mobile的Serverside数据.实施改造后,我得到以下例外.

我究竟做错了什么？

com.name.App_idea W/System.err: java.lang.NoClassDefFoundError:

retrofit2.Utils

at retrofit2.Retrofit$Builder.baseUrl(Retrofit.java:434)

at com.name.App_idea.utils.Idea.onCreate(Idea.java:103)

at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1007)

at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4541)

at android.app.ActivityThread.access$1500(ActivityThread.java:151)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1381)

at android.os.Handler.dispatchMessage(Handler.java:110)

at android.os.Looper.loop(Looper.java:193)

at android.app.ActivityThread.main(ActivityThread.java:5292)

at java.lang.reflect.Method.invokeNative(Native Method)

at java.lang.reflect.Method.invoke(Method.java:515)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)

at dalvik.system.NativeStart.main(Native Method)

改造初始

mRetrofit = new Retrofit.Builder() .baseUrl(AppConstance.APP_URL) .addConverterFactory(ScalarsConverterFactory.create()) .addConverterFactory(GsonConverterFactory.create()) .client(getOkHttpClient()) .build();


Gradle文件

apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '23.0.3'
defaultConfig {
applicationId "com.name.App_idea"
minSdkVersion 14
targetSdkVersion 23
versionCode 1
versionName "9"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.squareup.retrofit2:retrofit:2.0.2'
compile 'com.squareup.retrofit2:converter-scalars:2.0.0'
compile 'com.google.code.gson:gson:2.2.4'
compile 'com.squareup.retrofit2:converter-gson:2.0.0'
compile 'com.jakewharton:butterknife:7.0.1'
compile 'com.android.support:design:23.3.0'
compile 'com.android.support:cardview-v7:23.3.0'
compile 'com.google.android.gms:play-services:8.4.0'
compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.squareup.okhttp3:okhttp-urlconnection:3.2.0'
compile 'com.android.support:support-v4:23.3.0'
}


应用类

import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.Environment;
import android.support.multidex.MultiDex;
import android.util.Log;
import java.io.File;
import java.security.cert.CertificateException;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import okhttp3.OkHttpClient;
import retrofit2.Retrofit;
import retrofit2.converter.scalars.ScalarsConverterFactory;
import retrofit2.converter.gson.GsonConverterFactory;
public class Idea extends Application {
public static Retrofit mRetrofit;
public static IdeaService Iservice;
public static LoginResponceModel loinResponce;
public static SettingsModel settingModel;
public static LocationModel location = new LocationModel();
private static SQLiteDatabase dbase;
private static String FILE_PATH;
public static SQLiteDatabase getDataBase() {
return dbase;
}
public static String getFilePath() {
return FILE_PATH;
}
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, "App", null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(AppConstance.DbConstans.tblLogin);
Log.i("DB", "Created");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
onCreate(db);
}
}
public static void deleteAllTables() {
getDataBase().execSQL("DELETE FROM login");
}
@Override
public void onCreate() {
super.onCreate();
try {
mRetrofit = new Retrofit.Builder() .baseUrl(AppConstance.APP_URL) .addConverterFactory(ScalarsConverterFactory.create()) .addConverterFactory(GsonConverterFactory.create()) .client(getOkHttpClient()) .build();
Iservice = mRetrofit.create(IdeaService.class);
MultiDex.install(this);
DatabaseHelper dbHelper = new DatabaseHelper(this);
dbase = dbHelper.getWritableDatabase();
AppDataService appDataService = new AppDataService();
loinRespOnce= appDataService.getLoginDetails();
settingModel = appDataService.getSettings();
FILE_PATH = getAppFilePath();
startService(new Intent(Idea.this, LocationTracker.class));
} catch (Exception e) {
e.printStackTrace();
}
}
public String combineFilePath(String path1, String path2) {
File file1 = new File(path1);
File file2 = new File(file1, path2);
return file2.getPath();
}
public String getAppFilePath() {
String dsPath;
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
dsPath = combineFilePath(Environment .getExternalStorageDirectory().getAbsolutePath(), "android/data/Idea/");
else
dsPath = this.getDir( this.getPackageName(), 0).getAbsolutePath();
new File(dsPath).mkdirs();
return dsPath;
}
private OkHttpClient getOkHttpClient() {
try {
// Create a trust manager that does not validate certificate chains
final TrustManager[] trustAllCerts = new TrustManager[]{ new X509TrustManager() { @Override public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException { } @Override public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException { } @Override public java.security.cert.X509Certificate[] getAcceptedIssuers() { return new java.security.cert.X509Certificate[]{}; } }
};
// Install the all-trusting trust manager
final SSLContext sslCOntext= SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting manager
final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory);
builder.hostnameVerifier(new HostnameVerifier() {@Overridepublic boolean verify(String hostname, SSLSession session) { return true;}
});
OkHttpClient okHttpClient = builder.build();
return okHttpClient;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}


解决方法:

这是Gradle bulid配置问题我也有同样的问题

在Gradle你的使用

compile 'com.google.android.gms:play-services:8.4.0'


Enire Google Playservice Lib可以更改您的项目中使用的lib

例

com.google.android.gms:play-services-gcm:8.4.0
com.google.android.gms:play-services-maps:8.4.0
com.google.android.gms:play-services-auth:8.4.0


请参阅此URl https://developers.google.com/android/guides/setup#add_google_play_services_to_your_project