NoClassDefFoundError Exception android joda time

问题

I am building an application and using Joda Time in it instead java built in Date/Time classes. but i am facing a problem that when i compile the app using Android API 22 it runs fine, but when i compile it with android API 23 it throws NoClassDefFoundError exception. My build.gradle is following

apply plugin: 'com.android.application'
android {
    compileSdkVersion 23
    buildToolsVersion '23.0.2'
    defaultConfig {
    multiDexEnabled true
    applicationId 'com.my.app'
    minSdkVersion 11
    targetSdkVersion 23
    versionCode 6
    versionName '5.0.1'
    }
    buildTypes {
        release {
        //runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    productFlavors {
    }
    sourceSets {
        main {
            assets.srcDirs = ['src/main/assets', 'src/main/assets/downloadMusicMishari', 'src/main/assets/downloadmusicSaad']
        }
    }
    dexOptions {
        incremental true
        javaMaxHeapSize "4g"
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
}
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    //compile 'com.android.support:support-v4:20.0.0'
    compile project(':facebook')
    compile project(':library')
    compile files('libs/PayPalAndroidSDK-2.9.10.jar')
    compile files('libs/picasso-2.5.2.jar')
    compile project(':justifiedTextViewmaster')
    compile 'joda-time:joda-time:2.3'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.google.android.gms:play-services:8.3.0'
    compile 'com.android.support:multidex:1.0.0'
}

repositories {
    mavenCentral()
}

and here is the screen shot of error.

回答1:

NoClassDefFoundError

Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.

Please check Joda-Time library with Android specialization

Try with:

dependencies {
    compile 'net.danlew:android.joda:2.9.2' // For API Level 23 or Above
}

Then Clean-Rebuild Your IDE

Edit

make sure you initialize JodaTimeAndroid.init(this);

Once that's done, you must initialize the library before using it by calling JodaTimeAndroid.init(). I suggest putting this code in Application.onCreate():

public class YourApplicationClass extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        JodaTimeAndroid.init(this);
    }
}

Final Edit

Removed Joda plugin

回答2:

NoClassDefFoundError

is thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.

The searched-for class definition existed when the currently executing class was compiled, but the definition can no longer be found.

[See This]

So consider using a JODA library that is specifically designed for Android. You may ask why use this library instead of the other. There is one particular problem with the other. ie due to its usage of ClassLoader.getResourceAsStream(), it greatly inflates its memory footprint on apps. (For more details, see this blog post.) This library avoids the problem for Android.

Also this library has extra utilities designed for Android. For example, see DateUtils, a port of Android's DateUtils.

Try changing compile 'joda-time:joda-time:2.3'

to: compile 'net.danlew:android.joda:2.9.1'

This works well. And I am using this in an app with SDK 23!

EDIT 1

If it's ISO8601 format, then you can parse it even without using Joda. This way:

try {
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
        Date result = format.parse("2015-05-19T04:00:00.000Z");
        Calendar cal = Calendar.getInstance();
        cal.setTime(result);
        int year = cal.get(Calendar.YEAR);
        int month = cal.get(Calendar.MONTH);
        int day = cal.get(Calendar.DAY_OF_MONTH);
        output = day+" "+month+" "+year;
        Log.w("THE DATE IS:",""+output);
    }
    catch (Exception e){e.printStackTrace();}

来源：https://stackoverflow.com/questions/35865127/noclassdeffounderror-exception-android-joda-time

标签

java

android

jodatime