CODEWITHSUNDEEP
androidandroid-activityclassnotfoundexceptionwear-os
Tyler
Tyler

Reputation: 19868

Unable to start activity of embedded Wear App, on Wear device

When I push the APK onto the phone with an embedded Wear App, and then go to Start..., then try to run my application, it crashes on the watch. The Exception is a ClassNotFoundException.

09-18 14:53:17.678: E/AndroidRuntime(2391): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.myapp/com.myapp.WearActivity}: java.lang.ClassNotFoundException: Didn't find class "com.myapp.WearActivity" on path: DexPathList[[zip file "/data/app/com.myapp-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.myapp-1, /vendor/lib, /system/lib]]

I have declared this Activity in my wearable AndroidManifest.xml file.

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.DeviceDefault" >

   <activity
        android:name=".WearActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

I have also double checked that the package name aligns with whats declared above, and it does.

In the build.gradle file for the wearable module, I have proguard turned off

buildTypes {
    release {
        runProguard false
        signingConfig signingConfigs.release
    }
}

Really not sure what else would be preventing the OS from finding the Activity. Any ideas?

Upvotes: 0

Views: 688

Answers (1)

Tyler
Tyler

Reputation: 19868

It turns out that the following build.gradle entries were conflicting.

Mobile

compile 'com.google.android.gms:play-services:+'
compile 'com.android.support:support-v4:20.0.0'
compile 'com.android.support:appcompat-v7:20.0.0'

Wear

compile 'com.google.android.support:wearable:+'
compile 'com.google.android.gms:play-services-wearable:+'

By explicitly declaring the version numbers, the issue went away.

Mobile

compile 'com.google.android.gms:play-services:5.0.77'
compile 'com.android.support:support-v4:20.0.0'
compile 'com.android.support:appcompat-v7:20.0.0'

Wear

compile 'com.google.android.support:wearable:1.0.0'
compile 'com.google.android.gms:play-services-wearable:5.0.77'

Upvotes: 1

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