无法解决以下活动：仪器测试 android 活动时的意图

Question

I'm getting errors when I'm trying to run insturmentation tests on android. I've written an Activity, called AudioPlayerActivity that lies in the package com.mycompany.mobile.android.gui , and now I'm trying to test the GUI of that project and I'm running in the following error:

java.lang.RuntimeException: Unable to resolve activity for: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=com.mycompany.mobile.android.gui/.AudioPlayerActivity }

I have read this question , and followed the advice there, but to no avail. I also googled for the error, but did not find any help.

This is how my AndroidManifest.xml for the test project looks like:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mycompany.mobile.android.gui"
    android:versionCode="1"
    android:versionName="1.0" >

    <instrumentation
        android:name="android.test.InstrumentationTestRunner"
        android:targetPackage="com.mycompany.mobile.android.gui" />
    <application>
        <uses-library android:name="android.test.runner" />
    </application>

    <uses-sdk android:targetSdkVersion="7" />
    <supports-screens android:anyDensity="true" />
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>

And here's my Instrumentation test.

package com.mycompany.mobile.android.gui;

import android.test.ActivityInstrumentationTestCase2;

import com.mycompany.mobile.android.gui.AudioPlayerActivity;

public class TestMusicPlayerActivityTest extends ActivityInstrumentationTestCase2<AudioPlayerActivity> {
    public TestMusicPlayerActivityTest() {
            super("com.mycompany.mobile.android.gui", AudioPlayerActivity.class);
    }

    public TestMusicPlayerActivityTest(String name) {
        super("com.mycompany.mobile.android.gui", AudioPlayerActivity.class);
    }

    public TestMusicPlayerActivityTest(String pkg, Class<AudioPlayerActivity> activityClass) {
        super("com.mycompany.mobile.android.gui", AudioPlayerActivity.class);
    }

    public void testSomething() {
        System.out.println("Nothing works :(");
        System.out.println(getActivity());
    }   
}

We are running the entire process via maven, but that should not be a part of the problem.

The tested Activity, as you can see, also lies in the same package. I don't call the super constructor with the activity's instead of the package name, as most people having this issue do.

For your interest, this is the AndroidManifest.xml describing the tested activity:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mycompany.mobile.android.gui"
    android:versionCode="1"
    android:versionName="1.0" >

    <!-- omitted Uses permission + Uses SDK -->
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:debuggable="true"
        android:theme="@style/NoTitleBar"
    >
    <!-- omitted other activities -->
        <activity 
            android:name="com.mycompany.mobile.android.gui.AudioPlayerActivity"
            android:screenOrientation="portrait" ></activity>
    </application>
</manifest>

I also added the activity to the AndroidManifest.xml, but this didn't change anything. I also tried adding the MAIN/LAUNCHER intent filter for the desired activity, but to this didn't change the outcome of the test. I have tried starting the activity with extras and without them, that also didn't change the outcome.

Answer 1

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.mycompany.mobile.android.gui"
... ...

Are you using the same package name for both your Android project and Android test project? This could be a problem, though I am not sure if it causes your java.lang.RuntimeException.

According to the official dev guide here , Your test project must have a different package name from you tested project:

An Android package name is a unique system name for a .apk file, set by the "android:package" attribute of the element in the package's manifest. The Android package name of your test package must be different from the Android package name of the application under test. By default, Android tools create the test package name by appending ".test" to the package name of the application under test.

Try using package name com.mycompany.mobile.android.gui.test for your test project.

Answer 2

There are two possible solutions.

1. Add activity definition in the android manifest and mark it as exported.

If you forgot to define activity in your android manifest, you would get "Unable to resolve activity error". If you are creating separate test activity in your android test project, create a separate test sub package and create your activity there. After that include it in your android manifest and mark it as exported.

# folder structure
└── src
    └── androidTest
        └── java
            └── com
                └── example
                    └── test
                        └── TestActivity.kt

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.test">
  <application>
     <activity
       android:name=".TestActivity"
       android:exported="true" />
  </application>
</manifest>

By default the android Gradle plugin appends .test to the applicationId and namespace of the test app. So that you need to put all your classes in a separate test package.

2. Change android test namespace and the applicationId .

You can define namespace and applicationId of the test app in module level build.gradle file. Set it to match your test app's package name.

android {
  testNamespace 'com.example.app'
  defaultConfig {
     testApplicationId 'com.example.app'
  }
}

It is recommended to use same values for the namespace and the applicationId . If you use different values, the android Gradle plugin will copy applicationId in place of namespace in the android manifest.

Answer 3

You are running it as an Android Project, try running it as a Android Test Project

adb shell am instrument -e package <java package> -w <test apk package>/android.test.InstrumentationTestRunner