title: java.lang.Exception: Custom runner class AndroidJUnit4 should have a public constructor with signature AndroidJUnit4(Class testClass)
body: <p>gradle looks like: </p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 25
      buildToolsVersion "25.0.2"
  
      defaultConfig {
          applicationId "com.google.developer.taskmaker"
          minSdkVersion 19
          targetSdkVersion 25
          versionCode 1
          versionName "1.0"
  
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  configurations.all {
      resolutionStrategy {
          force 'com.android.support:support-annotations:25.2.0'
      }
  }
  
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:appcompat-v7:25.2.0'
      compile 'com.android.support:recyclerview-v7:25.2.0'
      compile 'com.android.support:design:25.2.0'
      compile 'com.android.support:preference-v7:25.2.0'
      debugCompile 'im.dino:dbinspector:3.4.1@aar'
      // Android JUnit Runner
      compile 'com.google.android.gms:play-services-appindexing:8.4.0'
      // Android runner and rules support
  
      // add this for intent mocking support
      androidTestCompile 'com.android.support.test.espresso:espresso-intents:2.2.2'
  
      // add this for webview testing support
      androidTestCompile 'com.android.support.test.espresso:espresso-web:2.2.2'
      compile 'com.android.support.test:runner:0.5'
      compile 'com.android.support.test:rules:0.5'
      compile 'com.android.support.test.espresso:espresso-core:2.2.2'
  }
  </code></pre>
  
  <p>Unit test case looks like</p>
  
  <pre><code>@RunWith(AndroidJUnit4.class)
  public class TestClass {
  
      @Rule
      public ActivityTestRule&lt;MainActivity&gt; mActivityRule =
              new ActivityTestRule&lt;&gt;(MainActivity.class);
  
      @Test
      public void buttonClick(){
          onView(withId(R.id.fab)).perform(click()).check(matches(isDisplayed()));
      }
  
  }
  </code></pre>
  
  <p>Error message looks like:</p>
  
  <pre><code>java.lang.Exception: Custom runner class AndroidJUnit4 should have a public constructor with signature AndroidJUnit4(Class testClass)
  
      at org.junit.runners.model.InitializationError.&lt;init&gt;(InitializationError.java:38)
      at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:111)
      at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
      at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
      at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
      at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
      at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:101)
      at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:87)
      at com.intellij.junit4.JUnit46ClassesRequestBuilder.collectWrappedRunners(JUnit46ClassesRequestBuilder.java:90)
      at com.intellij.junit4.JUnit46ClassesRequestBuilder.getClassesRequest(JUnit46ClassesRequestBuilder.java:51)
      at com.intellij.junit4.JUnit4TestRunnerUtil.buildRequest(JUnit4TestRunnerUtil.java:91)
      at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:95)
      at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
      at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
      at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
  
  
  Process finished with exit code -1
  </code></pre>
  
  <p>I have already check other answers but not getting solution.Please tell where thing goes wrong. When running this code I am getting error               </p>