feat : kotlinize crash quickstart

auth/app/src/main/java/com/google/firebase/quickstart/auth/EntryChoiceActivity.kt

@@ -3,7 +3,6 @@ package com.google.firebase.quickstart.auth
 import android.content.Intent
 import com.firebase.example.internal.BaseEntryChoiceActivity
 import com.firebase.example.internal.Choice
-import com.google.android.gms.common.util.CollectionUtils.listOf
 import com.google.firebase.quickstart.auth.java.ChooserActivity
 
 class EntryChoiceActivity : BaseEntryChoiceActivity() {

crash/app/build.gradle

@@ -1,4 +1,6 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 apply plugin: 'io.fabric'
 
 check.dependsOn 'assembleDebugAndroidTest'
@@ -33,6 +35,7 @@ configurations.all {
 }
 
 dependencies {
+    implementation project(':internal')
     implementation 'com.android.support:support-v4:27.1.1'
     implementation 'com.android.support:appcompat-v7:27.1.1'
 
@@ -43,6 +46,7 @@ dependencies {
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
     androidTestImplementation 'com.android.support.test:rules:1.0.2'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }
 
 apply plugin: 'com.google.gms.google-services'

crash/app/src/androidTest/java/com/google/samples/quickstart/crash/MainActivityTest.java

@@ -7,6 +7,8 @@
 import android.test.suitebuilder.annotation.LargeTest;
 import android.widget.CheckBox;
 
+import com.google.samples.quickstart.crash.java.MainActivity;
+
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;

crash/app/src/main/AndroidManifest.xml

@@ -20,13 +20,16 @@ specific language governing permissions and limitations under the License.
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".EntryChoiceActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name=".java.MainActivity" />
+        <activity android:name=".kotlin.MainActivity" />
+
     </application>
 
 </manifest>

crash/app/src/main/java/com/google/samples/quickstart/crash/EntryChoiceActivity.kt

@@ -0,0 +1,24 @@
+package com.google.samples.quickstart.crash
+
+import android.content.Intent
+import com.firebase.example.internal.BaseEntryChoiceActivity
+import com.firebase.example.internal.Choice
+import com.google.android.gms.common.util.CollectionUtils.listOf
+import com.google.samples.quickstart.crash.java.MainActivity
+
+class EntryChoiceActivity : BaseEntryChoiceActivity() {
+
+    override fun getChoices(): List<Choice> {
+        return listOf(
+                Choice(
+                        "Java",
+                        "Run the Firebase Crash quickstart written in Java.",
+                        Intent(this, MainActivity::class.java)),
+                Choice(
+                        "Kotlin",
+                        "Run the Firebase Crash quickstart written in Kotlin.",
+                        Intent(this, com.google.samples.quickstart.crash.kotlin.MainActivity::class.java))
+        )
+    }
+
+}

crash/app/src/main/java/com/google/samples/quickstart/crash/MainActivity.java → crash/app/src/main/java/com/google/samples/quickstart/crash/java/MainActivity.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.google.samples.quickstart.crash;
+package com.google.samples.quickstart.crash.java;
 
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
@@ -24,6 +24,7 @@
 import android.widget.CheckBox;
 
 import com.crashlytics.android.Crashlytics;
+import com.google.samples.quickstart.crash.R;
 
 /**
  * This Activity shows the different ways of reporting application crashes.

crash/app/src/main/java/com/google/samples/quickstart/crash/kotlin/MainActivity.kt

@@ -0,0 +1,75 @@
+package com.google.samples.quickstart.crash.kotlin
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.util.Log
+import com.crashlytics.android.Crashlytics
+import com.google.samples.quickstart.crash.R
+import kotlinx.android.synthetic.main.activity_main.*
+
+/**
+ * This Activity shows the different ways of reporting application crashes.
+ * - Report non-fatal exceptions that are caught by your app.
+ * - Automatically Report uncaught crashes.
+ *
+ * It also shows how to add log messages to crash reports using log().
+ *
+ * Check https://console.firebase.google.com to view and analyze your crash reports.
+ *
+ * Check https://firebase.google.com/docs/crashlytics for more information on Firebase Crashlytics.
+ */
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        // Log the onCreate event, this will also be printed in logcat
+        Crashlytics.log(Log.VERBOSE, TAG, "onCreate")
+
+        // Add some custom values and identifiers to be included in crash reports
+        Crashlytics.setInt("MeaningOfLife", 42)
+        Crashlytics.setString("LastUIAction", "Test value")
+        Crashlytics.setUserIdentifier("123456789")
+
+        // Report a non-fatal exception, for demonstration purposes
+        Crashlytics.logException(Exception("Non-fatal exception: something went wrong!"))
+
+        // Checkbox to indicate when to catch the thrown exception.
+        val catchCrashCheckBox = catchCrashCheckBox
+
+        // Button that causes NullPointerException to be thrown.
+        val crashButton = crashButton
+        crashButton.setOnClickListener {
+            // Log that crash button was clicked.
+            Crashlytics.log(Log.INFO, TAG, "Crash button clicked.")
+
+            // If catchCrashCheckBox is checked catch the exception and report is using
+            // logException(), Otherwise throw the exception and let Crashlytics automatically
+            // report the crash.
+            if (catchCrashCheckBox.isChecked) {
+                try {
+                    throw NullPointerException()
+                } catch (ex: NullPointerException) {
+                    // [START crashlytics_log_and_report]
+                    Crashlytics.log(Log.ERROR, TAG, "NPE caught!")
+                    Crashlytics.logException(ex)
+                    // [END crashlytics_log_and_report]
+                }
+
+            } else {
+                throw NullPointerException()
+            }
+        }
+
+        // Log that the Activity was created.
+        // [START crashlytics_log_event]
+        Crashlytics.log("Activity created")
+        // [END crashlytics_log_event]
+    }
+
+    companion object {
+
+        private val TAG = "MainActivity"
+    }
+}

crash/app/src/main/res/layout/activity_main.xml

@@ -18,7 +18,7 @@ specific language governing permissions and limitations under the License.
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
-    tools:context="com.google.samples.quickstart.crash.MainActivity">
+    tools:context="com.google.samples.quickstart.crash.java.MainActivity">
 
     <ImageView
         android:id="@+id/icon"