Adds dragging left to finish activity.

app/build.gradle

@@ -105,6 +105,8 @@ dependencies {
 
     implementation libraries.aVLoadingIndicatorView
 
+    implementation libraries.swipeBackLayout
+
     implementation('com.crashlytics.sdk.android:crashlytics:2.6.8@aar') {
         transitive = true
     }

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomActivity.kt

@@ -13,6 +13,8 @@ import dagger.android.AndroidInjector
 import dagger.android.DispatchingAndroidInjector
 import dagger.android.support.HasSupportFragmentInjector
 import kotlinx.android.synthetic.main.app_bar_chat_room.*
+import me.imid.swipebacklayout.lib.SwipeBackLayout
+import me.imid.swipebacklayout.lib.app.SwipeBackActivity
 import javax.inject.Inject
 
 
@@ -30,7 +32,7 @@ private const val INTENT_CHAT_ROOM_NAME = "chat_room_name"
 private const val INTENT_CHAT_ROOM_TYPE = "chat_room_type"
 private const val INTENT_IS_CHAT_ROOM_READ_ONLY = "is_chat_room_read_only"
 
-class ChatRoomActivity : AppCompatActivity(), HasSupportFragmentInjector {
+class ChatRoomActivity : SwipeBackActivity(), HasSupportFragmentInjector {
     @Inject lateinit var fragmentDispatchingAndroidInjector: DispatchingAndroidInjector<Fragment>
     private lateinit var chatRoomId: String
     private lateinit var chatRoomName: String
@@ -54,6 +56,8 @@ class ChatRoomActivity : AppCompatActivity(), HasSupportFragmentInjector {
         isChatRoomReadOnly = intent.getBooleanExtra(INTENT_IS_CHAT_ROOM_READ_ONLY, true)
         requireNotNull(chatRoomType) { "no is_chat_room_read_only provided in Intent extras" }
 
+        swipeBackLayout.setEdgeTrackingEnabled(SwipeBackLayout.EDGE_LEFT)
+
         setupToolbar(chatRoomName)
 
         addFragment("ChatRoomFragment", R.id.fragment_container) {

dependencies.gradle

@@ -29,6 +29,7 @@ ext {
         markwon                : '1.0.3',
         sheetMenu              : '1.3.3',
         aVLoadingIndicatorView : '2.1.3',
+        swipeBackLayout        : '1.1.0',
 
         // For testing
         junit                  : '4.12',
@@ -91,6 +92,8 @@ ext {
 
         aVLoadingIndicatorView : "com.wang.avi:library:${versions.aVLoadingIndicatorView}",
 
+        swipeBackLayout        : "me.imid.swipebacklayout.lib:library:${versions.swipeBackLayout}",
+
         // For testing
         junit         : "junit:junit:$versions.junit",
         expressoCore  : "com.android.support.test.espresso:espresso-core:${versions.expresso}",