Add AuthenticationLoginFragment.kt

app/src/main/java/chat/rocket/android/app/AuthenticationLoginFragment.kt

+package chat.rocket.android.app
+
+import DrawableHelper
+import android.app.Fragment
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import chat.rocket.android.R
+import kotlinx.android.synthetic.main.fragment_authentication_log_in.*
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+class AuthenticationLoginFragment : Fragment() {
+
+    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_log_in, container, false)
+
+    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            tintEditTextDrawableStart()
+        }
+    }
+
+    private fun tintEditTextDrawableStart() {
+        val context = activity.applicationContext
+
+        val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, context)
+        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, context)
+
+        val drawables = arrayOf(personDrawable, lockDrawable)
+        DrawableHelper.wrapDrawables(drawables)
+        DrawableHelper.tintDrawables(drawables, context, R.color.colorDrawableTintGrey)
+        DrawableHelper.compoundDrawables(arrayOf(text_username, text_password), drawables)
+    }
+}
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