changed main screen to login screen

Author: Wei Yuxin

.idea/caches/build_file_checksums.ser

@@ -26,6 +26,7 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation 'com.google.android.gms:play-services-ads:15.0.1'
 }
 
 apply plugin: 'com.google.gms.google-services'

app/build.gradle

@@ -14,22 +14,5 @@
         tools:layout_editor_absoluteY="252dp"
         tools:ignore="MissingConstraints" />
 
-    <EditText
-        android:id="@+id/editText"
-        android:layout_width="257dp"
-        android:layout_height="wrap_content"
-        android:ems="10"
-        android:inputType="textEmailAddress"
-        tools:layout_editor_absoluteX="64dp"
-        tools:layout_editor_absoluteY="130dp" />
-
-    <EditText
-        android:id="@+id/editText2"
-        android:layout_width="257dp"
-        android:layout_height="wrap_content"
-        android:ems="10"
-        android:inputType="textPassword"
-        tools:layout_editor_absoluteX="64dp"
-        tools:layout_editor_absoluteY="191dp" />
 
 </android.support.constraint.ConstraintLayout>

app/src/main/res/layout/activity_login__screen.xml

@@ -4,15 +4,20 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".Login_Screen">
 
-    <TextView
+
+    <LinearLayout
+        android:layout_width="368dp"
+        android:layout_height="431dp"
+        android:orientation="vertical"
+        tools:layout_editor_absoluteX="8dp"
+        tools:layout_editor_absoluteY="8dp"></LinearLayout>
+
+    <com.google.android.gms.ads.AdView
+        android:id="@+id/adView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
+        tools:layout_editor_absoluteX="32dp"
+        tools:layout_editor_absoluteY="445dp" />
 </android.support.constraint.ConstraintLayout>