88 android : layout_height =" match_parent"
99 tools : context =" .MainActivity" >
1010
11+ <com .google.android.material.appbar.AppBarLayout
12+ android : id =" @+id/app_bar"
13+ android : layout_width =" 0dp"
14+ android : layout_height =" wrap_content"
15+ android : background =" ?attr/colorPrimary"
16+ app : layout_constraintTop_toTopOf =" parent"
17+ app : layout_constraintStart_toStartOf =" parent"
18+ app : layout_constraintEnd_toEndOf =" parent" >
19+
20+ <com .google.android.material.appbar.MaterialToolbar
21+ android : id =" @+id/toolbar"
22+ style =" @style/Widget.MaterialComponents.Toolbar"
23+ android : layout_width =" match_parent"
24+ android : layout_height =" wrap_content"
25+ android : background =" ?attr/colorPrimary"
26+ app : titleTextColor =" @android:color/white"
27+ app : navigationIconTint =" @android:color/white" />
28+
29+ </com .google.android.material.appbar.AppBarLayout>
30+
1131 <TextView
1232 android : id =" @+id/tvOutput"
1333 android : layout_width =" 0dp"
2242 app : layout_constraintLeft_toLeftOf =" parent"
2343 app : layout_constraintRight_toRightOf =" parent"
2444 app : layout_constraintStart_toStartOf =" parent"
25- app : layout_constraintTop_toTopOf = " parent " />
45+ app : layout_constraintTop_toBottomOf = " @id/app_bar " />
2646
2747 <Button
2848 android : id =" @+id/btEnter"
4969 app : layout_constraintStart_toStartOf =" parent"
5070 android : imeOptions =" actionSend" />
5171
52- </androidx .constraintlayout.widget.ConstraintLayout>
72+ </androidx .constraintlayout.widget.ConstraintLayout>
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