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android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/logid_text"
android:layout_centerHorizontal="true"
android:layout_weight="1"
android:onClick="onClicklogin"
android:text=" OK "

android:textAppearance="@style/TextAppearance.AppCompat.Display1"
android:textSize="36sp" />

</LinearLayout>
</LinearLayout>
</RelativeLayout>

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2.res-layout
A. activity_login.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="kr.icehs.intec.management.LoginActivity"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">

<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="152dp"
android:layout_weight="1"
android:src="@drawable/icon" />
</LinearLayout>

<LinearLayout
android:layout_width="match_parent"

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