android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="15dp"
tools:context="com.zpx.contact.MainActivity">
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/fab"
android:layout_margin="20dp"
android:layout_gravity="bottom|end"
android:background="@color/colorPrimaryDark"
android:backgroundTint="#d2cece"
android:src="@drawable/img_add"
app:elevation="150dp"/>
<ListView
android:id="@+id/lv_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="20sp"/>
</FrameLayout>
Add_contact:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/activity_main"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
android:padding="8dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="添加联系人"
android:gravity="center"
android:textColor="#000000"
android:textSize="20sp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
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