android

Android

Android is an open source operating system for mobile and other electronic gadgets including some laptop. The Android operating system software stack consists of Java applications running on a Java based object oriented application framework on top of Java core libraries running on a Dalvik virtual machine featuring JIT compilation. Basics of Android: 1) Open

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Android program SUM of 2 Numbers

Addition of 2 numbers Step 1. in activity_main.xml file copy the following code. <RelativeLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” android:paddingLeft=”@dimen/activity_horizontal_margin” android:paddingRight=”@dimen/activity_horizontal_margin” android:paddingTop=”@dimen/activity_vertical_margin” android:paddingBottom=”@dimen/activity_vertical_margin” tools:context=”.MainActivity”> <TextView android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:text=”Enter First number” android:id=”@+id/t1″ /> <EditText android:layout_width=”103dp” android:layout_height=”wrap_content” android:id=”@+id/n1″ android:layout_alignParentTop=”true” android:layout_centerHorizontal=”true” /> <TextView android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:text=”Enter second number” android:id=”@+id/t2″ android:layout_gravity=”center_vertical” android:layout_below=”@+id/n1″ android:layout_toStartOf=”@+id/n1″ android:layout_marginTop=”39dp” /> <EditText android:layout_width=”92dp” android:layout_height=”wrap_content” android:id=”@+id/n2″ android:layout_gravity=”center_vertical”

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