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How to get the Touch position on an android device using kotlin?
This example demonstrates how to get the Touch position on an android device using kotlin.
Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
Example
<?xml version="1.0" encoding="utf-8"?> <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:padding="8dp" tools:context="MainActivity"> <EditText android:id="@+id/editTextX" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Points on X-Axis" /> <EditText android:id="@+id/editTextY" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/editTextX" android:hint="Points on Y-Axis" /> <TextView android:id="@+id/textView" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/editTextY" android:clickable="true" android:focusable="true" android:text="Touch to get co-ordinates" android:textAlignment="center" android:textColor="@android:color/background_dark" android:textSize="24sp" android:textStyle="bold" /> </RelativeLayout>
Step 3 − Add the following code to src/MainActivity.kt
Example
import android.os.Bundle
import android.widget.EditText
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
lateinit var textView: TextView
lateinit var editTextX: EditText
lateinit var editTextY: EditText
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
title = "KotlinApp"
editTextX = findViewById(R.id.editTextX)
editTextY = findViewById(R.id.editTextY)
textView = findViewById(R.id.textView)
textView.setOnTouchListener {
_, event ->
val x = event.x
val y = event.y
editTextX.setText(x.toString())
editTextY.setText(y.toString())
true
}
}
}Step 4 − Add the following code to androidManifest.xml
Example
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.myapplication"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with
your computer. To run the app from android studio, open one of your project's activity files and click the Run icon
from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen
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