1727 views.Will right Textview visibility invisibility using Kotlin its very very basic program along XML properties of Textview and Button.
activity_main.xml
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout 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=".MainActivity" android:orientation="vertical" > <TextView android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="gone" android:textAllCaps="true" android:textColor="#0879ea" android:textSize="30sp" android:textStyle="italic|normal" android:layout_marginLeft="20dp" android:layout_marginBottom="20dp" android:layout_marginRight="20dp" android:layout_marginTop="20dp" android:padding="20dp" android:layout_gravity="center" /> <Button android:id="@+id/button3" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Visible" android:textAllCaps="false" android:textColor="#0879ea" android:textSize="30sp" android:textStyle="italic|normal" android:layout_margin="20dp" android:padding="20dp" android:gravity="left"/> <Button android:id="@+id/button4" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Invisible" android:textColor="#0879ea" android:textSize="30sp" android:textStyle="italic|normal" android:layout_margin="20dp" android:padding="20dp" android:gravity="left"/> </LinearLayout> |
MainActivity.kt
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package com.androindian.raj.text import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.Button import android.widget.TextView import android.widget.Toast import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) button3.setOnClickListener{ textView.setText("Good Morning") textView.visibility=View.VISIBLE } button3.setOnClickListener{ textView.visibility=View.INVISIBLE textView.setText("Good morning") } } } |
