Kotlin How to get and set a text to TextView in Android using Kotlin

Question

I m newbie       I want to change text of TextView While click on it    My code    val text  TextView   findViewById R id android text  as TextView     text setOnClickListener           text setText getString R string name           Output  I got the output but showing use property access syntax   Can anyone tell me how to do it   Thanks in advance

User · Answer

to set text in kotlin  textview text    write here

User · Answer

import kotlinx android synthetic main MainActivity    class Mainactivity   AppCompatActivity           override fun onCreate savedInstanceState  Bundle             super onCreate savedInstanceState          setContentView R layout MainActivity           txt setText  hello Kotlin

User · Answer

findViewById R id android text  does not need typecasting

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just add below line and access direct xml object  import kotlinx android synthetic main activity main    override fun onCreate savedInstanceState  Bundle             super onCreate savedInstanceState          setContentView R layout activity main           txt HelloWorld text    abc          replace activity main according to your XML name

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lt TextView         android id    id usage          android layout marginTop  220dip          android layout marginLeft  45dip          android layout marginRight  15dip          android typeface  serif          android layout width  wrap content          android layout height  wrap content          android text  Google           android textColor   030900   gt    usage text  hello world

User · Answer

Find the text view from the layout   val textView   TextView   findViewById R id android text  as TextView   Setting onClickListener on the textview   textview setOnClickListener object  View OnClickListener       override fun onClick view  View   Unit              Code here          textView text   getString R string name             Argument parentheses can be omitted from View setOnClickListener if we pass a single function literal argument  So  the simplified code will be   textview setOnClickListener          Code here      textView text   getString R string name

User · Answer

Yes its late - but may help someone on reference xml with EditText  Button and TextView onClick on Button will update the value from EditText to TextView          lt EditText             android id  quot   id et id quot              android layout width  quot match parent quot              android layout height  quot wrap content quot   gt            lt Button             android id  quot   id btn submit id quot              android layout width  quot match parent quot              android layout height  quot wrap content quot   gt            lt TextView             android id  quot   id txt id quot              android layout width  quot match parent quot              android layout height  quot wrap content quot   gt   Look at the code do the action in your class Don t need to initialize the id s of components like in Java  You can do it by their xml Id s override fun onCreate savedInstanceState  Bundle             super onCreate savedInstanceState          setContentView R layout activity sample           btn submit id setOnClickListener               txt id setText et id text                    also you can set value in TextView like  textview text    quot your value quot

User · Answer

In kotlin don t use getters and setters as like in java The correct format of the kotlin is given below   val textView  TextView   findViewById R id android text  as TextView textView setOnClickListener       textView text   getString R string name      To get the values from the Textview we have to use this method   val str  String   textView text toString     println  the value is  str

User · Answer

Use textView text for getter and setter  ex  val textView   findViewById lt TextView gt  R id textView     Set text textView text    quot Hello World  quot     Get text val textViewString   textView text toString

User · Answer

The top post has  as TextView  appended on the end  You might get other compiler errors if you leave this on  The following should be fine    val text  TextView   findViewById R id android text  as TextView   Where  android text  is the ID of your textView

[android] Kotlin: How to get and set a text to TextView in Android using Kotlin?

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