title: How to use parseInt in kotlin?
body: <p>I making fun increase, decrease for item count. I want make count.text plus "T" Character. when I tried to make code like this.
   error code: java.lang.NumberFormatException: For input string: "1T"
  How can I solve this problem? Any one can help??</p>
  
  <pre><code>   fun increaseInteger() {
  
          var count = findViewById&lt;TextView&gt;(R.id.integer_number)
          count.text=intent.getStringExtra("case")+"T"
          var countResult = parseInt(intent.getStringExtra("case")+"T")
          var countValue = countResult+1
          if (countValue &gt;= 1 &amp;&amp; !decrease.isEnabled) { decrease.isEnabled = true}
          intent.putExtra("result",countValue)
          display(countValue)
      }
  
      fun decreaseInteger() {
  
          var count = findViewById&lt;TextView&gt;(R.id.integer_number)
          count.text=intent.getStringExtra("case")+"T"
          var countResult = parseInt(intent.getStringExtra("case")+"T")
          var countValue = countResult-1
          if (countValue &lt;= 1) {decrease.isEnabled = false }
          intent.putExtra("result",countValue)
             display(countValue)
      }
  
  
  </code></pre>