package
com.geeksforgeeks.jcpassonclicktofunction
import
android.os.Bundle
import
androidx.activity.ComponentActivity
import
androidx.activity.compose.setContent
import
androidx.compose.foundation.layout.*
import
androidx.compose.material.*
import
androidx.compose.runtime.Composable
import
androidx.compose.runtime.mutableStateOf
import
androidx.compose.runtime.remember
import
androidx.compose.ui.Alignment
import
androidx.compose.ui.Modifier
import
androidx.compose.ui.graphics.Color
import
androidx.compose.ui.tooling.preview.Preview
import
androidx.compose.ui.unit.dp
import
androidx.compose.ui.unit.sp
class
MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super
.onCreate(savedInstanceState)
setContent {
MainContent()
}
}
}
@Composable
fun MainContent(){
Scaffold(
topBar = {TopAppBar(
title = {Text(
"GFG | Change Button Size"
,
color = Color.White)},
backgroundColor = Color(
0xff0f9d58
)
) },
content = { MyContent()}
)
}
@Composable
fun MyContent() {
val mCounter = remember { mutableStateOf(
0
)}
Column(Modifier.fillMaxWidth(), horizontalAlignment = Alignment.CenterHorizontally) {
Text(text = mCounter.value.toString(), fontSize =
50
.sp)
Spacer(modifier = Modifier.height(
50
.dp))
CreateButton(text =
"Add 5"
) {
mCounter.value +=
5
}
Spacer(modifier = Modifier.height(
50
.dp))
CreateButton(text =
"Add 10"
) {
mCounter.value +=
10
}
Spacer(modifier = Modifier.height(
50
.dp))
CreateButton(text =
"Subtract 5"
) {
mCounter.value -=
5
}
}
}
@Composable
fun CreateButton(text:String, onClick: ()-> Unit){
Button(
onClick = onClick,
colors = ButtonDefaults.buttonColors(backgroundColor = Color(
0XFF0F9D58
))
){
Text(text = text, color = Color.White)
}
}
@Preview
(showBackground =
true
)
@Composable
fun DefaultPreview() {
MainContent()
}