package
com.geeksforgeeks.jcimagetransparency
import
android.os.Bundle
import
androidx.activity.ComponentActivity
import
androidx.activity.compose.setContent
import
androidx.compose.foundation.Image
import
androidx.compose.foundation.layout.*
import
androidx.compose.material.*
import
androidx.compose.runtime.Composable
import
androidx.compose.ui.Alignment
import
androidx.compose.ui.Modifier
import
androidx.compose.ui.graphics.Color
import
androidx.compose.ui.res.painterResource
import
androidx.compose.ui.tooling.preview.Preview
import
androidx.compose.ui.unit.dp
class
MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super
.onCreate(savedInstanceState)
setContent {
MainContent()
}
}
}
@Composable
fun MainContent(){
Scaffold(
topBar = {TopAppBar(
title = {Text(
"GFG | Change Image Transparency"
,
color = Color.White)},
backgroundColor = Color(
0xff0f9d58
)
) },
content = { MyContent()}
)
}
@Composable
fun MyContent(){
Column(Modifier.fillMaxSize(), verticalArrangement = Arrangement.Center, horizontalAlignment = Alignment.CenterHorizontally) {
Image(
painter = painterResource(id = R.drawable.sample_image),
contentDescription =
null
,
)
Spacer(modifier = Modifier.height(
100
.dp))
Image(
painter = painterResource(id = R.drawable.sample_image),
contentDescription =
null
,
alpha =
0
.2F
)
}
}
@Preview
(showBackground =
true
)
@Composable
fun DefaultPreview() {
MainContent()
}