MainActivity.kt
package com.cfsuman.jetpackcompose
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.compose.animation.core.FastOutSlowInEasing
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.tween
import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.detectTapGestures
import androidx.compose.foundation.layout.*
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.rotate
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
MainContent()
}
}
@Composable
fun MainContent(){
Column(
modifier = Modifier
.background(Color(0xFFEDEAE0))
.fillMaxSize(),
verticalArrangement = Arrangement.Center,
horizontalAlignment = Alignment.CenterHorizontally
) {
val isRotated = remember { mutableStateOf(false) }
val angle: Float by animateFloatAsState(
targetValue = if (isRotated.value) 360F else 0F,
animationSpec = tween(
durationMillis = 3000, // duration
easing = FastOutSlowInEasing
)
)
Text(
text = "Long Press Me",
fontSize = 50.sp,
color = Color(0xFF7C0A02),
modifier = Modifier
.padding(25.dp)
.rotate(angle)
.pointerInput(Unit) {
detectTapGestures(
onLongPress = {
isRotated.value = !isRotated.value
}
)
}
)
}
}
@Preview
@Composable
fun ComposablePreview(){
//MainContent()
}
}


- jetpack compose - Double tap listener
- jetpack compose - Tap listener
- jetpack compose - Press listener
- jetpack compose - Column vertical scrolling
- jetpack compose - Swiping
- jetpack compose - Panning zooming rotating
- jetpack compose - Weight modifier
- jetpack compose - Button with icon
- jetpack compose - Button color
- jetpack compose - Button rounded corners
- jetpack compose - TextField remove underline
- jetpack compose - TextField background color
- jetpack compose - TextField hint
- jetpack compose - TextField clear focus
- jetpack compose - TextField focus change listener