android jetpack compose

package com.dl.testcompose

import android.os.Bundle
import android.util.Log
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.gestures.detectTapGestures
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.dl.testcompose.ui.theme.TestcomposeTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            TestcomposeTheme {
                // A surface container using the 'background' color from the theme
                Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) {
                    Greeting("Android","Wangjie")
                }
            }
        }
    }
}

@Composable
fun Greeting(name: String,fullname: String) {
//    Text(text = "Hello $name!")
    Row(modifier = Modifier.padding(all = 8.dp)
        .background(Color.Green)) {
        Image(painter = painterResource(R.mipmap.logo),
            contentDescription = "Contact profile picture",
            modifier = Modifier
                .size(40.dp)
                .clip(CircleShape)
                .pointerInput(Unit) {
                    detectTapGestures(
                        onPress = {
                            Log.i("LOG", "onTouch")
                        }, onTap = {
                            Log.i("LOG", "onClick")
                        }, onDoubleTap = {
                            Log.i("LOG","onDoubleClick")
                        }, onLongPress = {
                            Log.i("LOG","onLongClick")
                        }
                    )
                }
        )
        Spacer(modifier = Modifier.width(8.dp))
        
        Column() {
            Text(text = "Hello $name!",
                fontSize = 10.sp
            )
            Spacer(modifier = Modifier.height(4.dp))
            Text(text = "我是$fullname")
        }
    }
}

@Preview(showBackground = true)
@Composable
fun DefaultPreview() {
    TestcomposeTheme {
        Greeting("Android","Wangjie")
    }
}