package com.example.testproject
import android.annotation.SuppressLint
import android.content.Context
import android.content.Intent
import android.net.Uri
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.layout.*
import androidx.compose.foundation.text.KeyboardOptions
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.platform.LocalContext
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.input.TextFieldValue
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.core.content.ContextCompat.startActivity
import com.example.testproject.ui.theme.TestProjectTheme
import com.example.testproject.ui.theme.greenColor
class MainActivity : ComponentActivity() {
@SuppressLint("UnusedMaterialScaffoldPaddingParameter")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
TestProjectTheme {
// on below line we are specifying
// background color for our application
Surface(
modifier = Modifier.fillMaxSize(),
color = MaterialTheme.colors.background
) {
// on below line we are specifying
// theme as scaffold.
Scaffold(
// in scaffold we are specifying top bar.
topBar = {
// inside top bar we are specifying
// background color.
TopAppBar(backgroundColor = greenColor,
// along with that we are specifying
// title for our top bar.
title = {
// in the top bar we are specifying
// title as a text
Text(
// on below line we are specifying
// text to display in top app bar.
text = "GFG",
color = Color.White,
// on below line we are specifying
// modifier to fill max width.
modifier = Modifier.fillMaxWidth(),
// on below line we are
// specifying text alignment.
textAlign = TextAlign.Center,
)
}
)
}
) {
// on below line we are
// calling method to display UI.
openEmailer()
}
}
}
}
}
}
@Composable
fun openEmailer() {
// in the below line, we are
// creating variables for URL
val senderEmail = remember {
mutableStateOf(TextFieldValue())
}
val emailSubject = remember {
mutableStateOf(TextFieldValue())
}
val emailBody = remember {
mutableStateOf(TextFieldValue())
}
// on below line we are creating
// a variable for a context
val ctx = LocalContext.current
// on below line we are creating a column
Column(
// on below line we are specifying modifier
// and setting max height and max width
// for our column
modifier = Modifier
.fillMaxSize()
.fillMaxHeight()
.fillMaxWidth()
// on below line we are
// adding padding for our column
.padding(5.dp),
// on below line we are specifying horizontal
// and vertical alignment for our column
horizontalAlignment = Alignment.CenterHorizontally,
verticalArrangement = Arrangement.Center
) {
// on the below line, we are
// creating a text field.
TextField(
// on below line we are specifying
// value for our text field.
value = senderEmail.value,
// on below line we are adding on value
// change for text field.
onValueChange = { senderEmail.value = it },
// on below line we are adding place holder as text
placeholder = { Text(text = "Enter sender email address") },
// on below line we are adding modifier to it
// and adding padding to it and filling max width
modifier = Modifier
.padding(16.dp)
.fillMaxWidth(),
// on below line we are adding text style
// specifying color and font size to it.
textStyle = TextStyle(color = Color.Black, fontSize = 15.sp),
// on below line we are
// adding single line to it.
singleLine = true,
)
// on below line adding a spacer.
Spacer(modifier = Modifier.height(10.dp))
// on the below line, we are creating a text field.
TextField(
// on below line we are specifying
// value for our text field.
value = emailSubject.value,
// on below line we are adding on value change
// for text field.
onValueChange = { emailSubject.value = it },
// on below line we are adding place holder as text
placeholder = { Text(text = "Enter email subject") },
// on below line we are adding modifier to it
// and adding padding to it and filling max width
modifier = Modifier
.padding(16.dp)
.fillMaxWidth(),
// on below line we are adding text style
// specifying color and font size to it.
textStyle = TextStyle(color = Color.Black, fontSize = 15.sp),
// on below line we are
// adding single line to it.
singleLine = true,
)
// on below line adding a spacer.
Spacer(modifier = Modifier.height(10.dp))
// on the below line, we are creating a text field.
TextField(
// on below line we are specifying
// value for our text field.
value = emailBody.value,
// on below line we are adding on value
// change for text field.
onValueChange = { emailBody.value = it },
// on below line we are adding place holder as text
placeholder = { Text(text = "Enter email body") },
// on below line we are adding modifier to it
// and adding padding to it and filling max width
modifier = Modifier
.padding(16.dp)
.fillMaxWidth(),
// on below line we are adding text style
// specifying color and font size to it.
textStyle = TextStyle(color = Color.Black, fontSize = 15.sp),
// on below line we are
// adding single line to it.
singleLine = true,
)
// on below line adding a spacer.
Spacer(modifier = Modifier.height(20.dp))
// on below line adding a
// button to send an email
Button(onClick = {
// on below line we are creating
// an intent to send an email
val i = Intent(Intent.ACTION_SEND)
// on below line we are passing email address,
// email subject and email body
val emailAddress = arrayOf(senderEmail.value.text)
i.putExtra(Intent.EXTRA_EMAIL,emailAddress)
i.putExtra(Intent.EXTRA_SUBJECT,emailSubject.value.text)
i.putExtra(Intent.EXTRA_TEXT,emailBody.value.text)
// on below line we are
// setting type of intent
i.setType("message/rfc822")
// on the below line we are starting our activity to open email application.
ctx.startActivity(Intent.createChooser(i,"Choose an Email client : "))
}) {
// on the below line creating a text for our button.
Text(
// on below line adding a text ,
// padding, color and font size.
text = "Send Email",
modifier = Modifier.padding(10.dp),
color = Color.White,
fontSize = 15.sp
)
}
}
}