Mobile Apps 2023W Tutorial 1 - Revision history

Soma: /* MainActivity.kt */

2023-01-18T20:49:52Z

MainActivity.kt

← Older revision		Revision as of 20:49, 18 January 2023
Line 27:		Line 27:
	import androidx.compose.ui.unit.dp		import androidx.compose.ui.unit.dp
	import androidx.compose.ui.unit.sp		import androidx.compose.ui.unit.sp
			import kotlin.reflect.KFunction1
	import carleton.comp2601.textanalyzer7.ui.theme.TextAnalyzer7Theme		import carleton.comp2601.textanalyzer7.ui.theme.TextAnalyzer7Theme
	~~import kotlin.reflect.KFunction1~~

	class MainActivity : ComponentActivity() {		class MainActivity : ComponentActivity() {
Line 47:		Line 47:
	mutableStateOf("")		mutableStateOf("")
	}		}

	var analysisMode by remember {		var analysisMode by remember {
	mutableStateOf("Count")		mutableStateOf("Count")
Line 65:		Line 66:
	color = MaterialTheme.colors.background		color = MaterialTheme.colors.background
	) {		) {
	Column(		Column (
	verticalArrangement = Arrangement.Center,		verticalArrangement = Arrangement.Center,
	horizontalAlignment = Alignment.CenterHorizontally,		horizontalAlignment = Alignment.CenterHorizontally,
	~~modifier = Modifier.fillMaxWidth()~~)		){
	{		Text("Text Analyzer 7",
	Text(		fontWeight = FontWeight.Bold,
	"Text Analyzer",		textAlign = TextAlign.Center,
	fontWeight = FontWeight.Bold,		fontSize = 48.sp,
	textAlign = TextAlign.Center,		modifier = Modifier.padding(bottom = 64.dp))
	fontSize = 48.sp,		TextField(value = t,
	modifier = Modifier.padding(bottom = 64.dp)		onValueChange = { t = it },
	)		label = { Text("Enter Text") })
	TextField(value = t,		Text(analysisMode + ": " + r,
	onValueChange = { t = it },		modifier = Modifier.padding(32.dp))
	label = { Text("Enter Text") })		Box {
	Text(		Button(
	analysisMode + ": " + r,		modifier = Modifier.padding(top = 32.dp),
	modifier = Modifier.padding(32.dp)		onClick = {
	)
	Box {
	Button(
	modifier = Modifier.padding(top = 32.dp),
	onClick = {
	showMenu = true		showMenu = true
	}) {		}) {
	Text(text = "Analysis Menu")		Text(text = "Analysis Menu")
	}
	~~ModeMenu(showMenu = showMenu,~~
	~~updateMode = { analysisMode = it },~~
	~~hideMenu = { showMenu = false }~~)
	}		}
			ModeMenu(showMenu = showMenu,
			updateMode = { analysisMode = it },
			hideMenu = { showMenu = false })
	}		}
			}
	}		}
	}		}
Line 123:		Line 119:
	var count = 0		var count = 0
	val upperCase = setOf("A","B","C","D","E","F","G","H","I","J","K","L","M",		val upperCase = setOf("A","B","C","D","E","F","G","H","I","J","K","L","M",
	"N","O","P","Q","R","S","T","U","V","W","X","Y","Z")		"N","O","P","Q","R","S","T","U","V","W","X","Y","Z")
	for (c in s) {		for (c in s) {
	if (upperCase.contains(c.toString())) {		if (upperCase.contains(c.toString())) {

Soma: /* MainActivity.kt */

2023-01-18T20:49:04Z

MainActivity.kt

← Older revision		Revision as of 20:49, 18 January 2023
Line 145:		Line 145:
	@Composable		@Composable
	fun DefaultPreview() {		fun DefaultPreview() {
	~~MyApplicationTheme~~ {		TextAnalyzer7Theme {
	MainScreen()		MainScreen()
	}		}
	}		}
	</syntaxhighlight>		</syntaxhighlight>

Soma at 20:33, 18 January 2023

2023-01-18T20:33:19Z

← Older revision		Revision as of 20:33, 18 January 2023
Line 1:		Line 1:

			==Tasks==

			# Put the app title at the top of the screen and the analysis menu at the bottom. Leave the rest centered.
			# Add in two new analysis modes, one to count numeric characters, one of your choice.
			# Make the result area bold and with a slightly larger text.
			# Make the app remember its state when rotated.

	==Code==		==Code==

Soma: Created page with " ==Code== ===MainActivity.kt=== package carleton.comp2601.textanalyzer7 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.* import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.text.font.FontWeight import androidx.c..."

2023-01-18T19:09:28Z

Created page with " ==Code== ===MainActivity.kt=== <syntaxhighlight lang="kotlin" line> package carleton.comp2601.textanalyzer7 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.* import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.text.font.FontWeight import androidx.c..."

New page

==Code==

===MainActivity.kt===

<syntaxhighlight lang="kotlin" line>
package carleton.comp2601.textanalyzer7

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.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.font.FontWeight
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 carleton.comp2601.textanalyzer7.ui.theme.TextAnalyzer7Theme
import kotlin.reflect.KFunction1

class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
TextAnalyzer7Theme {
// A surface container using the 'background' color from the theme
MainScreen()
}
}
}
}

@Composable
fun MainScreen() {
var t by remember {
mutableStateOf("")
}
var analysisMode by remember {
mutableStateOf("Count")
}

var showMenu by remember {
mutableStateOf(false)
}

val analysisFunc: KFunction1<String, String>? = analysis[analysisMode]
var r = ""
if (analysisFunc != null) {
r = analysisFunc(t)
}

Surface(
modifier = Modifier.fillMaxSize(),
color = MaterialTheme.colors.background
) {
Column(
verticalArrangement = Arrangement.Center,
horizontalAlignment = Alignment.CenterHorizontally,
modifier = Modifier.fillMaxWidth())
{
Text(
"Text Analyzer",
fontWeight = FontWeight.Bold,
textAlign = TextAlign.Center,
fontSize = 48.sp,
modifier = Modifier.padding(bottom = 64.dp)
)
TextField(value = t,
onValueChange = { t = it },
label = { Text("Enter Text") })
Text(
analysisMode + ": " + r,
modifier = Modifier.padding(32.dp)
)
Box {
Button(
modifier = Modifier.padding(top = 32.dp),
onClick = {
showMenu = true
}) {
Text(text = "Analysis Menu")
}
ModeMenu(showMenu = showMenu,
updateMode = { analysisMode = it },
hideMenu = { showMenu = false })
}
}
}
}

@Composable
fun ModeMenu(showMenu: Boolean,
updateMode:(String)->Unit,
hideMenu:()->Unit) {

DropdownMenu(
expanded = showMenu,
onDismissRequest = { hideMenu() }
) {
analysis.keys.forEach { mode ->
DropdownMenuItem(onClick = {
updateMode(mode)
hideMenu()
}) {
Text(text = mode)
}
}
}
}

fun countUpper(s: String): String {
var count = 0
val upperCase = setOf("A","B","C","D","E","F","G","H","I","J","K","L","M",
"N","O","P","Q","R","S","T","U","V","W","X","Y","Z")
for (c in s) {
if (upperCase.contains(c.toString())) {
count += 1
}
}
return count.toString()
}

fun countCharacters(s: String): String {
val charcount = s.length
return charcount.toString()
}

val analysis: MutableMap<String, KFunction1<String, String>> = mutableMapOf(
"Count" to ::countCharacters,
"Upper Case" to ::countUpper
)

@Preview(showBackground = true)
@Composable
fun DefaultPreview() {
MyApplicationTheme {
MainScreen()
}
}
</syntaxhighlight>