msfjarvis/compose-lobsters
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Borrow some improvements from my previous attempt

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Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
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Harsh Shandilya 2020-08-30 16:46:57 +05:30
parent 0c3b1d388f
commit bd6f7583c8
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GPG key ID: 366D7BBAD1031E80
1 changed files with 8 additions and 11 deletions
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app/src/main/java/dev/msfjarvis/todo/MainActivity.kt
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@ -10,11 +10,8 @@ import androidx.compose.material.MaterialTheme
import androidx.compose.material.Scaffold import androidx.compose.material.Scaffold
import androidx.compose.material.TopAppBar import androidx.compose.material.TopAppBar
import androidx.compose.runtime.Composable import androidx.compose.runtime.Composable
import androidx.compose.runtime.State
import androidx.compose.runtime.collectAsState import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.setContent import androidx.compose.ui.platform.setContent
@ -36,8 +33,9 @@ class MainActivity : AppCompatActivity() {
TodoTheme { TodoTheme {
val coroutineScope = rememberCoroutineScope() val coroutineScope = rememberCoroutineScope()
val itemsDao = Graph.database.todoItemsDao() val itemsDao = Graph.database.todoItemsDao()
val items by itemsDao.getAllItems().collectAsState(initial = emptyList())
TodoApp( TodoApp(
itemsDao.getAllItems().collectAsState(initial = emptyList()), items,
{ item -> coroutineScope.launch { itemsDao.insert(item) } }, { item -> coroutineScope.launch { itemsDao.insert(item) } },
{ item -> coroutineScope.launch { itemsDao.delete(item) } }, { item -> coroutineScope.launch { itemsDao.delete(item) } },
) )
@ -48,17 +46,16 @@ class MainActivity : AppCompatActivity() {
@Composable @Composable
fun TodoApp( fun TodoApp(
items: State<List<TodoItem>>, items: List<TodoItem>,
onAdd: (item: TodoItem) -> Unit, onAdd: (item: TodoItem) -> Unit,
onDelete: (item: TodoItem) -> Unit, onDelete: (item: TodoItem) -> Unit,
) { ) {
val realItems by items
Scaffold( Scaffold(
topBar = { TopAppBar({ Text(text = "I can Compose?") }) }, topBar = { TopAppBar({ Text(text = "I can Compose?") }) },
floatingActionButton = { floatingActionButton = {
FloatingActionButton( FloatingActionButton(
onClick = { onAdd.invoke(TodoItem("Item ${realItems.size + 1}")) }, onClick = { onAdd.invoke(TodoItem("Item ${items.size + 1}")) },
elevation = 8.dp, elevation = 8.dp,
modifier = Modifier.semantics { testTag = "fab" } modifier = Modifier.semantics { testTag = "fab" }
) { ) {
@ -70,7 +67,7 @@ fun TodoApp(
}, },
bodyContent = { bodyContent = {
LazyColumnFor( LazyColumnFor(
items = realItems, items = items,
modifier = Modifier.padding(horizontal = 16.dp) modifier = Modifier.padding(horizontal = 16.dp)
) { todoItem -> ) { todoItem ->
TodoRowItem(item = todoItem) { onDelete.invoke(todoItem) } TodoRowItem(item = todoItem) { onDelete.invoke(todoItem) }
@ -83,11 +80,11 @@ fun TodoApp(
@Composable @Composable
fun PreviewApp() { fun PreviewApp() {
TodoTheme { TodoTheme {
val items = remember { mutableStateOf(listOf(TodoItem("Item 1"))) } val items = arrayListOf(TodoItem("Item 1"))
TodoApp( TodoApp(
items, items,
{}, items::add,
{}, items::remove,
) )
} }
} }