/
Scaffold.kt
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/
Scaffold.kt
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/*
* Copyright 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.compose.snippets.components
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.material3.BottomAppBar
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.material3.TopAppBar
import androidx.compose.material3.TopAppBarDefaults.topAppBarColors
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
@OptIn(ExperimentalMaterial3Api::class)
@Preview
// [START android_compose_components_scaffold]
@Composable
fun ScaffoldExample() {
var presses by remember { mutableIntStateOf(0) }
Scaffold(
topBar = {
TopAppBar(
colors = topAppBarColors(
containerColor = MaterialTheme.colorScheme.primaryContainer,
titleContentColor = MaterialTheme.colorScheme.primary,
),
title = {
Text("Top app bar")
}
)
},
bottomBar = {
BottomAppBar(
containerColor = MaterialTheme.colorScheme.primaryContainer,
contentColor = MaterialTheme.colorScheme.primary,
) {
Text(
modifier = Modifier
.fillMaxWidth(),
textAlign = TextAlign.Center,
text = "Bottom app bar",
)
}
},
floatingActionButton = {
FloatingActionButton(onClick = { presses++ }) {
Icon(Icons.Default.Add, contentDescription = "Add")
}
}
) { innerPadding ->
Column(
modifier = Modifier
.padding(innerPadding),
verticalArrangement = Arrangement.spacedBy(16.dp),
) {
Text(
modifier = Modifier.padding(8.dp),
text =
"""
This is an example of a scaffold. It uses the Scaffold composable's parameters to create a screen with a simple top app bar, bottom app bar, and floating action button.
It also contains some basic inner content, such as this text.
You have pressed the floating action button $presses times.
""".trimIndent(),
)
}
}
}
// [END android_compose_components_scaffold]