1 /*
2  * Copyright 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.compose.material3.windowsizeclass.samples
18 
19 import android.os.Bundle
20 import androidx.activity.ComponentActivity
21 import androidx.activity.compose.setContent
22 import androidx.annotation.Sampled
23 import androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSizeClassApi
24 import androidx.compose.material3.windowsizeclass.WindowWidthSizeClass
25 import androidx.compose.material3.windowsizeclass.calculateWindowSizeClass
26 import androidx.compose.runtime.Composable
27 
28 @OptIn(ExperimentalMaterial3WindowSizeClassApi::class)
29 @Sampled
AndroidWindowSizeClassSamplenull30 fun AndroidWindowSizeClassSample() {
31     class MyActivity : ComponentActivity() {
32         override fun onCreate(savedInstanceState: Bundle?) {
33             super.onCreate(savedInstanceState)
34             setContent {
35                 // Calculate the window size class for the activity's current window. If the window
36                 // size changes, for example when the device is rotated, the value returned by
37                 // calculateSizeClass will also change.
38                 val windowSizeClass = calculateWindowSizeClass(this)
39                 // Perform logic on the window size class to decide whether to use a nav rail.
40                 val useNavRail = windowSizeClass.widthSizeClass > WindowWidthSizeClass.Compact
41 
42                 // MyScreen knows nothing about window size classes, and performs logic based on a
43                 // Boolean flag.
44                 MyScreen(useNavRail = useNavRail)
45             }
46         }
47     }
48 }
49 
MyScreennull50 @Suppress("UNUSED_PARAMETER") @Composable private fun MyScreen(useNavRail: Boolean) {}
51