Understanding WindowInsets

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Understanding WindowInsets Subhrajyoti Sen Software Engineer, Android GDE

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What are WindowInsets? WindowInsets in Views WindowInsets in Compose Agenda Section 02 Section 01 Section 03

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What are WindowInsets? Section 01

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Section 01 Common types of Window Insets: 1. Navigation bar 2. Status bar 3. IME 4. System Gestures 5. Mandatory System Gestures 6. Caption Bar

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Section 01 Status bar Navigation bar

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Section 01 IME

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WindowInsets in Views Section 02

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Section 02

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Section 02

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Section 02

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(Palmer penguins; Horst et al.) class MainActivity: Activity { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) WindowCompat.setDecorFitsSystemWindows(window, false) } } Section 02

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(Palmer penguins; Horst et al.) class MainActivity: Activity { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) window.statusBarColor = Color.TRANSPARENT window.navigationBarColor = Color.TRANSPARENT } } Section 02

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Section 02

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Section 02

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Section 02

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(Palmer penguins; Horst et al.) binding.root.setOnApplyWindowInsetsListener { _, insets -> val windowInsetsCompat = WindowInsetsCompat.toWindowInsetsCompat(insets) val navBarInsets = windowInsetsCompat.getInsets(WindowInsetsCompat.Type.navigationBars()) (binding.root.layoutParams as? ViewGroup.MarginLayoutParams)?.bottomMargin = navBarInsets.bottom insets } Section 02

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Section 02

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(Palmer penguins; Horst et al.) WindowCompat.getInsetsController(window, window.decorView) .show(WindowInsetsCompat.Type.ime()) Section 02 Show soft keyboard (IME)

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(Palmer penguins; Horst et al.) WindowCompat.getInsetsController(window, window.decorView) .hide(WindowInsetsCompat.Type.ime()) Section 02 Hide soft keyboard (IME)

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(Palmer penguins; Horst et al.) binding.root.setOnApplyWindowInsetsListener { _, insets -> val visible = WindowInsetsCompat .toWindowInsetsCompat(insets) .isVisible(WindowInsetsCompat.Type.ime()) } Section 02 Check IME Visibility

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WindowInsets in Compose Section 03

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26 Section 03 Box( modifier = Modifier.windowInsetsPadding() ) { Toolbar("Android") }

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27 Section 03 Box( modifier = Modifier.windowInsetsPadding(WindowInsets.statusBars) ) { Toolbar("Android") }

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28 Section 03 Box( modifier = Modifier.statusBarPadding() ) { Toolbar("Android") }

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29 Section 03 Box( modifier = Modifier .fillMaxSize() .background(Color.Black) ) { Box( modifier = Modifier .fillMaxSize() .statusBarsPadding() .background(Color.Gray)) { Box( modifier = Modifier.statusBarsPadding() .background(Color.Red) .size(50.dp) ) } }

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30 Section 03 Box( modifier = Modifier .fillMaxSize() .background(Color.Black) ) { Box( modifier = Modifier .fillMaxSize() .statusBarsPadding() .background(Color.Gray)) { Box( modifier = Modifier .statusBarsPadding() .background(Color.Red) .size(50.dp) ) } }

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31 Section 03

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32 Section 03 Scaffold( modifier = Modifier .fillMaxSize() .background(Color.Black) ) { contentPadding -> Box( modifier = Modifier .fillMaxSize() .padding(contentPadding) .background(Color.Gray)) { Box( modifier = Modifier .background(Color.Red) .size(50.dp) ) } }

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33 Section 03 Scaffold( modifier = Modifier .fillMaxSize() .background(Color.Black) ) { contentPadding -> Box( modifier = Modifier .fillMaxSize() .padding(contentPadding) .background(Color.Gray)) { Box( modifier = Modifier .background(Color.Red) .size(50.dp) ) } }

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34 Section 03 Scaffold( modifier = Modifier .fillMaxSize() .background(Color.Black) ) { contentPadding -> Box( modifier = Modifier .fillMaxSize() .padding(contentPadding) .background(Color.Gray)) { Box( modifier = Modifier .statusBarsPadding() .background(Color.Red) .size(50.dp) ) } }

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35 Section 03 Scaffold( modifier = Modifier .fillMaxSize() .background(Color.Black) ) { contentPadding -> Box( modifier = Modifier .fillMaxSize() .padding(contentPadding) .background(Color.Gray)) { Box( modifier = Modifier .statusBarsPadding() .background(Color.Red) .size(50.dp) ) } }

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36 Section 03 TextField( value = textFieldValue, onValueChange = { textFieldValue = it }, modifier = Modifier .align(Alignment.BottomCenter) .size(50.dp), )

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37 Section 03 TextField( value = textFieldValue, onValueChange = { textFieldValue = it }, modifier = Modifier .align(Alignment.BottomCenter) .imePadding() .size(50.dp), )

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Section 03 Multiplatform WindowInsets Source: insetsx GitHub https://github.com/mori-atsushi/insetsx

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Thank You Subhrajyoti Sen Software Engineer, Android GDE