Ekran powitalny Androida VectorDrawable

Chcę pokazać VectorDrawable na moim ekranie powitalnym

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:drawable="@android:color/white"
        android:gravity="fill" />

    <item
        android:drawable="@drawable/splash_screen"
        android:gravity="bottom|center" />
</layer-list>

Mój SVG ma android:width="320dp"iandroid:height="238dp"

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="320dp"
    android:height="238dp"
    android:viewportWidth="320"
    android:viewportHeight="238">
  <group>
    <clip-path android:pathData="M0,0h320v238h-320z M 0,0"/>
    <path
        android:pathData="M0,143.311a160,4.476 0,1 0,320 0a160,4.476 0,1 0,-320 0z"
        android:fillColor="#E6E6E6"/>
    <path
        android:pathData="M245.269,94.815C245.067,94.818 244.865,94.821 244.66,94.821C244.455,94.821 244.253,94.818 244.051,94.815C233.341,94.572 225.578,87.88 227.554,80.859L232.372,63.73L233.59,59.396L255.177,59.764L256.488,64.004L261.653,80.693C263.839,87.753 256.076,94.572 245.269,94.815Z"
        android:fillColor="#3F3D56"/>
    <path
        android:pathData="M256.488,64.004C248.993,68.288 239.768,68.184 232.372,63.73L233.59,59.396L255.177,59.764L256.488,64.004Z"
        android:strokeAlpha="0.2"
        android:fillColor="#000000"
        android:fillAlpha="0.2"/>
    <path
        android:pathData="M255.577,81.427C256.51,77.952 259.575,72.938 268.17,66.893C283.16,56.35 274.218,48.444 273.83,48.113C273.017,47.418 273.137,46.638 274.109,46.371C275.252,46.143 276.437,46.419 277.361,47.128C277.846,47.529 289.044,57.092 272.129,68.988C256.906,79.695 260.142,86.685 260.179,86.752C260.587,87.499 259.933,88.097 258.717,88.089C257.501,88.081 256.183,87.469 255.774,86.723C255.688,86.565 254.709,84.662 255.577,81.427Z"
        android:fillColor="#3F3D56"/>
    <path
        android:pathData="M234.697,97.312C234.036,97.312 233.403,97.049 232.935,96.582C232.468,96.115 232.206,95.481 232.206,94.821L232.206,84.027C232.206,82.652 233.321,81.537 234.697,81.537C236.072,81.537 237.187,82.652 237.187,84.027L237.187,94.821C237.187,95.481 236.925,96.115 236.458,96.582C235.991,97.049 235.357,97.312 234.697,97.312L234.697,97.312Z"
        android:fillColor="#3F3D56"/>
    <path
        android:pathData="M236.881,71.688C236.604,72.288 236.101,72.754 235.482,72.983C234.862,73.212 234.177,73.185 233.577,72.909L223.771,68.398C222.523,67.822 221.977,66.344 222.552,65.095C223.127,63.846 224.604,63.299 225.853,63.872L235.659,68.384C236.259,68.66 236.725,69.163 236.954,69.783C237.183,70.402 237.157,71.087 236.881,71.688L236.881,71.688Z"
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        android:fillColor="#3F3D56"/>
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        android:fillColor="#3F3D56"/>
    <path
        android:pathData="M230.751,11.308C230.603,11.308 230.457,11.335 230.318,11.386C229.904,11.537 229.603,11.9 229.532,12.335L227.888,22.006C227.814,22.44 227.978,22.88 228.317,23.161C228.656,23.442 229.119,23.52 229.531,23.367L238.728,19.955C239.141,19.802 239.441,19.441 239.514,19.007C239.588,18.573 239.425,18.133 239.086,17.852L239.086,17.852L231.533,11.593C231.313,11.409 231.037,11.308 230.751,11.308Z"
        android:fillColor="#E6E6E6"/>
    <path
        android:pathData="M259.399,11.308C259.113,11.308 258.836,11.409 258.617,11.593L251.064,17.852C250.725,18.133 250.562,18.573 250.636,19.007C250.709,19.441 251.009,19.802 251.422,19.955L260.619,23.367C261.031,23.52 261.494,23.442 261.833,23.161C262.172,22.88 262.335,22.44 262.262,22.006L260.618,12.335C260.547,11.9 260.246,11.537 259.832,11.386C259.693,11.335 259.547,11.308 259.399,11.308L259.399,11.308Z"
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        android:fillColor="#E6E6E6"/>
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        android:fillColor="#3F3D56"/>
    <path
        android:pathData="M242.999,45.005L246.044,45.005L246.044,48.741C246.044,49.582 245.362,50.263 244.521,50.263L244.521,50.263C243.681,50.263 242.999,49.582 242.999,48.741L242.999,45.005L242.999,45.005Z"
        android:fillColor="#FF6584"/>
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        android:fillColor="#3F3D56"/>
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        android:fillColor="#3F3D56"/>
    <path
        android:pathData="M255.015,70.145L254.664,65.683L254.313,61.22C254.274,60.73 253.977,60.298 253.533,60.086C253.089,59.874 252.566,59.915 252.161,60.194L248.472,62.729L245.778,64.58C245.429,64.172 244.92,63.937 244.383,63.937C243.847,63.937 243.337,64.172 242.989,64.58L240.295,62.729L236.606,60.194C236.2,59.915 235.677,59.874 235.233,60.086C234.789,60.298 234.492,60.73 234.453,61.22L234.102,65.683L233.751,70.145C233.713,70.636 233.939,71.109 234.344,71.388C234.75,71.666 235.273,71.708 235.717,71.496L239.757,69.568L243.076,67.985C243.421,68.334 243.892,68.531 244.383,68.531C244.874,68.531 245.345,68.334 245.69,67.985L249.009,69.568L253.049,71.496C253.493,71.708 254.016,71.666 254.422,71.388C254.827,71.109 255.053,70.636 255.015,70.145L255.015,70.145Z"
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        android:strokeAlpha="0.2"
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        android:fillAlpha="0.2"/>
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        android:fillColor="#6C63FF"/>
    <path
        android:pathData="M104.765,162.103m-3.239,0a3.239,3.239 0,1 1,6.479 0a3.239,3.239 0,1 1,-6.479 0"
        android:fillColor="#6C63FF"/>
    <path
        android:pathData="M186.108,63.843m-3.239,0a3.239,3.239 0,1 1,6.479 0a3.239,3.239 0,1 1,-6.479 0"
        android:fillColor="#6C63FF"/>
    <path
        android:pathData="M281.488,159.223m-3.239,0a3.239,3.239 0,1 1,6.479 0a3.239,3.239 0,1 1,-6.479 0"
        android:fillColor="#6C63FF"/>
    <path
        android:pathData="M284.727,74.281m-3.239,0a3.239,3.239 0,1 1,6.479 0a3.239,3.239 0,1 1,-6.479 0"
        android:fillColor="#6C63FF"/>
    <path
        android:pathData="M243.696,132.589m-3.239,0a3.239,3.239 0,1 1,6.479 0a3.239,3.239 0,1 1,-6.479 0"
        android:fillColor="#6C63FF"/>
  </group>
</vector>

Testowałem na Androidzie 8 (urządzenie 360dp x 640dp) i wszystko jest w porządku, ale w Androidzie 5.1.1 (urządzenie 320dp x 480dp) jest zdeformowane, mój ekran wypełniony VectorDrawable i stracił proporcje, jak to naprawić?

i motyw

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
        <!-- Show a splash screen on the activity. Automatically removed when
             Flutter draws its first frame -->
        <item name="android:windowBackground">@drawable/launch_background</item>
    </style>
</resources>

VectorDrawabledefiniuje nieruchomy obiekt rysowany. Podobnie do formatu SVG, każda grafika wektorowa jest zdefiniowana jako hierarchia drzewa, na którą składają się obiekty ścieżki i grupy. Każda ścieżka zawiera geometrię konturu obiektu, a grupa zawiera szczegóły dotyczące transformacji.

Możesz użyć SDP - skalowalnej jednostki rozmiaru.

Android SDK, który zapewnia nową jednostkę wielkości - sdp (skalowalny dp). Ta jednostka wielkości skaluje się wraz z rozmiarem ekranu. Może pomóc programistom Androida w obsłudze wielu ekranów.

Aby dodać SDP do swojego projektu (Korzystanie z Android Studio i Gradle) build.gradle

dependencies {
  implementation 'com.intuit.sdp:sdp-android:1.0.6'
}

Teraz dodaj sdp zamiast dp .

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="@dimen/_300sdp"
    android:height="@dimen/_225sdp"
    android:viewportWidth="512"
    android:viewportHeight="512">

Uwaga - Użyj układu AppCompatImageView (With app:srcCompat) zamiast ImageView w układzie.

 <android.support.v7.widget.AppCompatImageView //Or androidx.appcompat.widget.AppCompatImageView
    app:srcCompat="@drawable/your_svg"
    />

Problem dotyczy API 21, 22 i 23 dla tych, którzy muszą owijać mapę do rysowania wokół mapy bitowej. co musisz zrobić, to utworzyć 2 wersje listy warstw do rysowania i umieścić jedną w drawable-v22, a drugą w drawable-v24, jeśli te foldery jeszcze nie istnieją, po prostu utwórz je w res / i pamiętaj, że musisz ustawić projekt zobacz, aby zobaczyć, aby je zobaczyć (patrz zdjęcie poniżej).

w wersji v24 wystarczy użyć tego, który już masz:

<?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:drawable="@android:color/white"
    android:gravity="fill" />

<item

    android:gravity="center"
    android:src="@drawable/splash_screen" >
</item>

</layer-list>

dla drawable-v21 używasz następujących (zwróć uwagę, że z jakiegoś powodu te drawable nie będą działać na API wyższych niż 23)

<?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:drawable="@android:color/white"
    android:gravity="fill" />

<item android:gravity="center">
    <bitmap
        android:gravity="center"
        android:src="@drawable/splash_screen" />
</item>

</layer-list>

Android pobierze pierwszy lub drugi zasób w zależności od interfejsu API urządzenia, a następnie ekran powitalny będzie wyglądał świetnie na wszystkich urządzeniach.

BTW tutaj jest dokumentacja na innych dostosowań można wdrożyć nie tylko na urządzenia API, ale także od wielkości ekranu, rozdzielczość i wiele innych.