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android-studio - 动画选择器导致视图初始化崩溃

问题描述

我的目标是创建一个自定义开关，包括选中和未选中状态之间的动画转换。

我轻松实现了默认状态，并且我的开关在两种状态下看起来都符合预期，并且在状态更改时会更改其外观。

当我附加动画选择器而不是常规选择器时会出现问题。

我收到这样的错误：

android.view.InflateException: Binary XML file line #10: Binary XML file line #10: Error inflating class android.widget.Switch

引起：android.content.res.Resources$NotFoundException：来自可绘制资源 ID #0x7f060072 在 android.content.res.Resources.loadDrawableForCookie(Resources.java:2640) 的文件 res/drawable/switch_track_animation_unchecked_checked.xml

引起：android.content.res.Resources$NotFoundException：文件 res/drawable/switch_track_animated_selector.xml 来自可绘制资源 ID #0x7f060070

我可以保证我正确地访问了那些drawables等。

我经历了无效的缓存并重新启动、清理构建、重建等，但它不起作用。

查看样品

<Switch
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:thumb="@drawable/switch_thumb_selector"
            android:track="@drawable/switch_track_animated_selector"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            android:checked="true"
            android:id="@+id/switch2"/>

switch_track_animated_selector

<animated-selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/checked"
          android:drawable="@drawable/switch_bckg_on"
          android:state_checked="true"/>

    <item android:id="@+id/unchecked"
          android:drawable="@drawable/switch_bckg_off"
          android:state_checked="false"/>

    <transition
            android:fromId="@+id/unchecked"
            android:toId="@+id/checked"
            android:drawable="@drawable/switch_track_animation_unchecked_checked"/>

    <transition
            android:fromId="@+id/checked"
            android:toId="@+id/unchecked"
            android:drawable="@drawable/switch_track_animation_checked_unchecked"/>
</animated-selector>

switch_bckg_on.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#00B05A"/>
    <stroke android:width="1dp" android:color="#00B05A" />
    <corners android:radius="180dp"/>
    <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
</shape>

switch_bckg_off.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#F1F1F1"/>
    <stroke android:width="1dp" android:color="#E0E0E0" />
    <corners android:radius="180dp"/>
    <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
</shape>

switch_track_animation_checked_unchecked.xml

<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
                 xmlns:aapt="http://schemas.android.com/aapt"
                 android:drawable="@drawable/switch_bckg_on">
    <target android:name="android:drawable">
        <aapt:attr name="android:animation">
            <objectAnimator
                    android:duration="@android:integer/config_shortAnimTime"
                    android:interpolator="@android:interpolator/accelerate_decelerate"
                    android:propertyName="strokeColor"
                    android:valueFrom="#A0A0A0"
                    android:valueTo="#1E9618"
                    android:valueType="intType" />
        </aapt:attr>
    </target>
</animated-vector>

switch_track_animation_unchecked_checked.xml

<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
                 xmlns:aapt="http://schemas.android.com/aapt"
                 android:drawable="@drawable/switch_bckg_off">
    <target android:name="android:drawable">
        <aapt:attr name="android:animation">
            <objectAnimator
                    android:duration="@android:integer/config_shortAnimTime"
                    android:interpolator="@android:interpolator/accelerate_decelerate"
                    android:propertyName="strokeColor"
                    android:valueFrom="#A0A0A0"
                    android:valueTo="#1E9618"
                    android:valueType="intType"/>
        </aapt:attr>
    </target>
</animated-vector>

我还使用矢量可绘制而不是形状检查了上述方法，并且得到了相同的结果。向量示例

ic_thumb_vector_off

<vector android:height="33dp" android:viewportHeight="300"
    android:viewportWidth="300" android:width="33dp" xmlns:android="http://schemas.android.com/apk/res/android">
    <path android:name="background_off" android:fillColor="#FFFFFF" android:fillType="nonZero"
        android:pathData="M149.926,149.926m-149.176,0a149.176,149.176 0,1 1,298.352 0a149.176,149.176 0,1 1,-298.352 0"
        android:strokeAlpha="0.1" android:strokeColor="#000000" android:strokeWidth="0.5"/>
    <path android:name="icon_off" android:fillColor="#9B9B9B" android:fillType="evenOdd"
        android:pathData="M166.88,146.104C166.13,145.354 166.13,144.228 166.88,143.478L195.019,115.339C195.77,114.588 196.145,113.463 196.145,112.712C196.145,111.962 195.77,110.836 195.019,110.086L189.767,104.833C189.016,104.083 187.891,103.708 187.14,103.708C186.015,103.708 185.264,104.083 184.514,104.833L156.375,132.972C155.624,133.723 154.499,133.723 153.748,132.972L125.609,104.833C124.859,104.083 123.733,103.708 122.983,103.708C122.233,103.708 121.107,104.083 120.357,104.833L115.104,110.086C114.354,110.836 113.979,111.962 113.979,112.712C113.979,113.463 114.354,114.588 115.104,115.339L143.243,143.478C143.994,144.228 143.994,145.354 143.243,146.104L115.104,174.243C114.354,174.993 113.979,176.119 113.979,176.869C113.979,177.62 114.354,178.745 115.104,179.496L120.357,184.748C121.107,185.499 122.233,185.874 122.983,185.874C123.733,185.874 124.859,185.499 125.609,184.748L153.748,156.609C154.499,155.859 155.624,155.859 156.375,156.609L184.514,184.748C185.264,185.499 186.39,185.874 187.14,185.874C187.891,185.874 189.016,185.499 189.767,184.748L195.019,179.496C195.77,178.745 196.145,177.62 196.145,176.869C196.145,176.119 195.77,174.993 195.019,174.243L166.88,146.104Z"
        android:strokeColor="#00000000" android:strokeWidth="1"/>
</vector>

ic_thumb_vector_on

<vector android:height="33dp" android:viewportHeight="302"
    android:viewportWidth="302" android:width="33dp" xmlns:android="http://schemas.android.com/apk/res/android">
    <path android:name="background_on" android:fillColor="#FFFFFF" android:fillType="nonZero"
        android:pathData="M151,151m-150.25,0a150.25,150.25 0,1 1,300.5 0a150.25,150.25 0,1 1,-300.5 0"
        android:strokeAlpha="0.1" android:strokeColor="#000000" android:strokeWidth="0.5"/>
    <path android:name="icon_on" android:fillColor="#00B05A" android:fillType="evenOdd"
        android:pathData="M105.523,153.198C104.806,152.5 104.448,151.453 104.448,150.754C104.448,150.056 104.806,149.009 105.523,148.31L110.536,143.422C111.968,142.026 114.117,142.026 115.549,143.422L115.907,143.772L135.602,164.371C136.318,165.069 137.393,165.069 138.109,164.371L186.093,115.841L186.451,115.841C187.883,114.444 190.032,114.444 191.464,115.841L196.477,120.728C197.91,122.125 197.91,124.22 196.477,125.616L139.183,183.573C138.467,184.272 137.751,184.621 136.676,184.621C135.602,184.621 134.886,184.272 134.17,183.573L106.239,154.246L105.523,153.198Z"
        android:strokeColor="#00000000" android:strokeWidth="1"/>
</vector>

也许我/我在 gradle 文件中遗漏了一些东西？

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "...customswitch"
        minSdkVersion 22
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.core:core-ktx:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

我希望这个视图能够加载并且不会在视图初始化时抛出错误。

标签： android-studiokotlin

解决方案

似乎您的switch_track_animated_selector没有任何没有任何 id 的默认状态。您可以尝试添加此状态。这在类似的情况下帮助了我

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