Android：在使用自定义drawable时，在预先Lollipop（SDK 16）上膨胀类ImageView时出错？

Question

我只是testet我的应用程序一个SDK 16设备上，并在模拟器上和两次我得到以下错误：

E/AndroidRuntime: FATAL EXCEPTION: main 
                      android.view.InflateException: Binary XML file line #9: Error inflating class ImageView 
                       at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
                       at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
                       at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
                       at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
                       at com.eliburgi.foodallergydiary.ui.diarypage.adapters.DrinkEntryBulletAdapter.onCreateViewHolder(DrinkEntryBulletAdapter.java:53) 
                       at com.eliburgi.foodallergydiary.ui.diarypage.adapters.DrinkEntryBulletAdapter.onCreateViewHolder(DrinkEntryBulletAdapter.java:23) 
                       at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6367) 
                       at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5555) 
                       at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5440) 
                       at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5436) 
                       at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2224) 
                       at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1551) 
                       at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511) 
                       at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595) 
                       at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3583) 
                       at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3025) 
                       at android.view.View.measure(View.java:15172) 
                       at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934) 
                       at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973) 
                       at android.view.View.measure(View.java:15172) 
                       at android.support.v7.widget.RecyclerView$LayoutManager.measureChildWithMargins(RecyclerView.java:8636) 
                       at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1577) 
                       at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511) 
                       at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595) 
                       at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3583) 
                       at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3312) 
                       at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3844) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.java:4364) 
                       at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 
                       at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507) 
                       at android.widget.LinearLayout.onLayout(LinearLayout.java:1420) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.java:4364) 
                       at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1795) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.java:4364) 
                       at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.java:4364) 
                       at android.support.design.widget.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:131) 
                       at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42) 
                       at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1391) 
                       at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:870) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.java:4364) 
                       at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:1193) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.java:4364) 
                       at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
                       at android.view.View.layout(View.java:13754) 
                       at android.view.ViewGroup.layout(ViewGroup.jav 

在SDK 21及以上的一切工作正常，但对于早期版本程序无法解析如下ImageView的：

<ImageView 
     style="@style/BulletListItemIcon.Drink" 
     android:layout_gravity="center_vertical" 
     android:layout_marginLeft="@dimen/margin_left_diary_entry_bullet_keyline" 
     android:layout_marginStart="@dimen/margin_left_diary_entry_bullet_keyline" /> 

在styles.xml：

<style name="BulletListItemIcon"> 
     <item name="android:layout_width">@dimen/icon_small</item> 
     <item name="android:layout_height">@dimen/icon_small</item> 
    </style> 

<style name="BulletListItemIcon.Drink"> 
     <item name="srcCompat">?attr/iconBackgroundDrink</item> 
    </style> 

?attr/iconBackgroundDrink在AppTheme定义用于此应用：

<item name="iconBackgroundDrink">@drawable/bg_drink_icon_gradient</item> 

在bg_drink_icon_gradient.xml：

<style name="BulletListItemIcon.Drink"> 
     <item name="srcCompat">?attr/colorPrimary</item> 
    </style> 

它，即使使用SVG绘制的作品：

<shape android:shape="oval" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 

    <gradient xmlns:android="http://schemas.android.com/apk/res/android" 
    android:angle="135" 
    android:startColor="@color/drink_gradient" 
    android:endColor="@color/drink_gradient_dark" 
    android:type="linear" /> 

    <stroke android:color="@color/icon_border" android:width="@dimen/border_width_icons"/> 

</shape> 

不知怎的，使用一种颜色，而不是被拉伸时，一切工作正常

<style name="BulletListItemIcon.Drink"> 
     <item name="srcCompat">@drawable/ic_profile</item> 
    </style> 

在我的gradle app's构建我设置vectorDrawables.useSupportLibrary = true：

android { 
    compileSdkVersion 25 
    buildToolsVersion "25.0.1" 
    defaultConfig { 
     applicationId "com.eliburgi.foodallergydiary" 
     minSdkVersion 16 
     targetSdkVersion 25 
     versionCode 1 
     versionName "1.0" 
     testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 
     vectorDrawables.useSupportLibrary = true 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 
    compileOptions { 
     sourceCompatibility JavaVersion.VERSION_1_8 
     targetCompatibility JavaVersion.VERSION_1_8 
    } 
} 

使用上述风格的颜色或SVG绘制的ImageView的工作正常，但它无法使用自定义绘制。我不知道为什么这不起作用，所以我会很感激任何提示和答案，谢谢:)

Answer 1

似乎是我的自定义XML可绘制的一些错误。我评论了中风标签，它工作正常。我会尝试一些有什么缺失，并让你知道。

<shape xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="oval"> 
    <solid android:color="@color/blue"/> 
    <!--<stroke android:color="@color/icon_border" android:width="@dimen/border_width_icons"/>--> 
</shape> 

如果有人知道什么是错的，请让我知道。

编辑：我想我知道是什么导致错误。 It's所有自定义XML可绘中风标签使用下列颜色定义that's：

<color name="icon_border">?android:colorBackground</color> 

任何人都可以请向我解释为什么不上SDK 16工作吗？

编辑：它现在的作品。我简单地更换上面的颜色定义有：

<color name="app_background">##FFFAFAFA</color> 
<color name="icon_border">@color/app_background</color> 

从来就设定主题属性android:backgroundColor我的色彩app_background。

感谢您的帮助:)

Answer 2

我一直在遇到同样的问题。解决的办法是用android.support.v7.widget.AppCompatImageView替换ImageView