膨胀类 ImageButton 时出错
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【中文标题】膨胀类 ImageButton 时出错【英文标题】：Error inflating class ImageButton 【发布时间】：2016-05-28 16:51:43 【问题描述】：我有一个应用程序，上面有 fragment 和 image button。问题是它在5.0 及以上工作，但不低于5.0。最小sdk版本是17。
不明白这里有什么问题。我有 2 个例外。
一个是RuntimeException，对应image button。
其次是 ResourceNotFoundException 用于 fab 选择器文件。
日志： 第一个例外--
java.lang.RuntimeException：无法启动活动 组件信息com.example.siddhi.timetablelayout/com.example.siddhi.timetablelayout.MainActivity： android.view.InflateException：二进制 XML 文件第 16 行：
错误膨胀类ImageButton
第二个例外--
原因：android.view.InflateException：二进制 XML 文件第 16 行：
上线：
主要片段的View view = inflater.inflate(R.layout.fragment_main, container, false);。
主要片段：
public class MainFragment extends Fragment
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private CharSequence Titles[]="Mon","Tue","Wed","Thu","Fri","Sat","Sun";
private int Numboftabs =7;
private SlidingTabLayout tabs;
private Intent i;
public MainFragment()
// Required empty public constructor
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_main, container, false);
setupUI(view);
return view;
void setupUI(View view)
FrameLayout fab = (FrameLayout)view.findViewById(R.id.main_fab);
ImageButton imageButton = (ImageButton)view.findViewById(R.id.imgbtn_fab);
imageButton.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
String day;
Boolean editMode = false;
if(tabs.getCurrentTab() == 0)
day = "Mon";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
else if(tabs.getCurrentTab() == 1)
day = "Tue";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
else if(tabs.getCurrentTab() == 2)
day = "Wed";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
else if(tabs.getCurrentTab() == 3)
day = "Thu";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
else if(tabs.getCurrentTab() == 4)
day = "Fri";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
else if(tabs.getCurrentTab() == 5)
day = "Sat";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
else if(tabs.getCurrentTab() == 6)
day = "Sun";
i = new Intent(getActivity(),AddEventActivity.class);
i.putExtra("day",day);
i.putExtra("EditMode",editMode);
startActivity(i);
Log.d("tab",tabs.getCurrentTab() + "");
);
mAdapter = new TabsPagerAdapter(getFragmentManager(),Titles,Numboftabs);
viewPager = (ViewPager)view.findViewById(R.id.pager);
viewPager.setAdapter(mAdapter);
tabs = (SlidingTabLayout)view.findViewById(R.id.tabs);
tabs.setDistributeEvenly(true);
tabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer()
@Override
public int getIndicatorColor(int position)
return getResources().getColor(R.color.tab_scroll_color);
);
tabs.setViewPager(viewPager);
工厂选择器：
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape android:shape="oval">
<solid android:color="?attr/colorAccent" />
</shape>
</item>
<item android:state_focused="true">
<shape android:shape="oval">
<solid android:color="?attr/colorAccent" />
</shape>
</item>
<item>
<shape android:shape="oval">
<solid android:color="?attr/colorAccent" />
</shape>
</item>
</selector>
主要片段：
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_
android:layout_ tools:context="com.adgatemedia.offerwallsdk.fragments.MainFragment">
<RelativeLayout
android:layout_
android:layout_>
<utils.SlidingTabLayout
android:id="@+id/tabs"
android:layout_
android:layout_
android:elevation="2dp"
android:background="?attr/colorPrimary"
android:layout_alignParentTop="true" />
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_
android:layout_
android:layout_below="@+id/tabs" />
<LinearLayout
android:orientation="horizontal"
android:layout_
android:layout_
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_gravity="bottom|end">
<include layout="@layout/myfab"/>
</LinearLayout>
</RelativeLayout>
</FrameLayout>
工厂：
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_fab"
android:layout_
android:layout_
android:layout_gravity="bottom|end">
<View
android:id="@+id/myfab_shadow"
android:layout_
android:layout_
android:layout_gravity="center"
android:background="@drawable/fab_shadow"
android:focusable="false" />
<ImageButton
android:id="@+id/imgbtn_fab"
android:layout_
android:layout_
android:layout_gravity="center"
android:background="@drawable/fab_selector"
android:cropToPadding="true"
android:padding="10dp"
android:src="@drawable/ic_add_white_36dp"
android:stateListAnimator="@animator/fab_elevation_selector" />
</FrameLayout>
完整的堆栈跟踪：
FATAL EXCEPTION: main
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfocom.example.siddhi.timetablelayout/com.example.siddhi.timetablelayout.MainActivity: android.view.InflateException: Binary XML file line #16: Error inflating class ImageButton
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5041)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #16: Error inflating class ImageButton
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.example.siddhi.timetablelayout.MainFragment.onCreateView(MainFragment.java:33)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1248)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1613)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:330)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:547)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1164)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.Activity.performStart(Activity.java:5114)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2153)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5041)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: Caused by: android.content.res.Resources$NotFoundException: File res/drawable/fab_selector.xml from drawable resource ID #0x7f020081
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.content.res.Resources.loadDrawable(Resources.java:1953)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.View.<init>(View.java:3330)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.widget.ImageView.<init>(ImageView.java:114)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.widget.ImageButton.<init>(ImageButton.java:87)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v7.widget.AppCompatImageButton.<init>(AppCompatImageButton.java:59)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v7.widget.AppCompatImageButton.<init>(AppCompatImageButton.java:55)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:107)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:938)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:992)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater$FactoryMerger.onCreateView(LayoutInflater.java:171)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.example.siddhi.timetablelayout.MainFragment.onCreateView(MainFragment.java:33)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1248)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1613)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:330)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:547)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1164)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.Activity.performStart(Activity.java:5114)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2153)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5041)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: Caused by: java.lang.UnsupportedOperationException: Can't convert to color: type=0x2
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.content.res.TypedArray.getColor(TypedArray.java:326)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.graphics.drawable.GradientDrawable.inflate(GradientDrawable.java:967)
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime: at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:885)
你能告诉我这里出了什么问题吗？
【问题讨论】：
请发布完整的堆栈跟踪，而不是部分。 请检查已编辑的问题。@Gabe Sechan 你能检查一下哪个文件夹包含fab_selector吗？
它的可绘制文件夹。@MustansarSaeed
你的@animator/fab_elevation_selector 是什么
【参考方案1】：
这个异常
02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime：引起：java.lang.UnsupportedOperationException： 无法转换为颜色：type=0x2 02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/AndroidRuntime：在 android.content.res.TypedArray.getColor(TypedArray.java:326) 02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/Android运行时：在 android.graphics.drawable.GradientDrawable.inflate(GradientDrawable.java:967) 02-17 05:42:39.445 3247-3247/com.example.siddhi.timetablelayout E/Android运行时：在 android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:885)
得出的结论是fab_selector 中的这条线<solid android:color="?attr/colorAccent" /> 是罪魁祸首。尝试将color改为HEX value，然后测试。
希望这会有所帮助。
【讨论】：
因为我的应用程序中有主题，所以我没有给出十六进制值。它在 5.0 及更高版本上运行。为什么这样？ @Mustansar Saeed 可能是 Post Lollipop API 处理这些操作，但 pre-lollipop 不包含这些功能。只是一个疯狂的猜测:) 这并不是真正的“答案”。如果已定义，应该可以使用如图所示的这个主题属性。 但是如何在主题更改时更改 fab 的颜色？如果我提供十六进制值，它不会改变吗？ @Mustnsar Saeed @DougStevenson：Sid 可以确认它是否解决了他的问题。【参考方案2】：是的。您需要创建一个类似“drawable-v21”的文件夹。
【讨论】：
【参考方案3】：我也遇到过这个问题，但我解决了。
在我的情况下，错误是我为 ImageButton 导入的 png 图像由 android studio 自动保存在 drawable-v24 中。我从那里复制了 png 并将其粘贴到 drawable 文件夹中。
【讨论】：
【参考方案4】：这是谷歌上的***结果，我想分享为我解决相同错误的原因（尽管与上述问题不同）
确保构建工具版本是最新的 我有一个矢量 src drawable 和一个高程值（仅限 API 21+）的组合，这似乎使它绊倒了。我为 v21 制作了一个单独的布局以具有高程值（但保持矢量可在任何地方绘制），这为我解决了它【讨论】：
【参考方案5】：image.png 的格式不正确。 我的解决方案： 我在我的电脑上安装了 greenshot 从我的屏幕上抓取图像 https://getgreenshot.org/ 然后我将图像保存为我的 res/drawable 中的 png 文件。 这对我有用
【讨论】：
【参考方案6】：解决了我的问题（rounded_corner_image_view.xml (v24)）：
android:background="@drawable/rounded_corner_image_view"
我的背景可绘制是 v24。创建了一个较低的可绘制对象和中提琴
【讨论】：
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