我想在我的应用程序中使用悬浮操作按钮,为此,我获取了最新的支持库22.2.1,并将其作为库添加到我的应用程序中。我清理了该项目并没有出现错误。
然后我将以下代码放入我的xml布局中,但当我运行应用程序时,遇到了一个无法解决的错误。
这是我的xml代码:
这不是完整的代码,我在LinearLayout中还有其他视图,并在最后放置了FloatingActionButton。
当我运行我的应用程序时,我收到以下错误消息:
我做错了什么吗? 谢谢。
这是我的xml代码:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="4dp" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_margin="16dp"
android:clickable="true"
android:src="@drawable/ic_action_person" />
</LinearLayout>
</ScrollView>
这不是完整的代码,我在LinearLayout中还有其他视图,并在最后放置了FloatingActionButton。
当我运行我的应用程序时,我收到以下错误消息:
FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.karaj.project/com.karaj.project.FistActiivty}: android.view.InflateException: Binary XML file line #301: Error inflating class android.support.design.widget.FloatingActionButton
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #301: Error inflating class android.support.design.widget.FloatingActionButton
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:707)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:758)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at com.karaj.project.DrawerActivity.setContentView(DrawerActivity.java:73)
at com.karaj.project.FistActiivty.onCreate(FistActiivty.java:88)
at android.app.Activity.performCreate(Activity.java:5133)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
... 11 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.design.widget.FloatingActionButton" on path: DexPathList[[zip file "/data/app/com.karaj.persiandesigners-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.karaj.persiandesigners-1, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.view.LayoutInflater.createView(LayoutInflater.java:559)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:696)
... 20 more
我做错了什么吗? 谢谢。