与兼容包的Android充气片段 [英] inflating fragments with compatibility package android
问题描述
我试图夸大包含片段
使用向后兼容包的布局。我把jar文件并把它放在我的项目的libs文件夹。我伸出片段,然后试图通过该活动的设置内容查看到
<的LinearLayout
的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT
机器人:方向=垂直>
<片段
类=com.test.fragments.AdFragment
机器人:layout_width =FILL_PARENT
机器人:layout_height =WRAP_CONTENT/>< / LinearLayout中>
但是,当我设置的内容视图失败了 ClassNotFoundException的
的片段标记。
这里是logcat的输出。
了java.lang.RuntimeException:无法启动活动ComponentInfo {}:\
android.view.InflateException:二进制XML文件中的行#51:\
错误充气类片段
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1777)
在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1793)
在android.app.ActivityThread.access $ 1500(ActivityThread.java:123)
在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:939)
在android.os.Handler.dispatchMessage(Handler.java:99)
在android.os.Looper.loop(Looper.java:123)
在android.app.ActivityThread.main(ActivityThread.java:3848)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:507)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:841)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
在dalvik.system.NativeStart.main(本机方法)
致:android.view.InflateException:二进制XML文件中的行#51:\
错误充气类片段
在android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
在android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
在android.view.LayoutInflater.inflate(LayoutInflater.java:408)
在android.view.LayoutInflater.inflate(LayoutInflater.java:320)
在android.view.LayoutInflater.inflate(LayoutInflater.java:276)
在com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:211)
在android.app.Activity.setContentView(Activity.java:1657)
在com.test.base.activities.TabbedStoreActivity.onCreate(TabbedStoreActivity.java:46)
在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1731)
... 11更多
致:抛出java.lang.ClassNotFoundException:装载机\ android.view.fragment
dalvik.system.PathClassLoader [/system/framework/com.google.android.maps.jar:\
/data/app/com.test.test.apk]
在dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
在java.lang.ClassLoader.loadClass(ClassLoader.java:551)
在java.lang.ClassLoader.loadClass(ClassLoader.java:511)
在android.view.LayoutInflater.createView(LayoutInflater.java:471)
在android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
在com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
在android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
... 20个
请确保您的活动是从 FragmentActivity
继承,否则<片断>
不起作用。 这里是证明这是一个示例项目。
I am trying to inflate a layout containing a Fragment
using the backwards compatibility package. I took the jar file and placed it in the libs folder of my project. I extended Fragment and then tried to inflate it by setting the contentView of the Activity to
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<fragment
class="com.test.fragments.AdFragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/></LinearLayout>
But when I set the content view it fails with a ClassNotFoundException
for the fragment tag.
Here is the logcat output.
java.lang.RuntimeException: Unable to start activity ComponentInfo{}: \
android.view.InflateException: Binary XML file line #51: \
Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1777)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1793)
at android.app.ActivityThread.access$1500(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3848)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #51: \
Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:211)
at android.app.Activity.setContentView(Activity.java:1657)
at com.test.base.activities.TabbedStoreActivity.onCreate(TabbedStoreActivity.java:46)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1731)
... 11 more
Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader \
dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar: \
/data/app/com.test.test.apk]
at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at android.view.LayoutInflater.createView(LayoutInflater.java:471)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
... 20 more
Make sure your activity is inheriting from FragmentActivity
, otherwise <fragment>
does not work. Here is a sample project demonstrating this.
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