错误充气类android.support.v4.view.ViewPager错误充气类android

2019-05-16 14:11发布

我一直在试图建立我的应用程序寻呼机上运行<uses-sdk android:minSdkVersion="10" android:targetSdkVersion="15" />我按照我写的代码, 这个博客帖子 。

XML的寻呼机活动:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <android.support.v4.view.ViewPager
        android:id="@+id/instructionsViewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" /> 
</LinearLayout>

代码适配器:

public class MyPagerAdapter extends PagerAdapter {

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return 2;
    }

    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
        return (arg0 == ((View) arg1));
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        ((ViewPager) container).removeView((View) object);
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        LayoutInflater inflater = (LayoutInflater) container.getContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        int resId = 0;
        switch (position) {
        case 1:
            resId = R.layout.instructions_page1;
            break;
        case 2:
            resId = R.layout.instructions_page2;
            break;
        }
        View view = inflater.inflate(resId, null);
        ((ViewPager) container).addView(view, 0);
        return view;
    }
}

代码活动

public class Instructions extends Activity {

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.instructions);

        MyPagerAdapter adapter = new MyPagerAdapter();
        ViewPager pager = (ViewPager) findViewById(R.id.instructionsViewPager);
        pager.setAdapter(adapter);
        pager.setCurrentItem(0);
    }
}

出于某种原因,当我运行这个程序,我得到这个下面的错误列表:

05-28 09:38:54.535: E/AndroidRuntime(18658): FATAL EXCEPTION: main
05-28 09:38:54.535: E/AndroidRuntime(18658): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.thepoosh/com.thepoosh.Instructions}: android.view.InflateException: Binary XML file line #7: Error inflating class android.support.v4.view.ViewPager
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.os.Looper.loop(Looper.java:123)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.ActivityThread.main(ActivityThread.java:3691)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at java.lang.reflect.Method.invokeNative(Native Method)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at java.lang.reflect.Method.invoke(Method.java:507)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at dalvik.system.NativeStart.main(Native Method)
05-28 09:38:54.535: E/AndroidRuntime(18658): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class android.support.v4.view.ViewPager
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.Activity.setContentView(Activity.java:1663)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at com.thepoosh.Instructions.onCreate(Instructions.java:11)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-28 09:38:54.535: E/AndroidRuntime(18658):    ... 11 more
05-28 09:38:54.535: E/AndroidRuntime(18658): Caused by: java.lang.ClassNotFoundException: android.support.v4.view.ViewPager in loader dalvik.system.PathClassLoader[/data/app/com.thepoosh-1.apk]
05-28 09:38:54.535: E/AndroidRuntime(18658):    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.createView(LayoutInflater.java:471)
05-28 09:38:54.535: E/AndroidRuntime(18658):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
05-28 09:38:54.535: E/AndroidRuntime(18658):    ... 20 more

所以,我知道它的失败,因为我使用的是android.support.v4.view.ViewPager ,我试着用,玩,改变为普通ViewPager和进口android.support.v13但它并没有帮助...

任何想法如何解决这一问题?

Answer 1:

确保你把你在一个共同的文件夹,库,比如在你的项目库。

右键单击罐子,然后选择构建路径,然后单击添加到构建路径。

这将您的库添加到您的项目。 如果一切正常,你可以看到它在项目生成的“文件夹”被称为“引用的库”



Answer 2:

转至Project → Properties → Java Build Path比选择Order and Export tab

设置android-support-v4.jar库检查,它向上到列表的顶部。 和清洁rebuild..It适用于大多数的情况下,



Answer 3:

当我们用新的ADT JARS应建立文件夹,名为“库”

然后库 - >用作源文件夹
和你的罐子>添加到构建路径。

http://android.foxykeep.com/dev/how-to-fix-the-classdefnotfounderror-with-adt-17



文章来源: Error inflating class android.support.v4.view.ViewPager