android - 2.3 崩溃应用程序中的 fragment

Question

我正在尝试使用 android.support v4 jar 在 2.2/2.3 android 项目中实现 fragment ，但它一直崩溃并给我这个错误:

06-07 14:23:43.774: E/AndroidRuntime(3085): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{mike.android.ie/mike.android.ie.ActivityView}: java.lang.ClassNotFoundException: mike.android.ie.ActivityView in loader dalvik.system.PathClassLoader[/data/app/mike.android.ie-1.apk]

我在代码中还有其他 fragment ，但已将其注释掉以尝试让一个 fragment 正常工作，如果您能帮助我，我将不胜感激。

我正在使用的类是:

ActivityView.java

package mike.android.ie;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;

public class ActivityView extends FragmentActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
 }
}

和ma​​in.xml:

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

<RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content">

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    android:name="mike.android.ie.ImageViewFragment" android:layout_width="200dip"
    android:layout_height="wrap_content" android:id="@+id/image_fragment" 
    android:layout_alignParentTop="true"

    />

</RelativeLayout>

然后我有一个ImageViewFragment.java:

package mike.android.ie;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

public class ImageViewFragment extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    ImageView image = (ImageView) inflater.inflate(R.layout.imagefragment, container, false);

    return image;

}

}

和imagefragment.xml:

<?xml version="1.0" encoding="utf-8"?>

<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/img"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:src="@drawable/myimage01" />

list .xml

<?xml version="1.0" encoding="utf-8"?>

<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.INTERNET"/>

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <activity
        android:name=".ActivityView"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <activity android:name=".ImageViewFragment" android:screenOrientation="landscape"
        android:configChanges="orientation" />
    <activity android:name=".TickerFragment" android:screenOrientation="landscape"
        android:configChanges="orientation" />
    <activity android:name=".WebViewFragment" android:screenOrientation="landscape"
        android:configChanges="orientation" />
    <activity android:name=".VideoViewFragment" android:screenOrientation="landscape"
        android:configChanges="orientation" />
</application>

Answer 1

错误:mike.android.ie/mike.android.ie.ActivityView 看起来不像标准 fragment compa 库。您包含的任何其他库是否会导致此错误？