找不到显式的android.widged.VideoView

我有这样的错误，为什么

Unable to find explicit activity class {com.erjp.widget.VideoView} have you declared this activitiy in your androidManifest.xml?

我已经在

androidManifest.xml

中声明了我的类名

“VideoActivity”

，但为什么会出现这样的错误呢？ 有人能帮忙吗

<activity
    android:name="MainActivity"
    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="VideoActivity"
    android:label="@string/app_name"
    android:screenOrientation="landscape">
</activity>

这是LogCat：

10-28 07:48:14.620: E/AndroidRuntime(1999): FATAL EXCEPTION: main
10-28 07:48:14.620: E/AndroidRuntime(1999): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.erjp/android.widget.VideoView}; have you declared this activity in your AndroidManifest.xml?
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1618)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivityForResult(Activity.java:3370)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivityForResult(Activity.java:3331)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivity(Activity.java:3566)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivity(Activity.java:3534)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at com.erjp.MainActivity$ClickVideo.onClick(MainActivity.java:77)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.view.View.performClick(View.java:4204)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.view.View$PerformClick.run(View.java:17355)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.os.Handler.handleCallback(Handler.java:725)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.os.Handler.dispatchMessage(Handler.java:92)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.os.Looper.loop(Looper.java:137)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.ActivityThread.main(ActivityThread.java:5041)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at java.lang.reflect.Method.invokeNative(Native Method)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at java.lang.reflect.Method.invoke(Method.java:511)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at dalvik.system.NativeStart.main(Native Method)

---

由于缺少

com.erjp.widged.VideoView

，应用程序崩溃，这很可能是在

VideoActivity

的布局中引用的。因为正确的拼写是

widget

而不是

widged

，所以很可能您的包是正确的，但引用是错误的。

您确定要发布您的menifest文件代码并检查包名是否相似吗我已经在androidManifest中声明了类，请查看上面的内容否您没有这样做。查看我的回答它是真的

android.widget.VideoView

，关于widget没有错误

10-28 07:48:14.620: E/AndroidRuntime(1999): FATAL EXCEPTION: main
10-28 07:48:14.620: E/AndroidRuntime(1999): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.erjp/android.widget.VideoView}; have you declared this activity in your AndroidManifest.xml?
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1618)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivityForResult(Activity.java:3370)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivityForResult(Activity.java:3331)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivity(Activity.java:3566)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.Activity.startActivity(Activity.java:3534)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at com.erjp.MainActivity$ClickVideo.onClick(MainActivity.java:77)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.view.View.performClick(View.java:4204)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.view.View$PerformClick.run(View.java:17355)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.os.Handler.handleCallback(Handler.java:725)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.os.Handler.dispatchMessage(Handler.java:92)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.os.Looper.loop(Looper.java:137)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at android.app.ActivityThread.main(ActivityThread.java:5041)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at java.lang.reflect.Method.invokeNative(Native Method)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at java.lang.reflect.Method.invoke(Method.java:511)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-28 07:48:14.620: E/AndroidRuntime(1999):     at dalvik.system.NativeStart.main(Native Method)