由网友(＜从不低头＞)分享简介：我有一个活动WelcomeActivity.java在那里有一个按钮bContinue。在按钮的OnClick方法，我想这个.. I've an activity WelcomeActivity.java in which theres a button bContinue. In the OnClick metho...

我有一个活动WelcomeActivity.java在那里有一个按钮bContinue。在按钮的OnClick方法，我想这个..

I've an activity WelcomeActivity.java in which theres a button bContinue. In the OnClick method of the button, I tried this..

startActivity(new Intent(this, MenuItemDetailActivity.class));
//startActivity(new Intent("com.resto.demo.activity.MENUITEMLISTACTIVITY"));

既不上述2行的工作。相反，他们给我的NullPointerException＆安培;程序结束abruptly..I找不到的问题..是在清单或我的电话的问题？

neither of the above 2 lines work. instead they give me NullPointerException & the program ends abruptly..I cant find the problem.. is the problem in manifest or my call?

<activity
   android:name="com.resto.demo.activity.MenuItemListActivity"
   android:label="@string/title_menuitem_list" >
   <intent-filter>
       <action android:name="com.resto.demo.activity.MENUITEMLISTACTIVITY" />
       <category android:name="android.intent.category.DEFAULT" />
   </intent-filter>
</activity>

MenuItemListActivity是主/详细流程的一部分。感谢名单你。还告诉我，如果我的问题是不理解。任何帮助/建议是值得欢迎的：）

MenuItemListActivity is the part of master/detail flow. Thanx you. Also tell me if my problem is not understood. Any help/suggestion is welcome :)

推荐答案

编辑清单

 <application 
    <activity
       android:name="com.resto.demo.activity.MenuItemListActivity"
       android:label="@string/title_menuitem_list" >
       <intent-filter>
           <action android:name="com.resto.demo.activity.MENUITEMLISTACTIVITY" />
           <category android:name="android.intent.category.DEFAULT" />
       </intent-filter>
    </activity>
    <activity android:name="com.resto.demo.activity.MenuItemDetailActivity"/>
 </application>

和它添加到OnClick事件

And add this to OnClick event

startActivity(new Intent(MenuItemListActivity.this, MenuItemDetailActivity.class));