android - 从 fragment 启动时无法找到明确的 Activity 类

Question

我有一个 fragment ，我正试图通过这样的按钮点击来启动另一个 Activity :

Intent i = new Intent(getActivity(), RoundPagerActivity.class);
// put extras
startActivity(i);

应用程序在调用 startActivity(i) 时崩溃并出现 Fatal Exception。这是日志:

08-24 22:08:12.625: D/AndroidRuntime(9865): Shutting down VM 
08-24 22:08:12.625: W/dalvikvm(9865): threadid=1: thread exiting with uncaught exception(group=0x40c231f8) 
08-24 22:08:12.720: E/AndroidRuntime(9865): FATAL EXCEPTION: main 
08-24 22:08:12.720: E/AndroidRuntime(9865): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.wilk.android.tablink/com.wilk.android.tablink.RoundPagerActivity}; have you declared this activity in your AndroidManifest.xml? 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1511) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1387) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.app.Activity.startActivityForResult(Activity.java:3190) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.support.v4.app.FragmentActivity.startActivityFromFragment(FragmentActivity.java:826) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.support.v4.app.Fragment.startActivity(Fragment.java:838) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at com.wilk.android.tablink.RoundListFragment.onListItemClick(RoundListFragment.java:94) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.support.v4.app.ListFragment$2.onItemClick(ListFragment.java:58) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.widget.AdapterView.performItemClick(AdapterView.java:292) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.widget.AbsListView.performItemClick(AbsListView.java:1175) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.widget.AbsListView$PerformClick.run(AbsListView.java:2703) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.widget.AbsListView$1.run(AbsListView.java:3456) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.os.Handler.handleCallback(Handler.java:605) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.os.Handler.dispatchMessage(Handler.java:92) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.os.Looper.loop(Looper.java:137) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at android.app.ActivityThread.main(ActivityThread.java:4507) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at java.lang.reflect.Method.invokeNative(Native Method) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at java.lang.reflect.Method.invoke(Method.java:511) 
08-24 22:08:12.720: E/AndroidRuntime(9865):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 
    08-24 22:08:12.720: E/AndroidRuntime(9865):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 
    08-24 22:08:12.720: E/AndroidRuntime(9865):     at dalvik.system.NativeStart.main(Native Method)

这是我的 list 文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.wilk.android.tablink"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Holo" >

        <!-- other activities -->

        <!-- activity that calls the pager activity -->
        <activity
            android:name="com.wilk.android.tablink.RoundListActivity"
            android:label="@string/app_name" >

        </activity>

        <!-- activity that is called -->
        <activity
            android:name="com.wilk.android.tablink.RoundPagerAcivity"
            android:label="@string/app_name" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.wilk.android.tablink.RoundListActivity" />

        </activity>

    </application>

</manifest>

奇怪的是我有另一个应用程序以完全相同的方式执行此操作而没有问题。 我在这里查看了其他问题，并且很确定我已经用尽了这些选择，至少是那些似乎适用的选择。我也尝试在新 Activity 中设置断点，但没有被击中。谁能看到我最近忽略的东西？

Answer 1

它在您的 list 中拼写错误。你有:android:name="com.wilk.android.tablink.RoundPagerAcivity" 它应该是 android:name="com.wilk.android.tablink.RoundPagerActivity" .

此外，我不知道这是否重要，但在我的应用程序中，我还有一个关于“详细信息” Activity 的属性，如下所示:

    <activity
        android:name="com.wilk.android.tablink.RoundPagerActivity"
        android:label="@string/app_name"
        android:parentActivityName="com.wilk.android.tablink.RoundListActivity">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.wilk.android.tablink.RoundListActivity" />
    </activity>