我想ArrayAdapter在我的课程中实现一个Fragment不扩展的课程Activity.
问题是传递给ArrayAdapter的构造函数的第一个参数.
ArrayAdapter<String> myAdapter = new ArrayAdapter<String>(<what place here>,android.R.layout.simple_list_item1,anyarraylist);
现在我应该怎么做第一个参数？我试图通过
getActivity().getApplicationContext()
在第一个参数但代码崩溃.
请帮帮我.
我的logcat:
03-17 03:33:08.029: E/AndroidRuntime(596): FATAL EXCEPTION: main
03-17 03:33:08.029: E/AndroidRuntime(596): java.lang.NullPointerException
03-17 03:33:08.029: E/AndroidRuntime(596): at com.search.pages.SearchResults.onCreateView(SearchResults.java:92)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:871)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:635)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:420)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.os.Handler.handleCallback(Handler.java:587)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.os.Handler.dispatchMessage(Handler.java:92)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.os.Looper.loop(Looper.java:123)
03-17 03:33:08.029: E/AndroidRuntime(596): at android.app.ActivityThread.main(ActivityThread.java:4627) …