Question

我在尝试启动FragmentActivity时不断获得NullPointer。

这是nullpointer im getting。

09-05 14:44:21.550: ERROR/AndroidRuntime(19409): FATAL EXCEPTION: main
09-05 14:44:21.550: ERROR/AndroidRuntime(19409): java.lang.NullPointerException
09-05 14:44:21.550: ERROR/AndroidRuntime(19409):     at com.fttech.youtubeReaults.searchYoutube(youtubeReaults.java:182)
09-05 14:44:21.550: ERROR/AndroidRuntime(19409):     at com.fttech.youtubeReaults.onActivityCreated(youtubeReaults.java:59)
09-05 14:44:21.550: ERROR/AndroidRuntime(19409):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:760)
09-05 14:44:21.550: ERROR/AndroidRuntime(19409):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:933)
09-05 14:44:21.550: ERROR/AndroidRuntime(19409):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:578)
09-05 14:44:21.550: ERROR/AndroidRuntime(19409):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1219)

09-05 14：44：21.550：ERROR / AndroidRuntime（19409）：在android.support.v4.app.FragmentManagerImpl $ 1.run（FragmentManager.java:380） 09-05 14：44：21.550：ERROR / AndroidRuntime（19409）：在android.os.Handler.handleCallback（Handler.java:587）

NullPointer指着我......

@Override
public void onActivityCreated(Bundle state){
    super.onActivityCreated(state);

    search = AccessibleYouTube_Fragment.search;

    ((TextView) getView().findViewById(R.id.textViewSearchResultTitle))
            .setText("Captioned search results for " + search);
            //NullPointer is pointing me to this line
    ArrayList<YouTubeResult> ytResults = searchYoutube(search);

我在这里做错了吗？

Answer 1

你的代码中有人为空，你试图访问它......

在Nullpointer上我建议你.......................

System.out.println（“搜索”+搜索）; ..

。并打印AccessibleYouTube_Fragment.search，还有textview有些东西是空的.................

使用List启动FragmentActivity时是否为NullPointer？

1 个答案: