尝试替换片段时出错，片段事务中的活动已销毁

nuypyhwy  于 2021-07-13  发布在  Java
关注(0)|答案(1)|浏览(288)

我试图用另一个片段替换我当前的片段，当我在一个可解释视图中单击一个图像时，当我单击该图像时，应用程序崩溃，并且logcat说这是由于活动被破坏而导致的。
主活动.java

  1. public class MainActivity extends FragmentActivity {
  3.     @Override
  4.     protected void onCreate(Bundle savedInstanceState) {
  5.         super.onCreate(savedInstanceState);
  6.         setContentView(R.layout.activity_main);
  8.         // Check that the activity is using the layout version with
  9.         // the fragment_container FrameLayout
  10.         if (findViewById(R.id.fragment_container) != null) {
  12.             // However, if we're being restored from a previous state,
  13.             // then we don't need to do anything and should return or else
  14.             // we could end up with overlapping fragments.
  15.             if (savedInstanceState != null) {
  16.                 return;
  17.             }
  19.             // Create a new Fragment to be placed in the activity layout
  20.             QuestionsFragment firstFragment = new QuestionsFragment();
  22.             // In case this activity was started with special instructions from an
  23.             // Intent, pass the Intent's extras to the fragment as arguments
  24.             firstFragment.setArguments(getIntent().getExtras());
  26.             // Add the fragment to the 'fragment_container' FrameLayout
  27.             getFragmentManager().beginTransaction()
  28.                     .add(R.id.fragment_container, firstFragment).commit();
  29.         }
  31.     }
  33.     public void thanksFragment(){
  34.         //Adicionando código responsável pela transição do
  35.         //Fragmento para tela de agradecimento
  36.         ThanksFragment thanks = new ThanksFragment();
  38.         FragmentTransaction transaction = getFragmentManager().beginTransaction();
  39.         // Replace whatever is in the fragment_container view with this fragment,
  40.         // and add the transaction to the back stack if needed
  41.         transaction.replace(R.id.fragment_container, thanks);
  42.         transaction.addToBackStack(null);
  43.         // Commit the transaction
  44.         transaction.commit();
  45.     }
  46. }

问题碎片.java

  1. public class QuestionsFragment extends Fragment{
  3.     MyExpandableListAdapter listAdapter;
  4.     ExpandableListView expListView;
  5.     List<String> listDataHeader;
  6.     HashMap<String, Emoticons> listDataChild;
  8.     //private ArrayAdapter<String> mQuestionAdapter;
  10.     public View onCreateView(LayoutInflater inflater, ViewGroup container,
  11.                              Bundle savedInstanceState) {
  13.         View rootView = inflater.inflate(R.layout.questions_fragment, container, false);
  15.         //Get the ListView
  16.         expListView = (ExpandableListView) rootView.findViewById(R.id.list_view);
  18.         //Prepare ListData
  19.         prepareListData();
  21.         listAdapter = new MyExpandableListAdapter(QuestionsFragment.this.getActivity().getApplicationContext(), listDataHeader, listDataChild);
  23.         expListView.setAdapter(listAdapter);
  25.         // Inflate the layout for this fragment
  26.         return rootView;
  27.     }
  29.     /*
  30.      * Preparing the list data
  31.      */
  32.     public void prepareListData() {
  34.         listDataHeader = new ArrayList<String>();
  35.         listDataChild = new HashMap<String, Emoticons>();
  37.         // Adding child data
  38.         listDataHeader.add("Rapidez e Eficiência no Check in:");
  39.         listDataHeader.add("Rapidez e Eficiência no Check out:");
  40.         listDataHeader.add("Cordialidade:");
  41.         listDataHeader.add("Limpeza do Apartamento:");
  42.         listDataHeader.add("Conforto do Apartamento:");
  43.         listDataHeader.add("Artigos de Banho:");
  44.         listDataHeader.add("Café da Manha:");
  45.         listDataHeader.add("Refeições:");
  46.         listDataHeader.add("Serviços de Internet:");
  47.         listDataHeader.add("Serviços de Estacionamento:");
  49.         // Adding child data
  50.         listDataChild.put(listDataHeader.get(0), new Emoticons());
  51.         listDataChild.put(listDataHeader.get(1),new Emoticons());
  52.         listDataChild.put(listDataHeader.get(2),new Emoticons());
  53.         listDataChild.put(listDataHeader.get(3),new Emoticons());
  54.         listDataChild.put(listDataHeader.get(4),new Emoticons());
  55.         listDataChild.put(listDataHeader.get(5),new Emoticons());
  56.         listDataChild.put(listDataHeader.get(6),new Emoticons());
  57.         listDataChild.put(listDataHeader.get(7),new Emoticons());
  58.         listDataChild.put(listDataHeader.get(8),new Emoticons());
  59.         listDataChild.put(listDataHeader.get(9),new Emoticons());
  61.     }
  63. }

myexpandablelistadapter.java文件

  1. public class MyExpandableListAdapter extends BaseExpandableListAdapter {
  3.     private static int img1;
  4.     private static int img2;
  5.     private static int img3;
  6.     private static int img4;
  7.     private static int img5;
  9.     private Context _context;
  10.     private List<String> _listDataHeader; // header titles
  11.     // child data in format of header title, child title
  12.     private HashMap<String, Emoticons> _listDataChild;
  14.     public MyExpandableListAdapter(Context context, List<String> listDataHeader,
  15.                                  HashMap<String, Emoticons> listChildData) {
  16.         this._context = context;
  17.         this._listDataHeader = listDataHeader;
  18.         this._listDataChild = listChildData;
  20.     }
  22.     public long getChildId(int groupPosition, int childPosition) {
  23.         return childPosition;
  24.     }
  26.     public View getChildView(int groupPosition, final int childPosition,
  27.                              boolean isLastChild, View convertView, ViewGroup parent) {
  29.         if (convertView == null) {
  30.             LayoutInflater infalInflater = (LayoutInflater) this._context
  31.                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  32.             convertView = infalInflater.inflate(R.layout.emoticons_question_list_item, null);
  33.         }
  35.         //Linha Importante, pois instancio um objeto que receberá o valor do Objeto armazenado no HashMap
  36.         final Emoticons getQuestionEmoticons = (Emoticons)_listDataChild.get(_listDataHeader.get(groupPosition));
  38.         final ImageView imgBad = (ImageView) convertView.findViewById(R.id.image_bad);
  39.         imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  41.         final ImageView imgBad2 = (ImageView) convertView.findViewById(R.id.image_bad2);
  42.         imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  44.         final ImageView imgNormal = (ImageView) convertView.findViewById(R.id.image_normal);
  45.         imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  47.         final ImageView imgGood = (ImageView) convertView.findViewById(R.id.image_good);
  48.         imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  50.         final ImageView imgExcelent = (ImageView) convertView.findViewById(R.id.image_excelent);
  51.         imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  53.         //Aqui foram adicionados os listners
  54.         imgBad.setClickable(true);
  55.         imgBad.setOnClickListener(new View.OnClickListener() {
  56.             @Override
  57.             public void onClick(View v) {
  58.                 getQuestionEmoticons.changeEmoticons(1);
  60.                 imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  61.                 imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  62.                 imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  63.                 imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  64.                 imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  66.                 MainActivity main = new MainActivity();
  67.                 main.thanksFragment();
  68.             }
  69.         });
  71.         imgBad2.setClickable(true);
  72.         imgBad2.setOnClickListener(new View.OnClickListener() {
  73.             @Override
  74.             public void onClick(View v) {
  75.                 getQuestionEmoticons.changeEmoticons(2);
  77.                 imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  78.                 imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  79.                 imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  80.                 imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  81.                 imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  82.             }
  83.         });
  85.         imgNormal.setClickable(true);
  86.         imgNormal.setOnClickListener(new View.OnClickListener() {
  87.             @Override
  88.             public void onClick(View v) {
  89.                 getQuestionEmoticons.changeEmoticons(3);
  91.                 imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  92.                 imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  93.                 imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  94.                 imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  95.                 imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  96.             }
  97.         });
  99.         imgGood.setClickable(true);
  100.         imgGood.setOnClickListener(new View.OnClickListener() {
  101.             @Override
  102.             public void onClick(View v) {
  103.                 getQuestionEmoticons.changeEmoticons(4);
  105.                 imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  106.                 imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  107.                 imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  108.                 imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  109.                 imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  110.             }
  111.         });
  113.         imgExcelent.setClickable(true);
  114.         imgExcelent.setOnClickListener(new View.OnClickListener() {
  115.             @Override
  116.             public void onClick(View v) {
  117.                 getQuestionEmoticons.changeEmoticons(5);
  119.                 imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  120.                 imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  121.                 imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  122.                 imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  123.                 imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  124.             }
  125.         });
  127.           return convertView;
  128.     }
  130.     public Object getGroup(int groupPosition) {
  131.         return this._listDataHeader.get(groupPosition);
  132.     }
  134.     @Override
  135.     public Object getChild(int groupPosition, int childPosition) {
  136.         return null;
  137.     }
  139.     public int getGroupCount() {
  140.         return this._listDataHeader.size();
  141.     }
  143.     @Override
  144.     public int getChildrenCount(int groupPosition) {
  145.         return 1;
  146.     }
  148.     public long getGroupId(int groupPosition) {
  149.         return groupPosition;
  150.     }
  152.     public View getGroupView(int groupPosition, boolean isExpanded,
  153.                              View convertView, ViewGroup parent) {
  154.         String headerTitle = (String) getGroup(groupPosition);
  155.         if (convertView == null) {
  156.             LayoutInflater infalInflater = (LayoutInflater) this._context
  157.                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  158.             convertView = infalInflater.inflate(R.layout.question_list_item, null);
  159.         }
  161.         TextView txtListGroup = (TextView) convertView
  162.                 .findViewById(R.id.question_list_item_textview);
  163.         txtListGroup.setText(headerTitle);
  165.         return convertView;
  166.     }
  168.     public boolean hasStableIds() {
  169.         return false;
  170.     }
  172.     public boolean isChildSelectable(int groupPosition, int childPosition) {
  173.         return true;
  174.     }
  176. }

我得到的错误是：

  1. FATAL EXCEPTION: main
  2.                                                                               Process: br.ind.uptech.princessfeedback, PID: 6631
  3.                                                                               java.lang.IllegalStateException: Activity has been destroyed
  4.                                                                                   at android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1365)
  5.                                                                                   at android.app.BackStackRecord.commitInternal(BackStackRecord.java:729)
  6.                                                                                   at android.app.BackStackRecord.commit(BackStackRecord.java:705)
  7.                                                                                   at br.ind.uptech.princessfeedback.MainActivity.thanksFragment(MainActivity.java:54)
  8.                                                                                   at 
  10.     br.ind.uptech.princessfeedback.MyExpandableListAdapter$1.onClick(MyExpandableListAdapter.java:96)
  11.                                                                                       at android.view.View.performClick(View.java:5242)
  12.                                                                                       at android.view.View$PerformClick.run(View.java:21156)
  13.                                                                                       at android.os.Handler.handleCallback(Handler.java:739)
  14.                                                                                       at android.os.Handler.dispatchMessage(Handler.java:95)
  15.                                                                                       at android.os.Looper.loop(Looper.java:145)
  16.                                                                                       at android.app.ActivityThread.main(ActivityThread.java:6862)
  17.                                                                                       at java.lang.reflect.Method.invoke(Native Method)
  18.                                                                                       at java.lang.reflect.Method.invoke(Method.java:372)
  19.                                                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
  20.                                                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

非常感谢！

Javaandroid

1条答案

按热度按时间
osh3o9ms

osh3o9ms1#

我想问题就在这里。你不应该自己动手。如果要从myexpandablelistadapter调用mainactivity中的方法，可以将活动引用传递给它。为了安全起见，您可以在questionsfragment中使用回调。

  1. //Aqui foram adicionados os listners
  2.     imgBad.setClickable(true);
  3.     imgBad.setOnClickListener(new View.OnClickListener() {
  4.         @Override
  5.         public void onClick(View v) {
  6.             getQuestionEmoticons.changeEmoticons(1);
  8.             imgBad.setImageResource(getQuestionEmoticons.getImgBad());
  9.             imgBad2.setImageResource(getQuestionEmoticons.getImgBad2());
  10.             imgNormal.setImageResource(getQuestionEmoticons.getImgNormal());
  11.             imgGood.setImageResource(getQuestionEmoticons.getImgGood());
  12.             imgExcelent.setImageResource(getQuestionEmoticons.getImgExcelent());
  14.             MainActivity main = new MainActivity();
  15.             main.thanksFragment();
  16.         }
  17.     });
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