我有一个DialogFragment，除了发出一个Volley请求并将数据填充到RecyclerView之外什么都没有。我从片段启动（通过单击TextView链接）此对话框。当对话框第一次启动时，它会启动并执行它应该执行的操作，没有任何障碍。
然后我旋转屏幕，再次启动对话框，然后嗖！我受到了欢迎“IllegalStateException：活动已被破坏”。
关于这个错误的一个奇怪之处是我也在 DetailsFragment 内的适配器类的onBindViewHolder中启动了同样的DialogFragment，即使我将屏幕旋转十次，同样的对话框也会无故障地打开。
这是堆栈跟踪，
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: java.lang.IllegalStateException: Activity has been destroyed
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1515)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:638)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:617)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.support.v4.app.DialogFragment.show(DialogFragment.java:139)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at com.ozuf.poster.Fragment.DetailsFragment$9.onClick(DetailsFragment.java:474)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.text.method.LinkMovementMethod.onTouchEvent(LinkMovementMethod.java:217)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.widget.TextView.onTouchEvent(TextView.java:8464)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.View.dispatchTouchEvent(View.java:8808)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2581)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2607)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1779)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.app.Activity.dispatchTouchEvent(Activity.java:2846)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2568)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.View.dispatchPointerEvent(View.java:9003)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4209)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4072)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3627)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3680)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3646)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3763)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3654)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3820)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3627)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3680)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3646)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3654)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3627)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5910)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5884)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5855)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6000)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.os.MessageQueue.nativePollOnce(Native Method)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.os.MessageQueue.next(MessageQueue.java:143)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.os.Looper.loop(Looper.java:122)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5910)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at java.lang.reflect.Method.invoke(Native Method)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at java.lang.reflect.Method.invoke(Method.java:372)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)
07-06 16:56:31.164 2162-2162/com.ozuf.poster W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
这是DialogFragment
public class TagCatFragment extends DialogFragment {
private final String TAG = "TagCatFragment";
private static final String SLUG = "slug";
private static final String SOURCE = "source";
private static final String NAME = "name";
private List<TagCatItem> mTagCatItems = new ArrayList<>();
RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
LinearLayoutManager mLayoutManager;
OnTagCatPostClickedListener mTagCatPostClickedListener = sTagCatCallbacks;
private int pageNumber = 2;
public int getPageNumber() {
return pageNumber++;
}
public void setPageNumber(int pageNumber) {
this.pageNumber = pageNumber;
}
private String mSlug;
private String mSource;
private String mName;
Button cancelButton;
ProgressBar mProgressBar, mProgressBarB;
TextView header, errorText;
Button errorButton;
ImageView cloudOff;
JsonObjectRequest mJsonObjectRequest, moreJsonObjectRequest;
View view;
public TagCatFragment() {
// Required empty public constructor
}
public static TagCatFragment newInstance(String name, String slug, String source) {
TagCatFragment fragment = new TagCatFragment();
Bundle args = new Bundle();
args.putString(SLUG, slug);
args.putString(SOURCE, source);
args.putString(NAME, name);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mSlug = getArguments().getString(SLUG);
mSource = getArguments().getString(SOURCE);
mName = getArguments().getString(NAME);
Log.d(TAG, "Slug is " + mSlug + " and Source is " + mSource);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_tag_cat, container, false);
return view;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceStare) {
super.onViewCreated(view, savedInstanceStare);
cancelButton = (Button) view.findViewById(R.id.tagcat_cancel_button);
mProgressBar = (ProgressBar) view.findViewById(R.id.progress_circle);
mProgressBarB = (ProgressBar) view.findViewById(R.id.progress_circle_b);
header = (TextView) view.findViewById(R.id.tagcat_header);
mRecyclerView = (RecyclerView) view.findViewById(R.id.tagcat_recycler);
cloudOff = (ImageView) view.findViewById(R.id.cloud_off);
errorButton = (Button) view.findViewById(R.id.tagcat_retry);
errorText = (TextView) view.findViewById(R.id.tagcat_error_text);
mLayoutManager = new LinearLayoutManager(getActivity());
TagCatAdapter tagCatAdapter = new TagCatAdapter(mTagCatItems, getActivity());
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = tagCatAdapter;
mRecyclerView.addItemDecoration(new DividerItemDecoration(getActivity()));
mRecyclerView.setAdapter(mAdapter);
tagCatAdapter.setTagCatClickedListener(new UrlTagCatClickedListener() {
@Override
public void onUrlTagCatClicked(String postURL) {
Log.d(TAG, "I go the url and it is " + postURL);
mTagCatPostClickedListener.OnTagCatPostClicked(postURL);
dismiss();
}
});
mProgressBar.getIndeterminateDrawable().setColorFilter(ContextCompat.getColor(getActivity(), R.color.colorPrimaryDark), PorterDuff.Mode.SRC_IN);
mProgressBarB.getIndeterminateDrawable().setColorFilter(ContextCompat.getColor(getActivity(), R.color.colorPrimaryDark), PorterDuff.Mode.SRC_IN);
cancelButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
}
});
errorButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getTagCat();
}
});
getTagCat();
}
private void getTagCat() {
Log.d(TAG, "getTagCat called");
mProgressBar.setVisibility(View.VISIBLE);
cloudOff.setVisibility(View.GONE);
errorText.setVisibility(View.GONE);
errorButton.setVisibility(View.GONE);
String url = http://blah-blah-blah;
Log.d(TAG, "Url is " + url);
mJsonObjectRequest = new JsonObjectRequest(url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d(TAG, "getTagCat onResponse called");
if (mProgressBar != null) {
mProgressBar.setVisibility(View.GONE);
}
parseResponse(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "getTagCat onErrorResponse called");
if (mProgressBar != null) {
mProgressBar.setVisibility(View.GONE);
}
cloudOff.setVisibility(View.VISIBLE);
errorText.setVisibility(View.VISIBLE);
errorButton.setVisibility(View.VISIBLE);
}
});
int retrytimes = 2;
RetryPolicy policy = new DefaultRetryPolicy(DefaultRetryPolicy.DEFAULT_TIMEOUT_MS, retrytimes, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
mJsonObjectRequest.setRetryPolicy(policy);
//Creating request queue
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
//Adding request to the queue
requestQueue.add(mJsonObjectRequest);
}
private void parseResponse(JSONObject object) {
Log.d(TAG, "Parsing response");
try {
int post_found = object.getInt("found");
if (isAdded()) {
header.setText(getResources().getQuantityString(R.plurals.author_posts, post_found, post_found, mName));
header.setVisibility(View.VISIBLE);
Animation headAnim = AnimationUtils.loadAnimation(getActivity(), R.anim.slide_in_right);
header.setAnimation(headAnim);
}
Log.d(TAG, "found posts is " + post_found);
} catch (JSONException e) {
e.printStackTrace();
}
try {
JSONArray array = object.getJSONArray("posts");
for (int i = 0; i<array.length(); i++) {
TagCatItem tagCatItem = new TagCatItem();
JSONObject jsonObject;
jsonObject = array.getJSONObject(i);
tagCatItem.setPostTitle(jsonObject.getString("title"));
tagCatItem.setPostURL(jsonObject.getString("URL"));
SimpleDateFormat formatDate = new SimpleDateFormat("dd MMM, yy", Locale.getDefault());
SimpleDateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
String inputDateStr = jsonObject.getString("date");
try {
Date inputDate = inputFormat.parse(inputDateStr);
String postDateStr = formatDate.format(inputDate);
tagCatItem.setPostDate(postDateStr);
} catch (ParseException e) {
Log.d(TAG, "Error in Parsing date");
}
mTagCatItems.add(tagCatItem);
mAdapter.notifyItemRangeChanged(0, mAdapter.getItemCount());
}
} catch (JSONException e) {
e.printStackTrace();
}
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Log.d(TAG, "onCreateDialog called");
Dialog dialog = super.onCreateDialog(savedInstanceState);
dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
return dialog;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
Log.d(TAG, "onAttach called");
try {
mTagCatPostClickedListener = (OnTagCatPostClickedListener) context;
} catch (ClassCastException e) {
throw new ClassCastException(context.toString() + " must implement OnTagCatPostClickedListener");
}
}
@Override
public void onDetach() {
Log.d(TAG, "onDetach");
super.onDetach();
if (mJsonObjectRequest != null) {
if (!mJsonObjectRequest.isCanceled()) {
mJsonObjectRequest.cancel();
}
}
if (moreJsonObjectRequest != null) {
if (!moreJsonObjectRequest.isCanceled()) {
moreJsonObjectRequest.cancel();
}
}
}
public interface OnTagCatPostClickedListener {
void OnTagCatPostClicked (String tagcatLink);
}
private static OnTagCatPostClickedListener sTagCatCallbacks = new OnTagCatPostClickedListener() {
@Override
public void OnTagCatPostClicked(String tagcatLink) {
}
};
@Override
public void onActivityCreated(Bundle arg0) {
super.onActivityCreated(arg0);
getDialog().getWindow()
.getAttributes().windowAnimations = R.style.TagCatDialog;
}
}
这是我发布DialogFragment的片段
public class DetailsFragment extends Fragment{
//Skipped some codes
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.d(TAG, "onCreateView called");
url = getArguments().getString("post_link");
Log.d(TAG, "Post url is " + url);
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_details, container, false);
if (savedInstanceState != null) {
mFragment = getChildFragmentManager().getFragment(savedInstanceState, "mFragment");
gadData = savedInstanceState.getString("gadData");
mainPostStr = savedInstanceState.getString("mainPost");
if (mainPostStr != null) {
try {
mainPost = new JSONObject(mainPostStr);
parseJson(mainPost);
} catch (JSONException e) {
e.printStackTrace();
} else {
getPost()
}
return view;
}
private void getPost() {
Log.d(TAG, "getPost called");
if (idHasValue) {
Log.d(TAG, "Post has a value");
progressBar.setVisibility(View.VISIBLE);
}
String postJson = GET_URL + postID;
JsonObjectRequest postDetails = new JsonObjectRequest(Method.GET, postJson, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d(TAG, "onResponse for getPOst called");
parseJson(response);
mainPost = response;
if (progressBar != null) {
progressBar.setVisibility(View.GONE);
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "onErrorResponse for getPost called");
if (progressBar != null) {
progressBar.setVisibility(View.GONE);
}
if (sthWrongAlert != null) {
sthWrongAlert.show();
}
}
});
int retrytimes = 2;
RetryPolicy policy = new DefaultRetryPolicy(DefaultRetryPolicy.DEFAULT_TIMEOUT_MS, retrytimes, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
postDetails.setRetryPolicy(policy);
//Creating requestqueue
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
//Adding request queue
requestQueue.add(postDetails);
}
private void parseJson(JSONObject object) {
Log.d(TAG, "Parsing Json");
try {
JSONObject author = object.getJSONObject("author");
SimpleDateFormat formatDate = new SimpleDateFormat("dd MMMM, yyyy", Locale.getDefault());
SimpleDateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
String inputDateStr = object.getString("date");
Log.d(TAG, "post date is " + inputDateStr);
String postDateStr = null;
try {
Date inputDate = inputFormat.parse(inputDateStr);
postDateStr = formatDate.format(inputDate);
} catch (ParseException e) {
Log.d(TAG, "Error in Parsing date");
}
if (isAdded()) {
String rawAuthor = String.format(getResources().getString(R.string.post_by), name, postDateStr);
int i1 = rawAuthor.indexOf(" by ");
int i2 = rawAuthor.indexOf(" on ");
postAuthorDate.setText(rawAuthor, TextView.BufferType.SPANNABLE);
postAuthorDate.setMovementMethod(LinkMovementMethod.getInstance());
postAuthorDate.setHighlightColor(ContextCompat.getColor(getActivity(), R.color.nav_bg));
Spannable spannable = (Spannable)postAuthorDate.getText();
ClickableSpan clickableSpan = new ClickableSpan() {
@Override
public void onClick(View widget) {
Log.d(TAG, "I was clicked");
//mOnTagCatClickedListener.OnTatCatClicked(name, authorId, "Author");
TagCatFragment tagCatFragment = TagCatFragment.newInstance(name, authorId, "Author");
try {
tagCatFragment.show(getChildFragmentManager(), "TagCAatFragment"); // This causes IllegalStateException but the one in onBindViewHolder below doesn't.
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
};
spannable.setSpan(clickableSpan, i1+4, i2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Skipped some codes
} catch (JSONException w) {
w.printStackTrace();
}
}public class TagAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
// Skipped some codes
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
final TagItem tagItem = mTagItems.get(position);
((TextViewHolder) holder).tagName.setText(tagItem.getTagName());
((TextViewHolder) holder).tagName.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//mOnTagCatClickedListener.OnTatCatClicked(tagItem.getTagName(), tagItem.getTagSlug(), "Tag");
TagCatFragment tagCatFragment = TagCatFragment.newInstance(tagItem.getTagName(), tagItem.getTagSlug(), "Tag");
try {
tagCatFragment.show(getChildFragmentManager(), "TagCatFragment");
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
});
}
}
}
尝试过的解决方案：
我尝试过热门的Marcus Forsell Stahre soluion。
我在 DetailsFragment
中覆盖onDetach@Override
public void onDetach() {
super.onDetach();
try {
Field childFragmentManager = Fragment.class.getDeclaredField("mChildFragmentManager");
childFragmentManager.setAccessible(true);
childFragmentManager.set(this, null);
} catch (NoSuchFieldException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
但这不起作用。
答案 0 :(得分：1)
尝试将DialogFragment修改为此
//allows the DialogFragment to automatically recreate itself upon rotation
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
// reinitialize the listener if need be still in DialogFragment
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
Log.v(TAG, "onAttach");
try {
if (activity != null)
mTagCatPostClickedListener = (OnTagCatPostClickedListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnTagCatPostClickedListener");
}
}
并最小化DetailsFragment中创建的DialogFragment实例的数量
protected static TagCatFragment tagCatFragment;
private void parseJson(JSONObject jsonObject) {
//your json stuff here
if (tagCatFragment == null)
tagCatFragment = TagCatFragment.newInstance("xxx", "yyyy",
"Author");
button.setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View arg0) {
try {
tagCatFragment.show(getChildFragmentManager(),
"TagCatFragment");
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
});
}
不确定保存mFragment实例的位置。
但是，您可能希望在onDestroy方法的DialogFragment中保留数据。让我知道事情的后续。