您好，我在使用带有 fragment 的 AppCompatActivity 时遇到问题
我已经用 AppCompatActivity 扩展了一个处理 fragment 的类，当用户发送应用程序后台并等待几分钟然后将应用程序带到前台时，就会出现问题。除了那种情况它根本不会崩溃。 (有一些不必要的代码仍在开发中，请勿关注)
任何帮助将不胜感激，我已经在这一点上坚持了好几天了。
如果需要其他任何内容，我可以更新问题并添加它们
public class SurveyMainFragment extends AppCompatActivity{
private Toolbar toolbar;
private Fragment surveyListFragment;
private Logger Log;
private SurveyResponseObj surveyResponseObj;
@Bind(R.id.RelativeSurveyMainFragmentSurveys)
RelativeLayout surveyTab;
@Bind(R.id.RelativeSurveyMainFragmentProfile)
RelativeLayout profileTab;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.survey_main_fragment);
Log = Logger.getLogger(SurveyMainFragment.class);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setVisibility(View.GONE);
ButterKnife.bind(this);
surveyTab.setSelected(true);
profileTab.setSelected(false);
Intent i = getIntent();
if (i != null) {
surveyResponseObj = i.getParcelableExtra("SurveyResponseList");
}
if (surveyResponseObj != null) {
}
surveyListFragment = new SurveyListFragment();
displayFirstTimeUserFragment();
}
@OnClick(R.id.RelativeSurveyMainFragmentSurveys)
void surveysFragment() {
surveyTab.setSelected(true);
profileTab.setSelected(false);
}
@OnClick(R.id.RelativeSurveyMainFragmentProfile)
void profileFragment() {
surveyTab.setSelected(false);
profileTab.setSelected(true);
}
protected void displayFirstTimeUserFragment() {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
if (surveyListFragment.isAdded()) { // if the fragment is already in container
ft.show(surveyListFragment);
} else { // fragment needs to be added to frame container
Bundle bundle = new Bundle();
bundle.putParcelable("surveyResponse", surveyResponseObj);
surveyListFragment.setArguments(bundle);
ft.add(R.id.fragment_survey_place, surveyListFragment, "SurveyListFragment");
}
ft.commit();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
Log.i("onSaved"+outState.toString());
// outState.putInt("someVarA", someVarA);
// outState.putString("someVarB", someVarB);
}
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
Log.i("onRestoreInstanceState" + savedInstanceState.toString());
displayFirstTimeUserFragment();
// someVarA = savedInstanceState.getInt("someVarA");
// someVarB = savedInstanceState.getString("someVarB");
}
@Override
public void onResume() {
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
这是survey_main_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:id="@+id/RelativeSurveysMainFragmentRoot"
tools:context="com.example.app.PersonalityTestFlow.SurveyMainFragment">
<include layout="@layout/tool_bar" />
<include layout="@layout/content_survey_main" />
</android.support.design.widget.CoordinatorLayout>
这是内容调查主要 xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.app.PersonalityTestFlow.SurveyMainFragment"
tools:showIn="@layout/survey_main_fragment">
<fragment
android:id="@+id/fragment_survey_place"
android:name="com.example.app.emptyFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/test"
tools:layout="@layout/empty_fragment" />
<RelativeLayout
android:id="@+id/RelativeSurveysFragmentErrorLayout"
android:layout_width="match_parent"
android:layout_height="300dp"
android:layout_alignParentBottom="true"
android:background="@color/TransparentBlack">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:src="@drawable/tarih" />
<com.example.CustomComponents.CustomTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:textColor="@color/White"
app:typeface="Bariol"
android:lineSpacingExtra="2dp"
android:text="bla bla"
android:textSize="24sp" />
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
surveyListFragment 代码
public class SurveyListFragment extends BaseFragment implements View.OnTouchListener {
private Logger Log;
private View view;
@Bind(R.id.recyclerViewSurveyList)
RecyclerView surveyListRecycler;
ComplexRecyclerViewSurveyListAdapter SurveyListAdapter;
private ArrayList<SurveyDataObj> surveyDataList;
private BusinessService BService;
private SurveyResponseObj surveyResponseObj;
private SurveyMainFlow surveyMainFlow;
// @Bind(R.id.RelativeSurveysFragmentRoot)
// RelativeLayout rootLayout;
private RelativeLayout errorLayout;
private float startY;
private float lastTranslate = 0.0f;
private float moveFactorY = 0.0f;
private android.widget.RelativeLayout.LayoutParams layoutParams;
private boolean animOk = false;
float dX, dY;
private int rootHeight;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// if (container == null) {
// return null;
// }
Log = Logger.getLogger(SurveyListFragment.class);
view = inflater.inflate(R.layout.surveys_fragment, container, false);
ButterKnife.bind(this, view);
BService = ((PolenioApplication) getActivity().getApplication()).getBusinessService();
surveyMainFlow = new SurveyMainFlow(getContext(), BService);
Bundle bundle = this.getArguments();
if (bundle != null) {
surveyResponseObj = bundle.getParcelable("surveyResponse");
if (surveyResponseObj == null) {
surveyResponseObj = null;
} else {
surveyMainFlow.setSurveyResponseObj(surveyResponseObj);
}
} else {
surveyResponseObj = null;
}
initLayout();
setLayoutInfo();
return view;
}
private int dp2px(int dp) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics());
}
private void showErrorDialog() {
rootHeight = ((SurveyMainFragment) getActivity()).getRootLayout().getHeight();
// surveyListRecycler.scrollToPosition(0);
surveyListRecycler.smoothScrollToPosition(0);
Log.i(surveyListRecycler.getChildAt(0).getHeight() + " " + surveyListRecycler.getChildAt(0).getWidth() + "root " + rootHeight + "errorLayout" + errorLayout.getHeight());
errorLayout.getLayoutParams().height = rootHeight - (dp2px(10) + surveyListRecycler.getChildAt(0).getHeight());
errorLayout.setVisibility(View.VISIBLE);
TranslateAnimation anim = new TranslateAnimation(0.0f, 0.0f, rootHeight, 0.0f);
anim.setDuration(300);
anim.setFillAfter(true);
errorLayout.startAnimation(anim);
Log.i("errorLayout" + errorLayout.getHeight());
}
private void initLayout() {
errorLayout = ((SurveyMainFragment) getActivity()).getErrorLayout();
errorLayout.setVisibility(View.GONE);
errorLayout.setOnTouchListener(this);
if (surveyResponseObj != null) {
surveyDataList = new ArrayList<>(surveyResponseObj.getData());
} else {
surveyDataList = new ArrayList<>();
}
SurveyListAdapter = new ComplexRecyclerViewSurveyListAdapter(getContext(), surveyDataList, new RecyclerViewListener() {
@Override
public void ItemClicked(Object item) {
Log.i(((SurveyDataObj) item).getTitle());
showErrorDialog();
}
});
surveyListRecycler.setAdapter(SurveyListAdapter);
surveyListRecycler.setLayoutManager(new SnappingLinearLayoutManager(getContext()));
surveyListRecycler.setItemAnimator(new DefaultItemAnimator());
surveyListRecycler.setHasFixedSize(true);
}
@Override
public void onDestroyView() {
super.onDestroyView();
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onPause() {
super.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// outState.putString("dataGotFromServer", dataGotFromServer);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// dataGotFromServer = savedInstanceState.getString("dataGotFromServer");
}
@Override
public void onSelectionUpdate(float val, float maxval) {
Log.i("Main" + "Selection update: " + val + ", max: " + maxval);
}
@Override
public void onValueSelected(float val, float maxval) {
Log.i("Main" + "Selection complete: " + val + ", max: " + maxval);
}
public ArrayList<SurveyDataObj> getSurveyDataList() {
return surveyDataList;
}
public void setSurveyDataList(ArrayList<SurveyDataObj> surveyDataList) {
this.surveyDataList = surveyDataList;
}
@Override
public boolean onTouch(final View view, MotionEvent event) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
dY = view.getY() - event.getRawY();
moveFactorY = event.getRawY();
lastTranslate = view.getY();
animOk = false;
break;
case MotionEvent.ACTION_MOVE:
if (animOk && moveFactorY - event.getRawY() < 0) {
TranslateAnimation anim = new TranslateAnimation(0.0f, 0.0f, lastTranslate, dY + event.getRawY() - view.getY());
anim.setDuration(0);
anim.setFillAfter(true);
view.startAnimation(anim);
}
animOk = true;
lastTranslate = dY + event.getRawY() - view.getY();
break;
case MotionEvent.ACTION_UP:
if (event.getRawY() - moveFactorY > (rootHeight - view.getY()) / 3) {
Log.i("Action visibility");
TranslateAnimation anim = new TranslateAnimation(0.0f, 0.0f, lastTranslate, rootHeight);
anim.setDuration(300);
anim.setFillAfter(true);
view.startAnimation(anim);
anim.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
view.setAnimation(null);
view.setVisibility(View.GONE);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
} else {
Log.i("Action animation null");
// view.getAnimation().cancel();
view.setAnimation(null);
// view.setVisibility(View.GONE);
}
// view.setAnimation(null);
Log.i("Action up");
break;
case MotionEvent.ACTION_CANCEL:
Log.i("Action cancel");
break;
case MotionEvent.ACTION_OUTSIDE:
Log.i("Action outside");
break;
default:
return false;
}
return true;
}
}
这是我的崩溃日志
03-07 21:07:41.550 11477-11477/com.example.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.app, PID: 11477
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.app/com.example.app.PersonalityTestFlow.SurveyMainFragment}: android.view.InflateException: Binary XML file line #12: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2316)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2376)
at android.app.ActivityThread.access$800(ActivityThread.java:147)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1281)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5253)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:900)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:695)
Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129)
at com.example.app.PersonalityTestFlow.SurveyMainFragment.onCreate(SurveyMainFragment.java:64)
at android.app.Activity.performCreate(Activity.java:5975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2376)
at android.app.ActivityThread.access$800(ActivityThread.java:147)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1281)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5253)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:900)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:695)
Caused by: java.lang.IllegalStateException: Fragment com.example.app.PersonalityTestFlow.SurveyListFragment did not create a view.
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2319)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:357)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:80)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129)
at com.example.app.PersonalityTestFlow.SurveyMainFragment.onCreate(SurveyMainFragment.java:64)
at android.app.Activity.performCreate(Activity.java:5975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2376)
at android.app.ActivityThread.access$800(ActivityThread.java:147)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1281)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5253)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:900)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:695)
最佳答案
我通过更改 fragment 解决了问题
<fragment
android:id="@+id/fragment_survey_place"
android:name="com.example.app.emptyFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/test" />
与
<FrameLayout
android:id="@+id/fragment_survey_place"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/test"/>
到目前为止没有崩溃
关于Android AppcompatActivity 与 fragment 从后台调用后崩溃(需要等待几分钟)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35852398/