popBackStack

Question

在我的应用程序中，我正在使用BottomBar菜单。当快速选择菜单时，我会收到关于崩解的崩溃报告（仅限某些设备）。这是 stacktrace

  

非致命异常：java.lang.IllegalStateException：无法执行   onSaveInstanceState之后的这个动作          在android.support.v4.app.FragmentManagerImpl.checkStateLoss（FragmentManager.java:1842）          在android.support.v4.app.FragmentManagerImpl.enqueueAction（FragmentManager.java:1860）          在android.support.v4.app.FragmentManagerImpl.popBackStack（FragmentManager.java:781）          at com.beco.ibeco.app.MainActivity $ 1.onMenuTabSelected（MainActivity.java:87）          在com.beco.ibeco.app.views.bottombar.BottomBar.notifyMenuListener（BottomBar.java:1239）          在com.beco.ibeco.app.views.bottombar.BottomBar.updateSelectedTab（BottomBar.java:1199）          在com.beco.ibeco.app.views.bottombar.BottomBar.handleClick（BottomBar.java:1161）          在com.beco.ibeco.app.views.bottombar.BottomBar.onClick（BottomBar.java:1149）          在android.view.View.performClick（View.java:5076）          在android.view.View $ PerformClick.run（View.java:20279）          在android.os.Handler.handleCallback（Handler.java:739）          在android.os.Handler.dispatchMessage（Handler.java:95）          在android.os.Looper.loop（Looper.java:135）          在android.app.ActivityThread.main（ActivityThread.java:5930）          在java.lang.reflect.Method.invoke（Method.java）          在java.lang.reflect.Method.invoke（Method.java:372）          在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:1405）          在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1200）
  这是代码

protected void onCreate(Bundle savedInstanceState) {
        mActive = true;
        super.onCreate(savedInstanceState);
        initBottomBar(savedInstanceState);
        Intent intent = getIntent();
    }  
private void initBottomBar(Bundle savedInstanceState) {
        mBottomBar = BottomBar.attach(this, savedInstanceState);
        mBottomBar.useFixedMode();
        mBottomBar.noTabletGoodness();
        mBottomBar.setItemsFromMenu(R.menu.bottombar_menu, new OnMenuTabClickListener() {
            @Override
            public void onMenuTabSelected(@IdRes int menuItemId) {

                FragmentManager fragmentManager = getSupportFragmentManager();
                fragmentManager.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);//line 87

                switch (menuItemId) {

                    case R.id.bottomBarHome:
                        showStoreList();
                        break;

                    case R.id.bottomBarMap:
                        showMap();
                        break;

                    case R.id.bottomBarDeal:
                        showDeals();
                        break;

                    case R.id.bottomBarSettings:
                        showSettings();
                        break;

                    case R.id.bottomBarNotification:
                        if (mNotificationBadge != null) {
                            mNotificationBadge.hide();
                            Beco.getApp().clearBadge();
                        }
                        showNotifications();
                        break;
                }
            }

            @Override
            public void onMenuTabReSelected(@IdRes int menuItemId) {
                switch (menuItemId) {
                    case R.id.bottomBarHome:
                        if (mCurrentTab != HOME)
                            showStoreList();
                        break;

                    case R.id.bottomBarMap:
                        if (mCurrentTab != MAP)
                            showMap();
                        break;

                    case R.id.bottomBarDeal:
                        if (mCurrentTab != DEAL)
                            showDeals();
                        break;

                    case R.id.bottomBarNotification:
                        if(mCurrentTab != NOTIFICATION) {
                            if (mNotificationBadge != null) {
                                mNotificationBadge.hide();
                                mNotificationBadge.setDealItemCount(0);
                                Beco.getApp().clearBadge();
                            }
                            showNotifications();
                        }
                        break;

                    case R.id.bottomBarSettings:
                        if (mCurrentTab != SETTINGS)
                            showSettings();
                        break;
                }
            }
        });

        mNotificationBadge = mBottomBar.makeBadgeForTabAt(3, R.color.beco_badge_color, Beco.getApp().getBadgeCount());
    }  
@Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mBottomBar.onSaveInstanceState(outState);
    }  

如何覆盖此问题？

Answer 1

创建一个布尔值并检查活动是否不会暂停

@Override
public void onResume() {
    super.onResume();
    mIsResumed = true;
}

@Override
public void onPause() {
    mIsResumed = false;
    super.onPause();
}

然后加载片段检查

if(mIsResumed){
    FragmentManager fragmentManager = getSupportFragmentManager(); 
    fragmentManager.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);//line 8
}