Merge "Throw ISE when adding a non-public non-static fragment class instance to a transaction"

package android.app;

import android.graphics.Rect;

import android.os.Build;

import android.os.Parcel;

import android.os.Parcelable;

import android.text.TextUtils;

import java.io.FileDescriptor;

import java.io.PrintWriter;

import java.lang.reflect.Modifier;

import java.util.ArrayList;

import java.util.List;

    }

    private void doAddOp(int containerViewId, Fragment fragment, String tag, int opcmd) {

        if (mManager.mHost.getContext() != null) {

            final int targetSdkVersion =

                    mManager.mHost.getContext().getApplicationInfo().targetSdkVersion;

            final Class fragmentClass = fragment.getClass();

            final int modifiers = fragmentClass.getModifiers();

            // TODO: make the check N_MR1 or O

            if (targetSdkVersion > Build.VERSION_CODES.N && (fragmentClass.isAnonymousClass()

                    || !Modifier.isPublic(modifiers)

                    || (fragmentClass.isMemberClass() && !Modifier.isStatic(modifiers)))) {

                throw new IllegalStateException("Fragment must be a public static class to be "

                        + "properly recreated on configuration change.");

            }

        }

        fragment.mFragmentManager = mManager;

        if (tag != null) {