1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.service.autofill; 18 19 import android.annotation.Nullable; 20 import android.view.autofill.AutofillId; 21 22 import com.android.internal.util.Preconditions; 23 24 /** @hide */ 25 final class AutofillServiceHelper { 26 27 static AutofillId[] assertValid(@Nullable AutofillId[] ids) { 28 Preconditions.checkArgument(ids != null && ids.length > 0, "must have at least one id"); 29 // Can't use Preconditions.checkArrayElementsNotNull() because it throws NPE instead of IAE 30 for (int i = 0; i < ids.length; ++i) { 31 if (ids[i] == null) { 32 throw new IllegalArgumentException("ids[" + i + "] must not be null"); 33 } 34 } 35 return ids; 36 } 37 38 private AutofillServiceHelper() { 39 throw new UnsupportedOperationException("contains static members only"); 40 } 41 } 42
