1 /* 2 * Copyright (C) 2017 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 androidx.lifecycle; 18 19 import android.annotation.SuppressLint; 20 import android.app.Application; 21 22 import androidx.annotation.NonNull; 23 24 /** 25 * Application context aware {@link ViewModel}. 26 * <p> 27 * Subclasses must have a constructor which accepts {@link Application} as the only parameter. 28 * <p> 29 */ 30 public class AndroidViewModel extends ViewModel { 31 @SuppressLint("StaticFieldLeak") 32 private Application mApplication; 33 AndroidViewModel(@onNull Application application)34 public AndroidViewModel(@NonNull Application application) { 35 mApplication = application; 36 } 37 38 /** 39 * Return the application. 40 */ 41 @SuppressWarnings("TypeParameterUnusedInFormals") 42 @NonNull getApplication()43 public <T extends Application> T getApplication() { 44 //noinspection unchecked 45 return (T) mApplication; 46 } 47 } 48