1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17 package com.android.tools.sdkcontroller.utils; 18 19 import android.annotation.TargetApi; 20 import android.os.Build; 21 import android.view.View; 22 23 /** 24 * Helper to deal with methods only available at certain API levels. 25 * Users should get use {@link ApiHelper#get()} to retrieve a singleton 26 * and then call the methods they desire. If the method is not available 27 * on the current API level, a stub or a nop will be used instead. 28 */ 29 @TargetApi(7) 30 public class ApiHelper { 31 32 private static ApiHelper sApiHelper = null; 33 34 /** Creates a new ApiHelper adapted to the current runtime API level. */ 35 public static ApiHelper get() { 36 if (sApiHelper == null) { 37 if (Build.VERSION.SDK_INT >= 11) { 38 sApiHelper = new ApiHelper_11(); 39 } else { 40 sApiHelper = new ApiHelper(); 41 } 42 } 43 44 return sApiHelper; 45 } 46 47 protected ApiHelper() { 48 } 49 50 /** 51 * Applies {@link View#setSystemUiVisibility(int)}, available only starting with API 11. 52 * Does nothing for API < 11. 53 */ 54 public void View_setSystemUiVisibility(View view, int visibility) { 55 // nop 56 } 57 } 58
