1 /* 2 * Copyright (C) 2015 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.core.app; 18 19 import android.os.Build; 20 import android.os.Bundle; 21 import android.os.IBinder; 22 import android.util.Log; 23 24 import androidx.annotation.NonNull; 25 import androidx.annotation.Nullable; 26 27 import java.lang.reflect.InvocationTargetException; 28 import java.lang.reflect.Method; 29 30 /** 31 * Helper for accessing features in {@link Bundle}. 32 */ 33 public final class BundleCompat { 34 35 static class BundleCompatBaseImpl { 36 private static final String TAG = "BundleCompatBaseImpl"; 37 38 private static Method sGetIBinderMethod; 39 private static boolean sGetIBinderMethodFetched; 40 41 private static Method sPutIBinderMethod; 42 private static boolean sPutIBinderMethodFetched; 43 44 private BundleCompatBaseImpl() { 45 } 46 47 public static IBinder getBinder(Bundle bundle, String key) { 48 if (!sGetIBinderMethodFetched) { 49 try { 50 sGetIBinderMethod = Bundle.class.getMethod("getIBinder", String.class); 51 sGetIBinderMethod.setAccessible(true); 52 } catch (NoSuchMethodException e) { 53 Log.i(TAG, "Failed to retrieve getIBinder method", e); 54 } 55 sGetIBinderMethodFetched = true; 56 } 57 58 if (sGetIBinderMethod != null) { 59 try { 60 return (IBinder) sGetIBinderMethod.invoke(bundle, key); 61 } catch (InvocationTargetException | IllegalAccessException 62 | IllegalArgumentException e) { 63 Log.i(TAG, "Failed to invoke getIBinder via reflection", e); 64 sGetIBinderMethod = null; 65 } 66 } 67 return null; 68 } 69 70 public static void putBinder(Bundle bundle, String key, IBinder binder) { 71 if (!sPutIBinderMethodFetched) { 72 try { 73 sPutIBinderMethod = 74 Bundle.class.getMethod("putIBinder", String.class, IBinder.class); 75 sPutIBinderMethod.setAccessible(true); 76 } catch (NoSuchMethodException e) { 77 Log.i(TAG, "Failed to retrieve putIBinder method", e); 78 } 79 sPutIBinderMethodFetched = true; 80 } 81 82 if (sPutIBinderMethod != null) { 83 try { 84 sPutIBinderMethod.invoke(bundle, key, binder); 85 } catch (InvocationTargetException | IllegalAccessException 86 | IllegalArgumentException e) { 87 Log.i(TAG, "Failed to invoke putIBinder via reflection", e); 88 sPutIBinderMethod = null; 89 } 90 } 91 } 92 } 93 94 private BundleCompat() {} 95 96 /** 97 * A convenience method to handle getting an {@link IBinder} inside a {@link Bundle} for all 98 * Android versions. 99 * @param bundle The bundle to get the {@link IBinder}. 100 * @param key The key to use while getting the {@link IBinder}. 101 * @return The {@link IBinder} that was obtained. 102 */ 103 @Nullable 104 public static IBinder getBinder(@NonNull Bundle bundle, @Nullable String key) { 105 if (Build.VERSION.SDK_INT >= 18) { 106 return bundle.getBinder(key); 107 } else { 108 return BundleCompatBaseImpl.getBinder(bundle, key); 109 } 110 } 111 112 /** 113 * A convenience method to handle putting an {@link IBinder} inside a {@link Bundle} for all 114 * Android versions. 115 * @param bundle The bundle to insert the {@link IBinder}. 116 * @param key The key to use while putting the {@link IBinder}. 117 * @param binder The {@link IBinder} to put. 118 */ 119 public static void putBinder(@NonNull Bundle bundle, @Nullable String key, 120 @Nullable IBinder binder) { 121 if (Build.VERSION.SDK_INT >= 18) { 122 bundle.putBinder(key, binder); 123 } else { 124 BundleCompatBaseImpl.putBinder(bundle, key, binder); 125 } 126 } 127 } 128