/TalkBack/src/com/google/android/marvin/talkback/CompatUtils.java
Java | 113 lines | 80 code | 12 blank | 21 comment | 16 complexity | 070ba9bde3544ce9185b92429eb665d7 MD5 | raw file
1/* 2 * Copyright (C) 2011 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 17package com.google.android.marvin.talkback; 18 19import android.text.TextUtils; 20import android.util.Log; 21 22import java.lang.reflect.Constructor; 23import java.lang.reflect.Field; 24import java.lang.reflect.Method; 25 26public class CompatUtils { 27 private static final String TAG = CompatUtils.class.getSimpleName(); 28 29 public static Class<?> getClass(String className) { 30 try { 31 return Class.forName(className); 32 } catch (ClassNotFoundException e) { 33 return null; 34 } 35 } 36 37 public static Method getMethod(Class<?> targetClass, String name, 38 Class<?>... parameterTypes) { 39 if (targetClass == null || TextUtils.isEmpty(name)) return null; 40 try { 41 return targetClass.getMethod(name, parameterTypes); 42 } catch (SecurityException e) { 43 // ignore 44 } catch (NoSuchMethodException e) { 45 // ignore 46 } 47 return null; 48 } 49 50 public static Field getField(Class<?> targetClass, String name) { 51 if (targetClass == null || TextUtils.isEmpty(name)) return null; 52 try { 53 return targetClass.getField(name); 54 } catch (SecurityException e) { 55 // ignore 56 } catch (NoSuchFieldException e) { 57 // ignore 58 } 59 return null; 60 } 61 62 public static Constructor<?> getConstructor(Class<?> targetClass, Class<?>... parameterTypes) { 63 if (targetClass == null) return null; 64 try { 65 return targetClass.getConstructor(parameterTypes); 66 } catch (SecurityException e) { 67 // ignore 68 } catch (NoSuchMethodException e) { 69 // ignore 70 } 71 return null; 72 } 73 74 public static Object newInstance(Constructor<?> constructor, Object... args) { 75 if (constructor == null) return null; 76 try { 77 return constructor.newInstance(args); 78 } catch (Exception e) { 79 Log.e(TAG, "Exception in newInstance: " + e.getClass().getSimpleName()); 80 } 81 return null; 82 } 83 84 public static Object invoke( 85 Object receiver, Object defaultValue, Method method, Object... args) { 86 if (method == null) return defaultValue; 87 try { 88 return method.invoke(receiver, args); 89 } catch (Exception e) { 90 Log.e(TAG, "Exception in invoke: " + e.getClass().getSimpleName()); 91 } 92 return defaultValue; 93 } 94 95 public static Object getFieldValue(Object receiver, Object defaultValue, Field field) { 96 if (field == null) return defaultValue; 97 try { 98 return field.get(receiver); 99 } catch (Exception e) { 100 Log.e(TAG, "Exception in getFieldValue: " + e.getClass().getSimpleName()); 101 } 102 return defaultValue; 103 } 104 105 public static void setFieldValue(Object receiver, Field field, Object value) { 106 if (field == null) return; 107 try { 108 field.set(receiver, value); 109 } catch (Exception e) { 110 Log.e(TAG, "Exception in setFieldValue: " + e.getClass().getSimpleName()); 111 } 112 } 113}