| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.inputmethod.compat; |
| |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| |
| public final class CompatUtils { |
| private static final String TAG = CompatUtils.class.getSimpleName(); |
| |
| private CompatUtils() { |
| // This utility class is not publicly instantiable. |
| } |
| |
| public static Class<?> getClass(final String className) { |
| try { |
| return Class.forName(className); |
| } catch (ClassNotFoundException e) { |
| return null; |
| } |
| } |
| |
| public static Method getMethod(final Class<?> targetClass, final String name, |
| final Class<?>... parameterTypes) { |
| if (targetClass == null || TextUtils.isEmpty(name)) return null; |
| try { |
| return targetClass.getMethod(name, parameterTypes); |
| } catch (SecurityException e) { |
| // ignore |
| } catch (NoSuchMethodException e) { |
| // ignore |
| } |
| return null; |
| } |
| |
| public static Field getField(final Class<?> targetClass, final String name) { |
| if (targetClass == null || TextUtils.isEmpty(name)) return null; |
| try { |
| return targetClass.getField(name); |
| } catch (SecurityException e) { |
| // ignore |
| } catch (NoSuchFieldException e) { |
| // ignore |
| } |
| return null; |
| } |
| |
| public static Constructor<?> getConstructor(final Class<?> targetClass, |
| final Class<?> ... types) { |
| if (targetClass == null || types == null) return null; |
| try { |
| return targetClass.getConstructor(types); |
| } catch (SecurityException e) { |
| // ignore |
| } catch (NoSuchMethodException e) { |
| // ignore |
| } |
| return null; |
| } |
| |
| public static Object newInstance(final Constructor<?> constructor, final Object ... args) { |
| if (constructor == null) return null; |
| try { |
| return constructor.newInstance(args); |
| } catch (Exception e) { |
| Log.e(TAG, "Exception in newInstance", e); |
| } |
| return null; |
| } |
| |
| public static Object invoke(final Object receiver, final Object defaultValue, |
| final Method method, final Object... args) { |
| if (method == null) return defaultValue; |
| try { |
| return method.invoke(receiver, args); |
| } catch (Exception e) { |
| Log.e(TAG, "Exception in invoke", e); |
| } |
| return defaultValue; |
| } |
| |
| public static Object getFieldValue(final Object receiver, final Object defaultValue, |
| final Field field) { |
| if (field == null) return defaultValue; |
| try { |
| return field.get(receiver); |
| } catch (Exception e) { |
| Log.e(TAG, "Exception in getFieldValue", e); |
| } |
| return defaultValue; |
| } |
| |
| public static void setFieldValue(final Object receiver, final Field field, final Object value) { |
| if (field == null) return; |
| try { |
| field.set(receiver, value); |
| } catch (Exception e) { |
| Log.e(TAG, "Exception in setFieldValue", e); |
| } |
| } |
| } |