cn.wandersnail.commons.util

类 NativeLibInstaller

java.lang.Object

cn.wandersnail.commons.util.NativeLibInstaller

public class NativeLibInstaller
extends java.lang.Object

so库动态加载工具类

date: 2019/8/7 21:11 author: zengfansheng

构造器概要

构造器

构造器和说明
NativeLibInstaller()

方法概要

限定符和类型	方法和说明
static void	expandFieldArray(java.lang.Object instance, java.lang.String fieldName, java.lang.Object[] extraElements) Replace the value of a field containing a non null array, by a new array containing the elements of the original array plus the elements of extraElements.
static java.lang.reflect.Constructor<?>	findConstructor(java.lang.Object instance, java.lang.Class<?>... parameterTypes) Locates a given constructor anywhere in the class inheritance hierarchy.
static java.lang.reflect.Field	findField(java.lang.Class<?> originClazz, java.lang.String name)
static java.lang.reflect.Method	findMethod(java.lang.Class<?> clazz, java.lang.String name, java.lang.Class<?>... parameterTypes) Locates a given method anywhere in the class inheritance hierarchy.
static java.lang.reflect.Method	findMethod(java.lang.Object instance, java.lang.String name, java.lang.Class<?>... parameterTypes) Locates a given method anywhere in the class inheritance hierarchy.
static java.lang.Object	getActivityThread(android.content.Context context, java.lang.Class<?> activityThread)
static int	getValueOfStaticIntField(java.lang.Class<?> clazz, java.lang.String fieldName, int defVal) Handy method for fetching hidden integer constant value in system classes.
static void	installLibrary(java.lang.ClassLoader classLoader, java.io.File folder) 将包含so文件的目录添加到系统可加载列表中
static void	reduceFieldArray(java.lang.Object instance, java.lang.String fieldName, int reduceSize) Replace the value of a field containing a non null array, by a new array containing the elements of the original array plus the elements of extraElements.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

NativeLibInstaller

public NativeLibInstaller()

方法详细资料

installLibrary

public static void installLibrary(java.lang.ClassLoader classLoader,
                                  java.io.File folder)
                           throws java.lang.Throwable

将包含so文件的目录添加到系统可加载列表中

参数:

classLoader - 调用此方法的类加载器

folder - so文件所在的目录

抛出:

java.lang.Throwable

findField

public static java.lang.reflect.Field findField(java.lang.Class<?> originClazz,
                                                java.lang.String name)
                                         throws java.lang.NoSuchFieldException

抛出:

java.lang.NoSuchFieldException

findMethod

public static java.lang.reflect.Method findMethod(java.lang.Object instance,
                                                  java.lang.String name,
                                                  java.lang.Class<?>... parameterTypes)
                                           throws java.lang.NoSuchMethodException

Locates a given method anywhere in the class inheritance hierarchy.

参数:

instance - an object to search the method into.

name - method name

parameterTypes - method parameter types

返回:

a method object

抛出:

java.lang.NoSuchMethodException - if the method cannot be located

findMethod

public static java.lang.reflect.Method findMethod(java.lang.Class<?> clazz,
                                                  java.lang.String name,
                                                  java.lang.Class<?>... parameterTypes)
                                           throws java.lang.NoSuchMethodException

Locates a given method anywhere in the class inheritance hierarchy.

参数:

clazz - a class to search the method into.

name - method name

parameterTypes - method parameter types

返回:

a method object

抛出:

java.lang.NoSuchMethodException - if the method cannot be located

findConstructor

public static java.lang.reflect.Constructor<?> findConstructor(java.lang.Object instance,
                                                               java.lang.Class<?>... parameterTypes)
                                                        throws java.lang.NoSuchMethodException

Locates a given constructor anywhere in the class inheritance hierarchy.

参数:

instance - an object to search the constructor into.

parameterTypes - constructor parameter types

返回:

a constructor object

抛出:

java.lang.NoSuchMethodException - if the constructor cannot be located

expandFieldArray

public static void expandFieldArray(java.lang.Object instance,
                                    java.lang.String fieldName,
                                    java.lang.Object[] extraElements)
                             throws java.lang.NoSuchFieldException,
                                    java.lang.IllegalArgumentException,
                                    java.lang.IllegalAccessException

Replace the value of a field containing a non null array, by a new array containing the elements of the original array plus the elements of extraElements.

参数:

instance - the instance whose field is to be modified.

fieldName - the field to modify.

extraElements - elements to append at the end of the array.

抛出:

java.lang.NoSuchFieldException

java.lang.IllegalArgumentException

java.lang.IllegalAccessException

reduceFieldArray

public static void reduceFieldArray(java.lang.Object instance,
                                    java.lang.String fieldName,
                                    int reduceSize)
                             throws java.lang.NoSuchFieldException,
                                    java.lang.IllegalArgumentException,
                                    java.lang.IllegalAccessException

Replace the value of a field containing a non null array, by a new array containing the elements of the original array plus the elements of extraElements.

参数:

instance - the instance whose field is to be modified.

fieldName - the field to modify.

抛出:

java.lang.NoSuchFieldException

java.lang.IllegalArgumentException

java.lang.IllegalAccessException

getActivityThread

public static java.lang.Object getActivityThread(android.content.Context context,
                                                 java.lang.Class<?> activityThread)

getValueOfStaticIntField

public static int getValueOfStaticIntField(java.lang.Class<?> clazz,
                                           java.lang.String fieldName,
                                           int defVal)

Handy method for fetching hidden integer constant value in system classes.