Dexposed非侵入式运行期 AOP 框架
Dexposed 是阿里巴巴无线事业部第一个重量级 Andorid 开源软件，基于 ROOT 社区著名开源项目 Xposed 改造剥离了 ROOT 部分，演化为服务于所在应用自身的 AOP 框架。它支撑了阿里大部分 App 的在线分钟级客户端 bugfix 和线上调试能力。
Dexposed 的 AOP 是实现了纯非侵入式，没有任何注释处理器，weaver 或者字节码重写程序。Dexposed 的集成非常简单，就像加载一个 JNI 库一样，只需要在初始化的时候插入一行代码。
经典用例
典型的 AOP 编程
仪表化 (测试，性能监控等等)
在线热修复（重要，关键，安全漏洞等等）
SDK hooking，更好的开发体验
Gradle 依赖：
native_dependencies {
artifact 'com.taobao.dexposed:dexposed_l:0.2+:armeabi'
artifact 'com.taobao.dexposed:dexposed:0.2+:armeabi'
}
dependencies {
compile files('libs/dexposedbridge.jar')
}
初始化：
public class MyApplication extends Application {
@Override public void onCreate() {
// Check whether current device is supported (also initialize Dexposed framework if not yet)
if (DexposedBridge.canDexposed(this)) {
// Use Dexposed to kick off AOP stuffs.
...
}
}
...
}
基础使用示例代码1：
// Target class, method with parameter types, followed by the hook callback (XC_MethodHook).
DexposedBridge.findAndHookMethod(Activity.class, "onCreate", Bundle.class, new XC_MethodHook() {
// To be invoked before Activity.onCreate().
@Override protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
// "thisObject" keeps the reference to the instance of target class.
Activity instance = (Activity) param.thisObject;
// The array args include all the parameters.
Bundle bundle = (Bundle) param.args[0];
Intent intent = new Intent();
// XposedHelpers provide useful utility methods.
XposedHelpers.setObjectField(param.thisObject, "mIntent", intent);
// Calling setResult() will bypass the original method body use the result as method return value directly.
if (bundle.containsKey("return"))
param.setResult(null);
}
// To be invoked after Activity.onCreate()
@Override protected void afterHookedMethod(MethodHookParam param) throws Throwable {
XposedHelpers.callMethod(param.thisObject, "sampleMethod", 2);
}
});
基础使用示例代码2：
DexposedBridge.findAndHookMethod(Activity.class, "onCreate", Bundle.class, new XC_MethodReplacement() {
@Override protected Object replaceHookedMethod(MethodHookParam param) throws Throwable {
// Re-writing the method logic outside the original method context is a bit tricky but still viable.
...
}
});评论