Android-NativeActivity事件分发

通过NativeActivity获取InputQueue对象

private fun getField(cls: Class<*>, str: String): Field? { // 传入Activity Class
        var mCls: Class<*>? = cls
        try {
            return mCls?.getField(str)
        } catch (e: NoSuchFieldException) {
            while (true) {
                try {
                    val field = mCls?.getDeclaredField(str)?.apply {
                        isAccessible = true
                    }
                    return field
                } catch (unused: NoSuchFieldException) {
                    e.printStackTrace()
                    mCls = mCls?.superclass
                    if (mCls == null) {
                        return null
                    }
                }
            }
        }
    }

val field = getField(activity.javaClass, "mCurInputQueue")

反射执行InputQueue的sendInputEvent方法

inputQueue.javaClass.methods.forEach { method ->
	if(method.name == "sendInputEvent") {
		method.isAccessible = true
		method.invoke(inputQueue, event, 0, false, inputEventCallback)
	}
}
// 构建inputEventCallback
private fun getInputEventCallback(obj: Any): Any? {
	try {
		return Proxy.newProxyInstance(
			obj.javaClass.classLoader,
			arrayOf<Class<*>>(Class.forName("android.view.InputQueue\$FinishedInputEventCallback"))
		) { _, _, _ -> null }
	} catch (e: Exception) {
		Log.d("dqs", ">>>>>>>>>>>>>>> ${Log.getStackTraceString(e)}")
		return null
	}
}

// 不同情况完整示例
GmLifecycleUtils.getTopActivity()?.let { activity ->
	if (activity is NativeActivity) {
		val field = getField(activity.javaClass, "mCurInputQueue")
		val inputEventCallback = getInputEventCallback(activity)
		if (field != null) {
			val inputQueue = field.get(activity)
			inputQueue.javaClass.methods.forEach { method ->
				if(method.name == "sendInputEvent") {
					method.isAccessible = true
					method.invoke(inputQueue, event, 0, false, inputEventCallback)
				}
			}
		} else {
		}
	} else {
		activity.window?.decorView?.apply {
			dispatchTouchEvent(event)
		}
	}
}

本文链接:https://iichen.cn/?p=858
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Source: github.com/k4yt3x/flowerhd
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