[得到同一包名下的所有Class] #DexFile

getClassesInPackaget.kt

private fun getClassesNameListInPackage(packageName: String, context: Context): List<String> {
    val realPackageName = "${context.packageName}.$packageName"
    val df = DexFile(context.packageCodePath)
    val enumration = df.entries()
    val list = mutableListOf<String>()
    while (enumration.hasMoreElements()) {
        val className = enumration.nextElement()
        if (className.contains(realPackageName)) {
            list.add(className)
        }
    }
    return list
}

fun getClassesInPackage(packageName: String, context: Context)
        = getClassesNameListInPackage(packageName, context).mapNotNull { Class.forName(it) }