私有iOS框架返回NULL

我正试图在iOS 9.1的帮助下使用

BatteryCenter

和

CommonUtilities

私有框架。这是出于研究目的，不会进入应用商店

以下是它们各自的代码：

- (void)batteryCenter {
NSBundle *bundle = [NSBundle bundleWithPath:@"/System/Library/PrivateFrameworks/BatteryCenter.framework"];
BOOL success = [bundle load];

    if(success) {
        Class BCBatteryDevice = NSClassFromString(@"BCBatteryDevice");
        id si = [[BCBatteryDevice alloc] init];

        NSLog(@"Charging: %@", [si valueForKey:@"charging"]);
    }
}


- (void)commonUtilities {
    NSBundle *bundle = [NSBundle bundleWithPath:@"/System/Library/PrivateFrameworks/CommonUtilities.framework"];
    BOOL success = [bundle load];

    if(success) {
        Class CommonUtilities = NSClassFromString(@"CUTWiFiManager");
        id si = [CommonUtilities valueForKey:@"sharedInstance"];

        NSLog(@"Is Wi-Fi Enabled: %@", [si valueForKey:@"isWiFiEnabled"]);
        NSLog(@"Wi-Fi Scaled RSSI: %@", [si valueForKey:@"wiFiScaledRSSI"]);
        NSLog(@"Wi-Fi Scaled RSSI: %@", [si valueForKey:@"lastWiFiPowerInfo"]);
    }
}

虽然我得到了这些类，但它们所有的值都是空的，这很奇怪，因为有些值必须是真的，例如，我连接到了Wi-Fi，所以

isWiFiEnabled

应该是

YES

---

我的代码没有返回预期的结果，到底缺少了什么？它需要权利吗？如果是，具体是什么？

在执行成功块后，您需要首先访问

BCBatteryDeviceController

，通过它可以获得所有连接设备的列表

下面是相同的代码

Class CommonUtilities = NSClassFromString(@"BCBatteryDeviceController");

id si = [CommonUtilities valueForKey:@"sharedInstance"];

BCBatteryDeviceController* objBCBatteryDeviceController = si;

NSLog(@"Connected devices: %@", objBCBatteryDeviceController.connectedDevices);

---

在Swift中，我在没有

BatteryCenter

标题的情况下成功地实现了这一点。我仍在寻找一种不使用

bcbatterydeviconroller

访问已连接电池列表的方法，但这就是我目前所做的工作：

Swift 3：

guard case let batteryCenterHandle = dlopen("/System/Library/PrivateFrameworks/BatteryCenter.framework/BatteryCenter", RTLD_LAZY), batteryCenterHandle != nil else {
    fatalError("BatteryCenter not found")
}

guard let batteryDeviceControllerClass = NSClassFromString("BCBatteryDeviceController") as? NSObjectProtocol else {
    fatalError("BCBatteryDeviceController not found")
}

let instance = batteryDeviceControllerClass.perform(Selector(("sharedInstance"))).takeUnretainedValue()

if let devices = instance.value(forKey: "connectedDevices") as? [AnyObject] {

    // You will have more than one battery in connectedDevices if your device is using a Smart Case
    for battery in devices {
        print(battery)
    }
}

Swift 2.2：

guard case let batteryCenterHandle = dlopen("/System/Library/PrivateFrameworks/BatteryCenter.framework/BatteryCenter", RTLD_LAZY) where batteryCenterHandle != nil else {
    fatalError("BatteryCenter not found")
}

guard let c = NSClassFromString("BCBatteryDeviceController") as? NSObjectProtocol else {
    fatalError("BCBatteryDeviceController not found")
}

let instance = c.performSelector("sharedInstance").takeUnretainedValue()
if let devices = instance.valueForKey("connectedDevices") as? [AnyObject] {

    // You will have more than one battery in connectedDevices if your device is using a Smart Case
    for battery in devices {
        print(battery)
    }
}

此日志记录：

<BCBatteryDevice: 0x15764a3d0; vendor = Apple; productIdentifier = 0; parts = (null); matchIdentifier = (null); baseIdentifier = InternalBattery-0; name = iPhone; percentCharge = 63; lowBattery = NO; connected = YES; charging = YES; internal = YES; powerSource = YES; poweredSoureState = AC Power; transportType = 1 >