我正在尝试使用反射来访问一些未发布的电信API功能。目前,我遇到了一个问题,即无法实例化
当前当我发起呼叫时...
serviceManager
对象,该对象需要作为绑定器获取“phone”服务,然后我可以使用它来实例化电信对象,从而进行呼叫、结束呼叫等操作...当前当我发起呼叫时...
serviceManagerObject = tempInterfaceMethod.invoke(null, new Object[] { new Binder() });
它返回了一个NullPointerException。我认为这与创建一个新的Binder有关,而不是发送适当的Binder(我不确定哪一个是适当的)。
public void placeReflectedCall() throws ClassNotFoundException,
SecurityException, NoSuchMethodException, IllegalArgumentException,
IllegalAccessException, InvocationTargetException,
InstantiationException {
String serviceManagerName = "android.os.IServiceManager";
String serviceManagerNativeName = "android.os.ServiceManagerNative";
String telephonyName = "com.android.internal.telephony.ITelephony";
Class telephonyClass;
Class telephonyStubClass;
Class serviceManagerClass;
Class serviceManagerStubClass;
Class serviceManagerNativeClass;
Class serviceManagerNativeStubClass;
Method telephonyCall;
Method telephonyEndCall;
Method telephonyAnswerCall;
Method getDefault;
Method[] temps;
Constructor[] serviceManagerConstructor;
// Method getService;
Object telephonyObject;
Object serviceManagerObject;
String number = "1111111111";
telephonyClass = Class.forName(telephonyName);
telephonyStubClass = telephonyClass.getClasses()[0];
serviceManagerClass = Class.forName(serviceManagerName);
serviceManagerNativeClass = Class.forName(serviceManagerNativeName);
Method getService = // getDefaults[29];
serviceManagerClass.getMethod("getService", String.class);
Method tempInterfaceMethod = serviceManagerNativeClass.getMethod(
"asInterface", IBinder.class);
// this does not work
serviceManagerObject = tempInterfaceMethod.invoke(null,
new Object[] { new Binder() });
IBinder retbinder = (IBinder) getService.invoke(serviceManagerObject,
"phone");
Method serviceMethod = telephonyStubClass.getMethod("asInterface",
IBinder.class);
telephonyObject = serviceMethod
.invoke(null, new Object[] { retbinder });
telephonyCall = telephonyClass.getMethod("call", String.class);
telephonyEndCall = telephonyClass.getMethod("endCall");
telephonyAnswerCall = telephonyClass.getMethod("answerRingingCall");
telephonyCall.invoke(telephonyObject, number);
}