我试图获得载波,wifi,3g和4g的dBm信号强度。
我目前正在使用此代码从状态栏获取运营商和wifi,我想知道是否有其他方式或更好的方法?另外我怎么能得到3g和4g?
UIApplication *app = [UIApplication sharedApplication];
NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
NSString *dataNetworkItemView = nil;
NSString *wifiNetworkItemView = nil;
for (id subview in subviews) {
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarSignalStrengthItemView") class]]) {
dataNetworkItemView = subview;
}
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
wifiNetworkItemView = subview;
}
}
int carrierSignalStrength = [[dataNetworkItemView valueForKey:@"signalStrengthRaw"] intValue];
int wifiSignalStrength = [[wifiNetworkItemView valueForKey:@"wifiStrengthRaw"] intValue];
如果我使用的任何方法都是私密的,则无关紧要。
答案 0 :(得分:2)
使用CoreTelephony和CTTelephonyCenter
观察员:
#include <CoreTelephony/CoreTelephony.h>
// Event handler
static void SignalStrengthDidChange(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo)
{
long int raw = 0;
long int graded = 0;
long int bars = 0;
CTIndicatorsGetSignalStrength(&raw, &graded, &bars);
printf("Signal strength changed! Raw: %li, graded: %li bars: %li\n", raw, graded, bars);
// Prints something like:
// Signal strength changed! Raw: -96, graded: 27 bars: 3
}
在另一个函数中注册处理程序:
// Register as a listener to the kCTIndicatorsSignalStrengthNotification notification to be notified when the signal strength changed.
CTTelephonyCenterAddObserver(CTTelephonyCenterGetDefault(), NULL, SignalStrengthDidChange, kCTIndicatorsSignalStrengthNotification, NULL, CFNotificationSuspensionBehaviorCoalesce);
// Get the initial strength.
SignalStrengthDidChange();
CFRunLoopRun();
改编自iPhone Dev Wiki article on CTIndicators。
我认为这些方法不再适用于任何大于8.4的iOS SDK(?)。要访问它们,请使用extern函数和常量创建一个新标题:
#include <CoreFoundation/CoreFoundation.h>
#if __cplusplus
extern "C" {
#endif
#pragma mark - API
/* This API is a mimic of CFNotificationCenter. */
CFNotificationCenterRef CTTelephonyCenterGetDefault();
void CTTelephonyCenterAddObserver(CFNotificationCenterRef center, const void *observer, CFNotificationCallback callBack, CFStringRef name, const void *object, CFNotificationSuspensionBehavior suspensionBehavior);
void CTTelephonyCenterRemoveObserver(CFNotificationCenterRef center, const void *observer, CFStringRef name, const void *object);
void CTTelephonyCenterRemoveEveryObserver(CFNotificationCenterRef center, const void *observer);
void CTIndicatorsGetSignalStrength(long int *raw, long int *graded, long int *bars);
#pragma mark - Definitions
/* For use with the CoreTelephony notification system. */
extern CFStringRef kCTIndicatorsSignalStrengthNotification;
#if __cplusplus
}
#endif
答案 1 :(得分:0)
我也使用私有API ..但我从(可见)状态栏中获得此信号强度。
UIApplication *app = [UIApplication sharedApplication];
NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
NSString *dataNetworkItemView = nil;
NSString *signalStrengthView = nil;
for (id subview in subviews) {
NSLog(@"Class - %@", NSStringFromClass([subview class]));
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarSignalStrengthItemView") class]]) {
signalStrengthView = subview;
}
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
dataNetworkItemView = subview;
}
}
int signalStrength = [[signalStrengthView valueForKey:@"signalStrengthRaw"] intValue];
NSLog(@"signal %d", signalStrength);
int wifiStrength = [[dataNetworkItemView valueForKey:@"wifiStrengthRaw"] intValue];
NSLog(@"wifi %d", wifiStrength);
希望这会有所帮助!!