iOS页面响应、电量、流量分析 - ZhiJianShuSheng/Read-And-Learn GitHub Wiki
页面响应
页面响应采用检测iOS的APP性能的一些方法里的子线程监控主线程方式就能够检测到。
电量
三种方式可以获取电量,分别是通过Instruments的Energy Diagnostics,UIDevice和IOKit framework
Instruments的Energy Diagnostics
可以获取到iphone特定时段的电量消耗信息。具体步骤: 打开Developer选项中的Start Logging —> 断开iphone与PC连接 —> 一系列的用户操作 —> Stop Logging —> 连接iphone与PC, 将电量消耗数据导入Instruments。
UIDevice
UIDevice提供了设备的详细信息,如systemVersion, batteryLevel等。
UIDevice.currentDevice.batteryMonitoringEnabled = true
let batteryLevel = UIDevice.currentDevice().batteryLevel
UIDevice.currentDevice.batteryMonitoringEnabled = false
IOKit framework
IOKit framework在IOS中用来跟硬件或内核服务通信,常用于获取硬件详细信息。 首先,需要将IOPowerSources.h,IOPSKeys.h,IOKit三个文件导入到工程中。把batteryMonitoringEnabled置为true,然后即可通过如下代码获取1%精确度的电量信息:
-(double) getBatteryLevel{
// returns a blob of power source information in an opaque CFTypeRef
CFTypeRef blob = IOPSCopyPowerSourcesInfo();
// returns a CFArray of power source handles, each of type CFTypeRef
CFArrayRef sources = IOPSCopyPowerSourcesList(blob);
CFDictionaryRef pSource = NULL;
const void *psValue;
// returns the number of values currently in an array
int numOfSources = CFArrayGetCount(sources);
// error in CFArrayGetCount
if (numOfSources == 0) {
NSLog(@"Error in CFArrayGetCount");
return -1.0f;
}
// calculating the remaining energy
for (int i=0; i<numOfSources; i++) {
// returns a CFDictionary with readable information about the specific power source
pSource = IOPSGetPowerSourceDescription(blob, CFArrayGetValueAtIndex(sources, i));
if (!pSource) {
NSLog(@"Error in IOPSGetPowerSourceDescription");
return -1.0f;
}
psValue = (CFStringRef) CFDictionaryGetValue(pSource, CFSTR(kIOPSNameKey));
int curCapacity = 0;
int maxCapacity = 0;
double percentage;
psValue = CFDictionaryGetValue(pSource, CFSTR(kIOPSCurrentCapacityKey));
CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &curCapacity);
psValue = CFDictionaryGetValue(pSource, CFSTR(kIOPSMaxCapacityKey));
CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &maxCapacity);
percentage = ((double) curCapacity / (double) maxCapacity * 100.0f);
NSLog(@"curCapacity : %d / maxCapacity: %d , percentage: %.1f ", curCapacity, maxCapacity, percentage);
return percentage;
}
return -1.0f;
}
流量
使用Instruments的Network来,这个工具它可以获取到各个线程每秒发送的字节数量,每秒接受字节数量,发包的数量和接收包的数量。跟踪 TCP/IP 和 UDP/IP 连接