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android获取电量

发布时间: 2025-01-08 12:44:42

❶ Android如何得到电量、温度、电压

package com.LB; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.BatteryManager; import android.os.Bundle; import android.widget.TextView; public class Battery extends Activity { private int BatteryN; //目前电量 private int BatteryV; //电池电压 private double BatteryT; //电池温度 private String BatteryStatus; //电池状态 private String BatteryTemp; //电池使用情况 public TextView TV; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 注册一个系统 BroadcastReceiver,作为访问电池计量之用这个不能直接在AndroidManifest.xml中注册 registerReceiver(mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); TV = (TextView)findViewById(R.id.TV); } /* 创建广播接收器 */ private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); /* * 如果捕捉到的action是ACTION_BATTERY_CHANGED, 就运行onBatteryInfoReceiver() */ if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { BatteryN = intent.getIntExtra("level", 0); //目前电量 BatteryV = intent.getIntExtra("voltage", 0); //电池电压 BatteryT = intent.getIntExtra("temperature", 0); //电池温度 switch

❷ Android性能测试(内存、cpu、fps、流量、GPU、电量)——adb篇

3)查看进程列表:adb shell "ps",同时也能获取到应用的UID,方式如下(不需root权限):

u0_a开头的都是Android的应用进程,Android的应用的UID是从10000开始,到19999结束,可以在Process.java中查看到(FIRST_APPLICATION_UID和LAST_APPLICATION_UID),u0_a后面的数字就是该应用的UID值减去FIRST_APPLICATION_UID所得的值,所以,对于截图这个应用进程,它是u0_a155,按前面的规制,它的UID就是155 + FIRST_APPLICATION_UID = 10155。

VSS - Virtual Set Size 虚拟耗用内存(包含共享库占用的内存)
RSS - Resident Set Size 实际使用物理内存(包含共享库占用的内存)
PSS - Proportional Set Size 实际使用的物理内存(比例分配共享库占用的内存)
USS - Unique Set Size 进程独自占用的物理内存(不包含共享库占用的内存)
一般来说内存占用大小有如下规律:VSS >= RSS >= PSS >= USS

使用 adb shell "mpsys meminfo -s <pakagename | pid>"命令,输出结果分以下4部分:

PS:在apk内调用运行获取其他app的内存数据则需要root权限

adb命令:adb shell mpsys gfxinfo <package | pid>

正常情况下帧率应该在16.67ms左右,1秒60帧,执行结果如下:

详细计算方法如下:

还有一个命令是: adb shell mpsys SurfaceFlinger --latency LayerName

其中LayerName在各个不同系统中获取的命令是不一样的
在Android 6系统直接就是SurfaceView
在Android 7系统中可以通过 mpsys window windows | grep mSurface | grep SurfaceView 然后通过数据截取到
在Android 8系统中可以通过 mpsys SurfaceFlinger | grep android包名获取到

执行命令结果如下:

计算方法比较简单,一般打印出来的数据是129行(部分机型打印两次257行,但是第一部分是无效数据,取后半部分),取len-2的第一列数据为end_time,取len-128的第一列数据为start_time
fps = 127/((end_time - start_time) / 1000000.0)
至于为啥要取第一列数据,这里不做过多介绍,欢迎参看这两篇文章
老罗的文章SurfaceView原理
Android性能测试之fps获取
至于为啥要处于1000000,因为命令打印出来的是纳秒单位,要转为毫秒进行计算,127就是因为命令一次打印出来127帧的数据而已

有两种方法可以获取
1) adb shell "top -n 5 | grep <package | pid>" ,第三列就是实时监控的CPU占用率(-n 指定执行次数,不需root权限),这边top命令执行需要2到3s左右,一般可以采用busybox 的top命令执行,效率会快很多

2) adb shell "mpsys cpuinfo | grep <package | pid>"
两种方法直接区别在于,top是持续监控状态,而mpsys cpuinfo获取的实时CPU占用率数据

adb命令:adb shell "mpsys batterystats < package | pid>" (Android 5.0后引入)
获取单个应用的耗电量信息,具体返回结果待研究

adb命令:adb shell "mpsys battery"
出现信息解读:
AC powered:false 是否连接AC(电源)充电线
USB powered:true 是否连接USB(PC或笔记本USB插口)充电
Wireless powered:false 是否使用了无线电源
status: 1 电池状态,2为充电状态,其他为非充电状态
level:58 电量(%)
scale: 100. 电量最大数值
voltage: 3977 当前电压(mV)
current now: -335232. 当前电流(mA)
temperature:355 电池温度,单位为0.1摄氏度

adb 命令:adb shell "mpsys< package | pid> | grep UID" [通过ps命令,获取app的UID(安装后唯一且固定)]
adb shell cat /proc/uid_stat/UID/tcp_rcv [cat为查看命令,读取tcp_rcv获取应用接收流量信息(设备重启后清零)]
adb shell cat /proc/uid_stat/UID/tcp_snd [cat为查看命令,读取tcp_snd获取应用发送流量信息(设备重启后清零)]
计算流量消耗步骤:

或者还有一种方式获取应用流量消耗:

首先判断类型:
cat /sys/class/thermal/thermal_zone*/type

只有红框框出来的是有效的
cat /sys/class/thermal/thermal_zone*/temp
获取CPU温度

mpsys battery | grep temperature 单位0.1摄氏度

获取/proc/stat文件内容(无权限限制)

总的cpu时间片是 total = user+nice+system+idle+iowait+irq+softirq
忙碌时间为 notidle = user+nice+system +iowait+irq+softirq
cpu使用率计算方法为,先取开始的total值和忙碌时间notidle,隔一段时间片,再取一次计算total2,notidle2, cpuuse = (notidle2 – notidle) * 100 / (total2 - total)%

PS:由于Android 8权限收紧,在Android 8系统手机内apk内读取文件内容为空,需要shell权限才可获取文件内容,下同

读/sys/devices/system/cpu/cpuX/cpufreq/scaling_cur_freq文件的值,X不定,看是几核手机,scaling_cur_freq是否存在也不一定,需要判断

至于为啥不取cpuinfo_cur_freq文件的值,原因是android 6,7系统获取的时候,这个文件shell没有读取权限,需要root权限

参考文章: https://blog.csdn.net/long_meng/article/details/45934899

Android 6,7系统可执行
mpsys window windows | grep "mCurrentFocus"

执行结果一般为类似:
mCurrentFocus=Window{81caaa5 u0 com.tencent.mobileqq/com.tencent.mobileqq.activity.SplashActivity}
按照一定规则把com.tencent.mobileqq提取出来即可

直接apk内读取文件即可,不需要shell权限(支持到Android8)
Gpu使用率获取:会得到两个值,(前一个/后一个)*100%=使用率
adb shell cat /sys/class/kgsl/kgsl-3d0/gpubusy

Gpu工作频率:
adb shell cat /sys/class/kgsl/kgsl-3d0/gpuclk
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/cur_freq

Gpu最大、最小工作频率:
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/max_freq
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/min_freq

Gpu可用频率
adb shell cat /sys/class/kgsl/kgsl-3d0/gpu_available_frequencies
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/available_frequencies

Gpu可用工作模式:
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/available_governors

Gpu当前工作模式:
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/governor

❸ android操作系统怎么获得电量

这个是获取电量的android DEMO:
package com.android.batterywaster;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.os.Bundle;
import android.os.PowerManager;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;

import java.text.DateFormat;
import java.util.Date;

/**
* So you thought sync used up your battery life.
*/
public class BatteryWaster extends Activity {
TextView mLog;
DateFormat mDateFormat;
IntentFilter mFilter;
PowerManager.WakeLock mWakeLock;
SpinThread mThread;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

// Set the layout for this activity. You can find it
// in res/layout/hello_activity.xml
setContentView(R.layout.main);

findViewById(R.id.checkbox).setOnClickListener(mClickListener);
mLog = (TextView)findViewById(R.id.log);

mDateFormat = DateFormat.getInstance();

mFilter = new IntentFilter();
mFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
mFilter.addAction(Intent.ACTION_BATTERY_LOW);
mFilter.addAction(Intent.ACTION_BATTERY_OKAY);
mFilter.addAction(Intent.ACTION_POWER_CONNECTED);

PowerManager pm = (PowerManager)getSystemService(POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "BatteryWaster");
mWakeLock.setReferenceCounted(false);
}

@Override
public void onPause() {
stopRunning();
}

View.OnClickListener mClickListener = new View.OnClickListener() {
public void onClick(View v) {
CheckBox checkbox = (CheckBox)v;
if (checkbox.isChecked()) {
startRunning();
} else {
stopRunning();
}
}
};

void startRunning() {
log("Start");
registerReceiver(mReceiver, mFilter);
mWakeLock.acquire();
if (mThread == null) {
mThread = new SpinThread();
mThread.start();
}
}

void stopRunning() {
log("Stop");
unregisterReceiver(mReceiver);
mWakeLock.release();
if (mThread != null) {
mThread.quit();
mThread = null;
}
}

void log(String s) {
mLog.setText(mLog.getText() + "\n" + mDateFormat.format(new Date()) + ": " + s);
}

BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
String title = action;
int index = title.lastIndexOf('.');
if (index >= 0) {
title = title.substring(index + 1);
}
if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
int icon = intent.getIntExtra(BatteryManager.EXTRA_ICON_SMALL,-1);
log(title + ": level=" + level + "\n" + "icon:" + icon);
} else {
log(title);
}
}
};

class SpinThread extends Thread {
private boolean mStop;

public void quit() {
synchronized (this) {
mStop = true;
}
}

public void run() {
while (true) {
synchronized (this) {
if (mStop) {
return;
}
}
}
}
}
}
这个是layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>

<CheckBox android:id="@+id/checkbox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="25dp"
android:layout_marginTop="25dp"
android:textSize="18sp"
android:textColor="#ffffffff"
android:text="@string/waste_away"
/>

<ScrollView android:id="@+id/scroll"
android:layout_width="fill_parent"
android:layout_height="0px"
android:layout_weight="1"
>
<TextView android:id="@+id/log"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="25dp"
android:textSize="12sp"
android:textColor="#ffffffff"
/>
</ScrollView>

</LinearLayout>

❹ Android获取系统cpu信息,内存,版本,电量等信息

1、CPU频率,CPU信息:/proc/cpuinfo和/proc/stat

通过读取文件/proc/cpuinfo系统CPU的类型等多种信息。

读取/proc/stat 所有CPU活动的信息来计算CPU使用率

下面我们就来讲讲如何通过代码来获取CPU频率:

复制代码 代码如下:

package com.orange.cpu;

import java.io.BufferedReader;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStream;

public class CpuManager {

// 获取CPU最大频率(单位KHZ)

// "/system/bin/cat" 命令行

// "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存储最大频率的文件的.路径

public static String getMaxCpuFreq() {

String result = "";

ProcessBuilder cmd;

try {

String[] args = { "/system/bin/cat",

"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" };

cmd = new ProcessBuilder(args);

Process process = cmd.start();

InputStream in = process.getInputStream();

byte[] re = new byte[24];

while (in.read(re) != -1) {

result = result + new String(re);

}

in.close();

} catch (IOException ex) {

ex.printStackTrace();

result = "N/A";

}

return result.trim();

}

// 获取CPU最小频率(单位KHZ)

public static String getMinCpuFreq() {

String result = "";

ProcessBuilder cmd;

try {

String[] args = { "/system/bin/cat",

"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq" };

cmd = new ProcessBuilder(args);

Process process = cmd.start();

InputStream in = process.getInputStream();

byte[] re = new byte[24];

while (in.read(re) != -1) {

result = result + new String(re);

}

in.close();

} catch (IOException ex) {

ex.printStackTrace();

result = "N/A";

}

return result.trim();

}

// 实时获取CPU当前频率(单位KHZ)

public static String getCurCpuFreq() {

String result = "N/A";

try {

FileReader fr = new FileReader(

"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");

BufferedReader br = new BufferedReader(fr);

String text = br.readLine();

result = text.trim();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return result;

}

// 获取CPU名字

public static String getCpuName() {

try {

FileReader fr = new FileReader("/proc/cpuinfo");

BufferedReader br = new BufferedReader(fr);

String text = br.readLine();

String[] array = text.split(":s+", 2);

for (int i = 0; i < array.length; i++) {

}

return array[1];

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

}

2、内存:/proc/meminfo

复制代码 代码如下:

public void getTotalMemory() {

String str1 = "/proc/meminfo";

String str2="";

try {

FileReader fr = new FileReader(str1);

BufferedReader localBufferedReader = new BufferedReader(fr, 8192);

while ((str2 = localBufferedReader.readLine()) != null) {

Log.i(TAG, "---" + str2);

}

} catch (IOException e) {

}

}

3、Rom大小

复制代码 代码如下:

public long[] getRomMemroy() {

long[] romInfo = new long[2];

//Total rom memory

romInfo[0] = getTotalInternalMemorySize();

//Available rom memory

File path = Environment.getDataDirectory();

StatFs stat = new StatFs(path.getPath());

long blockSize = stat.getBlockSize();

long availableBlocks = stat.getAvailableBlocks();

romInfo[1] = blockSize * availableBlocks;

getVersion();

return romInfo;

}

public long getTotalInternalMemorySize() {

File path = Environment.getDataDirectory();

StatFs stat = new StatFs(path.getPath());

long blockSize = stat.getBlockSize();

long totalBlocks = stat.getBlockCount();

return totalBlocks * blockSize;

}

4、sdCard大小

复制代码 代码如下:

public long[] getSDCardMemory() {

long[] sdCardInfo=new long[2];

String state = Environment.getExternalStorageState();

if (Environment.MEDIA_MOUNTED.equals(state)) {

File sdcardDir = Environment.getExternalStorageDirectory();

StatFs sf = new StatFs(sdcardDir.getPath());

long bSize = sf.getBlockSize();

long bCount = sf.getBlockCount();

long availBlocks = sf.getAvailableBlocks();

sdCardInfo[0] = bSize * bCount;//总大小

sdCardInfo[1] = bSize * availBlocks;//可用大小

}

return sdCardInfo;

}

5、电池电量

复制代码 代码如下:

private BroadcastReceiver batteryReceiver=new BroadcastReceiver(){

@Override

public void onReceive(Context context, Intent intent) {

int level = intent.getIntExtra("level", 0);

// level加%就是当前电量了

}

};

registerReceiver(batteryReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

6、系统的版本信息

复制代码 代码如下:

public String[] getVersion(){

String[] version={"null","null","null","null"};

String str1 = "/proc/version";

String str2;

String[] arrayOfString;

try {

FileReader localFileReader = new FileReader(str1);

BufferedReader localBufferedReader = new BufferedReader(

localFileReader, 8192);

str2 = localBufferedReader.readLine();

arrayOfString = str2.split("s+");

version[0]=arrayOfString[2];//KernelVersion

localBufferedReader.close();

} catch (IOException e) {

}

version[1] = Build.VERSION.RELEASE;// firmware version

version[2]=Build.MODEL;//model

version[3]=Build.DISPLAY;//system version

return version;

}

7、mac地址和开机时间

复制代码 代码如下:

public String[] getOtherInfo(){

String[] other={"null","null"};

WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);

WifiInfo wifiInfo = wifiManager.getConnectionInfo();

if(wifiInfo.getMacAddress()!=null){

other[0]=wifiInfo.getMacAddress();

} else {

other[0] = "Fail";

}

other[1] = getTimes();

return other;

}

private String getTimes() {

long ut = SystemClock.elapsedRealtime() / 1000;

if (ut == 0) {

ut = 1;

}

int m = (int) ((ut / 60) % 60);

int h = (int) ((ut / 3600));

return h + " " + mContext.getString(R.string.info_times_hour) + m + " "

+ mContext.getString(R.string.info_times_minute);

}

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