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android獲取電量

發布時間: 2025-01-08 12:44:42

❶ Android如何得到電量、溫度、電壓

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; //目前電量 private int BatteryV; //電池電壓 private double BatteryT; //電池溫度 private String BatteryStatus; //電池狀態 private String BatteryTemp; //電池使用情況 public TextView TV; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 注冊一個系統 BroadcastReceiver,作為訪問電池計量之用這個不能直接在AndroidManifest.xml中注冊 registerReceiver(mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); TV = (TextView)findViewById(R.id.TV); } /* 創建廣播接收器 */ 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, 就運行onBatteryInfoReceiver() */ if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { BatteryN = intent.getIntExtra("level", 0); //目前電量 BatteryV = intent.getIntExtra("voltage", 0); //電池電壓 BatteryT = intent.getIntExtra("temperature", 0); //電池溫度 switch

❷ Android性能測試(內存、cpu、fps、流量、GPU、電量)——adb篇

3)查看進程列表:adb shell "ps",同時也能獲取到應用的UID,方式如下(不需root許可權):

u0_a開頭的都是Android的應用進程,Android的應用的UID是從10000開始,到19999結束,可以在Process.java中查看到(FIRST_APPLICATION_UID和LAST_APPLICATION_UID),u0_a後面的數字就是該應用的UID值減去FIRST_APPLICATION_UID所得的值,所以,對於截圖這個應用進程,它是u0_a155,按前面的規制,它的UID就是155 + FIRST_APPLICATION_UID = 10155。

VSS - Virtual Set Size 虛擬耗用內存(包含共享庫佔用的內存)
RSS - Resident Set Size 實際使用物理內存(包含共享庫佔用的內存)
PSS - Proportional Set Size 實際使用的物理內存(比例分配共享庫佔用的內存)
USS - Unique Set Size 進程獨自佔用的物理內存(不包含共享庫佔用的內存)
一般來說內存佔用大小有如下規律:VSS >= RSS >= PSS >= USS

使用 adb shell "mpsys meminfo -s <pakagename | pid>"命令,輸出結果分以下4部分:

PS:在apk內調用運行獲取其他app的內存數據則需要root許可權

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

正常情況下幀率應該在16.67ms左右,1秒60幀,執行結果如下:

詳細計算方法如下:

還有一個命令是: adb shell mpsys SurfaceFlinger --latency LayerName

其中LayerName在各個不同系統中獲取的命令是不一樣的
在Android 6系統直接就是SurfaceView
在Android 7系統中可以通過 mpsys window windows | grep mSurface | grep SurfaceView 然後通過數據截取到
在Android 8系統中可以通過 mpsys SurfaceFlinger | grep android包名獲取到

執行命令結果如下:

計算方法比較簡單,一般列印出來的數據是129行(部分機型列印兩次257行,但是第一部分是無效數據,取後半部分),取len-2的第一列數據為end_time,取len-128的第一列數據為start_time
fps = 127/((end_time - start_time) / 1000000.0)
至於為啥要取第一列數據,這里不做過多介紹,歡迎參看這兩篇文章
老羅的文章SurfaceView原理
Android性能測試之fps獲取
至於為啥要處於1000000,因為命令列印出來的是納秒單位,要轉為毫秒進行計算,127就是因為命令一次列印出來127幀的數據而已

有兩種方法可以獲取
1) adb shell "top -n 5 | grep <package | pid>" ,第三列就是實時監控的CPU佔用率(-n 指定執行次數,不需root許可權),這邊top命令執行需要2到3s左右,一般可以採用busybox 的top命令執行,效率會快很多

2) adb shell "mpsys cpuinfo | grep <package | pid>"
兩種方法直接區別在於,top是持續監控狀態,而mpsys cpuinfo獲取的實時CPU佔用率數據

adb命令:adb shell "mpsys batterystats < package | pid>" (Android 5.0後引入)
獲取單個應用的耗電量信息,具體返回結果待研究

adb命令:adb shell "mpsys battery"
出現信息解讀:
AC powered:false 是否連接AC(電源)充電線
USB powered:true 是否連接USB(PC或筆記本USB插口)充電
Wireless powered:false 是否使用了無線電源
status: 1 電池狀態,2為充電狀態,其他為非充電狀態
level:58 電量(%)
scale: 100. 電量最大數值
voltage: 3977 當前電壓(mV)
current now: -335232. 當前電流(mA)
temperature:355 電池溫度,單位為0.1攝氏度

adb 命令:adb shell "mpsys< package | pid> | grep UID" [通過ps命令,獲取app的UID(安裝後唯一且固定)]
adb shell cat /proc/uid_stat/UID/tcp_rcv [cat為查看命令,讀取tcp_rcv獲取應用接收流量信息(設備重啟後清零)]
adb shell cat /proc/uid_stat/UID/tcp_snd [cat為查看命令,讀取tcp_snd獲取應用發送流量信息(設備重啟後清零)]
計算流量消耗步驟:

或者還有一種方式獲取應用流量消耗:

首先判斷類型:
cat /sys/class/thermal/thermal_zone*/type

只有紅框框出來的是有效的
cat /sys/class/thermal/thermal_zone*/temp
獲取CPU溫度

mpsys battery | grep temperature 單位0.1攝氏度

獲取/proc/stat文件內容(無許可權限制)

總的cpu時間片是 total = user+nice+system+idle+iowait+irq+softirq
忙碌時間為 notidle = user+nice+system +iowait+irq+softirq
cpu使用率計算方法為,先取開始的total值和忙碌時間notidle,隔一段時間片,再取一次計算total2,notidle2, cpuuse = (notidle2 – notidle) * 100 / (total2 - total)%

PS:由於Android 8許可權收緊,在Android 8系統手機內apk內讀取文件內容為空,需要shell許可權才可獲取文件內容,下同

讀/sys/devices/system/cpu/cpuX/cpufreq/scaling_cur_freq文件的值,X不定,看是幾核手機,scaling_cur_freq是否存在也不一定,需要判斷

至於為啥不取cpuinfo_cur_freq文件的值,原因是android 6,7系統獲取的時候,這個文件shell沒有讀取許可權,需要root許可權

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

Android 6,7系統可執行
mpsys window windows | grep "mCurrentFocus"

執行結果一般為類似:
mCurrentFocus=Window{81caaa5 u0 com.tencent.mobileqq/com.tencent.mobileqq.activity.SplashActivity}
按照一定規則把com.tencent.mobileqq提取出來即可

直接apk內讀取文件即可,不需要shell許可權(支持到Android8)
Gpu使用率獲取:會得到兩個值,(前一個/後一個)*100%=使用率
adb shell cat /sys/class/kgsl/kgsl-3d0/gpubusy

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

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

Gpu可用頻率
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當前工作模式:
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/governor

❸ android操作系統怎麼獲得電量

這個是獲取電量的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;
}
}
}
}
}
}
這個是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獲取系統cpu信息,內存,版本,電量等信息

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

通過讀取文件/proc/cpuinfo系統CPU的類型等多種信息。

讀取/proc/stat 所有CPU活動的信息來計算CPU使用率

下面我們就來講講如何通過代碼來獲取CPU頻率:

復制代碼 代碼如下:

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 {

// 獲取CPU最大頻率(單位KHZ)

// "/system/bin/cat" 命令行

// "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存儲最大頻率的文件的.路徑

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();

}

// 獲取CPU最小頻率(單位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();

}

// 實時獲取CPU當前頻率(單位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;

}

// 獲取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、內存:/proc/meminfo

復制代碼 代碼如下:

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

復制代碼 代碼如下:

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

復制代碼 代碼如下:

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;//總大小

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

}

return sdCardInfo;

}

5、電池電量

復制代碼 代碼如下:

private BroadcastReceiver batteryReceiver=new BroadcastReceiver(){

@Override

public void onReceive(Context context, Intent intent) {

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

// level加%就是當前電量了

}

};

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

6、系統的版本信息

復制代碼 代碼如下:

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地址和開機時間

復制代碼 代碼如下:

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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