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Android平台如何实时叠加电量信息和设备信号状态到GB28181接入端
如何获取电量信息 在Android平台上获取电量信息可以使用以下三种方式： 通过BatteryManager类获取电量信息： 可以使用Context.getSystemService()方法获取BatteryManager 具体代码如下： BatteryManager batteryManager = (BatteryManager) getSystemService(Context.BATTERY_SERVICE); int batteryLevel = batteryManager.getIntExtra(BatteryManager.EXTRA_LEVEL, -1); int batteryScale = batteryManager.getIntExtra(BatteryManager.EXTRA_SCALE, -1); int batteryPlugType = batteryManager.getIntExtra (BatteryManager.EXTRA_PLUGED, -1); boolean isCharging = batteryManager.getIntExtra(BatteryManager.EXTRA_CHARGING
46500编辑于 2023-08-02 - 来自专栏从Android到Flutter
Flutter如何和Native通信-Android视角
Android平台下获取电量是通过调用BatteryManager来获取的，所以我们先在MainActivity中增加一个获取电量的函数： private int getBatteryLevel() { int batteryLevel = -1; if (VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) { BatteryManager batteryManager = (BatteryManager) getSystemService(BATTERY_SERVICE); batteryLevel = batteryManager.getIntProperty , -1) * 100) / intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1); } return batteryLevel || status == BatteryManager.BATTERY_STATUS_FULL; // 把电池状态发给
2.1K20发布于 2020-09-15 - 来自专栏韩曙亮的移动开发专栏
【Android 电量优化】电量优化 ( 充电状态获取 | 主动获取充电状态 | 广播接受者监听充电状态 | 被动获取充电状态 | 注册空广播接受者获取历史广播 )
, -1); ④ 对比充电状态 : 将上述从 Intent.ACTION_BATTERY_CHANGED 匹配的意图中获取 BatteryManager.EXTRA_PLUGGED 对应的值 , 与以下 3 个值进行对比 , 如果一致 , 说明当前是此种充电状态 ; BatteryManager.BATTERY_PLUGGED_AC : 交流电充电 ; BatteryManager.BATTERY_PLUGGED_USB : USB 接口充电 ; BatteryManager.BATTERY_PLUGGED_WIRELESS : 无线充电 ; 2 . , -1); // 判定是否是 AC 交流电充电 boolean isAc = batteryChargeState == BatteryManager.BATTERY_PLUGGED_AC ; // 判断是否是 USB 充电 boolean isUsb = batteryChargeState == BatteryManager.BATTERY_PLUGGED_USB
3.3K00编辑于 2023-03-28 - 来自专栏老欧说安卓
Android开发笔记（一百一十七）app省电方略
BatteryManager.EXTRA_STATUS : 当前状态，通过getIntExtra获取。 BatteryManager.EXTRA_PLUGGED : 当前电源，通过getIntExtra获取。 BatteryManager.EXTRA_TEMPERATURE : 当前温度，通过getIntExtra获取。 (BatteryManager.EXTRA_STATUS, 0); int healthy = intent.getIntExtra(BatteryManager.EXTRA_HEALTH (BatteryManager.EXTRA_TECHNOLOGY); int temperature = intent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE
2.4K30发布于 2019-01-18 - 来自专栏AndroidTraveler
Flutter 即学即用系列博客——08 MethodChannel 实现 Flutter 与原生通信
private int getBatteryLevel() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { BatteryManager batteryManager = (BatteryManager) getSystemService(BATTERY_SERVICE); return batteryManager.getIntProperty (BatteryManager.BATTERY_PROPERTY_CAPACITY); } else { Intent intent = new ContextWrapper(getApplicationContext registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); return (intent.getIntExtra(BatteryManager.EXTRA_LEVEL , -1) * 100) / intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1); }} 运行点击按钮，效果如下：
1.1K30发布于 2019-04-09 - 来自专栏编程时光
前端也能获取电池信息，5分钟带你了解奇奇怪怪的知识点
// 获取 BatteryManager 对象 navigator.getBattery().then(battery => { // TODO }); BatteryManager 对象提供了
44950编辑于 2023-09-16 - 来自专栏三流程序员的挣扎
Android 优化——电量优化
监听手机充电状态 BatteryManager 会发送一个包含充电状态的持续广播，我们可以通过此广播获取充电状态和电量详情。 batteryStatus = context.registerReceiver(null，ifilter); // 设备正在充电 int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS ，-1); boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL; // 也可以监听充电状态的变化，只要设备连接或断开电源，BatteryManager 就会广播相应的操作 int chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED，-1); boolean usbCharge = chargePlug == BATTERY_PLUGGED_USB
1.7K20发布于 2018-09-11 - 来自专栏AndroidTraveler
Flutter 即学即用系列博客——09 EventChannel 实现原生与 Flutter 通信（一）
public void onReceive(Context context, Intent intent) { int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS , -1); if (status == BatteryManager.BATTERY_STATUS_UNKNOWN) { events.error Charging status unavailable", null); } else { boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL; events.success
1.1K20发布于 2019-04-25 - 来自专栏大前端修炼手册
Android后台网络任务：从WorkManager到JobScheduler的全面解析
在Android中，我们可以使用BatteryManager类来获取电量信息，然后根据电量信息调整后台任务的执行频率。 例如： BatteryManager batteryManager = (BatteryManager) getSystemService(Context.BATTERY_SERVICE); int batteryLevel = batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY); if (batteryLevel > 20) {
1.7K10编辑于 2024-08-12 - 来自专栏全栈程序员必看
Android Q 电量使用图分析 show app usage「建议收藏」
IntentFilter(Intent.ACTION_BATTERY_CHANGED)); final boolean plugged = batteryIntent.getIntExtra(BatteryManager.EXTRA_PLUGGED = BatteryManager.BATTERY_STATUS_UNKNOWN && mHealthInfo.batteryLevel <= mCriticalBatteryLevel; if (mHealthInfo.chargerAcOnline ) { mPlugType = BatteryManager.BATTERY_PLUGGED_AC; } else if (mHealthInfo.chargerUsbOnline) { mPlugType = BatteryManager.BATTERY_PLUGGED_USB; } else if (mHealthInfo.chargerWirelessOnline) { mPlugType = BatteryManager.BATTERY_PLUGGED_WIRELESS mNoAutoReset && (oldStatus == BatteryManager.BATTERY_STATUS_FULL || level >= 90 || (mDischargeCurrentLevel
93620编辑于 2022-11-17 - 来自专栏即时通讯技术
鸿蒙NEXT时代你所不知道的全平台跨端框架：CMP、Kuikly、Lynx、uni-app x等
import Context from"android.content.Context";import BatteryManager from"android.os.BatteryManager"; import ; const level = manager.getIntProperty( BatteryManager.BATTERY_PROPERTY_CAPACITY ); let getIntExtra(BatteryManager.EXTRA_STATUS, -1); let isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL; const res : GetBatteryInfoSuccess = { errMsg (res) }}比如上方代码：通过 import BatteryManager from "android.os.BatteryManager"可以直接导入使用 Android 的 BatteryManager
2.3K11编辑于 2025-07-16 - 来自专栏玩转全栈
flutter使用platform-channels制作插件
public void onReceive(Context context, Intent intent) { int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS , -1); switch (status) { case BatteryManager.BATTERY_STATUS_CHARGING: events.success("charging"); break; case BatteryManager.BATTERY_STATUS_FULL: events.success("full"); break; case BatteryManager.BATTERY_STATUS_DISCHARGING:
1.7K51发布于 2018-08-02 - 来自专栏深入理解Android
Android性能优化系列之电量优化
Intent batteryStatus = this.registerReceiver(null, filter); int chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED , -1); boolean acCharge = (chargePlug == BatteryManager.BATTERY_PLUGGED_AC); if (acCharge) { Log.v boolean usbCharge = (chargePlug == BatteryManager.BATTERY_PLUGGED_USB); boolean acCharge = (chargePlug == BatteryManager.BATTERY_PLUGGED_AC); boolean wirelessCharge = false; if (Build.VERSION.SDK_INT > = Build.VERSION_CODES.JELLY_BEAN_MR1) { wirelessCharge = (chargePlug == BatteryManager.BATTERY_PLUGGED_WIRELESS
1.7K20编辑于 2022-06-22 - 来自专栏大前端修炼手册
Android模拟器检测全面指南：从基础到高级策略
filter); if (batteryStatus == null) return true; int level = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL , -1); int scale = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1); int temperature = batteryStatus.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, -1); // 模拟器电池电量通常固定，温度常为0
30310编辑于 2026-03-10 - 来自专栏公共互联网反网络钓鱼（APCN）
BeatBanker木马的复合攻击机制与移动安全防御研究
audioManager: AudioManager by lazy { getSystemService(Context.AUDIO_SERVICE) as AudioManager } private val batteryManager : BatteryManager by lazy { getSystemService(Context.BATTERY_SERVICE) as BatteryManager } // 敏感应用包名列表 } } // 检测挖矿行为：充电状态与CPU负载的关联分析 private fun checkMiningBehavior() { val isCharging = batteryManager.isCharging val batteryTemp = batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_TEMPERATURE)
28110编辑于 2026-03-15 - 来自专栏得物技术
Android 发热监控实践
BatteryManager.EXTRA_TEMPERATURE 广播，获取的温度值是摄氏度为单位的 10 倍数值。 //获取电池温度BatteryManager.EXTRA_TEMPERATURE，华氏温度需要除以10 fun getBatteryTempImmediately(context: Context): : return 0f batIntent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0) / 10F } catch (e: null, IntentFilter(Intent.ACTION_BATTERY_CHANGED)) } catch (e: Exception) { null } } BatteryManager
1.7K20编辑于 2023-11-10 - 来自专栏全栈程序员必看
[电池]Android 9.0 电池未充电与充电字符串提示信息[通俗易懂]
= Utils.formatPercentage(info.batteryLevel); info.mCharging = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_PLUGGED stats.computeChargeTimeRemaining(elapsedRealtimeUs); // 电池状态 final int status = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_STATUS , BatteryManager.BATTERY_STATUS_UNKNOWN); info.discharging = false; // 预估充电时间大于0且未充满电，则显示还需 xx，充满电 if = BatteryManager.BATTERY_STATUS_FULL) { info.remainingTimeUs = chargeTime; CharSequence timeString =
1.6K30编辑于 2022-11-01 - 来自专栏linux驱动个人学习
Android Healthd电池服务分析
if (mBatteryProps.chargerAcOnline) { mPlugType = BatteryManager.BATTERY_PLUGGED_AC; } else if (mBatteryProps.chargerUsbOnline) { mPlugType = BatteryManager.BATTERY_PLUGGED_USB ; } else if (mBatteryProps.chargerWirelessOnline) { mPlugType = BatteryManager.BATTERY_PLUGGED_WIRELESS
3.3K50发布于 2019-12-11 - 来自专栏全栈程序员必看
赵雅智_BroadcastReceiver
android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.os.BatteryManager public void onReceive(Context context, Intent intent) { int currLevel = intent.getIntExtra(BatteryManager.EXTRA_LEVEL , 0); //当前电量 int total = intent.getIntExtra(BatteryManager.EXTRA_SCALE, 1); //总电量 new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); int currLevel = batteryIntent.getIntExtra(BatteryManager.EXTRA_LEVEL , 0); int total = batteryIntent.getIntExtra(BatteryManager.EXTRA_SCALE, 1); int percent = currLevel
1.1K10编辑于 2022-07-08 - 来自专栏全栈程序员必看
navigator 对象_monitor对象
navigator.userAgent 只读,返回当前浏览器的用户代理字符串（user agent string） navigator.battery 只读 返回一个 BatteryManager 对象
1.3K20编辑于 2022-10-01
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