Android如何得到电量、温度、电压
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com.LB里面主程序Battery代码:
- 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 (intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN))
- {
- case BatteryManager.BATTERY_STATUS_CHARGING:
- BatteryStatus = "充电状态";
- break;
- case BatteryManager.BATTERY_STATUS_DISCHARGING:
- BatteryStatus = "放电状态";
- break;
- case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
- BatteryStatus = "未充电";
- break;
- case BatteryManager.BATTERY_STATUS_FULL:
- BatteryStatus = "充满电";
- break;
- case BatteryManager.BATTERY_STATUS_UNKNOWN:
- BatteryStatus = "未知道状态";
- break;
- }
- switch (intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN))
- {
- case BatteryManager.BATTERY_HEALTH_UNKNOWN:
- BatteryTemp = "未知错误";
- break;
- case BatteryManager.BATTERY_HEALTH_GOOD:
- BatteryTemp = "状态良好";
- break;
- case BatteryManager.BATTERY_HEALTH_DEAD:
- BatteryTemp = "电池没有电";
- break;
- case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
- BatteryTemp = "电池电压过高";
- break;
- case BatteryManager.BATTERY_HEALTH_OVERHEAT:
- BatteryTemp = "电池过热";
- break;
- }
- TV.setText("目前电量为" + BatteryN + "% --- " + BatteryStatus + "\n" + "电压为" + BatteryV + "mV --- " + BatteryTemp + "\n" + "温度为" + (BatteryT*0.1) + "℃");
- }
- }
- };
- }
layout的xml代码
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <TextView
- android:id = "@+id/TV"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- />
- </LinearLayout>
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