Android手機(jī)電池管理

安卓系統(tǒng)通過廣播來接受電池狀態(tài)剩檀，下面是我寫的一個簡單電池管理項目怠益。

廣播接受類BatteryReceiver如下：

package com.lml.batteryshow;

import java.util.HashMap;

import java.util.Map;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.os.BatteryManager;

import android.os.Message;

public class BatteryReceiver extends BroadcastReceiver {

Message message;

Map map = null;

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {

map = new HashMap();

/** 電池剩余電量 */

map.put("level",? intent.getIntExtra("level", 0)+"");

/** 獲取電池滿電量數(shù)值 */

map.put("scale",? intent.getIntExtra("scale", 0)+"");

/** 獲取電池技術(shù)支持 */

map.put("technology", intent.getStringExtra("technology"));

/** 獲取電池狀態(tài) */

map.put("status",? intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN)+"");

/** 獲取電源信息 */

map.put("plugType",? intent.getIntExtra("plugged", 0)+"");

/** 獲取電池健康度 */

map.put("health",? intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN)+"");

/** 獲取電池電壓 */

map.put("voltage", intent.getIntExtra("voltage", 0) + "");

/** 獲取電池溫度 */

map.put("temperature", intent.getIntExtra("temperature", 0) + "");

}

if (map != null) {

message = new Message();

message.obj = map;

MainActivity.handler1.dispatchMessage(message);

}

主類MainActivity代碼實現(xiàn)如下：

package com.lml.batteryshow;

import java.text.DecimalFormat;

import java.util.Map;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.os.SystemClock;

import android.app.Activity;

import android.content.Intent;

import android.content.IntentFilter;

import android.widget.TextView;

public class MainActivity extends Activity {

/** 電池狀態(tài) */

private TextView battery_Status;

/** 電池允許狀態(tài) */

private TextView battery_Run_Status;

/** 電池電壓 */

private TextView battery_Voltage;

/** 電池溫度 */

private TextView battery_Temperature;

/** 電池技術(shù) */

private TextView battery_Technology;

/** 電池運行時間 */

private TextView battery_Time;

/** 電池電量 */

private TextView battery_Level;

Thread? thread;

public static Handler handler1;

public Handler handler2;

BatteryReceiver receiver;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

init();

thread= new Thread(runnable);

thread.start();

regReceiver();

handler1 = new Handler() {

@Override

public void handleMessage(Message msg) {

MainActivity.this.handleMessage(msg);

}

};

/** 設(shè)置啟動時間 */

handler2 = new Handler() {

@Override

public void handleMessage(Message msg) {

battery_Time.setText("啟動后時間："+msg.obj.toString());

}

};

}

private void regReceiver() {

IntentFilter filter = new IntentFilter();

filter.addAction(Intent.ACTION_BATTERY_CHANGED);

receiver=new BatteryReceiver();

registerReceiver(receiver, filter);

}

private void handleMessage(Message msg){

@SuppressWarnings("unchecked")

Map map = (Map) msg.obj;

String plugType=map.get("plugType");

/** 設(shè)置電池狀態(tài) 為USB充電 */

if (plugType.equals("2")) {

battery_Status.setText("電池狀態(tài)：正在充電(USB)");

}

/** 設(shè)置電池狀態(tài) 為交流電充電 */

else if (plugType.equals("1")) {

battery_Status.setText("電池狀態(tài)：正在充電(交流電)");

}

/** 設(shè)置電池狀態(tài) */

else if (plugType.equals("0")) {

battery_Status.setText("電池狀態(tài)：正在耗電");

}

/** 獲取電池健康度 */

String? health = map.get("health");

if (health.equals(2)) {

battery_Run_Status.setText("電池健康度；正常");

} else {

battery_Run_Status.setText("電池健康度纱烘；一般");

}

/** 設(shè)置電池電壓 */

battery_Voltage.setText( "電池電壓："+map.get("voltage") + "mV");

/** 設(shè)置電池溫度 */

double temp = Double.parseDouble(map.get("temperature") );

battery_Temperature.setText("電池溫度："+ (temp / 10) + "°C");

/** 獲取電池滿電量數(shù)值 */

double scale = Double.parseDouble(map.get("scale") );

/** 獲取電池剩余電量 */

double level = Double.parseDouble(map.get("level") );

double per =level/scale;

String strPer=optionNum(per);

/** 設(shè)置電池電量 */

battery_Level.setText("電池電量："+Double.parseDouble(strPer) * 100 + "%");

/** 設(shè)置電池技術(shù) */

battery_Technology.setText( "電池技術(shù)："+map.get("technology"));

}

@Override

protected void onDestroy() {

super.onDestroy();

thread.interrupt();

unregisterReceiver(receiver);

}

public String optionNum(double f) {

DecimalFormat df = new DecimalFormat("#.00");

return df.format(f);

}

private void init() {

/** 獲取電池狀態(tài)對象 */

battery_Status = (TextView) findViewById(R.id.battery_status);

/** 獲取電池運行狀態(tài) */

battery_Run_Status = (TextView) findViewById(R.id.battery_health);

/** 獲取電池電壓 */

battery_Voltage = (TextView) findViewById(R.id.battery_voltage);

/** 獲取電池溫度 */

battery_Temperature = (TextView) findViewById(R.id.battery_temperature);

/** 獲取電池技術(shù) */

battery_Technology = (TextView) findViewById(R.id.battery_technology);

/** 開機(jī)電池運行時間 */

battery_Time = (TextView) findViewById(R.id.boot_time);

/** 獲取電池電量對象 */

battery_Level = (TextView) findViewById(R.id.battery);

}

Runnable runnable=new Runnable() {

@Override

public void run() {

while (true) {

try {

Thread.sleep(1000);

long temp = SystemClock.elapsedRealtime();

Message message = new Message();

message.obj = Util.transitionTime(temp);

handler2.sendMessage(message);

} catch (InterruptedException e) {

e.printStackTrace();

}

};

}

幫助類util如下：

package com.lml.batteryshow;

public class Util {

public static String transitionTime(long time) {

long temp1 = time / 1000;

long temp2 = temp1 / 60;

long temp3 = temp2 / 60;

String h = temp3 % 60 + "";

String m = temp2 % 60 + "";

String s = temp1 % 60 + "";

if (m.length() < 2) {

m = "0" + m;

}

if (s.length() < 2) {

s = "0" + s;

}

String time1 = h + ":" + m + ":" + s;

System.out.println(time1);

return time1;

}

布局文件activity_main.xml如下：