Android 获取电池信息

Android中电池信息(Battery information)的取得

这里介绍电池信息的取得.

Android.content.BroadcastReceiver类

Android.os.BatteryManager类

● 电池信息的取得，调用registerReceiver()方法。

第1个参数，设置BroadcastReceiver实例

第2个参数，设置追加了Intent.ACTION_BATTERY_CHANGED处理的IntentFilter实例。

● 在BroadcastReceiver的onReceive()事件，接收到的Intent.ACTION_BATTERY_CHANGED，包括下面的信息。

“status”（int类型）…状态，定义值是BatteryManager.BATTERY_STATUS_XXX。

“health”（int类型）…健康，定义值是BatteryManager.BATTERY_HEALTH_XXX。

“present”（boolean类型）

“level”（int类型）…电池剩余容量

“scale”（int类型）…电池最大值。通常为100。

“icon-small”（int类型）…图标ID。

“plugged”（int类型）…连接的电源插座，定义值是BatteryManager.BATTERY_PLUGGED_XXX。

“voltage”（int类型）…mV。

“temperature”（int类型）…温度，0.1度单位。例如 表示197的时候，意思为19.7度。

“technology”（String类型）…电池类型，例如，Li-ion等等。

[java] view
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package dev.demo.batterytest;

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.util.Log;

public class BatteryTestActivity extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

}

@Override

protected void onResume() {

super.onResume();

IntentFilter filter = new IntentFilter();

filter.addAction(Intent.ACTION_BATTERY_CHANGED);

registerReceiver(mBroadcastReceiver, filter);

}

@Override

protected void onPause() {

super.onPause();

unregisterReceiver(mBroadcastReceiver);

}

private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

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

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

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

boolean present = intent.getBooleanExtra("present", false);

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

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

int icon_small = intent.getIntExtra("icon-small", 0);

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

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

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

String technology = intent.getStringExtra("technology");

String statusString = "";

switch (status) {

case BatteryManager.BATTERY_STATUS_UNKNOWN:

statusString = "unknown";

break;

case BatteryManager.BATTERY_STATUS_CHARGING:

statusString = "charging";

break;

case BatteryManager.BATTERY_STATUS_DISCHARGING:

statusString = "discharging";

break;

case BatteryManager.BATTERY_STATUS_NOT_CHARGING:

statusString = "not charging";

break;

case BatteryManager.BATTERY_STATUS_FULL:

statusString = "full";

break;

}

String healthString = "";

switch (health) {

case BatteryManager.BATTERY_HEALTH_UNKNOWN:

healthString = "unknown";

break;

case BatteryManager.BATTERY_HEALTH_GOOD:

healthString = "good";

break;

case BatteryManager.BATTERY_HEALTH_OVERHEAT:

healthString = "overheat";

break;

case BatteryManager.BATTERY_HEALTH_DEAD:

healthString = "dead";

break;

case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:

healthString = "voltage";

break;

case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:

healthString = "unspecified failure";

break;

}

String acString = "";

switch (plugged) {

case BatteryManager.BATTERY_PLUGGED_AC:

acString = "plugged ac";

break;

case BatteryManager.BATTERY_PLUGGED_USB:

acString = "plugged usb";

break;

}

Log.v("status", statusString);

Log.v("health", healthString);

Log.v("present", String.valueOf(present));

Log.v("level", String.valueOf(level));

Log.v("scale", String.valueOf(scale));

Log.v("icon_small", String.valueOf(icon_small));

Log.v("plugged", acString);

Log.v("voltage", String.valueOf(voltage));

Log.v("temperature", String.valueOf(temperature));

Log.v("technology", technology);

}

}

};