Andriod 获取电池的信息实例代码

<?xml version="1.0"?>
<LinearLayout android:orientation="vertical" android:layout_height="match_parent" android:layout_width="match_parent" xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android">
<Button android:layout_height="wrap_content" android:layout_width="match_parent" android:text="获取电池的信息" android:id="@+id/btn_battery"/>
<TextView android:layout_height="wrap_content" android:layout_width="match_parent" android:id="@+id/tv_battery"/>
</LinearLayout> 
package com.example.yanlei.wifi;
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.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
// 定义电池信息的按钮
private Button btnBattery;
// 定义显示电池信息的textview
private TextView tvBattery;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 得到布局中的所有对象
findView();
// 设置对象的监听器
setListener();
}
private void findView() {
// 得到布局中的所有对象
btnBattery = (Button) findViewById(R.id.btn_battery);
tvBattery = (TextView) findViewById(R.id.tv_battery);
}
// 设置对象的监听器
private void setListener() {
btnBattery.setOnClickListener(listener);
}
OnClickListener listener = new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
// 当前的音量
case R.id.btn_battery:
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_BATTERY_CHANGED);
registerReceiver(mBroadcastReceiver, filter);
break;
}
}
};
// 声明广播接受者对象
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
// 得到电池状态：
// BatteryManager.BATTERY_STATUS_CHARGING：充电状态。
// BatteryManager.BATTERY_STATUS_DISCHARGING：放电状态。
// BatteryManager.BATTERY_STATUS_NOT_CHARGING：未充满。
// BatteryManager.BATTERY_STATUS_FULL：充满电。
// BatteryManager.BATTERY_STATUS_UNKNOWN：未知状态。
int status = intent.getIntExtra("status", 0);
// 得到健康状态：
// BatteryManager.BATTERY_HEALTH_GOOD：状态良好。
// BatteryManager.BATTERY_HEALTH_DEAD：电池没有电。
// BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE：电池电压过高。
// BatteryManager.BATTERY_HEALTH_OVERHEAT：电池过热。
// BatteryManager.BATTERY_HEALTH_UNKNOWN：未知状态。
int health = intent.getIntExtra("health", 0);
// boolean类型
boolean present = intent.getBooleanExtra("present", false);
// 得到电池剩余容量
int level = intent.getIntExtra("level", 0);
// 得到电池最大值。通常为100。
int scale = intent.getIntExtra("scale", 0);
// 得到图标ID
int icon_small = intent.getIntExtra("icon-small", 0);
// 充电方式：　BatteryManager.BATTERY_PLUGGED_AC：AC充电。　BatteryManager.BATTERY_PLUGGED_USB：USB充电。
int plugged = intent.getIntExtra("plugged", 0);
// 得到电池的电压
int voltage = intent.getIntExtra("voltage", 0);
// 得到电池的温度,0.1度单位。例如 表示197的时候，意思为19.7度
int temperature = intent.getIntExtra("temperature", 0);
// 得到电池的类型
String technology = intent.getStringExtra("technology");
// 得到电池状态
String statusString = "";
// 根据状态id，得到状态字符串
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;
}
//得到电池的寿命状态
String healthString = "";
//根据状态id，得到电池寿命
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;
}
//得到充电模式
String acString = "";
//根据充电状态id，得到充电模式
switch (plugged) {
case BatteryManager.BATTERY_PLUGGED_AC:
acString = "plugged ac";
break;
case BatteryManager.BATTERY_PLUGGED_USB:
acString = "plugged usb";
break;
}
//显示电池信息
tvBattery.setText("电池的状态：" + statusString
+ "\n健康值: "+ healthString
+ "\n电池剩余容量： " + level
+ "\n电池的最大值：" + scale
+ "\n小图标：" + icon_small
+ "\n充电方式：" + plugged
+ "\n充电方式: " + acString
+ "\n电池的电压：" + voltage
+ "\n电池的温度：" + (float) temperature * 0.1
+ "\n电池的类型：" + technology);
}
}
};
@Override
protected void onPause() {
super.onPause();
// 解除注册监听
unregisterReceiver(mBroadcastReceiver);
}
}