Android--获取电池信息(Battery in…
Android中电池信息(Battery information)的取得就是写一个BroadcastReceiver接受广播信息即可。
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。
代码如下:
public class BatteryTestActivity extends Activity {
protected static final int MSG_REFRESH_UI = 1000;
TextView tv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView)findViewById(R.id.tv);
}
Handler mhHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_REFRESH_UI:
tv.setText(msg.obj.toString());
break;
}
}
};
@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;
}
String s="";
s = "status:"+statusString+"\n"
+"health:"+healthString+"\n"
+"present:"+String.valueOf(present)+"\n"
+"level:"+String.valueOf(level)+"\n"
+"scale:"+String.valueOf(scale)+"\n"
+"icon_small:"+ String.valueOf(icon_small)+"\n"
+"plugged:"+acString+"\n"
+"voltage:"+String.valueOf(voltage)+"\n"
+"temperature:"+String.valueOf(temperature)+"\n"
+"technology:"+technology+"\n";
Message msg = new Message();
msg.what=MSG_REFRESH_UI;
msg.obj = s;
mhHandler.sendMessage(msg);
}
}
};
}
运行结果:
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。
代码如下:
public class BatteryTestActivity extends Activity {
protected static final int MSG_REFRESH_UI = 1000;
TextView tv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView)findViewById(R.id.tv);
}
Handler mhHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_REFRESH_UI:
tv.setText(msg.obj.toString());
break;
}
}
};
@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;
}
String s="";
s = "status:"+statusString+"\n"
+"health:"+healthString+"\n"
+"present:"+String.valueOf(present)+"\n"
+"level:"+String.valueOf(level)+"\n"
+"scale:"+String.valueOf(scale)+"\n"
+"icon_small:"+ String.valueOf(icon_small)+"\n"
+"plugged:"+acString+"\n"
+"voltage:"+String.valueOf(voltage)+"\n"
+"temperature:"+String.valueOf(temperature)+"\n"
+"technology:"+technology+"\n";
Message msg = new Message();
msg.what=MSG_REFRESH_UI;
msg.obj = s;
mhHandler.sendMessage(msg);
}
}
};
}
运行结果: