Android Get battery status

<Relativelayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical" >    <ButtonAndroid:id= "@+id/btn_battery"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"Android:text= "Get information on battery" />    <TextViewAndroid:id= "@+id/tv_battery"Android:layout_width= "Match_parent"Android:layout_height= "Wrap_content"        /></Relativelayout>

 PackageCom.example.yanlei.yl;ImportAndroid.content.BroadcastReceiver;ImportAndroid.content.Context;Importandroid.content.Intent;ImportAndroid.content.IntentFilter;ImportAndroid.os.BatteryManager;ImportAndroid.os.Bundle;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.Button;ImportAndroid.widget.TextView; Public classMainactivityextendsappcompatactivity {//button to define battery information    PrivateButton Btnbattery; //define TextView to display battery information    PrivateTextView Tvbattery; @Override Public voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); //get all the objects in the layoutFindview (); //set listener for objectSetlistener (); }    Private voidFindview () {//get all the objects in the layoutBtnbattery =(Button) Findviewbyid (r.id.btn_battery); Tvbattery=(TextView) Findviewbyid (r.id.tv_battery); }    //set listener for object    Private voidSetlistener () {Btnbattery.setonclicklistener (listener); } Onclicklistener Listener=NewOnclicklistener () {@Override Public voidOnClick (View v) {//TODO auto-generated Method Stub            Switch(V.getid ()) {//the current volume                 Caser.id.btn_battery:intentfilter Filter=NewIntentfilter ();                    Filter.addaction (intent.action_battery_changed);                    Registerreceiver (mbroadcastreceiver, filter);  Break;    }        }    }; //declaring a broadcast recipient object    PrivateBroadcastreceiver Mbroadcastreceiver =NewBroadcastreceiver () {@Override Public voidOnReceive (Context context, Intent Intent) {//TODO auto-generated Method StubString action =intent.getaction (); if(Action.equals (intent.action_battery_changed)) {//Get battery Status://batterymanager.battery_status_charging: Charging status. //batterymanager.battery_status_discharging: Discharge status. //batterymanager.battery_status_not_charging: Not full. //batterymanager.battery_status_full: Full power. //Batterymanager.battery_status_unknown: Unknown state.                 intStatus = Intent.getintextra ("status", 0); //Get health status://Batterymanager.battery_health_good: in good condition. //Batterymanager.battery_health_dead: The battery has no electricity. //batterymanager.battery_health_over_voltage: The battery voltage is too high. //Batterymanager.battery_health_overheat: The battery is overheating. //Batterymanager.battery_health_unknown: Unknown state.                 intHealth = Intent.getintextra ("Health", 0); //Boolean type                BooleanPresent = Intent.getbooleanextra ("Present",false); //get the remaining capacity of the battery                intLevel = Intent.getintextra ("level", 0); //get the maximum battery value. is usually 100.                 intScale = Intent.getintextra ("scale", 0); //Get icon ID                intIcon_small = Intent.getintextra ("Icon-small", 0); //Charging method: BatteryManager.BATTERY_PLUGGED_AC:AC charge. BatteryManager.BATTERY_PLUGGED_USB:USB charging.                 intplugged = Intent.getintextra ("Plugged", 0); //get the battery voltage                intVoltage = Intent.getintextra ("voltage", 0); //get the battery temperature, 0.1 degrees units. For example, when you say 197, it means 19.7 degrees.                intTemperature = Intent.getintextra ("Temperature", 0); //get the type of batteryString technology = Intent.getstringextra ("Technology"); //Get battery StatusString statusstring = ""; //get the status string based on the status ID                Switch(status) { CaseBatteryManager.BATTERY_STATUS_UNKNOWN:statusString= "Unknown";  Break;  CaseBatteryManager.BATTERY_STATUS_CHARGING:statusString= "Charging";  Break;  CaseBatteryManager.BATTERY_STATUS_DISCHARGING:statusString= "discharging";  Break;  CaseBatteryManager.BATTERY_STATUS_NOT_CHARGING:statusString= "Not Charging";  Break;  CaseBatteryManager.BATTERY_STATUS_FULL:statusString= "Full";  Break; }                //get the battery life statusString healthstring = ""; //get battery life based on the status ID                Switch(health) { CaseBatteryManager.BATTERY_HEALTH_UNKNOWN:healthString= "Unknown";  Break;  CaseBatteryManager.BATTERY_HEALTH_GOOD:healthString= "good";  Break;  CaseBatteryManager.BATTERY_HEALTH_OVERHEAT:healthString= "Overheat";  Break;  CaseBatteryManager.BATTERY_HEALTH_DEAD:healthString= "Dead";  Break;  CaseBatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:healthString= "Voltage";  Break;  CaseBatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:healthString= "Unspecified Failure";  Break; }                //Get charging ModeString acstring = ""; //get charging mode based on charge status ID                Switch(plugged) { CaseBatteryManager.BATTERY_PLUGGED_AC:acString= "Plugged AC";  Break;  CaseBatteryManager.BATTERY_PLUGGED_USB:acString= "Plugged USB";  Break; }                //Display battery InformationTvbattery.settext ("Battery Status:" +statusstring+ "\ n Health Value:" +healthstring+ "\ n Battery remaining capacity:" + Level+ "\ nthe maximum battery value:" + Scale+ "\ n Small icon:" +Icon_small+ "\ n Charging method:" +plugged+ "\ n Charging method:" +acstring+ "\ n Battery Voltage:" +Voltage+ "\ n Battery Temperature:" + (float) temperature * 0.1 + "\ n Battery Type:" +technology);    }        }    }; @Overrideprotected voidOnPause () {Super. OnPause (); //Unlock Registration MonitoringUnregisterreceiver (Mbroadcastreceiver); }}

Android Get battery status