Android Display phone charge

Package Com.basillee.asus.demo;import Android.app.notification;import Android.content.broadcastreceiver;import Android.content.context;import Android.content.intent;import Android.content.intentfilter;import Android.os.batterymanager;import Android.support.v7.app.actionbaractivity;import Android.os.Bundle;import Android.view.menu;import Android.view.menuitem;import Android.view.view;import Android.widget.Button;import    Android.widget.textview;public class MainActivity11 extends Actionbaractivity {private TextView textviewlevel=null;    private int batterylevel;    private int batteryscale;    Private Button buttonbatteryshow; Private Broadcastreceiver broadcastreceiver=new Broadcastreceiver () {@Override public void onreceive (Contex T context, Intent Intent) {//Gets the current charge, if no specific value is obtained, the default is 0 Batterylevel=intent.getintextra (BATTERYMANAGER.E            xtra_level,0); To get the maximum charge, if no specific value is obtained, the default is Batteryscale=intent.getintextra (Batterymanager.extra_SCALE,100);        Displays the Power Textviewlevel.settext ("Charge" + (Batterylevel*100/batteryscale) + "%");    }    };        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.LAYOUT.ACTIVITY_MAIN_ACTIVITY11);        Textviewlevel= (TextView) Findviewbyid (r.id.textviewbattery);        buttonbatteryshow= (Button) Findviewbyid (r.id.button_show_battery);  Buttonbatteryshow.setonclicklistener (New View.onclicklistener () {@Override public void OnClick (View                V) {intentfilter intentfilter=new intentfilter (intent.action_battery_changed);            Register the receiver to obtain the Power information Registerreceiver (Broadcastreceiver, Intentfilter);    }        }); }}

http://jingyan.baidu.com/season/48891

Android Display phone charge