android平台通过Native.js获取电池电量等信息

代码如下

//需要添加权限 <uses-permission android:name="android.permission.BATTERY_STATS" />  
function listen_Battery(){  
    try{  
        var main = plus.android.runtimeMainActivity(); //获取activity  
        var Intent = plus.android.importClass('android.content.Intent');  
        var receiver;   
        recevier = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver', {  
            onReceive: function(context, intent) { //实现onReceiver回调函数  
                try {  
                    var BatteryManager = plus.android.importClass('android.os.BatteryManager');  
                    var action = intent.getAction();  
                    if (action == Intent.ACTION_BATTERY_CHANGED) {  
                        var status = intent.getIntExtra("status", 0);  
                        var health = intent.getIntExtra("health", 0);  
                        var present = intent.getBooleanExtra("present", false);  
                        var level = intent.getIntExtra("level", 0);  
                        var scale = intent.getIntExtra("scale", 0);  
                        var icon_small = intent.getIntExtra("icon-small", 0);  
                        var plugged = intent.getIntExtra("plugged", 0);  
                        var voltage = intent.getIntExtra("voltage", 0);  
                        var temperature = intent.getIntExtra("temperature", 0);  
                        var technology = intent.getStringExtra("technology");  

                        var 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;  
                        }  
                        var 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;  
                        }  
                        var acString = "";  
                        switch (plugged) {  
                        case BatteryManager.BATTERY_PLUGGED_AC:  
                            acString = "plugged ac";  
                            break;  
                        case BatteryManager.BATTERY_PLUGGED_USB:  
                            acString = "plugged usb";  
                            break;  
                        }  
                        var s="";  
                        s = "status:"+statusString+"\n"  
                        +"health:"+healthString+"\n"  
                        +"present:"+present+"\n"  
                        +"level:"+level+"\n"  
                        +"scale:"+scale+"\n"  
                        +"icon_small:"+ icon_small+"\n"  
                        +"plugged:"+acString+"\n"  
                        +"voltage:"+voltage+"\n"  
                        +"temperature:"+temperature+"\n"  
                        +"technology:"+technology+"\n";  
                        alert(s);  
                        main.unregisterReceiver(receiver);  
                    }  
                } catch (e1) {  
                    console.log(e1);  
                }  
            }  
        });  
        var IntentFilter = plus.android.importClass('android.content.IntentFilter');  
        var filter = new IntentFilter();  
        filter.addAction(Intent.ACTION_BATTERY_CHANGED);  
        main.registerReceiver(receiver, filter); //注册监听  
    }catch(e){  
        console.log(e);  
    }  
}