Question

我是android新手。我想用服务制作应用程序。该服务应持续检查当前的充电状态（已插入或未插入）。我想在连接充电器时执行一个事件（关闭wifi）。你能解决我的问题吗？

Answer 1

关于电池状态，您可以在下面找到示例：

您可以按需检查电池状态：

IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
Intent batteryStatus = context.registerReceiver(null, ifilter);


int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING ||
                 status == BatteryManager.BATTERY_STATUS_FULL;


int chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;`

或者使用BroadcastReceiver：

<receiver android:name=".PowerConnectionReceiver">
  <intent-filter>
    <action android:name="android.intent.action.ACTION_POWER_CONNECTED"/>
    <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/>
  </intent-filter>
</receiver>

守则：

public class PowerConnectionReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
    boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING ||
                        status == BatteryManager.BATTERY_STATUS_FULL;
    int chargePlug = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
    boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
    boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
}
}

为了转变WIFI程序化 -

您应该定义权限：

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

将其设置为开：

 WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
 wifi.setWifiEnabled(true);

将其设置为关闭：

 WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
 wifi.setWifiEnabled(false);

Answer 2

如果您拨打下面的功能，它可以显示设备是否正在充电。您可以使用它来执行所需的任务:(这适用于有线和无线充电）

public static boolean isPlugged(Context context) {
boolean isPlugged= false;
Intent intent = context.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
int plugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
isPlugged = plugged == BatteryManager.BATTERY_PLUGGED_AC || plugged == BatteryManager.BATTERY_PLUGGED_USB;
if (VERSION.SDK_INT > VERSION_CODES.JELLY_BEAN) {
    isPlugged = isPlugged || plugged == BatteryManager.BATTERY_PLUGGED_WIRELESS;
}
return isPlugged;
}

了解更多信息visit the Android Dev site here。

如何检测android中的当前充电状态

2 个答案: