设置GPS是否可用

设置GPS是否为可找开状态，未打开

 private void toggleGPS() {
		Intent gpsIntent = new Intent();
		gpsIntent.setClassName("com.android.settings",
				"com.android.settings.widget.SettingsAppWidgetProvider");
		gpsIntent.addCategory("android.intent.category.ALTERNATIVE");
		gpsIntent.setData(Uri.parse("custom:3"));
		try {
			PendingIntent.getBroadcast(this, 0, gpsIntent, 0).send();
		}
		catch (CanceledException e) {
			e.printStackTrace();
		}
	}