对于MainActivity类型，方法getParcelableArrayList（String）未定义

Question

我想通过使用Parcelable接口将数据从我的BroadcastReceiverListener类中的onReceive()传递到MainActivity中的onNewIntent()方法。我怎么能让它工作？如何在onNewIntent()？

中获取数据

我感谢任何帮助。

BroadcastReceiverListener类：

public class BroadcastReceiverListener extends BroadcastReceiver implements
		Parcelable {

	@Override
	public void onReceive(Context context, Intent intent) {
		if (intent.getAction().equals(
				android.net.wifi.WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {

			WifiManager wifiManager = (WifiManager) context
					.getSystemService(Context.WIFI_SERVICE);
			final List<ScanResult> results = wifiManager.getScanResults();
			if (results != null) {
				ArrayList<ScanResult> updatedResults = new ArrayList<ScanResult>();
				for (int i = 0; i < results.size(); i++) {
					String ssid = results.get(i).SSID;
					if (ssid.startsWith("KD")) {
						updatedResults.add(results.get(i));
					}
				}

				Intent updateIntenet = new Intent(context, MainActivity.class);
				updateIntenet.putParcelableArrayListExtra("broadcast_event",
						updatedResults);
				context.startActivity(updateIntenet);

			}

		}

	}

	@Override
	public int describeContents() {
		// TODO Auto-generated method stub
		return 0;
	}

	@Override
	public void writeToParcel(Parcel dest, int flags) {
		// TODO Auto-generated method stub

	}

}

此方法位于MainActiity：

 @Override
	    protected void onNewIntent(Intent intent) {
	        String intentResult = intent.getStringExtra("broadcast_event");
	        if (intentResult != null) {
	            List<ScanResult> results = getParcelableArrayList(intentResult);
	            String a = deliverBestAccessPoint(results);
	            textWifi.setText(a.toString());
	        } else {
	            textWifi.setText("No route is available.");
	        }
	    }

Answer 1

你应该对你收到的意图调用getParcelableArrayListExtra：

List<ScanResult> results = intent.getParcelableArrayListExtra("broadcast_event");