将对象数据从Service放入Activity

Question

我正在尝试使用Intent Service来解析mysql中的数据并将其置于主要活动中。

MyTestService.java

public class MyTestService extends IntentService {

public MyTestService() {
    super("MyTestService");
    // TODO Auto-generated constructor stub
}

@Override
protected void onHandleIntent(Intent intent) {
    Parameter result = downloadData();
    Log.d("msg", result.toString());
    Intent in = new Intent();
    in.setAction(Receiver.ACTION_RESP);
    in.addCategory(Intent.CATEGORY_DEFAULT);
    in.putExtra("123", (Parcelable) result);
    sendBroadcast(in);

}

private Parameter downloadData() {
    Parameter parameter = new Parameter();
    String data = (new LandSlideHttpClient()).getDeviceData();
    try {
        parameter = JSONLandslideParser.getParameter(data);
    } catch (Exception e) {

    }
    return parameter;
}

}

MainActivity.java

public class MainActivity extends ActionBarActivity {
private Receiver receiver;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    IntentFilter filter = new IntentFilter(Receiver.ACTION_RESP);
    filter.addCategory(Intent.CATEGORY_DEFAULT);
    receiver = new Receiver();
    registerReceiver(receiver, filter);
    Intent intent = new Intent(this, MyTestService.class);
    startService(intent);
}

@Override
protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
    unregisterReceiver(receiver);
}
 public class Receiver extends BroadcastReceiver {

    public static final String ACTION_RESP = "abcdef";

    @Override
    public void onReceive(Context context, Intent intent) {
        Parameter result = (Parameter) intent.getParcelableExtra("123");
        TextView textView = (TextView) findViewById(R.id.textview);
        textView.setText(result.id.getID());
    }

}
}

当我运行我的代码时，Logcat是

04-22 04:14:32.512: E/AndroidRuntime(4472): java.lang.RuntimeException: Error receiving broadcast Intent { act=abcdef cat=[android.intent.category.DEFAULT] flg=0x10 (has extras) } in com.example.testservice.MainActivity$Receiver@416fd1c0

>04-22 04:14:32.512: E/AndroidRuntime(4472):    at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:773
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Handler.handleCallback(Handler.java:730)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Handler.dispatchMessage(Handler.java:92)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Looper.loop(Looper.java:137)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.app.ActivityThread.main(ActivityThread.java:5103)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at java.lang.reflect.Method.invokeNative(Native Method)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at java.lang.reflect.Method.invoke(Method.java:525)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at dalvik.system.NativeStart.main(Native Method)
04-22 04:14:32.512: E/AndroidRuntime(4472): Caused by: android.os.BadParcelableException: Parcelable protocol requires a Parcelable.Creator object called  CREATOR on class com.example.testservice.Parameter
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Parcel.readParcelableCreator(Parcel.java:2114)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Parcel.readParcelable(Parcel.java:2055)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Parcel.readValue(Parcel.java:1971)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Parcel.readMapInternal(Parcel.java:2255)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Bundle.unparcel(Bundle.java:223)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.os.Bundle.getParcelable(Bundle.java:1170)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.content.Intent.getParcelableExtra(Intent.java:4501)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at com.example.testservice.MainActivity$Receiver.onReceive(MainActivity.java:59)
04-22 04:14:32.512: E/AndroidRuntime(4472):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:763)
04-22 04:14:32.512: E/AndroidRuntime(4472):     ... 9 more

Parameter.java

public class Parameter implements Parcelable{

    public class currentData {
        private float temp;
        private float acc;
        private float moisture;
        private float battery;
        private String date;
        private String time;

        public float getTemp() {
            return temp;
        }

        public void setTemp(float temp) {
            this.temp = temp;
        }

        public float getAcc() {
            return acc;
        }

        public void setAcc(float acc) {
            this.acc = acc;
        }

        public float getMoisture() {
            return moisture;
        }

        public void setMoisture(float moisture) {
            this.moisture = moisture;
        }

        public float getBattery() {
            return battery;
        }

        public void setBattery(float battery) {
            this.battery = battery;
        }

        public String getTime() {
            return time;
        }

        public void setTime(String time) {
            this.time = time;
        }

        public String getDate() {
            return date;
        }

        public void setDate(String date) {
            this.date = date;
        }

    }

    public class ID {
        private String ID;

        public String getID() {
            return ID;
        }

        public void setID(String iD) {
            ID = iD;
        }
    }

    public ID id = new ID();
    public currentData currentData = new currentData();

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

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

    }
 }