将 JSON 解析为 Parcelable 对象以将 Parcelable 对象发送到 Android 中的另一个 Activity

Question

我想传递来自 POST 请求的 JSON 数据响应 API。我创建了实现 Parcelable class 的 Sharing class。我想利用 parcelable class 来保存几个对象（客户端信息）JSON 主要 activity 响应并将它们发送到第二个 activity 只显示客户端 information.Here 是我各自的代码，这是 api 响应..{ "success": "true", "message": "Logged in successfuly", "user": { "id": 13, "userNo": "", "name": "Adam", "username": "Adam@gmail.com", "actualPassword": "12345", "email": "apollo@client.com", "secondaryEmail": null, "primaryPhone": 9876544345, "secondaryPhone": null, "clientId": { "clientId": 1, "name": "Charlie", "address": "India", "createdBy": null, "createdAt": "2018-10-25T11:25:19.000Z", "updatedAt": "2019-01-21T10:10:39.000Z", "is_active": 1, "clientCode": "APL", "startTime": "08:00:00.000000", "endTime": "07:59:59.000000", }, "gender": null, "dob": null, "emergencyMobile": null, "officeNo": null, "loggedInStatus": 0, } }

这是我的主要内容Activity..

public class MainActivity extends AppCompatActivity {


public  static String myUrl="IP Address URL Link";
TextView tvIsConnected;
EditText etEmail;
EditText etPassword;
TextView tvResult;
Button btn_Send;
String name="";

TextView client_ID;
TextView client_Name;
@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    etEmail = findViewById(R.id.etEmail);
    etPassword = findViewById(R.id.etPassword);
    tvResult = (TextView) findViewById(R.id.tvResult);

    btn_Send =(Button)findViewById(R.id.btnSend);


    final HTTPAsyncTask process = new HTTPAsyncTask();
    btn_Send.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            process.execute();
        }
    });


}


@SuppressLint("ParcelCreator")
public  class HTTPAsyncTask extends AsyncTask<String, Void, String> implements Parcelable {
    JSONObject jsonObject = new JSONObject();
    Intent i = new Intent(MainActivity.this, DashboardActivity.class);

    @Override
    protected String doInBackground(String... urls) {

        StringBuffer output = new StringBuffer();
        try {
            try {

                URL url = new URL(myUrl);

                jsonObject.put("userName", etEmail.getText().toString());
                jsonObject.put("password", etPassword.getText().toString());



                HttpURLConnection conn = (HttpURLConnection) url.openConnection();

                conn.setReadTimeout(15000 );
                conn.setConnectTimeout(15000 );
                conn.setRequestMethod("POST");
                conn.setDoInput(true);
                conn.setDoOutput(true);
                conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");



                OutputStream os = conn.getOutputStream();

                os.write(jsonObject.toString().getBytes());
                os.flush();
                BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
                String temp;
                while ((temp = br.readLine()) != null) {
                    output.append(temp);
                }
                conn.disconnect();

            } catch (JSONException e) {
                e.printStackTrace();
                return "Error";
            }
        }
        catch (IOException e) {
            return "Error while retrieving screen";
        }
        catch (Exception e) {
            e.printStackTrace();
        }

        return output.toString();
}



    @Override
    public void onPostExecute(String result ) {



        i.putExtra("key",result);

        startActivity(i);



    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {

    }
}


}

以下是我的分享class实现了ParcelableClass..

public class SharingClass implements Parcelable {

private int ClientId ;
private String ClientName;
private String ClientAddress;

public SharingClass(){
    super();
}

public SharingClass(Parcel parcel){
    this.ClientId = parcel.readInt();
    this.ClientName = parcel.readString();
    this.ClientAddress = parcel.readString();
}

public SharingClass(Parcelable sharedObject) {
}

@Override
public int describeContents() {
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeInt(ClientId);
    dest.writeString(ClientName);
    dest.writeString(ClientAddress);
}

public static final Creator<SharingClass> CREATOR = new Creator<SharingClass>() {
    @Override
    public SharingClass createFromParcel(Parcel parcel) {
        return new SharingClass(parcel);
    }

    @Override
    public SharingClass[] newArray(int i) {
        return new SharingClass[i];
    }
};

public void setClientId(int ClientId) {
    this.ClientId = ClientId;
}

public void setClientName(String ClientName) {
    this.ClientName = ClientName;
}

public void setClientAddress(String ClientAddress) {
    this.ClientAddress = ClientAddress;
}

public int getClientId() {
    return ClientId;
}

public String getClientName() {
    return ClientName;
}

public String getClientAddress() {
    return ClientAddress;
}


}

请给我一个访问 JSON 数据的解决方案，以在第二个 activity 中显示客户端信息，并显示解析，因为我是 Android[=16= 的新手]

Answer 1

既然你的对象实现了 Parcelable，那么只需使用 putExtra() 将它们放入你的 Intents 中即可：

Intent i = new Intent();
i.putExtra("name_of_extra", myParcelableObject);

然后你可以用getParcelableExtra():

把它们拉出来

Intent i = getIntent();
SharingClass sharingClass = (SharingClass) i.getParcelableExtra("name_of_extra");

如果您必须访问 POJO 中的数据，您可以使用 getter 方法获取，例如，在您的情况下。如果您必须访问 ClientId，那么您可以通过以下方式完成。

int clientId = sharingClass.getClientId();

希望这对您有所帮助。

将 JSON 解析为 Parcelable 对象以将 Parcelable 对象发送到 Android 中的另一个 Activity

Parsing JSON to Parcelable objects to send Parcelable object to another Activity in Android

java

android

json

android-intent

android-json