所以我面临的问题是我有一个listView包含开关和一些附加数据的JSON. 我需要能够发送开关的位置（开或关）和json设备ID 的一部分，然后将它们发送到数据库。由于我是这种事情的新手，我不知道该怎么做，甚至不知道在哪里做。
任何帮助将不胜感激，
这是我的前端
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp"
android:gravity="center_vertical|center_horizontal">
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:id="@+id/device_type"
android:src="@mipmap/ic_launcher"
android:layout_gravity="center_vertical" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.77">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="device_name"
android:id="@+id/device_name" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="deviceID"
android:id="@+id/device_id"
android:layout_weight="1" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="type"
android:id="@+id/type"
android:layout_weight="1" />
</LinearLayout>
<Switch
android:layout_width="wrap_content"
android:layout_height="40dp"
android:text="New Switch"
android:id="@+id/switch1"
android:layout_gravity="center_vertical" />
</LinearLayout>
这是我的每个列表项的人口，
package mmu.tom.linkedviewproject;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.Switch;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Created by Tom on 08/02/2016.
*/
public class GetAllDeviceListViewAdapter extends BaseAdapter {
private JSONArray dataArray;
private Activity activity;
private String state;
private static LayoutInflater inflater = null;
public GetAllDeviceListViewAdapter(JSONArray jsonArray, Activity a){
this.dataArray = jsonArray;
this.activity = a;
inflater = (LayoutInflater) this.activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return this.dataArray.length();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// set up the convert view if it's null
ListCell cell;
if(convertView == null){
convertView = inflater.inflate(R.layout.get_all_devices_list_view_cell,null);
cell = new ListCell();
cell.deviceName = (TextView) convertView.findViewById(R.id.device_name);
cell.deviceId = (TextView) convertView.findViewById(R.id.device_id);
cell.type = (TextView) convertView.findViewById(R.id.type);
cell.aSwitch = (Switch) convertView.findViewById(R.id.switch1);
cell.typeImg = (ImageView) convertView.findViewById(R.id.device_type);
convertView.setTag(cell);
}
else{
cell=(ListCell) convertView.getTag();
}
// changes the cell data here
try{
JSONObject jsonObject = this.dataArray.getJSONObject(position);
cell.deviceName.setText(jsonObject.getString("name"));
cell.deviceId.setText(" " + jsonObject.getString("deviceID"));
cell.type.setText(" " + jsonObject.getString("type"));
String device = jsonObject.getString("type");
if(device.equals("Light")){
cell.typeImg.setImageResource(R.mipmap.ic_lights_on);
}
else if(device.equals("Lock")){
cell.typeImg.setImageResource(R.mipmap.ic_lock_open_black_24dp);
}
// remember to set the image to type in future
}
catch(JSONException e){
e.printStackTrace();
}
return convertView;
}
private class ListCell{
private TextView deviceName;
private TextView deviceId;
private TextView type;
private ImageView typeImg;
private Switch aSwitch;
// remember to set the image to type in future
}
}
显示列表的类
package mmu.tom.linkedviewproject;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ListView;
import org.json.JSONArray;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "ShowDevice";
private ListView GetAllDevicesListView;
private JSONArray jsonArray;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.i(TAG, " OPened this");
ImageButton button1 = (ImageButton) findViewById(R.id.image_button_new);
button1.setOnClickListener(new View.OnClickListener() {
Class ourClass;
public void onClick(View v) {
Intent i;
i = new Intent(MainActivity.this, DeviceDetailsActivity.class);
startActivity(i);
}
});
this.GetAllDevicesListView = (ListView) this.findViewById(R.id.GetAllDevicesListView);
new GetAllDevicesTask().execute(new ApiConnector());
}
public void setListAdapter(JSONArray jsonArray){
this.jsonArray = jsonArray;
this.GetAllDevicesListView.setAdapter((new GetAllDeviceListViewAdapter(jsonArray, this)));
}
private class GetAllDevicesTask extends AsyncTask<ApiConnector,Long,JSONArray>
{
@Override
protected JSONArray doInBackground(ApiConnector... params) {
// it is executed on Background thread
return params[0].GetAllDevicesState();
}
@Override
protected void onPostExecute(JSONArray jsonArray) {
setListAdapter(jsonArray);
}
}
}
最后这是我的数据库连接
package mmu.tom.linkedviewproject;
import android.util.Log;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import java.io.IOException;
public class ApiConnector {
public JSONArray GetAllDevicesState() {
// URL for getting all customers
String url = "http://52.88.194.67:8080/IOTProjectServer/getDevice";
// Get HttpResponse Object from url.
// Get HttpEntity from Http Response Object
HttpEntity httpEntity = null;
try {
DefaultHttpClient httpClient = new DefaultHttpClient(); // Default HttpClient
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
httpEntity = httpResponse.getEntity();
} catch (ClientProtocolException e) {
// Signals error in http protocol
e.printStackTrace();
//Log Errors Here
} catch (IOException e) {
e.printStackTrace();
}
// Convert HttpEntity into JSON Array
JSONArray jsonArray = null;
if (httpEntity != null) {
try {
String entityResponse = EntityUtils.toString(httpEntity);
Log.e("Entity Response : ", entityResponse);
jsonArray = new JSONArray(entityResponse);
} catch (JSONException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return jsonArray;
}
public JSONArray GetDeviceDetails(int DeviceID) {
// URL for getting all customers
String url = "http://52.88.194.67:8080/IOTProjectServer/registerDevice?";
// Get HttpResponse Object from url.
// Get HttpEntity from Http Response Object
HttpEntity httpEntity = null;
try {
DefaultHttpClient httpClient = new DefaultHttpClient(); // Default HttpClient
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
httpEntity = httpResponse.getEntity();
} catch (ClientProtocolException e) {
// Signals error in http protocol
e.printStackTrace();
//Log Errors Here
} catch (IOException e) {
e.printStackTrace();
}
// Convert HttpEntity into JSON Array
JSONArray jsonArray = null;
if (httpEntity != null) {
try {
String entityResponse = EntityUtils.toString(httpEntity);
Log.e("Entity Response : ", entityResponse);
jsonArray = new JSONArray(entityResponse);
} catch (JSONException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return jsonArray;
}
}