在下一个 android 活动中显示最近插入 MySQL 数据库的记录以进行编辑

Question

下面是从 android 活动将数据插入 MySQL 数据库的代码。现在，我想在下一个活动的编辑文本和微调器字段中显示最近插入的数据。我迫切需要一个解决方案，如果您不清楚我的问题，请提出问题。我使用 stackoverflow 作为我最后的手段。

insertbtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {


            getDatafromForm();
            SendDataToServer(opened,closed,site,tech,own,status,category,affected_kpis,bsc,grid,cells,priority,ana,recom,alarm,receiver,carboncopy);
        }
    });
}

public void getDatafromForm(){
    opened=date_opened.getText().toString();
    closed=date_closed.getText().toString();
    site=sit.getText().toString();
    tech=tech_spinner.getSelectedItem().toString();
    own=owner.getSelectedItem().toString();
    status=status_spinner.getSelectedItem().toString();
    category=category_spinner.getSelectedItem().toString();
    affected_kpis=kpis.getText().toString();
    bsc=rnc.getText().toString();
    grid=grid_spinner.getSelectedItem().toString();
    cells=affected_cells.getText().toString();
    priority=priority_spinner.getSelectedItem().toString();
    ana=analysis.getText().toString();
    recom=recommendations.getText().toString();
    alarm=alarms.getText().toString();
    receiver=to.getText().toString();
    carboncopy=cc.getText().toString();
}

public void SendDataToServer(final String dateopened,final String dateclosed,final String site,final String tech,
                             final String own,
                             final String status,final String category, final String affected_kpis,final String bsc,
                             final String grid,final String cells,final String priority,
                             final String ana,final String recom,final String alarm,final String receiver,
                             final String carboncopy ){
    class SendPostReqAsyncTask extends AsyncTask<Object, Object, String> {

        @Override
        protected String doInBackground(Object... params) {
            String quickdo=dateopened;
            String quickdc=dateclosed;
            String quicksite=site;
            String quicktech=tech;
            String quickowner=own;
            String quickstatus=status;
            String quickcategory=category;
            String quickaffected_kpis=affected_kpis;
            String quickbsc=bsc;
            String quickgrid=grid;
            String quickcells=cells;
            String quickpriority=priority;
            String quickanalysis=ana;
            String quickrecom=recom;
            String quickalarm=alarm;
            String quickreceiver=receiver;
            String quickcarboncopy=carboncopy;

            List<NameValuePair> nameValuePairs=new ArrayList<NameValuePair>();
            nameValuePairs.add(new BasicNameValuePair("date_opened",quickdo));
            nameValuePairs.add(new BasicNameValuePair("date_closed",quickdc));
            nameValuePairs.add(new BasicNameValuePair("site",quicksite));
            nameValuePairs.add(new BasicNameValuePair("technology",quicktech));
            nameValuePairs.add(new BasicNameValuePair("owner",quickowner));
            nameValuePairs.add(new BasicNameValuePair("status",quickstatus));
            nameValuePairs.add(new BasicNameValuePair("category",quickcategory));
            nameValuePairs.add(new BasicNameValuePair("affected_kpis",quickaffected_kpis));
            nameValuePairs.add(new BasicNameValuePair("bsc_rnc",quickbsc));
            nameValuePairs.add(new BasicNameValuePair("grid",quickgrid));
            nameValuePairs.add(new BasicNameValuePair("affected_cells",quickcells));
            nameValuePairs.add(new BasicNameValuePair("priority",quickpriority));
            nameValuePairs.add(new BasicNameValuePair("analysis",quickanalysis));
            nameValuePairs.add(new BasicNameValuePair("recommendations",quickrecom));
            nameValuePairs.add(new BasicNameValuePair("alarm",quickalarm));
            nameValuePairs.add(new BasicNameValuePair("receiver",quickreceiver));
            nameValuePairs.add(new BasicNameValuePair("carboncopy",quickcarboncopy));



            HttpClient httpClient=new DefaultHttpClient();
            HttpPost httpPost=new HttpPost(insert_url);
            try {
                httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                HttpResponse httpResponse=httpClient.execute(httpPost);
                HttpEntity entity=httpResponse.getEntity();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
              catch (IOException e) {
                e.printStackTrace();
            }
           // JSONObject myobject=myparser.getJSONFromUrl(insert_url);
            return "Successfull";
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            Toast.makeText(createRecord.this,"Data successfully submitted",Toast.LENGTH_LONG).show();
            //pass json object result with the intent here
           /* Intent i=new Intent(createRecord.this,EditActivity.class);
            i.putExtra("data",result.toString());
            startActivity(i); */
        }
    }
    SendPostReqAsyncTask sendPostReqAsyncTask = new SendPostReqAsyncTask();
    sendPostReqAsyncTask.execute(dateopened,dateclosed,site,tech,own,status,category,affected_kpis,bsc,grid,cells,priority,
            ana,recom,alarm,receiver,carboncopy );


}

我的php脚本是：

   <?php
include "connect.php";

//extract($_POST);


$date_opened=$_POST['date_opened'];
$date_closed=$_POST['date_closed'];
$site=$_POST['site'];
$technology=$_POST['technology'];
$owner=$_POST['owner'];
$status=$_POST['status'];
$category=$_POST['category'];
$affected_kpis=$_POST['affected_kpis'];
$bsc_rnc=$_POST['bsc_rnc'];
$grid=$_POST['grid'];
$affected_cells=$_POST['affected_cells'];
$priority=$_POST['priority'];
$analysis=$_POST['analysis'];
$recommendations=$_POST['recommendations'];
$alarms=$_POST['alarm'];
$receiver=$_POST['receiver'];
$carboncopy=$_POST['carboncopy'];
$age;

$rec="SELECT COUNT(grid) as total from data where grid='$grid'";

$result = mysqli_query($conn,$rec);
$row = mysqli_fetch_array($result);

$total = $row['total'];


if(strtotime($date_closed)=='0'){
    $age=0;
}
else{
$difference=strtotime($date_closed) - strtotime($date_opened);
$age= floor($difference/(60 * 60* 24));
}



$sql = "INSERT into data set 
        date_opened = '$date_opened',
        date_closed = '$date_closed',
        aging='$age',
        site = '$site',
        technology='$technology',
        owner = '$owner',
        status = '$status',
        category = '$category',
        affected_kpis = '$affected_kpis',
        bsc_rnc = '$bsc_rnc',
        grid = '$grid',
        recurrence='$total',
        affected_cells = '$affected_cells',
        priority = '$priority',
        analysis = '$analysis',
        recommendations = '$recommendations',
        alarm = '$alarms',
        receiver='$receiver',
        carboncopy='$carboncopy'

";


if ($conn->query($sql) === TRUE) {
    $last_id = $conn->insert_id;
    $json= array('id'=>$last_id,'date_opened'=>$date_opened,'date_closed'=>$date_closed,'aging'=>$age,'site'=>$site,
                'technology'=>$technology,'owner'=>$owner,'status'=>$status,'category'=>$category,
                 'affected_kpis'=>$affected_kpis,'bsc_rnc'=>$bsc_rnc,'grid'=>$grid,'recurrence'=>$total,
                'affected_cells'=>$affected_cells,'priority'=>$priority,'analysis'=>$analysis,
                 'recommendations'=>$recommendations,'alarm'=>$alarms,'receiver'=>$receiver,'carboncopy'=>$carboncopy);

    //echo 'Data Inserted Successfully';
    echo json_encode($json);
}
else {
    echo "Try Again " . $sql . "<br>" . $conn->error;
}


?>

Answer 1

您可以创建自定义 pojo 类并为其设置最近的插入数据。然后将 pojo 类传递给下一个活动。

喜欢，创建 pojo 类并设置所有值。

public class Test implements Serializable {
String opened, closed;

public Test(String opened, String closed) {
    this.opened = opened;
    this.closed = closed;
}

public String getOpened() {
    return opened;
}

public void setOpened(String opened) {
    this.opened = opened;
}

public String getClosed() {
    return closed;
}

public void setClosed(String closed) {
    this.closed = closed;
}

}

Test test = new Test(date_opened.getText().toString(), 
date_closed.getText().toString());

Intent intent = new Intent(createRecord.this,EditActivity.class);
intent.putExtra("data",test);
startActivity(intent); 

你可以得到类似的数据，

 Test test = (Test) getIntent().getSerializableExtra("data");
 test.getClosed() // for get closed value
 etc..

首先，您必须从 api 获取作为字符串的响应，然后才能转换为 JSON 对象。 你可以得到这样的回应。

 static String json = "";
 static InputStream is = null;

 DefaultHttpClient httpClient = new DefaultHttpClient();
 HttpPost httpPost = new HttpPost(url);
 httpPost.setEntity(new UrlEncodedFormEntity(params));

 HttpResponse httpResponse = httpClient.execute(httpPost);
 HttpEntity httpEntity = httpResponse.getEntity();
 is = httpEntity.getContent();
try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

现在，您可以将响应转换为 JSON 对象，或者您也可以通过 GSON 库进行。

Answer 2

 class CreateNewData extends AsyncTask<Object, Object, JSONObject> {
    String opened=date_opened.getText().toString();
    String closed=date_closed.getText().toString();
    String site=sit.getText().toString();
    String tech=tech_spinner.getSelectedItem().toString();
    String own=owner.getSelectedItem().toString();
    String status=status_spinner.getSelectedItem().toString();
    String category=category_spinner.getSelectedItem().toString();
    String affected_kpis=kpis.getText().toString();
    String bsc=rnc.getText().toString();
    String grid=grid_spinner.getSelectedItem().toString();
    String cells=affected_cells.getText().toString();
    String priority=priority_spinner.getSelectedItem().toString();
    String ana=analysis.getText().toString();
    String recom=recommendations.getText().toString();
    String alarm=alarms.getText().toString();
    String receiver=to.getText().toString();
    String carboncopy=cc.getText().toString();

    @Override
    protected JSONObject doInBackground(Object... params) {

        List<NameValuePair> param=new ArrayList<NameValuePair>();
        param.add(new BasicNameValuePair("date_opened",opened));
        param.add(new BasicNameValuePair("date_closed",closed));
        param.add(new BasicNameValuePair("site",site));
        param.add(new BasicNameValuePair("technology",tech));
        param.add(new BasicNameValuePair("owner",own));
        param.add(new BasicNameValuePair("status",status));
        param.add(new BasicNameValuePair("category",category));
        param.add(new BasicNameValuePair("affected_kpis",affected_kpis));
        param.add(new BasicNameValuePair("bsc_rnc",bsc));
        param.add(new BasicNameValuePair("grid",grid));
        param.add(new BasicNameValuePair("affected_cells",cells));
        param.add(new BasicNameValuePair("priority",priority));
        param.add(new BasicNameValuePair("analysis",ana));
        param.add(new BasicNameValuePair("recommendations",recom));
        param.add(new BasicNameValuePair("alarm",alarm));
        param.add(new BasicNameValuePair("receiver",receiver));
        param.add(new BasicNameValuePair("carboncopy",carboncopy));

        JSONObject json=jsonParser.makeHttpRequest(insert_url,"POST",param);
        Log.d("Create Response", json.toString());





        return json;
    }

    @Override
    protected void onPostExecute(JSONObject json) {
        super.onPostExecute(json);
        try {
            int id=json.getInt("id");

            if(id==0){
                Toast.makeText(createRecord.this,json.getString("message"),Toast.LENGTH_LONG).show();
                //Toast.makeText(createRecord.this,"Data Not Inserted",Toast.LENGTH_LONG).show();

            }
            else{
                Toast.makeText(createRecord.this,json.getString("message"),Toast.LENGTH_LONG).show();
                Intent i=new Intent(createRecord.this,EditActivity.class);
                //passing data as json object to next activity
                i.putExtra("data",json.toString());
                startActivity(i);
                finish();
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}

而PHP代码会是这样的：

    if ($conn->query($sql) === TRUE) {
    $last_id = $conn->insert_id;
    $json['id']=$last_id;
    $json['date_opened']=$date_opened;
    $json['date_closed']=$date_closed;
    $json['site']=$site;
    $json['technology']=$technology;
    $json['owner']=$owner;
    $json['status']=$status;
    $json['category']=$category;
    $json['affected_kpis']=$affected_kpis;
    $json['bsc_rnc']=$bsc_rnc;
    $json['grid']=$grid;
    $json['affected_cells']=$affected_cells;
    $json['priority']=$priority;
    $json['analysis']=$analysis;
    $json['recommendations']=$recommendatons;
    $json['alarm']=$alarms;
    $json['receiver']=$receiver;
    $json['carboncopy']=$carboncopy;
    $json['message']="Data inserted successfully";
    echo json_encode($json);
    //echo 'Data Inserted Successfully';
    echo json_encode($json);
}

    else {
        $json['id']=0;
        $json['message']="Data not inserted";
        echo json_encode($json);}
    ?>