Android Studio-将值插入数据库的问题

如何解决Android Studio-将值插入数据库的问题

我无法在我的数据库中插入值。我认为我声明微调器的值不正确，这是有问题的，因为注册效果很好。当我按下按钮“插入”时，应用程序崩溃。 脚本PHP很不错，因为我设置了固定值，并且已经添加了这些值。 BackgroundWorker.java代码：

String insert_url = "http://10.0.2.2/wspol_adm.php";
 if(type.equals("insert")){

        try {
            String czy_dane = params[1];
            String umowa = params[2];
            String nazwa = params[3];
            String kategorie = params[4];
            String opis = params[5];
            String transfer = params[6];
            String zabezpieczenia = params[7];
            String dane = params[8];

            URL url = new URL (insert_url);
            HttpURLConnection httpURLConnection=(HttpURLConnection)url.openConnection();
            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setDoInput(true);
            OutputStream outputStream = httpURLConnection.getOutputStream();
            BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream,"UTF-8"));
            String post_data = URLEncoder.encode("czy_dane","UTF-8")+"="+URLEncoder.encode(czy_dane,"UTF-8")+"&"+
                    URLEncoder.encode("umowa","UTF-8")+"="+URLEncoder.encode(umowa,"UTF-8")+"&"
            +URLEncoder.encode("nazwa","UTF-8")+"="+URLEncoder.encode(nazwa,"UTF-8")+"&"
            +URLEncoder.encode("kategorie","UTF-8")+"="+URLEncoder.encode(kategorie,"UTF-8")+"&"
            +URLEncoder.encode("opis","UTF-8")+"="+URLEncoder.encode(opis,"UTF-8")+"&"
            +URLEncoder.encode("transfer","UTF-8")+"="+URLEncoder.encode(transfer,"UTF-8")+"&"
            +URLEncoder.encode("zabezpieczenia","UTF-8")+"="+URLEncoder.encode(zabezpieczenia,"UTF-8")+"&"
                    +URLEncoder.encode("dane","UTF-8")+"="+URLEncoder.encode(dane,"UTF-8");
            bufferedWriter.write(post_data);
            bufferedWriter.flush();
            bufferedWriter.close();
            outputStream.close();
            InputStream inputStream = httpURLConnection.getInputStream();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1")) ;
            String result="";
            String line="";
            while((line = bufferedReader.readLine())!=null) {
                result+= line;
            }
            bufferedReader.close();
            inputStream.close();
            httpURLConnection.disconnect();
            return result;
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }
    return null;
}

@Override
protected void onPreExecute() {
    alertDialog = new AlertDialog.Builder(context).create();
    alertDialog.setTitle("Login status");


}

@Override
protected void onPostExecute(String result) {
    alertDialog.setMessage(result);
    alertDialog.show();

}

@Override
protected void onProgressUpdate(Void... values) {
    super.onProgressUpdate(values);
}

}

带有微调器菜单代码的SecondPanel：

public class SecondPan extends AppCompatActivity implements AdapterView.OnItemClickListener {
private Spinner sspnOption6,sspn2;
private TextView ttxOption6,ttx;
EditText umowa,nazwa,kategorie,opis,zabezpieczenia,dane;
String czy_dane,transfer;



@SuppressLint("CutPasteId")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second_pan);

    Spinner sspn2 ;

    Spinner sspnOption6 ;

    umowa = (EditText) findViewById(R.id.scnd_txt1);
    nazwa = (EditText) findViewById(R.id.scnd_txt2);
    kategorie = (EditText) findViewById(R.id.scnd_txt3);
    opis = (EditText) findViewById(R.id.scnd_tx4);
    zabezpieczenia = (EditText) findViewById(R.id.scnd_tx6);
    dane = (EditText) findViewById(R.id.scnd_tx7);


    sspnOption6 = findViewById(R.id.sspn);
    ArrayAdapter<CharSequence> FirstAdapter = ArrayAdapter.createFromResource(this,R.array.tab1,android.R.layout.simple_spinner_item);
    FirstAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    sspnOption6.setAdapter(FirstAdapter);


    sspn2=findViewById(R.id.sspn2);
    ArrayAdapter<CharSequence> Secondadapter = ArrayAdapter.createFromResource(this,R.array.transfer,android.R.layout.simple_spinner_item);
    Secondadapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    sspn2.setAdapter(Secondadapter);


    czy_dane = sspn2.getSelectedItem().toString();
    transfer = sspnOption6.getSelectedItem().toString();


}
public void onItemClick(AdapterView<?> parent,View view,int position,long l) {
    String text = parent.getItemAtPosition(position).toString();
    Toast.makeText(parent.getContext(),text,Toast.LENGTH_SHORT).show();

}

public void OnInsert(View view ) {
    String str_czy_dane = sspn2.getSelectedItem().toString();
    String str_umowa = umowa.getText().toString();
    String str_nazwa = nazwa.getText().toString();
    String str_kategorie = kategorie.getText().toString();
    String str_opis = opis.getText().toString();
    String str_transfer  = sspnOption6.getSelectedItem().toString();
    String str_zabezpieczenia = zabezpieczenia.getText().toString();
    String str_dane = dane.getText().toString();
    String type = "insert";
    BackgroundWorker backgroundWorker = new BackgroundWorker(this);
    backgroundWorker.execute(type,str_czy_dane,str_umowa,str_nazwa,str_kategorie,str_opis,str_transfer,str_zabezpieczenia,str_dane);
}

}

Activity_SecondPanel-这是声明的按钮。

<Button
    android:id="@+id/btn_insert"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="524dp"
    android:text="@string/txt7"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.455"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    android:onClick="OnInsert"/>

我真的不知道出什么问题了，非常感谢您的帮助。预先感谢。