Android Open Source - 2014-Droid-code Add Student

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License

The source code is released under:

GNU General Public License

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Java Source Code

package cs534.sample.dbAsyncTask;
//from   ww  w. j ava2  s.com
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/* 
 * AddStudent.class
 * 
 * This Activity is a UI used simply to add records to the db
 *
 * It uses a DBHelper class for the sqlite database
 */
public class AddStudent extends Activity implements OnClickListener {
  private  Context context;
  private DBHelper dbh;
  TextView status;
    public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_add);
      context = getApplicationContext();
      Button btn_submit = (Button)findViewById(R.id.btn_submit);
      btn_submit.setOnClickListener(this);
      status = (TextView)findViewById(R.id.tv_status);
    }

  public void onClick(View v) {
    dbh = DBHelper.getDBHelper(this);
    // get the data from the UI
    String firstName = ((EditText)findViewById(R.id.et_name)).getText().toString();
    String lastName = ((EditText)findViewById(R.id.et_lastName)).getText().toString();
    String className = ((EditText)findViewById(R.id.et_class)).getText().toString();
    String grade = ((EditText)findViewById(R.id.et_grade)).getText().toString();
    
    // add the data to the db
    InsertDataTask indata = new InsertDataTask();
    indata.execute(firstName, lastName, className, grade);    
  } //onClick()
  
  private class InsertDataTask extends AsyncTask<String, Void, Long>  {
    private final ProgressDialog dialog = new ProgressDialog(AddStudent.this);

    protected void onPreExecute() {
      this.dialog.setMessage("Inserting data...");
      this.dialog.show();
    }

    protected Long doInBackground(String... args) {
      return  dbh.insertNewStudent(args[0], args[1],args[2],Integer.parseInt(args[3]));
      // insertNewStudent(firstName, lastName, className, grade);;
    }

    protected void onPostExecute(Long retcode) {
      if (dialog.isShowing()) {
        dialog.dismiss();
      }
      if (retcode != -1) {
        Toast.makeText(context, R.string.insert_ok, Toast.LENGTH_LONG).show();
        status.setText(R.string.insert_ok);
      } else 
        status.setText(R.string.insert_fail);
    }
  } // InsertDataTask class (AsyncTask)
}  // Activity class

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