SUPER Simple TimePicker Implementation – Force Closes on Line 74-Collection of common programming errors

11 years ago
admin
7 minutes

I’m really not sure what I’m doing wrong at this point… im trying to vew data stored by the time picker – but every time I run the application I get force close errors.

P.S.

It appears the issue is stemming from Line 74 in View Country.java

timeTv.setCurrentHour(result.getInt(timeIndex));

DATA OUT – JAVA:

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.TimePicker;

public class ViewCountry extends Activity {

   private long rowID;
   private TextView nameTv;
   private TextView capTv;
   private TextView codeTv; 
   private TimePicker timeTv; 

   @Override
   public void onCreate(Bundle savedInstanceState) 
   {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.view_country);

      setUpViews();
      Bundle extras = getIntent().getExtras();
      rowID = extras.getLong(CountryList.ROW_ID); 
   }

   private void setUpViews() {
       nameTv = (TextView) findViewById(R.id.nameText);
       capTv = (TextView) findViewById(R.id.capText);
       timeTv = (TimePicker) findViewById(R.id.timePicker1);
       codeTv = (TextView) findViewById(R.id.codeText);
   }

   @Override
   protected void onResume()
   {
      super.onResume();
      new LoadContacts().execute(rowID);
   } 

   private class LoadContacts extends AsyncTask 
   {
      DatabaseConnector dbConnector = new DatabaseConnector(ViewCountry.this);

      @Override
      protected Cursor doInBackground(Long... params)
      {
         dbConnector.open();
         return dbConnector.getOneContact(params[0]);
      } 

      @Override
      protected void onPostExecute(Cursor result)
      {
         super.onPostExecute(result);

         result.moveToFirst();
         // get the column index for each data item
         int nameIndex = result.getColumnIndex("name");
         int capIndex = result.getColumnIndex("cap");
         int codeIndex = result.getColumnIndex("code");
         int timeIndex = result.getColumnIndex("time");

         nameTv.setText(result.getString(nameIndex));
         capTv.setText(result.getString(capIndex));
         timeTv.setCurrentHour(result.getInt(timeIndex));
         codeTv.setText(result.getString(codeIndex));

         result.close();
         dbConnector.close();
      }
   } 


   @Override
   public boolean onCreateOptionsMenu(Menu menu) 
   {
      super.onCreateOptionsMenu(menu);
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.view_country_menu, menu);
      return true;
   }

   @Override
   public boolean onOptionsItemSelected(MenuItem item) 
   {
      switch (item.getItemId())
      {
         case R.id.editItem:
            Intent addEditContact =
               new Intent(this, AddEditCountry.class);

            addEditContact.putExtra(CountryList.ROW_ID, rowID);
            addEditContact.putExtra("name", nameTv.getText());
            addEditContact.putExtra("cap", capTv.getText());
            addEditContact.putExtra("time", timeTv.getCurrentHour());
            addEditContact.putExtra("code", codeTv.getText());
            startActivity(addEditContact); 
            return true;

         case R.id.deleteItem:
            deleteContact();
            return true;

         default:
            return super.onOptionsItemSelected(item);
      } 
   }

   private void deleteContact()
   {

      AlertDialog.Builder alert = new AlertDialog.Builder(ViewCountry.this);

      alert.setTitle(R.string.confirmTitle); 
      alert.setMessage(R.string.confirmMessage); 

      alert.setPositiveButton(R.string.delete_btn,
         new DialogInterface.OnClickListener()
         {
            public void onClick(DialogInterface dialog, int button)
            {
               final DatabaseConnector dbConnector = 
                  new DatabaseConnector(ViewCountry.this);

               AsyncTask deleteTask =
                  new AsyncTask()
                  {
                     @Override
                     protected Object doInBackground(Long... params)
                     {
                        dbConnector.deleteContact(params[0]); 
                        return null;
                     } 

                     @Override
                     protected void onPostExecute(Object result)
                     {
                        finish(); 
                     }
                  };

               deleteTask.execute(new Long[] { rowID });               
            }
         }
      );

      alert.setNegativeButton(R.string.cancel_btn, null).show();
   }
}

DATA OUT XML:

DATA INPUT – JAVA

import android.app.Activity;
import android.app.AlertDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.ViewGroup;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.TimePicker;

public class AddEditCountry extends Activity {

 private long rowID; 
 private EditText nameEt;
 private EditText capEt;
 private EditText codeEt;
 private TimePicker timeEt;

   @Override
   public void onCreate(Bundle savedInstanceState) 
   {
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.add_country);

      nameEt = (EditText) findViewById(R.id.nameEdit);
      capEt = (EditText) findViewById(R.id.capEdit);
      codeEt = (EditText) findViewById(R.id.codeEdit);
      timeEt = (TimePicker) findViewById(R.id.timeEdit);


      Bundle extras = getIntent().getExtras(); 

      if (extras != null)
      {
         rowID = extras.getLong("row_id");
         nameEt.setText(extras.getString("name"));  
         capEt.setText(extras.getString("cap"));  
         codeEt.setText(extras.getString("code"));  
         timeEt.setCurrentHour(extras.getInt("time"));  
      }

      Button saveButton =(Button) findViewById(R.id.saveBtn);
      saveButton.setOnClickListener(new OnClickListener() {

          public void onClick(View v) 
          {
             if (nameEt.getText().length() != 0)
             {
                AsyncTask saveContactTask = 
                   new AsyncTask() 
                   {
                      @Override
                      protected Object doInBackground(Object... params) 
                      {
                         saveContact();
                         return null;
                      }

                      @Override
                      protected void onPostExecute(Object result) 
                      {
                         finish();
                      }
                   }; 

                saveContactTask.execute((Object[]) null); 
             }

             else
             {
                AlertDialog.Builder alert = new AlertDialog.Builder(AddEditCountry.this);
                alert.setTitle(R.string.errorTitle); 
                alert.setMessage(R.string.errorMessage);
                alert.setPositiveButton(R.string.errorButton, null); 
                alert.show();
             }
          } 
     });
   }

   private void saveContact() 
   {
      DatabaseConnector dbConnector = new DatabaseConnector(this);

      if (getIntent().getExtras() == null)
      {
          dbConnector.insertContact(nameEt.getText().toString(),
                  capEt.getText().toString(),
                  timeEt.getCurrentHour().toString(),
                  codeEt.getText().toString());
      }
      else
      {
         dbConnector.updateContact(rowID,
            nameEt.getText().toString(),
            capEt.getText().toString(),
            timeEt.getCurrentHour().toString(),
            codeEt.getText().toString());
      }
   }
}

DATA INPUT XML:






  

  







    

    








    

    













  



import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater; 
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.TimePicker;

public class ViewCountry extends Activity {

   private long rowID;
   private TextView nameTv;
   private TextView capTv;
   private TextView codeTv; 
   private TimePicker timeTv; 

   @Override
   public void onCreate(Bundle savedInstanceState) 
   {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.view_country);

      setUpViews();
      Bundle extras = getIntent().getExtras();
      rowID = extras.getLong(CountryList.ROW_ID); 
   }

   private void setUpViews() {
       nameTv = (TextView) findViewById(R.id.nameText);
       capTv = (TextView) findViewById(R.id.capText);
       timeTv = (TimePicker) findViewById(R.id.timeEdit);
       codeTv = (TextView) findViewById(R.id.codeText);
   }

   @Override
   protected void onResume()
   {
      super.onResume();
      new LoadContacts().execute(rowID);
   } 

   private class LoadContacts extends AsyncTask 
   {
      DatabaseConnector dbConnector = new DatabaseConnector(ViewCountry.this);

      @Override
      protected Cursor doInBackground(Long... params)
      {
         dbConnector.open();
         return dbConnector.getOneContact(params[0]);
      } 

      @Override
      protected void onPostExecute(Cursor result)
      {
         super.onPostExecute(result);

         result.moveToFirst();
         // get the column index for each data item
         int nameIndex = result.getColumnIndex("name");
         int capIndex = result.getColumnIndex("cap");
         int codeIndex = result.getColumnIndex("code");
         int timeIndex = result.getColumnIndex("time");

         nameTv.setText(result.getString(nameIndex));
         capTv.setText(result.getString(capIndex));
         timeTv.setCurrentHour(result.getInt(timeIndex));
         codeTv.setText(result.getString(codeIndex));

         result.close();
         dbConnector.close();
      }
   } 


   @Override
   public boolean onCreateOptionsMenu(Menu menu) 
   {
      super.onCreateOptionsMenu(menu);
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.view_country_menu, menu);
      return true;
   }

   @Override
   public boolean onOptionsItemSelected(MenuItem item) 
   {
      switch (item.getItemId())
      {
         case R.id.editItem:
            Intent addEditContact =
               new Intent(this, AddEditCountry.class);

            addEditContact.putExtra(CountryList.ROW_ID, rowID);
            addEditContact.putExtra("name", nameTv.getText());
            addEditContact.putExtra("cap", capTv.getText());
            addEditContact.putExtra("time", timeTv.getCurrentHour());
            addEditContact.putExtra("code", codeTv.getText());
            startActivity(addEditContact); 
            return true;

         case R.id.deleteItem:
            deleteContact();
            return true;

         default:
            return super.onOptionsItemSelected(item);
      } 
   }

   private void deleteContact()
   {

      AlertDialog.Builder alert = new AlertDialog.Builder(ViewCountry.this);

      alert.setTitle(R.string.confirmTitle); 
      alert.setMessage(R.string.confirmMessage); 

      alert.setPositiveButton(R.string.delete_btn,
         new DialogInterface.OnClickListener()
         {
            public void onClick(DialogInterface dialog, int button)
            {
               final DatabaseConnector dbConnector = 
                  new DatabaseConnector(ViewCountry.this);

               AsyncTask deleteTask =
                  new AsyncTask()
                  {
                     @Override
                     protected Object doInBackground(Long... params)
                     {
                        dbConnector.deleteContact(params[0]); 
                        return null;
                     } 

                     @Override
                     protected void onPostExecute(Object result)
                     {
                        finish(); 
                     }
                  };

               deleteTask.execute(new Long[] { rowID });               
            }
         }
      );

      alert.setNegativeButton(R.string.cancel_btn, null).show();
   }
}

MOST RECENT LOGCAT: (after adding timeEdit to a TextView in view_country.xml)

03-22 03:02:27.724: D/Activity(32616): Activity.onPause(), editTextTapSensorList size: 0
03-22 03:02:27.794: W/dalvikvm(32616): threadid=1: thread exiting with uncaught exception (group=0x410889d8)
 03-22 03:02:27.794: E/AndroidRuntime(32616): FATAL EXCEPTION: main
03-22 03:02:27.794: E/AndroidRuntime(32616): java.lang.RuntimeException: Unable to start  activity ComponentInfo{com.nfc.linkingmanager/com.nfc.linkingmanager.ViewCountry}:  java.lang.ClassCastException: android.widget.TextView cannot be cast to  android.widget.TimePicker
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1960)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1985)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.ActivityThread.access$600(ActivityThread.java:127)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1151)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.os.Looper.loop(Looper.java:137)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.ActivityThread.main(ActivityThread.java:4477)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at java.lang.reflect.Method.invokeNative(Native Method)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at java.lang.reflect.Method.invoke(Method.java:511)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at dalvik.system.NativeStart.main(Native Method)
03-22 03:02:27.794: E/AndroidRuntime(32616): Caused by: java.lang.ClassCastException: android.widget.TextView cannot be cast to android.widget.TimePicker
03-22 03:02:27.794: E/AndroidRuntime(32616):    at com.nfc.linkingmanager.ViewCountry.setUpViews(ViewCountry.java:38)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at com.nfc.linkingmanager.ViewCountry.onCreate(ViewCountry.java:30)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.Activity.performCreate(Activity.java:4701)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1051)
03-22 03:02:27.794: E/AndroidRuntime(32616):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1924)
03-22 03:02:27.794: E/AndroidRuntime(32616):    ... 11 more

  1. use

    timeTv = (TimePicker) findViewById(R.id.timeEdit);

    instead of

    timeTv = (TimePicker) findViewById(R.id.timePicker1);

    because you have defined TimePicker id android:id="@+id/timeEdit" but trying to get timePicker1 which is not available in current Activity layout or make sure you are using right layout for Activity