I'm currently working on an Android Application for school. I already looked around the forums and have attempted to fix the issue myself, but I can't seem to figure out why my ListView does not automatically update when I press the save button. I actually have to press the Drop Down menu and select and item before it updates. Can anyone take a look at it and let me know what I'm doing wrong?
Thanks!
activity_main.xml
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/GridLayout1" android:layout_width="match_parent" android:layout_height="match_parent" android:columnCount="1" android:orientation="horizontal" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.physicalactivitytracker.MainActivity" > <Spinner android:id="@+id/activityDropDown" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="start" android:background="@android:drawable/btn_dropdown" android:entries="@array/activity_array" android:spinnerMode="dropdown" > <requestFocus/> </Spinner> <LinearLayout android:layout_gravity="fill_horizontal" android:focusable="true" android:focusableInTouchMode="true"> <EditText android:id="@+id/infoText" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:layout_gravity="bottom|fill_horizontal" android:ems="10" android:hint="@string/infoHint" android:imeOptions="actionDone" android:singleLine="true" android:lines="1" android:inputType="number" /> <ImageButton android:id="@+id/saveButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/saveDescription" android:src="@android:drawable/ic_menu_save" /> </LinearLayout> <LinearLayout android:gravity="fill_horizontal" > <Button android:id="@+id/soFarButton" style="android:buttonBarStyle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/psf" /> <Button android:id="@+id/startOverButton" style="android:buttonBarStyle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/so" /> </LinearLayout> <LinearLayout android:layout_height="0dp" android:layout_gravity="fill" android:layout_marginTop="@dimen/activity_vertical_margin" android:background="@android:color/holo_blue_bright" android:orientation="vertical" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" > <TextView android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="fill_horizontal" android:gravity="center_horizontal" android:text="@string/taggedSearches" android:textAppearance="?android:attr/textAppearanceMedium" /> <ListView android:id="@android:id/list" android:layout_width="match_parent" android:layout_height="0dp" android:layout_gravity="fill" android:layout_weight="1" /> </LinearLayout> activity_list.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/textView" android:layout_width="match_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:gravity="center_vertical" android:textAppearance="?android:attr/textAppearanceMedium" > MainActivity.java
package com.example.physicalactivitytracker; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import java.util.ArrayList; import java.util.Collections; import java.util.List; import android.app.AlertDialog; import android.app.ListActivity; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.view.View; import android.view.View.OnClickListener; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ImageButton; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends ListActivity { private static final String SEARCHES = "searches"; private Spinner activityDropDown; private ImageButton saveButton; private EditText infoText; private SharedPreferences savedSearches; private ArrayList<String> tags; private ArrayAdapter<String> adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); addItemsOnSpinner(); // get references activityDropDown = (Spinner) findViewById(R.id.activityDropDown); infoText = (EditText) findViewById(R.id.infoText); activityDropDown.setOnItemSelectedListener(acList); //Get Users Saved Searches savedSearches = getSharedPreferences(SEARCHES, MODE_PRIVATE); // Store Saved Info to List tags = new ArrayList<String>(savedSearches.getAll().keySet()); // Create Array Adapter adapter = new ArrayAdapter<String>(this, R.layout.activity_list_item, tags); setListAdapter(adapter); // Register Listener to Save Searches ImageButton saveButton = (ImageButton) findViewById(R.id.saveButton); saveButton.setOnClickListener(saveButtonListener); // Register listener to touches on list getListView().setOnItemClickListener(itemClickListener); // Set Listener on long click item to edit/delete/etc getListView().setOnItemLongClickListener(itemLongClickListener); } //end on create //saveButtonListener for Saving Info to List public OnClickListener saveButtonListener = new OnClickListener() { @Override public void onClick(View v) { // create info tags that match drop down activity if (infoText.getText().length() > 0 && infoText.getText().toString().matches(".*\\d+.*") && activityDropDown.getSelectedItem().toString().matches("Walking")) { addTaggedSearch(activityDropDown.getSelectedItem().toString() + " " + infoText.getText().toString() + " Miles"); infoText.setText(""); // clear infoText } else if (infoText.getText().length() > 0 && infoText.getText().toString().matches(".*\\d+.*") && activityDropDown.getSelectedItem().toString().matches("Running")) { addTaggedSearch(activityDropDown.getSelectedItem().toString() + " " + infoText.getText().toString() + " Miles"); infoText.setText(""); // clear infoText } else if (infoText.getText().length() > 0 && infoText.getText().toString().matches(".*\\d+.*") && activityDropDown.getSelectedItem().toString().matches("Stairs")) { addTaggedSearch(activityDropDown.getSelectedItem().toString() + " " + infoText.getText().toString() + " Number of Floors"); infoText.setText(""); // clear infoText } else if (infoText.getText().length() > 0 && infoText.getText().toString().matches(".*\\d+.*") && activityDropDown.getSelectedItem().toString().matches("Generic")) { addTaggedSearch(activityDropDown.getSelectedItem().toString() + " " + infoText.getText().toString() + " Calories"); infoText.setText(""); // clear infoText } else // display message asking user to enter info { // create new alert AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); // set alert message to display builder.setMessage(R.string.missingMessage); // provide an OK button to dismiss dialog builder.setPositiveButton(R.string.OK, null); // create the alert dialog from builder AlertDialog errorDialog = builder.create(); errorDialog.show(); // displays error dialog } } }; // end OnClickListener // add new search to save file and refresh buttons private void addTaggedSearch(String tag) { // get a SharedPrefrences.Editor to store info SharedPreferences.Editor preferencesEditor = savedSearches.edit(); preferencesEditor.putString(tag, tag); // store search preferencesEditor.apply(); // store updated preference // add info if (!tags.add(tag)) { tags.add(tag); // add new tag adapter.notifyDataSetChanged(); // rebind tags to ListView } } // end add tag // itemClickListenerListener opens tag info OnItemClickListener itemClickListener = new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { //show tag info } }; // end itemClickListener //itemLongCLickListener displays a dialog allowing user to delete or edit saves list item OnItemLongClickListener itemLongClickListener = new OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { // get tag that user clicked final String tag = ((TextView) view).getText().toString(); // create new alert dialog AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); // set the AlertDialog Title builder.setTitle(getString(R.string.shareEditDeleteTitle, tag)); // set list of items to display in alert builder.setItems(R.array.dialog_items, new DialogInterface.OnClickListener() { // respond to touch by sharing, editing or deleting @Override public void onClick(DialogInterface dialog, int which) { switch (which) { case 0: //share shareSearch(tag); break; case 1: //edit // sets infoText to match tag infoText.setText(tag); infoText.setText(savedSearches.getString(tag, "")); break; case 2: // delete deleteSearch(tag); break; } } } //end DialogInterface.OnClickListener ); // end call to builder.setItems // set AlertDialog negative Button builder.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() { // called when cancel button is clicked public void onClick(DialogInterface dialog, int id) { dialog.cancel(); //dismiss AlertDialog } } ); // end call to setNegativeButon builder.create().show(); //display AlertDialog return true; } // end method onItemLongClick }; // end onItemLongClick declaration //allow user to choose an app for sharing saved items private void shareSearch(String tag) { // create Intent to share urlString Intent shareIntent = new Intent(); shareIntent.setAction(Intent.ACTION_SEND); shareIntent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.shareSubject)); shareIntent.putExtra(Intent.EXTRA_TEXT, getString(R.string.shareMessage)); shareIntent.setType("text/plain"); // display apps that can share text startActivity(Intent.createChooser(shareIntent, getString(R.string.shareSearch))); } // deletes search after user confirms the delete operation private void deleteSearch(final String tag) { // create new AlertDialog AlertDialog.Builder confirmBuilder = new AlertDialog.Builder(this); // set the AlertDialog message confirmBuilder.setMessage(getString(R.string.confirmMessage, tag)); // set AlertDialog negative message confirmBuilder.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() { // called when Cancel is clicked public void onClick(DialogInterface dialog, int id) { dialog.cancel(); // dismiss dialog } } ); // end call to setNegativeButton // set the AlertDialogs positive button confirmBuilder.setPositiveButton(getString(R.string.delete), new DialogInterface.OnClickListener() { // called when Cancel button is clicked public void onClick(DialogInterface dialog, int id) { tags.remove(tag); // remove tag from tags // get SharePrefrences.Editor to remove saved info SharedPreferences.Editor preferencesEditor = savedSearches.edit(); preferencesEditor.remove(tag); // remove search preferencesEditor.apply(); // save the changes // rebind tags ArrayList to ListView to show updates list adapter.notifyDataSetChanged(); } } // end OnClickListener ); // end call to setPositiveButton confirmBuilder.create().show(); // display AlertDialog } // end method Delete Search public void addItemsOnSpinner() { activityDropDown = (Spinner) findViewById(R.id.activityDropDown); List<String> list = new ArrayList<String>(); list.add("Walking"); list.add("Running"); list.add("Stairs"); list.add("Generic"); ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list); dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); activityDropDown.setAdapter(dataAdapter); } // on Item Select Update infoText Hint public OnItemSelectedListener acList = new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String selectedItem = parent.getItemAtPosition(position).toString(); if(selectedItem.equals("Walking")) { infoText.setHint("# of Miles Walked"); } else if(selectedItem.equals("Running")) { infoText.setHint("# of Miles Ran"); } else if(selectedItem.equals("Stairs")) { infoText.setHint("# of Floors Walked"); } else if(selectedItem.equals("Generic")) { infoText.setHint("# of Calories Burned"); } } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }; public void addListenerOnSpinnerItemSelection() { activityDropDown = (Spinner) findViewById(R.id.activityDropDown); activityDropDown.setOnItemSelectedListener(new CustomOnItemSelectedListener()); } public void addListenerOnButton() { activityDropDown = (Spinner) findViewById(R.id.activityDropDown); saveButton = (ImageButton) findViewById(R.id.saveButton); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
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