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POadding item to listView after passing info through an intent in Android
 

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  1. POadding item to listView after passing info through an intent in Android
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    <p>I am trying to add an item, first by using an add button, then going to a different activity, then coming back to the original one and adding it in a listview. I can't seem to have more than one item.</p> <p>AddScreen.class (My first activity):</p> <pre><code> package com.painLogger; **IMPORTS** public class AddScreen extends Activity implements OnClickListener, OnItemClickListener { /** Called when the activity is first created. */ Button addButton; SimpleAdapter adapter; List&lt;HashMap&lt;String, String&gt;&gt; painItems = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); ListView listthings; int[] to; String[] from; String painLevelString, timeOfPainString, textTreatmentString, painLocation, row1, row2; TextView painTitle; boolean myFirstTime; int k; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.addscreen); // if it's the first time opening the app, then go to 'AddMyInfo.class' SharedPreferences settings = this.getSharedPreferences("MyApp", 0); SharedPreferences.Editor e = settings.edit(); boolean firstrun = settings.getBoolean("firstrun", true); if (firstrun) { e.putBoolean("firstrun", false); e.commit(); Intent intent = new Intent(this, AddMyInfo.class); startActivity(intent); } //initialize painTitle and set its font painTitle = (TextView) findViewById(R.id.painTitle); Typeface font = Typeface.createFromAsset(getAssets(), "Chantelli_Antiqua.ttf"); painTitle.setTypeface(font); listthings = (ListView) findViewById(R.id.listthings); from = new String[] { "row_1" + painItems.size(), "row_2" + painItems.size() }; to = new int[] { R.id.row1, R.id.row2 }; adapter = new SimpleAdapter(this, painItems, R.layout.mylistlayout, from, to); listthings.setAdapter(adapter); listthings.setOnItemClickListener(this); addButton = (Button) findViewById(R.id.addButton); addButton.setOnClickListener(this); } @Override //on the activityresult,get the string extra, then add the item to the list protected void onActivityResult(int requestCode, int resultCode, Intent data) { if(this.getIntent().hasExtra("row1")){ row1 = this.getIntent().getStringExtra("row1"); row2 = this.getIntent().getStringExtra("row2"); painLevelString = this.getIntent().getStringExtra("com.painLogger.painLevel"); painLocation = this.getIntent().getStringExtra("painLocation"); timeOfPainString = this.getIntent().getStringExtra("com.painLogger.painTime"); textTreatmentString = this.getIntent().getStringExtra("com.painLogger.treatment"); addItem(); } } // to add the item, put it in the map, and add the map into the list private void addItem() { HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); map.put("row_1" + painItems.size(), row1); map.put("row_2" + painItems.size(), row2); painItems.add(map); adapter.notifyDataSetChanged(); } public void onClick(View v) { // When '+' clicked, go to the PainLoggerActivity.java, where you can // click enter, and that sends those strings back to here, where I can // incorporate them into a list view, same as was there in the // PainLogger Activity Intent goToFields = new Intent (this, PainLoggerActivity.class); //put the desired extras into the intent startActivityForResult(goToFields, 1); } public void onItemClick(AdapterView&lt;?&gt; a, View v, int position, long id) { Intent intent = new Intent(this, Item1.class); intent.putExtra("com.painLogger.painLevel", painLevelString); intent.putExtra("com.painLogger.painTime", timeOfPainString); intent.putExtra("com.painLogger.treatment", textTreatmentString); intent.putExtra("painLocation", painLocation); startActivity(intent); } } </code></pre> <p>My PainLoggerActivity, where I enter various info to be put into the list:</p> <p>package com.painLogger; // imports public class PainLoggerActivity extends Activity implements OnClickListener, OnItemClickListener, OnKeyListener {</p> <pre><code>/** Called when the activity is first created. */ EditText txtItem, txtItem2, timeOfPain, textTreatment, painLevel; Button btnAdd; ListView listItems; ArrayAdapter&lt;String&gt; aa; List&lt;HashMap&lt;String, String&gt;&gt; painItems = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); int[] to; String[] from; SimpleAdapter adapter; String timeOfPainString, textTreatmentString, painLevelString, painLocation; Spinner s; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); txtItem = (EditText) findViewById(R.id.txtItem); txtItem2 = (EditText) findViewById(R.id.txtItem2); timeOfPain = (EditText)findViewById(R.id.timeOfPain); textTreatment = (EditText)findViewById(R.id.textTreatment); painLevel = (EditText)findViewById(R.id.painLevel); btnAdd = (Button) findViewById(R.id.btnAdd); listItems = (ListView) findViewById(R.id.listItems); btnAdd.setOnClickListener(this); from = new String[] { "row_1", "row_2" }; to = new int[] { R.id.row1, R.id.row2 }; adapter = new SimpleAdapter(this, painItems, R.layout.mylistlayout, from, to); listItems.setAdapter(adapter); listItems.setOnItemClickListener(this); s = (Spinner) findViewById(R.id.spinner1); ArrayAdapter&lt;?&gt;adapter = ArrayAdapter.createFromResource( this, R.array.planets, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); s.setAdapter(adapter); } private void addItem() { timeOfPainString = timeOfPain.getText().toString(); textTreatmentString = textTreatment.getText().toString(); painLevelString = s.getSelectedItem().toString(); painLocation = txtItem.getText().toString(); Intent intent = new Intent (this, AddScreen.class); intent.putExtra("com.painLogger.painLevel", painLevelString); intent.putExtra("com.painLogger.painTime", timeOfPainString); intent.putExtra("com.painLogger.treatment", textTreatmentString); intent.putExtra("painLocation", painLocation); setResult(1, intent); finish(); HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); map.put("row_1", txtItem.getText().toString()); map.put("row_2", txtItem2.getText().toString()); painItems.add(map); adapter.notifyDataSetChanged(); } public void onClick(View v) { if (v == this.btnAdd) { addItem(); } } public boolean onKey(View v, int keyCode, KeyEvent event) { if (event.getAction() == KeyEvent.ACTION_DOWN &amp;&amp; keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { this.addItem(); } return false; } public void onItemClick(AdapterView&lt;?&gt; a, View v, int position, long id) { timeOfPainString = timeOfPain.getText().toString(); textTreatmentString = textTreatment.getText().toString(); painLevelString = s.getSelectedItem().toString(); painLocation = txtItem.getText().toString(); //create the intent Intent intent = new Intent (this, Item1.class); //put the desired extras into the intent intent.putExtra("com.painLogger.painLevel", painLevelString); intent.putExtra("com.painLogger.painTime", timeOfPainString); intent.putExtra("com.painLogger.treatment", textTreatmentString); intent.putExtra("pain location", painLocation); startActivity(intent); //set the variables to "", empty } } </code></pre> <p>My Item1.class is simply where the app goes when an item on the list is clicked. it has no other purpose.</p> <p>I am having problem because when I add the item in the list, it replaces the previous one, and I am left with only one item.</p>
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