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PODelete item and get it's title for TOAST message or change the name of an item custom adapter
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  1. PODelete item and get it's title for TOAST message or change the name of an item custom adapter
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    copied!<p>I have a custom adapter which I got from the internet. It has recipes in it with image and a title for each one. I have looked for my specific case all over google and this site but haven't found exactly what I needed. The info I did find was to complicated for me to adjust for my own case problem.</p> <p>Actually it supposed to be a simple task for anyone above beginner level, but unfortunately I am a beginner.</p> <ul> <li>I need to have the option to delete item from the list</li> <li>I need a toast message to display its name after deleting it</li> <li>I need to be able to change the title of an item.</li> </ul> <p>When it was an ArrayAdapter it was easy because I didn't have the image variable in the Adapter, but now all the functions to find title,change name and delete item are different.</p> <pre><code>public class MainActivity extends Activity { private ListView listView1; public String mName; View btnAdd; String mTitle; Cursor mCursor; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btnAdd = this.findViewById(R.id.btnAdd); Recipe recipe_data[] = new Recipe[] { new Recipe(R.drawable.cherry_pie, "Cherry Pie"), new Recipe(R.drawable.chocchip_cookie, "Cocolate Chips Cookies"), new Recipe(R.drawable.quaker_cookie, "Quaker Cookies"), new Recipe(R.drawable.short_pastry, "Short Pastry"), new Recipe(R.drawable.flour, "Will be added in the future...") }; RecipeAdapter adapter = new RecipeAdapter(this, R.layout.listview_item_row, recipe_data); listView1 = (ListView)findViewById(R.id.listView1); View header = (View)getLayoutInflater().inflate(R.layout.listview_header_row, null); listView1.addHeaderView(header); listView1.setAdapter(adapter); OnClickListener listen = new OnClickListener() { @Override public void onClick(View v) { EditText edit = (EditText) findViewById(R.id.txtItem); //we get the text into a global string mName = ((TextView)edit).getText().toString(); //we reverse the edit var back to be empty edit.setText(""); //this.notifyDataSetChanged(); } }; btnAdd.setOnClickListener(listen); registerForContextMenu(listView1); } @Override public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.setHeaderTitle("Context Menu"); menu.add(0, v.getId(), 0, "Change Name"); menu.add(0, v.getId(), 0, "Delete"); } @Override public boolean onContextItemSelected(MenuItem item) { AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); if(item.getTitle()=="Change Name"){changeN(item.getItemId());} else if(item.getTitle()=="Delete"){ Toast.makeText(this, "Item " + mTitle + " has been removed..", Toast.LENGTH_SHORT).show(); } else {return false;} return true; } //Change item name function public void changeN(int id){ } } public class RecipeAdapter extends ArrayAdapter&lt;Recipe&gt;{ Context context; int layoutResourceId; Recipe data[] = null; public RecipeAdapter(Context context, int layoutResourceId, Recipe[] data) { super(context, layoutResourceId, data); this.layoutResourceId = layoutResourceId; this.context = context; this.data = data; } @Override public View getView(int position, View convertView, ViewGroup parent) { View row = convertView; RecipeHolder holder = null; if(row == null) { LayoutInflater inflater = ((Activity)context).getLayoutInflater(); row = inflater.inflate(layoutResourceId, parent, false); holder = new RecipeHolder(); holder.imgIcon = (ImageView)row.findViewById(R.id.imgIcon); holder.txtTitle = (TextView)row.findViewById(R.id.txtTitle); row.setTag(holder); } else { holder = (RecipeHolder)row.getTag(); } Recipe recipe = data[position]; holder.txtTitle.setText(recipe.title); holder.imgIcon.setImageResource(recipe.icon); return row; } static class RecipeHolder { ImageView imgIcon; TextView txtTitle; } } public class Recipe { public int icon; public String title; public Recipe(){ super(); } public Recipe(int icon, String title) { super(); this.icon = icon; this.title = title; } @Override public String toString() { return this.title; } } </code></pre>
 

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