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POHave ListView selected checkbox delete from database
 

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  1. POHave ListView selected checkbox delete from database
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    <p>I'm using a custom list adapter for my ListView. How can I get the database rowid/_id from the checked checkbox so that I can multiple delete the data from my database?</p> <p>Here's my activity:</p> <pre><code>import android.app.ListActivity; import java.text.DecimalFormat; import org.yhw.PlanWithMe.R; import android.content.*; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.*; import android.widget.CompoundButton.OnCheckedChangeListener; import android.database.Cursor; public class Finance_delete extends ListActivity { Cursor cursor; private TextView dateText; private Button btnCancel; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.finance_delete); registerForContextMenu(this.getListView()); DBAdapter dbHelper = new DBAdapter(this); dbHelper.open(); // Get a Cursor for the list items Intent intent = getIntent(); String date = intent.getStringExtra("date"); Cursor listCursor = dbHelper.getAllFinance(date); startManagingCursor(listCursor); // set the custom list adapter setListAdapter(new MyListAdapter(this, listCursor)); dateText = (TextView) findViewById(R.id.lblDate); dateText.setText("Delete Spending: " + date); btnCancel = (Button) findViewById(R.id.btnCancel); btnCancel.setOnClickListener(click_listener); } private class MyListAdapter extends ResourceCursorAdapter { public MyListAdapter(Context context, Cursor cursor) { super(context, R.layout.list_item_with_description_delete, cursor); } @Override public void bindView(View view, Context context, Cursor cursor) { CheckBox cbListCheck = (CheckBox) view .findViewById(R.id.list_checkbox); cbListCheck.setChecked(false); cbListCheck .setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton cb, boolean isChecked) { if (cb.isChecked()) { // action } else if (isChecked == false) { // action } } }); TextView title = (TextView) view.findViewById(R.id.list_category); title.setText(cursor.getString(cursor .getColumnIndex(DBAdapter.KEY_Category))); TextView details = (TextView) view.findViewById(R.id.list_desc); StringBuffer detailsText = new StringBuffer(); String description = cursor.getString(cursor .getColumnIndex(DBAdapter.KEY_Desc)); TextView spendings = (TextView) view .findViewById(R.id.list_spending); String spending = cursor.getString(cursor .getColumnIndex(DBAdapter.KEY_Spending)); double tgtspend = Double.parseDouble(spending); DecimalFormat dFormat = new DecimalFormat("0.00"); String formatSpend = dFormat.format(tgtspend); spendings.setText("$" + formatSpend); if (description != null &amp;&amp; description.length() &gt; 0) { detailsText.append(description); } else { detailsText.append("-"); } details.setText(detailsText.toString()); } } private OnClickListener click_listener = new OnClickListener() { public void onClick(View view) { // Intent intent = null; switch (view.getId()) { case R.id.btnCancel: finish(); break; } } }; } </code></pre> <p>My Activity layout:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/finance_top" /&gt; &lt;ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="45dp" android:src="@drawable/navbar" /&gt; &lt;TextView android:id="@+id/lblDate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_marginTop="57dp" android:layout_alignParentLeft="true" android:textColor="#ffffff" android:textSize="16dp" /&gt; &lt;ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="240dp" android:layout_marginTop="48dp" android:src="@drawable/divider" /&gt; &lt;Button android:id="@+id/btnTick" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_marginRight="45dp" android:layout_marginTop="56dp" android:background="@drawable/btn_tick" /&gt; &lt;Button android:id="@+id/btnCancel" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_marginRight="6dp" android:layout_marginTop="56dp" android:background="@drawable/btn_cancel" /&gt; &lt;ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="282dp" android:layout_marginTop="48dp" android:src="@drawable/divider" /&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_marginTop="92dp" android:orientation="vertical" &gt; &lt;ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" /&gt; &lt;TextView android:id="@android:id/empty" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="106dp" android:layout_marginTop="180dp" android:text="@string/finance_note" android:textColor="#ffffff" android:textSize="18dp" /&gt; &lt;/LinearLayout&gt; &lt;/RelativeLayout&gt; </code></pre> <p>My ListView layout:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="?android:attr/listPreferredItemHeight" &gt; &lt;RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_weight="1" android:duplicateParentState="true" &gt; &lt;TextView android:id="@+id/list_category" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:gravity="center_vertical" android:textAppearance="?android:attr/textAppearanceLarge" /&gt; &lt;TextView android:id="@+id/list_desc" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@id/list_category" android:singleLine="true" android:textAppearance="?android:attr/textAppearanceSmall" /&gt; &lt;TextView android:id="@+id/list_spending" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:gravity="center" android:paddingBottom="10dip" android:paddingTop="10dip" android:textAppearance="?android:attr/textAppearanceLarge" /&gt; &lt;CheckBox android:id="@+id/list_checkbox" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="false" android:text="" &gt; &lt;/CheckBox&gt; &lt;/RelativeLayout&gt; &lt;/LinearLayout&gt; </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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