Databases
StackOverflow2013
Postsdbo
POListView: How to add data on custom ArrayAdapter?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POListView: How to add data on custom ArrayAdapter?
    primarykey
    data
    text
    <p>To have a colorful ListView I have created my own ArrayAdapter, but when I want to use <code>adapter.clear()</code> or <code>adapter.add()</code> it gives me errors. Here is the code and errors.</p> <p>XML file:</p> <pre><code>&lt;ListView android:id="@+id/android:list" android:layout_width="0dip" android:layout_height="wrap_content" android:padding="10dip" android:layout_margin="4dip" android:layout_weight="1"&gt; &lt;/ListView&gt; </code></pre> <p>Adapter:</p> <pre><code>class stableArrayAdapter extends ArrayAdapter&lt;String&gt; { HashMap&lt;String, Integer&gt; mIdMap = new HashMap&lt;String, Integer&gt;(); public stableArrayAdapter(Context context, int textViewResourceId, String [] objects) { super(context, textViewResourceId, objects); for (int i = 0; i &lt; objects.length; ++i) { mIdMap.put(objects[i], i); } } @Override public long getItemId(int position) { String item = getItem(position); return mIdMap.get(item); } @Override public boolean hasStableIds() { return true; } } </code></pre> <p>Java code:</p> <pre><code>public class createtarget extends ListActivity { stableArrayAdapter adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.createtarget); lstView = getListView(); lstView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); lstView.setTextFilterEnabled(true); Target=new String []{""}; adapter = new stableArrayAdapter(this,android.R.layout.simple_list_item_checked, Target); setListAdapter(adapter); } } </code></pre> <p>Add code:</p> <pre><code>public void submit(View view) { adapter.add("Hello"); } </code></pre> <p>Errors:</p> <pre><code>06-08 05:21:11.785: E/AndroidRuntime(3584): FATAL EXCEPTION: main 06-08 05:21:11.785: E/AndroidRuntime(3584): java.lang.IllegalStateException: Could not execute method of the activity 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.view.View$1.onClick(View.java:3599) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.view.View.performClick(View.java:4204) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.view.View$PerformClick.run(View.java:17355) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.os.Handler.handleCallback(Handler.java:725) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.os.Handler.dispatchMessage(Handler.java:92) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.os.Looper.loop(Looper.java:137) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.app.ActivityThread.main(ActivityThread.java:5041) 06-08 05:21:11.785: E/AndroidRuntime(3584): at java.lang.reflect.Method.invokeNative(Native Method) 06-08 05:21:11.785: E/AndroidRuntime(3584): at java.lang.reflect.Method.invoke(Method.java:511) 06-08 05:21:11.785: E/AndroidRuntime(3584): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 06-08 05:21:11.785: E/AndroidRuntime(3584): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 06-08 05:21:11.785: E/AndroidRuntime(3584): at dalvik.system.NativeStart.main(Native Method) 06-08 05:21:11.785: E/AndroidRuntime(3584): Caused by: java.lang.reflect.InvocationTargetException 06-08 05:21:11.785: E/AndroidRuntime(3584): at java.lang.reflect.Method.invokeNative(Native Method) 06-08 05:21:11.785: E/AndroidRuntime(3584): at java.lang.reflect.Method.invoke(Method.java:511) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.view.View$1.onClick(View.java:3594) 06-08 05:21:11.785: E/AndroidRuntime(3584): ... 11 more 06-08 05:21:11.785: E/AndroidRuntime(3584): Caused by: java.lang.UnsupportedOperationException 06-08 05:21:11.785: E/AndroidRuntime(3584): at java.util.AbstractList.add(AbstractList.java:404) 06-08 05:21:11.785: E/AndroidRuntime(3584): at java.util.AbstractList.add(AbstractList.java:425) 06-08 05:21:11.785: E/AndroidRuntime(3584): at android.widget.ArrayAdapter.add(ArrayAdapter.java:179) 06-08 05:21:11.785: E/AndroidRuntime(3584): at net.learn2develop.UsingIntent.createtarget.submit(createtarget.java:136) 06-08 05:21:11.785: E/AndroidRuntime(3584): ... 14 more 06-08 05:21:16.206: E/Trace(3614): error opening trace file: No such file or directory (2) </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USSalman
    1. USSalman
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POListView: How to add data on custom ArrayAdapter?
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    2. VO
      singulars
      1. POListView: How to add data on custom ArrayAdapter?
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COThis is why you are getting this error: (http://stackoverflow.com/a/5125428/833647)
      singulars
      1. POListView: How to add data on custom ArrayAdapter?
      1. USKen Wolf
    2. COYour object array is empty by the way: `Target=new String []{""};`
      singulars
      1. POListView: How to add data on custom ArrayAdapter?
      1. USKen Wolf
    3. COYes i know, in the beginning it's empty, but i can add data to this
      singulars
      1. POListView: How to add data on custom ArrayAdapter?
      1. USSalman
 

Querying!

 
Guidance
A row detail

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.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload