How to set a simple adapter to listview?

android, android-listview, simpleadapter

Solution

Your problem is in here:

    R.layout.grouplistlayout,
    new int[] { R.id.listview_grouplist });

The top one should be pointing to a list layout, like `android.R.layout.simple_list_item_1` The bottom one should be pointing to to a TextView, not a list view.

Also, I don't see where you are binding the adapter to the listview.

From the SimpleAdapter docs:

public SimpleAdapter(Context context, 
                     List<? extends Map<String, ?>> data, 
                     int resource, 
                     String[] from, 
                     int[] to)

Since: API Level 1

Constructor

Parameters context The context where the View associated with this SimpleAdapter is running data A List of Maps. Each entry in the List corresponds to one row in the list. The Maps contain the data for each row, and should include all the entries specified in "from" resource Resource identifier of a view layout that defines the views for this list item. The layout file should include at least those named views defined in "to" from A list of column names that will be added to the Map associated with each item. to The views that should display column in the "from" parameter. These should all be TextViews. The first N views in this list are given the values of the first N columns in the from parameter.

Problem

I have problem adding arraylist to list view, will explain about my problem here.. tell me what is wrong here... I have three linear layouts, and in the middle layout i have list view, as shown in the xml file below.. ` ``` <LinearLayout android:id="@+id/linearLayout1" android:layout_width="match_parent" android:layout_height="wrap_content" > <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" /> <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="0.59" android:src="@drawable/x_title" /> <Button android:id="@+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" /> </LinearLayout> <LinearLayout android:id="@+id/linearLayout_grouplist" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="0.09" android:orientation="vertical" android:weightSum="1" > <ListView android:id="@+id/listview_grouplist" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" > </ListView> </LinearLayout> <LinearLayout android:id="@+id/linearLayout2" android:layout_width="match_parent" android:layout_height="wrap_content" > <Button android:id="@+id/button4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" /> <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="0.39" android:text="TextView" /> <Button android:id="@+id/button5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" /> </LinearLayout> </LinearLayout>` ``` when I try to add items to the list with array adapter, its working fine for me..but its not working for List Adapter. It is crashing. ``` ListAdapter adapter = new SimpleAdapter(this, mylist, R.layout.grouplistlayout, new String[] { "Group Name" }, new int[] { R.id.listview_grouplist }); String[] values = new String[] { "Android", "iPhone", "WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2" }; ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, values); lst_projlist.setAdapter(adapter1); ``` could someone tell me what is missing here ?

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