My Android app needs to populate the ListView by array adapter using the data from an ArrayList of object which contains 5 fileds
I have trouble doing this. Can someone please help me with the code?
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Please post what you have tried to receive more specific helpcafebabe1991– cafebabe19912016-09-01 03:08:03 +00:00Commented Sep 1, 2016 at 3:08
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Refer to this link and this linkuser3678528– user36785282016-09-01 03:37:28 +00:00Commented Sep 1, 2016 at 3:37
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2 Answers
Try this
void myData(){
List<String> array = new ArrayList<String>();
array.add("kk");
array.add("bb");
ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,array);
listView.setAdapter(adapter);
}
then call myData() method on your onCreate
For a bit more complexed example, refer here
Comments
Try this:
import android.app.*;
import android.widget.*;
import android.os.*;
import java.util.*;
import android.view.*;
public class MainActivity extends Activity {
ListView nameListView;
ArrayList<HashMap<String, String>> nameList =new ArrayList<HashMap<String, String>>();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
nameListView = (ListView) findViewById(R.id.nameListView);
HashMap<String, String> map=new HashMap<String, String>();
map.put("name","jack");
map.put("value1", "100");
map.put("value2", "200");
map.put("value3", "300");
map.put("value4", "400");
nameList.add(map);
if (nameList.size() != 0) {
final ListAdapter nameAdapter = new SimpleAdapter(this, nameList, R.layout.view_entry, new String[] {
"name", "value1" ,"value2","value3","value4"}, new int[] { R.id.name, R.id.v1, R.id.v2 , R.id.v3, R.id.v4 });
nameListView.setAdapter(nameAdapter);
nameListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
HashMap<String, String> map = (HashMap<String, String>)nameAdapter.getItem(position);
String name=map.get("name");
Toast.makeText(getApplicationContext(), name, Toast.LENGTH_LONG).show();
}
});
}
}
}
view_entry.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/name"
android:layout_height="wrap_content"
android:text="Text"
android:layout_width="wrap_content"/>
<TextView
android:id="@+id/v1"
android:layout_height="wrap_content"
android:text="Text"
android:layout_width="wrap_content"/>
<TextView
android:id="@+id/v2"
android:layout_height="wrap_content"
android:text="Text"
android:layout_width="wrap_content"/>
<TextView
android:id="@+id/v3"
android:layout_height="wrap_content"
android:text="Text"
android:layout_width="wrap_content"/>
<TextView
android:id="@+id/v4"
android:layout_height="wrap_content"
android:text="Text"
android:layout_width="wrap_content"/>
</LinearLayout>
main.xml :
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<ListView
android:id="@+id/nameListView"
android:layout_height="wrap_content"
android:layout_width="wrap_content"/>
</LinearLayout>