Android Edittext Seterror

In Some Devices , SetError text will not be visible..Solution For that..

int ecolor = getResources().getColor(R.color.textcolor); 

String errorString = getResources().getString(R.string.ErrorString);

ForegroundColorSpan textSpan = new ForegroundColorSpan(ecolor);

errortext = new SpannableStringBuilder(errorString);

errortext.setSpan(textSpan, 0, errorString.length(), 0);

Android ExpandableListView Page Scroll From Top

If you are using ExpandableList View , Sometimes page will be automatically scroll to middle of the list..will not be shown from top of the screen ..to resolve it..

scrollviewid.post(new Runnable() {

public void run() {

scroll.scrollTo(0, 0);

}

});

Android Add Contact to your Phone

Here is a sample code for adding contact to android phone

Intent intent = new Intent(Intent.ACTION_INSERT);

intent.setType(ContactsContract.Contacts.CONTENT_TYPE);

intent.putExtra(ContactsContract.Intents.Insert.NAME, contactname);

intent.putExtra(ContactsContract.Intents.Insert.PHONE, mobilenumber);

intent.putExtra(ContactsContract.Intents.Insert.EMAIL, email);

intent.putExtra(ContactsContract.Intents.Insert.POSTAL, address);

startActivity(intent);

Android Expandable ListView Inside ScrollView

When you r using listview inside ScrollView , we can't scroll properly..List view will not be shown properly..Here a solution for that..

import java.util.ArrayList;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.view.View;

import android.view.ViewGroup;

import android.view.View.MeasureSpec;

import android.widget.ExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.ExpandableListView.OnGroupClickListener;

import android.widget.ListAdapter;

import android.widget.ListView;

public class ExpandAndCollapseActivity extends Activity {

private ExpandableListView expandableListView;

@Override

public void onCreate(Bundle savedInstanceState) {

     super.onCreate(savedInstanceState);

     setContentView(R.layout.expand_and_collapse);

    expandableListView = (ExpandableListView)findViewById(R.id.ExpandAndCollapseView);            

     ArrayList<String> Groups = new ArrayList<String>();

     Groups.add("Group A");

     Groups.add("Group B");

     Groups.add("Group C");

     Groups.add("Group D");

     String[] GroupA = { "Uruguay", "Mexico", "Argentina", "Korea Republic" };

     String[] GroupB = { "England", "USA", "Germany", "Ghana" };

     String[] GroupC = { "Netherlands", "Japan", "Paraguay", "Slovakia" };

     String[] GroupD = { "Brazil", "Portugal", "Spain", "Chile" };

     ExpandAndCollapseAdapter ExpandableAdapter = new ExpandAndCollapseAdapter(

          this, this, Groups, GroupA, GroupB, GroupC, GroupD);

     expandableListView.setAdapter(ExpandableAdapter);

     setListViewHeight(expandableListView);

     expandableListView.setOnGroupClickListener(new OnGroupClickListener() {

          @Override

          public boolean onGroupClick(ExpandableListView parent, View v,

               int position, long id) {

               setListViewHeight(parent, position);

               return false;

          }

     });

}

private void setListViewHeight(ListView listView) {

     ListAdapter listAdapter = listView.getAdapter();

     int totalHeight = 0;

     for (int i = 0; i < listAdapter.getCount(); i++) {

          View listItem = listAdapter.getView(i, null, listView);

          listItem.measure(0, 0);

          totalHeight += listItem.getMeasuredHeight();

     }

     ViewGroup.LayoutParams params = listView.getLayoutParams();

     params.height = totalHeight

          + (listView.getDividerHeight() * (listAdapter.getCount() - 1));

     listView.setLayoutParams(params);

     listView.requestLayout();

}

private void setListViewHeight(ExpandableListView listView,

         int group) {

      ExpandableListAdapter listAdapter = listView.getExpandableListAdapter();

      int totalHeight = 0;

      int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(),

         MeasureSpec.AT_MOST);

      for (int i = 0; i < listAdapter.getGroupCount(); i++) {

             View groupItem = listAdapter.getGroupView(i, false, null, listView);

             groupItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);

             totalHeight += groupItem.getMeasuredHeight();

        if (((listView.isGroupExpanded(i)) && (i != group))

           || ((!listView.isGroupExpanded(i)) && (i == group))) {

              for (int j = 0; j < listAdapter.getChildrenCount(i); j++) {

                  View listItem = listAdapter.getChildView(i, j, false, null,

                      listView);

                  listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);

                  totalHeight += listItem.getMeasuredHeight();

               }

        }

     }

     ViewGroup.LayoutParams params = listView.getLayoutParams();

     int height = totalHeight

          + (listView.getDividerHeight() * (listAdapter.getGroupCount() - 1));

     if (height < 10)

          height = 200;

     params.height = height;

     listView.setLayoutParams(params);

     listView.requestLayout();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

     getMenuInflater().inflate(R.menu.expand_and_collapse, menu);

     return true;

}

}

You can create your Own Adapter and Layouts..

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