how to diaplay no result found

[deepika deepi]

hi ,
i want to display a command in the coding "No Result Found" if the data does not exists in the coding while searching. how to display that command ? can any one tell this ?

package com.ListViewSearchExample;

import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;

public class ListViewSearchExample extends Activity
{
private ListView lv;
private EditText et;
private String listview_array[] = { "ONE", "TWO", "THREE", "FOUR", "FIVE",
"SIX", "SEVEN", "EIGHT", "NINE", "TEN" };
private ArrayList<String> array_sort= new ArrayList<String>();
int textlength=0;

public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

lv = (ListView) findViewById(R.id.ListView01);
et = (EditText) findViewById(R.id.EditText01);
lv.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, listview_array));

et.addTextChangedListener(new TextWatcher()
{
public void afterTextChanged(Editable s)
{
                                                                // Abstract Method of TextWatcher Interface.
}
public void beforeTextChanged(CharSequence s,
int start, int count, int after)
{
// Abstract Method of TextWatcher Interface.
}
public void onTextChanged(CharSequence s,
int start, int before, int count)
{
textlength = et.getText().length();
array_sort.clear();
for (int i = 0; i < listview_array.length; i++)
{
if (textlength <= listview_array[i].length())
{
if(et.getText().toString().equalsIgnoreCase(
(String)
listview_array[i].subSequence(0,
textlength)))
{
                                                                                                                array_sort.add(listview_array[i]);
                                                                                                }
                                                                                }
                                                                }
lv.setAdapter(new ArrayAdapter<String>
(ListViewSearchExample.this,
android.R.layout.simple_list_item_1, array_sort));
}
});
}
}

[Deepak Bala]

I cannot tell what your code is trying to do because it is difficult to read. Have you considered using a Toast ?

[deepika deepi]

i have an query to search the data from an string. and i get the results for what queries that exists in the string. but it does not give any result if the data does not exists in the system. want to make that display. i am trying to use that result in the code. but it does not work or shows some error. i am not sure where to use the code. till i used i have used it in "if" case (i.e) after the if case i have used an "else" statement for displaying that result. but it does not work.

[Swastik Dey]

Deepika,

Do you mean in each keypress it searches the array and if a match is found starting with those characters it displays the matched result or else it displays no result found?

[deepika deepi]

ya exactly that is the case

[Swastik Dey]

Deepika,

Could you please try this once

package com.ListViewSearchExample;

import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;

public class ListViewSearchExample extends Activity
{
	private ListView lv,lv1;
	private EditText et;
	private String listview_array[] = { "ONE", "TWO", "THREE", "FOUR", "FIVE",
			"SIX", "SEVEN", "EIGHT", "NINE", "TEN" };
	private ArrayList<String> array_sort= new ArrayList<String>();
	int textlength=0;

	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		lv = (ListView) findViewById(R.id.ListView01);
		lv1 = (ListView) findViewById(R.id.ListView02);
		et = (EditText) findViewById(R.id.EditText01);
		lv.setAdapter(new ArrayAdapter<String>(this,
				android.R.layout.simple_list_item_1, listview_array));

		et.addTextChangedListener(new TextWatcher()
		{
			public void afterTextChanged(Editable s)
			{
				// Abstract Method of TextWatcher Interface.
			}
			public void beforeTextChanged(CharSequence s,
					int start, int count, int after)
			{
				// Abstract Method of TextWatcher Interface.
			}
			public void onTextChanged(CharSequence s,
					int start, int before, int count)
			{
				textlength = et.getText().length();
				array_sort.clear();
				boolean matchfound=false;
				for (int i = 0; i < listview_array.length; i++)
				{
					if (textlength <= listview_array[i].length())
					{
						if(!"".equalsIgnoreCase(et.getText().toString())){
							if(listview_array[i].toUpperCase().startsWith(et.getText().toString().toUpperCase()))
							{
								array_sort.add(listview_array[i]);
								matchfound=true;
							}
						}
						else{
							//array_sort.add("No results found");
							matchfound=false;
						}
					}
				}
				if(!matchfound){
					array_sort.add("No results found");
				}
				lv1.setAdapter(new ArrayAdapter<String>
				(ListViewSearchExample.this,
						android.R.layout.simple_list_item_1, array_sort));
			}
		});
	}
}

main.xml
-----------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent" android:layout_height="wrap_content">


<ListView android:id="@+id/ListView01" android:layout_width="wrap_content" android:layout_height="200px"></ListView>
<EditText android:id="@+id/EditText01" android:layout_width="200px" android:layout_height="wrap_content" android:inputType="none"></EditText>
<ListView android:id="@+id/ListView02" android:layout_width="wrap_content" android:layout_height="wrap_content"></ListView>
</LinearLayout>

[deepika deepi]

ya the code works fine. thank you

[Swastik Dey]

You are welcome.