Android search from searchable activity
<activity android:name=".ListActivity" android:label="List">
    <meta-data android:name="android.app.default_searchable" android:value=".SearchActivity" />
</activity>

<activity android:name=".SearchActivity" android:label="Results">
    <intent-filter>
        <action android:name="android.intent.action.SEARCH" />
    </intent-filter>
    <meta-data android:name="android.app.searchable" android:resource="@xml/search" android:value=".SearchActivity" />
</activity>

@Override
protected void onResume() {
    super.onResume();
    Intent queryIntent = getIntent();
    String value = queryIntent.getStringExtra(SearchManager.QUERY);
    setView(value);
}

ca = new CustomAdapter(this, R.layout.customadapter, resultArray);
list.setAdapter(pa);
list.invalidate();

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    String value = intent.getStringExtra(SearchManager.QUERY);
    setView(value);
}