MainActivity
private static final String[] COUNTRIE_STRINGS = new String[]{
"aaaa", "bbbb", "cccc", "dddd","eeee","fffff","aab","abb","cc"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AutoCompleteTextView actvAutoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.avtv);
ArrayAdapter<String> adapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_dropdown_item_1line,COUNTRIE_STRINGS);
actvAutoCompleteTextView.setAdapter(adapter);
}
activity_main.xml
<AutoCompleteTextView
android:id="@+id/avtv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:ems="10" >
<requestFocus />
</AutoCompleteTextView>
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