我想展示在 TextView 中输入文本的历史记录。这应该类似于 Google Play 上的搜索栏:
目前,我正在使用一个带有 android:completionThreshold="1" 属性的 AutoCompleteTextView,但我不想在建议出现之前输入任何文本。
有什么想法吗?
![google play search](https://istack.dev59.com/XQ00w.webp)
有什么想法吗?
import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.os.Build;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final String[] COUNTRIES = new String[] {
"Belgium", "France", "Italy", "Germany", "Spain"
};
// In the onCreate method
AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, COUNTRIES);
textView.setAdapter(adapter);
}
}
activity_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" >
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:text="AutoCompleteTextView" >
<requestFocus />
</AutoCompleteTextView>
</LinearLayout>