带有下拉列表的android edittext

Question

我有一个从用户那里获取值的编辑文本。我想添加一个选项，允许用户在单击编辑文本时通过下拉列表从不同的选项中进行选择。有谁知道如何做到这一点？

这是编辑文本代码:

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:inputType="textPersonName"
    android:ems="10"
    android:id="@+id/dish_quantity"
    android:layout_below="@+id/dish_name"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:hint="Quantity" />

我希望它看起来像这样:

Answer 1

我认为这是你的要求:

只要按照这个例子: 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="fill_parent"
    >   
<AutoCompleteTextView
    android:id="@+id/languages"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"></AutoCompleteTextView>
</LinearLayout>

Activity :-

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class MainActivity extends Activity {

    String[] languages = { "C","C++","Java","C#","PHP","JavaScript","jQuery","AJAX","JSON" };

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
                //Create Array Adapter
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.select_dialog_singlechoice, languages);
                //Find TextView control
        AutoCompleteTextView acTextView = (AutoCompleteTextView) findViewById(R.id.languages);
        //Set the number of characters the user must type before the drop down list is shown
                acTextView.setThreshold(1);
                //Set the adapter
        acTextView.setAdapter(adapter);
    }
}

演示:-