带有下拉列表的android edittext

Question

我有一个edittext,它从用户那里获取值.我想添加一个选项,允许用户在单击edittext时通过下拉列表从不同选项中进行选择.有谁知道如何做到这一点？

这是edittext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:

只需按照这个例子: 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>

活动:-

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: -

Answer 2

活动_main.xml

<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    tools:context=".MainActivity" >  

    <TextView  
        android:id="@+id/textView1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignParentLeft="true"  
        android:layout_alignParentTop="true"  
        android:layout_marginTop="15dp"  
        android:text="@string/what_is_your_favourite_programming_language_" />  

    <AutoCompleteTextView  
        android:id="@+id/autoCompleteTextView1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignParentLeft="true"  
        android:layout_below="@+id/textView1"  
        android:layout_marginLeft="36dp"  
        android:layout_marginTop="17dp"  
        android:ems="10"  
        android:text="">  

        <requestFocus />  
    </AutoCompleteTextView>  

</RelativeLayout>

MainActivity.java

import android.os.Bundle;  
import android.app.Activity;  
import android.graphics.Color;  
import android.view.Menu;  
import android.widget.ArrayAdapter;  
import android.widget.AutoCompleteTextView;  

public class MainActivity extends Activity {  
    String[] language ={"C","C++","Java",".NET","iPhone","Android","ASP.NET","PHP"};  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  

        //Creating the instance of ArrayAdapter containing list of language names  
           ArrayAdapter<String> adapter = new ArrayAdapter<String>  
            (this,android.R.layout.select_dialog_item,language);  
        //Getting the instance of AutoCompleteTextView  
           AutoCompleteTextView actv= (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);  
           actv.setThreshold(1);//will start working from first character  
           actv.setAdapter(adapter);//setting the adapter data into the AutoCompleteTextView  
           actv.setTextColor(Color.RED);  

    }  

    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        // Inflate the menu; this adds items to the action bar if it is present.  
        getMenuInflater().inflate(R.menu.activity_main, menu);  
        return true;  
    }  

}  

Answer 3

我认为您正在寻找的内容可以使用Spinner而不是 EditText来完成。

这里有一个关于如何使用它的详细解释。

Answer 4

在 Android 上，它称为 autocompletetextview

谷歌官方文档： http://developer.android.com/reference/android/widget/AutoCompleteTextView.html

请查看这个教程 http://www.tutorialspoint.com/android/android_auto_complete.htm