android实现带下拉列表的文本框

android实现带下拉列表的文本框

keywords：android studio、EditText、ImageView、PopupMenu。

1. 布局

<TextView
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_marginTop="5dp"
               android:text="姓名"
               android:textSize="20sp"
               android:gravity="center"
               android:padding="20dp"/>
<EditText
               android:id="@+id/name_text"
               android:layout_width="0dp"
               android:layout_height="wrap_content"
               android:layout_weight="1"
               android:background="@null"
               android:height="35dp" />
<ImageView
               android:id="@+id/dropdown"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_gravity="center_vertical"
               android:layout_marginBottom="2dp"
               android:layout_marginTop="2dp"
               android:background="#D3D3D3"
               android:onClick="babyname_onClick"
               android:paddingRight="2dp"
               android:scaleType="fitXY"
               android:src="@drawable/dropdown"/>

2.menu定义–menu_name.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
   <item
       android:id="@+id/item01"
       android:orderInCategory="100"
       android:title="张三"/>
   <item
       android:id="@+id/item02"
       android:orderInCategory="101"
       android:title="李四"/>
</menu>

3.java代码

public class setinfo extends Activity {  
  public EditText  et;
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.setinfo);
      name_text=(EditText) findViewById(R.id.name_text);
      }
  public void babyname_onClick(View v) {
      PopupMenu pm=new PopupMenu(this, name_text);
      pm.getMenuInflater().inflate(R.menu.menu_name, pm.getMenu());
      pm.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
          @Override
          public boolean onMenuItemClick(MenuItem item) {
              name_text.setText(item.getTitle());
              return false;
          }
      });
      pm.show();
  }
  }