Android UI设计：Spinner

Spinner用于有下拉选框的界面，效果如下。

Spinner的使用方法与AutoCompleteTextView的使用方法相似

1、在layout中加控件。

2、在activity中加ArrayAdapter使用。

1、layout

<RelativeLayout 

xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" 

android:layout_width="match_parent"
    android:layout_height="match_parent" 

android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" 

tools:context=".MainActivity">
<Spinner
    android:id="@+id/spinner"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>


</RelativeLayout>

2、activity

package com.grid.administrator.mywidgeview;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Spinner;

public class MainActivity extends Activity {
    private Spinner mspinner;
    private ArrayAdapter adapter;
    private  String[] mData=

{"layout_linear","layout_relative","layout_frame","layout_table

","view_text","view_img","edit"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mspinner= (Spinner) findViewById(R.id.spinner);
        adapter=new ArrayAdapter

(this,android.R.layout.simple_list_item_1,mData);
        mspinner.setAdapter(adapter);

    }

}