AutoCompleteTextView和Spinner的用法

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首先说明AutoCompleteTextView的用法，主要是起到自动填充的作用，输入关键字，如果存在该字便可以自动填充。代码如下

activity_main.xml

<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">    <AutoCompleteTextView        android:id="@+id/autotextview"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:completionHint="请选择喜欢的图书"        android:textColor="#000000"        android:completionThreshold="1"        />    <Button        android:id="@+id/btn_spinner"        android:layout_centerVertical="true"        android:layout_centerHorizontal="true"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Spinner 界面"/></RelativeLayout>

MianActivity.java

package lzl.edu.com.autocomplete;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.ArrayAdapter;import android.widget.AutoCompleteTextView;import android.widget.Button;public class MainActivity extends Activity {    private AutoCompleteTextView autoTextView;    private Button btn_spinner;    String[] books = {"从你的全世界路过","荆棘鸟","老人与海","第一行代码","我们从未陌生过"};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        autoTextView = (AutoCompleteTextView)findViewById(R.id.autotextview);        btn_spinner = (Button)findViewById(R.id.btn_spinner);        // android.R.layout.simple_dropdown_item_1line 系统提供的自动填充的方法。        ArrayAdapter<String> aa = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,books);        autoTextView.setAdapter(aa);        btn_spinner.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent = new Intent(MainActivity.this,BookeSpinner.class);                startActivity(intent);            }        });    }}

Spinner通常和arrays.xml结合集合使用，在value文件夹下创建arrays.xml文件。

<?xml version="1.0" encoding="utf-8"?><resources>    <string-array name="books">        <item>从你的全世界路过</item>        <item>你好,世界</item>        <item>JAVA疯狂讲义</item>        <item>第一行代码</item>        <item>荆棘鸟</item>    </string-array></resources>

在xml文件中建立Spinner标签

<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="lzl.edu.com.autocomplete.BookeSpinner">    <Spinner        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:entries="@array/books"        >    </Spinner></RelativeLayout>

Activity中加入布局就可以了

package lzl.edu.com.autocomplete;import android.app.Activity;import android.os.Bundle;public class BookeSpinner extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_booke_spinner);    }}

Spinnner结合Adapter的使用

BooksActivity.java

package lzl.edu.com.autocomplete;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Spinner;import android.widget.TextView;public class BookeSpinner extends Activity {    Spinner spinnerbooks;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_booke_spinner);        spinnerbooks = (Spinner)findViewById(R.id.spinnerbooks);        BaseAdapter ba = new BaseAdapter() {            @Override            public int getCount() {                return 100;            }            @Override            public Object getItem(int position) {                return position;            }            @Override            public long getItemId(int position) {                return position;            }            @Override            public View getView(int position, View convertView, ViewGroup parent) {            TextView textView = new TextView(BookeSpinner.this);                textView.setText("第"+position+"本书");                textView.setTextColor(Color.rgb(240, 200, 100));                textView.setTextSize(20);                return textView;            }        };        spinnerbooks.setAdapter(ba);    }}

xml布局文件

<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="lzl.edu.com.autocomplete.BookeSpinner">    <Spinner        android:id="@+id/spinnerbooks"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        >    </Spinner></RelativeLayout>

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