android第八节自动匹配输入内容

AutoCompleteTextView

动态匹配输入的内容

属性：

android:completionThreshold = “2”

输入多少个字符时自动匹配

操作

首先拖拉控件

然后初始化控件

 private AutoCompleteTextView ac;
  ac = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);

需要一个适配器

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
         android.R.layout.simple_list_item_1,res);

初始化数据源：数据源匹配文本框中的内容

需要一个数组

private String[] res = {"早春", "早晨", "早安", "早上好", "晚上", "晚宴", "晚风"};

将adapter 与当前控件绑定

ac.setAdapter(adapter);

MultiAutoCompleteTextView

步骤差不多，就多了一个分隔符

 mac.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());

以逗号结尾可以再输入。

完整代码

• layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:orientation = "vertical" tools:context="com.example.demo8.MainActivity">


    <AutoCompleteTextView  android:layout_width="match_parent" android:layout_height="wrap_content" android:completionThreshold="1" android:hint="请输入你要搜索的词(auto)" android:id="@+id/autoCompleteTextView" />

    <MultiAutoCompleteTextView  android:layout_width="match_parent" android:layout_height="wrap_content" android:completionThreshold="1" android:hint="请输入你要搜索的词(Multiauto)" android:id="@+id/multiAutoCompleteTextView" />
</LinearLayout>

• java

package com.example.demo8;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.MultiAutoCompleteTextView;

public class MainActivity extends AppCompatActivity {
    private String[] res = {"早春", "早晨", "早安", "早上好", "晚上", "晚宴", "晚风"};
    private AutoCompleteTextView ac;
    private MultiAutoCompleteTextView mac;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ac = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1,res);
        ac.setAdapter(adapter);

        mac = (MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView);
        mac.setAdapter(adapter);
        mac.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
    }
}

结果图