字体的自动补全功能

来源：互联网发布：原生js实现的效果编辑：程序博客网时间：2024/04/30 09:43

实现字体的自动补全功能，效果图如下：
这里写图片描述
JAVA代码

package com.example.days04autocompletetextview0001;import android.app.Activity;import android.os.Bundle;import android.text.Editable;import android.text.TextWatcher;import android.view.Menu;import android.view.MenuItem;import android.widget.ArrayAdapter;import android.widget.AutoCompleteTextView;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {    private AutoCompleteTextView actv;    private EditText et=null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        actv=(AutoCompleteTextView) findViewById(R.id.actv);        String str [] ={"abc" ,"beidjfa" ,"qwlekrj;","bvvvvvvvvvv","cccccccccc","ddddddddd"};        ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,str);        actv.setAdapter(adapter);        actv.addTextChangedListener(new TextWatcher() {            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {                Toast.makeText(MainActivity.this, "文字改变了", Toast.LENGTH_SHORT).show();            }            @Override            public void beforeTextChanged(CharSequence s, int start, int count,                    int after) {                Toast.makeText(MainActivity.this, "文字改变了前", Toast.LENGTH_SHORT).show();            }            @Override            public void afterTextChanged(Editable s) {                Toast.makeText(MainActivity.this, "文字改变了后", Toast.LENGTH_SHORT).show();            }        });    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

Xml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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.phone1000.days04uiautocompletetextview.MainActivity" >    <TextView        android:id="@+id/txt_show"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <AutoCompleteTextView        android:id="@+id/act_city"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@+id/txt_show" /></RelativeLayout>

0 0