<?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"

    tools:context="com.hanqi.test5.UIActivity7"

    android:orientation="vertical">

    <AutoCompleteTextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="自动完成的文本编辑框"

        android:id="@+id/actv_1"/>

    <Spinner

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/sp_1"></Spinner>

    <!--Spinner:下拉列表-->

    <Button

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="显示状态栏提示"

        android:onClick="notification_OnClick"/>

</LinearLayout>

package com.hanqi.test5;

import android.app.Notification;

import android.app.NotificationManager;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.Spinner;

import android.widget.Toast;

public class UIActivity7 extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_ui7);

        AutoCompleteTextView actv_1 = (AutoCompleteTextView)findViewById(R.id.actv_1);

        //设置自动完成的数据源

        String[] strings = {"China","Child","Chile","Chinese","Add","All","Class"};

        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.layout_array,strings);

        actv_1.setAdapter(arrayAdapter);

        //下拉列表

        Spinner sp_1 = (Spinner)findViewById(R.id.sp_1);

        sp_1.setAdapter(arrayAdapter);

        sp_1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

            @Override

            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

                Toast.makeText(UIActivity7.this, "position = " + position, Toast.LENGTH_SHORT).show();

            }

            @Override

            public void onNothingSelected(AdapterView<?> parent) {

                Toast.makeText(UIActivity7.this, "什么也没选", Toast.LENGTH_SHORT).show();

            }

        });

    }

    public void notification_OnClick(View v)

    {

        //获取状态栏消息管理器  产生状态栏提示

        NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);

        //构造状态栏消息

        Notification nt = new Notification.Builder(this)

                .setContentTitle("这是一条通知")

                .setContentText("这是通知内容:明天要休息了")

                .setTicker("显示在状态栏的新通知")

                .setSmallIcon(R.drawable.vipflower)

                .setAutoCancel(true)

                .setDefaults(Notification.DEFAULT_SOUND)

                .build();

        //交给管理器发通知

        nm.notify(0,nt);

    }

}