5月21日 课堂总结

Androidmanifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.administrator.testapp">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity" />
        <activity android:name=".test_activity6" />
        <activity android:name=".TestActivity7" />
        <activity android:name=".TestActivity8" />
        <activity android:name=".Main2Activity" />
        <activity android:name=".TestActivity9"></activity>
        <activity android:name=".TestActivity10">
        </activity>
        <activity android:name=".TestActivity11">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

activtiy_test11

<?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"
    tools:context="com.example.administrator.testapp.TestActivity11"
    android:orientation="vertical">

    <AutoCompleteTextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入"
        android:id="@+id/at_1"
        android:completionThreshold="1"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="学历:"/>
        <Spinner
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:id="@+id/sp_1">
    </Spinner>
    </LinearLayout>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="发送状态栏信息"
        android:onClick="bt_onclick"/>
</LinearLayout>

package com.example.administrator.testapp;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
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 TestActivity11 extends AppCompatActivity {

    AutoCompleteTextView at_1;
    Spinner sp_1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test11);

        at_1 = (AutoCompleteTextView)findViewById(R.id.at_1);
        sp_1 = (Spinner)findViewById(R.id.sp_1);

        //准备数据
        String[] strings = {"apple","abc","and","bea","china","car","dream","你好","呵呵","你们","呵呵哒"};
        //准备适配器
        ArrayAdapter<String> aa = new ArrayAdapter<String>(this,R.layout.array_adapter,strings);
        //给组件设置适配器
        at_1.setAdapter(aa);

        //下拉列表
        final String[] x1 = {"高中","专科","大学","本科","博士","硕士"};

        ArrayAdapter<String> sp = new ArrayAdapter<String>(this,R.layout.array_adapter,x1);

        sp_1.setAdapter(sp);
        
        //监听器
        sp_1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(TestActivity11.this, "选中的项目是:"+x1[position], Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                Toast.makeText(TestActivity11.this, "什么也没选", Toast.LENGTH_SHORT).show();
            }
        });
    }
    public void bt_onclick(View v)
    {
        //得到状态栏信息管理器
        NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        //准备pendingIntent
        //1-创建普通intent
        Intent intent = new Intent(this,TestActivity9.class);
        //2-生成
        PendingIntent pi = PendingIntent.getActivity(this, 0, intent, 0);
        //构建状态栏消息
        Notification nt =new Notification.Builder(this)
                .setContentTitle("天气预报")
                .setContentText("明天晴，气温39度")
                .setSmallIcon(R.drawable.f1)
                .setTicker("新的天气预报")
                .setDefaults(Notification.DEFAULT_SOUND)
                .setDefaults(Notification.DEFAULT_LIGHTS)
                .setDefaults(Notification.DEFAULT_VIBRATE)
                .setContentIntent(pi)
                .setAutoCancel(true)
                .build();
        //由管理器发送消息
        nm.notify(0,nt);
    }
}