day03通知

day04通知

  NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        Notification.Builder builder = new Notification.Builder(this);
        builder.setSmallIcon(R.mipmap.ic_launcher_round);
        builder.setContentTitle("我是标题");
        builder.setContentText("我是内容");
        builder.setTicker("我是提示信息");
        builder.setContentInfo("我是附加内容");

        //设置通知自动消失
        builder.setAutoCancel(true);
        //设置通知的来电效果  振动 音效 灯光  振动需要加权限
        builder.setDefaults(Notification.DEFAULT_ALL);

        Intent intent = new Intent(MainActivity.this,Main2Activity.class);
        //设置跳转 进入到第二个界面
        PendingIntent activity = PendingIntent.getActivity(this, 101, intent, PendingIntent.FLAG_ONE_SHOT);
        builder.setContentIntent(activity);

        manager.notify(1,builder.build());

自定义通知

 NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        Notification.Builder builder = new Notification.Builder(this);
        //必须设置一个小图标
        builder.setSmallIcon(R.drawable.qqyinle);
        RemoteViews remoteViews = new RemoteViews(getPackageName(),R.layout.activity3_main);

 remoteViews.setTextViewText(R.id.tv1,"绅士");

        builder.setContent(remoteViews);

        manager.notify(1,builder.build());
        
//XML文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">

  <ImageView
          android:id="@+id/iv"
          android:src="@drawable/qqyinle"
          android:layout_width="50dp"
          android:layout_height="70dp"/>
  <TextView
          android:textColor="#000"
          android:id="@+id/tv1"
          android:text="意外"
          android:gravity="center"
          android:textSize="10dp"
          android:layout_width="200dp"
            android:layout_height="20dp"/>
  <TextView
          android:id="@+id/tv2"
          android:textColor="#000"
          android:text="薛之谦"
          android:gravity="center"
          android:textSize="10dp"
          android:layout_marginTop="15dp"
          android:layout_marginLeft="-200dp"
          android:layout_width="200dp"
          android:layout_height="20dp"/>
  <Button
          android:background="@drawable/kuaijin2"
          android:gravity="center"
          android:textSize="20dp"
          android:layout_marginTop="45dp"
          android:layout_marginLeft="-130dp"
          android:layout_width="20dp"
          android:layout_height="20dp"/>
  <Button
          android:background="@drawable/kuaijin3"
          android:gravity="center"
          android:textSize="20dp"
          android:layout_marginTop="45dp"
          android:layout_marginLeft="0dp"
          android:layout_width="20dp"
          android:layout_height="20dp"/>
  <Button
          android:background="@drawable/kuaijin"
          android:gravity="center"
          android:textSize="20dp"
          android:layout_marginTop="45dp"
          android:layout_marginLeft="0dp"
          android:layout_width="20dp"
          android:layout_height="20dp"/>

</LinearLayout>

进度条通知

 final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        final Notification.Builder builder = new Notification.Builder(this);

        builder.setSmallIcon(R.drawable.qqyinle);

        final Timer timer=new Timer();
        timer.schedule(new TimerTask() {
            int progress =0;
            @Override
            public void run() {
                builder.setProgress(100,progress+=10,false);
                manager.notify(3,builder.build());
                if (progress==100){
                    builder.setProgress(100,100,true);
                    manager.notify(3,builder.build());
                    try {
                        Thread.sleep(2000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
				//吐司的消息通过handler发送消息
                    Message message = Message.obtain();
                    message.what=1000;
                    message.obj="安装完成";
                    MainActivity.this.handler.sendMessage(message);

                    manager.cancel(3);
                    timer.cancel();


                }

            }
        },0,1000);

//接收消息进行吐司
 Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if (msg.what==1000){
                String str = (String)msg.obj;
                Toast.makeText(MainActivity.this,str+"",Toast.LENGTH_LONG).show();
            }
        }
    };

按两次返回键推出

 @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode==KeyEvent.KEYCODE_BACK){
            long l = System.currentTimeMillis();
            if ((l-pre)<=1000){
                pre=l;
                finish();

            }else {
                pre=l;
                Toast.makeText(this, "再按一次推出", Toast.LENGTH_SHORT).show();
                return false;
            }

        }
        return super.onKeyDown(keyCode, event);
    }