安卓在活动中创建通知，点击通知跳转到通知详情页面-CFANZ编程社区

先来看看效果

1.MainActivity.java ( android8.0开始引入了通知渠道的概念，也就是说每条通知都要属于一个对应的渠道，每个应用程序都考科一自由地创建当前应用拥有哪些通知渠道，但是这些通知渠道的控制权是掌握在用户手上的。

public class MainActivity extends Activity implements View.OnClickListener {
    private Button sendNotice;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        sendNotice = findViewById(R.id.send_notice);
        sendNotice.setOnClickListener(this);
    }
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.send_notice:
                //获取通知管理实例
                NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

                //8.0以后的通知渠道
                if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.O){
                    NotificationChannel channel=new NotificationChannel("important","Important",NotificationManager.IMPORTANCE_HIGH);
                    assert manager != null;
                    manager.createNotificationChannel(channel);
                }
                //通知点击事项
                Intent intent=new Intent(this,NotificationActivity.class);
                PendingIntent pendingIntent=PendingIntent.getActivity(this,0,intent,0);

                Notification notification= new NotificationCompat.Builder(this,"important")
                        .setContentTitle("收到一条通知")
                        .setContentText("你好")
                        .setSmallIcon(R.mipmap.ic_launcher)//通知图标
                        .setContentIntent(pendingIntent)//点击跳到通知详情
                        .setAutoCancel(true)//当点击通知后显示栏的通知不再显示
                        .build();
                assert manager != null;
                manager.notify(1,notification);
                break;
            default:
                break;
        }
    }
}

2.activity_main.xml

<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:orientation="vertical" >

       <Button
        android:id="@+id/send_notice"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Send notice"
        />
    </LinearLayout>

3.NotificationActivity.java

public class NotificationActivity extends AppCompatActivity {

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

4.activity_notification.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".NotificationActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:textSize="24sp"
        android:text="这是通知的具体内容"/>

</RelativeLayout>