Java 在android中显示通知方法更改？

我在vogella网站上找到了这种方法。他们从main.xml文件中按钮的onclick属性调用此方法。有人知道，如何在不调用View的情况下将此方法更改为使用吗

public void createNotification(View view) {

    Intent intent = new Intent(this, Home.class);
    PendingIntent pIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent, 0);

    // Build notification
    // Actions are just fake
    Notification noti = new Notification.Builder(this)
            .setContentTitle("title")
            .setContentText("content").setSmallIcon(R.drawable.original_logo)
            .setContentIntent(pIntent)
            .addAction(R.drawable.original_logo, "Call", pIntent)
            .addAction(R.drawable.original_logo, "More", pIntent)
            .addAction(R.drawable.original_logo, "And more", pIntent).build();
    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    // hide the notification after its selected
    noti.flags |= Notification.FLAG_AUTO_CANCEL;

    notificationManager.notify(0, noti);

} 

这是我得到这个方法的地方的链接

我试过这样做。这是我对上述方法的编辑版本

public void createNotification(String title,String content) {
    // Prepare intent which is triggered if the
    // notification is selected
    Intent intent = new Intent(this, Home.class);
    PendingIntent pIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent, 0);

    // Build notification
    // Actions are just fake
    Notification noti = new Notification.Builder(this)
            .setContentTitle(title)
            .setContentText(content).setSmallIcon(R.drawable.original_logo)`enter code here`
            .setContentIntent(pIntent)
            .addAction(R.drawable.original_logo, "Call", pIntent)
            .addAction(R.drawable.original_logo, "More", pIntent)
            .addAction(R.drawable.original_logo, "And more", pIntent).build();
    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    // hide the notification after its selected
    noti.flags |= Notification.FLAG_AUTO_CANCEL;

    notificationManager.notify(0, noti);

}

然后我尝试调用这个编辑过的方法，如下所示

try {

        Double inc_val = Double.parseDouble(display_incamo.getText().toString());
        Double exp_val = Double.parseDouble(display_expamo.getText().toString());
        if(inc_val<exp_val){
            createNotification("Expenses are High","Your expenses are almost higher than income");
        }else{
            createNotification("Expenses are Low","Keep it up Buddy!!!");
        }

    }catch(Exception e){
        e.printStackTrace();
    }

试试看{
Double inc_val=Double.parseDouble（display_incamo.getText（）.toString（））；
Double exp_val=Double.parseDouble（display_expamo.getText（）.toString（））；
如果（inc_val尝试以下方法：

public void createNotification(View view) {

  showNotification("hello");
} 

public void showNotification(String msg)
{
  Intent intent = new Intent(this, Home.class);
    PendingIntent pIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent, 0);

    // Build notification
    // Actions are just fake
    Notification noti = new Notification.Builder(this)
            .setContentTitle("title")
            .setContentText(msg).setSmallIcon(R.drawable.original_logo)
            .setContentIntent(pIntent)
            .addAction(R.drawable.original_logo, "Call", pIntent)
            .addAction(R.drawable.original_logo, "More", pIntent)
            .addAction(R.drawable.original_logo, "And more", pIntent).build();
    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    // hide the notification after its selected
    noti.flags |= Notification.FLAG_AUTO_CANCEL;

    notificationManager.notify(0, noti);

}

好的，据我所知，您不希望有一个将
View
作为参数的方法，我查看了

我可以告诉你的是，本教程是为学习而编写的，所以作者希望你了解通知是如何发出的以及何时发出的，所以他制作了一个
clickListner
事件，该事件会侦听属性
中提到的按钮单击（android:onClick=“createNotification”）

只需删除view参数并调用createNotification（）；从您需要的任何位置。您可以将消息作为字符串参数添加。我尝试了这种方法，但出现了错误rahul。您尝试了什么？Post可能是您现在收到了与按钮单击相关的错误。由于我们删除了view参数，您一定收到了类似nosuchmethod异常的异常。但是您是否收到了一些exc接收或无异常，但未显示通知？
<Button
    android:id="@+id/button1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:onClick="createNotification"
    android:text="Create Notification" >
</Button>

Button my_button = (Button)findViewById(R.id.button1);
my_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // Now call any method which you want here or
            makeNotification();
        }
    });

makeNotification(){

 Intent intent = new Intent(this, Home.class);
PendingIntent pIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent, 0);

// Build notification
// Actions are just fake
Notification noti = new Notification.Builder(this)
        .setContentTitle("title")
        .setContentText("content").setSmallIcon(R.drawable.original_logo)
        .setContentIntent(pIntent)
        .addAction(R.drawable.original_logo, "Call", pIntent)
        .addAction(R.drawable.original_logo, "More", pIntent)
        .addAction(R.drawable.original_logo, "And more", pIntent).build();
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// hide the notification after its selected
noti.flags |= Notification.FLAG_AUTO_CANCEL;

notificationManager.notify(0, noti);

}