The constructor Intent(new View.OnClickListener(){}, Class) is undefined

对于错误The constructor Intent(new View.OnClickListener(){}, Class) is undefined解决办法：

首先源码：

Notification notification = new Notification(R.drawable.ic_launcher,"" + BMI,System.currentTimeMillis() );
			PendingIntent contentIndent = PendingIntent.getActivity(this, 0, new Intent(this,MainActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
			notificationManager.notify(0,notification);

或者是

 Intent intent = new Intent(this, ButtonStudyActivity.class);  

这里的this，在匿名类中通常是指的是这个匿名类，而不是activity，在indent中需要的是当前activity，所以修改后的代码应该是

 new Intent(MainActivity.this,MainActivity.class)

就可以解决