label,适用于添加一些标签 Label label = new Label(this); label.setText("POP"); label.setBackgroundColor(0xff03a9f4); // label.setTargetViewInBaseAdapter(findViewById(R.id.btn), 80,10, Label.Gravity.LEFT_TOP); label.setTargetView(findViewById(R.id.btn), 4, Label.Gravity.RIGHT_BOTTOM);