Android开发中使用BadgeView实现一个红点更新信息提示功能

compile files('libs/badgeview.jar') 

BadgeView badgeView1 = new com.jauker.widget.BadgeView(this); 
badgeView1.setTargetView(mTipText1); 
badgeView1.setBadgeCount(3); 

BadgeView badgeView2 = new BadgeView(this); 
badgeView2.setTargetView(mTipText2); 
badgeView2.setBackground(12, Color.parseColor("#9b2eef")); 
badgeView2.setText("提示"); 

BadgeView badgeView3 = new BadgeView(this); 
badgeView3.setTargetView(mTipText3); 
badgeView3.setBadgeGravity(Gravity.TOP | Gravity.LEFT); 
badgeView3.setTypeface(Typeface.create(Typeface.SANS_SERIF, 
  Typeface.ITALIC)); 
badgeView3.setShadowLayer(2, -1, -1, Color.GREEN); 
badgeView3.setBadgeCount(2); 

mTipText4.setOnClickListener(new View.OnClickListener() { 
 @Override 
 public void onClick(View view) { 
  TextView textview = (TextView) LayoutInflater 
    .from(MainActivity.this).inflate(R.layout.activity_main2, null).findViewById(R.id.id_activity2_textview); 
  textview.setText("100"); 
  startActivity(new Intent(MainActivity.this, MainActivity2.class)); 
 } 
});