public class MainActivity extends Activity {
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main)

            final GoodView goodView = new GoodView(this);
            Button button = new Button(this);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    goodView.setText("+1");
                    goodView.show(v);
                }
            });

        }
    }

Copyright (C) 2016 venshine.cn@gmail.com

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.