SwitchActivity.java

package yifeiyuan.practice.practicedemos.customview;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;

import butterknife.ButterKnife;
import butterknife.InjectView;
import yifeiyuan.practice.practicedemos.R;

public class SwitchActivity extends AppCompatActivity {

    @InjectView(R.id.toolbar)
    Toolbar mToolbar;
    @InjectView(R.id.face_view)
    FaceView mFaceView;
    @InjectView(R.id.fab)
    FloatingActionButton mFab;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_switch);
        ButterKnife.inject(this);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mFaceView.toogle();
//                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
//                        .setAction("Action", null).show();
            }
        });
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.d("MainActivity", " SwitchActivity onResume: ");
    }
}