DetailActivity.java

package com.tabmodule;

import android.graphics.Color;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Gravity;
import android.view.View;


public class DetailActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_detail);
        init();
    }

    private void init() {
        initToolBar();
    }

    private void initToolBar() {
     ;
        final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        CollapsingToolbarLayout collapsingToolbar =
                (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        collapsingToolbar.setTitle("省道爱迪生");
        collapsingToolbar.setExpandedTitleColor(Color.WHITE);//设置展开后标题的颜色
        collapsingToolbar.setCollapsedTitleTextColor(Color.WHITE);//设置收缩后标题的颜色
    }
}