学习使用MaterialDesign控件（四）Android实现标题栏自动缩放、放大效果

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//Toolbar
 Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
 setSupportActionBar(toolbar);
 getSupportActionBar().setDisplayHomeAsUpEnabled(true);
 toolbar.setNavigationOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View view) {
     onBackPressed();
   }
 });

//使用CollapsingToolbarLayout后，title需要设置到CollapsingToolbarLayout上
 CollapsingToolbarLayout collapsingToolbar = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
 collapsingToolbar.setTitle("失控");

//设置ViewPager
 mViewPager = (ViewPager) findViewById(R.id.viewpager);
 setupViewPager(mViewPager);

//给TabLayout增加Tab, 并关联ViewPager
 TabLayout tabLayout = (TabLayout) findViewById(R.id.sliding_tabs);
 tabLayout.addTab(tabLayout.newTab().setText("内容简介"));
 tabLayout.addTab(tabLayout.newTab().setText("作者简介"));
 tabLayout.addTab(tabLayout.newTab().setText("目录"));
 tabLayout.setupWithViewPager(mViewPager);