可折疊的ToolBar+抽屜菜單NavigationView+浮動按鈕FloatButton

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:drawablePadding="5dp"
    android:drawableStart="@mipmap/ic_launcher"
    android:gravity="center"
    android:text="@string/hello"
    android:textColor="@color/icons"
    android:textSize="20sp" />

</FrameLayout></code></pre>

5 界面邏輯很簡單，給RecyclerView綁定數據，抽屜菜單的打開關閉(MainActivity內容)

public class MainActivity extends AppCompatActivity {
    private final String[] data = {"Hello,Word!", 
            "Hello,Android!", "Hello,Material design!",
            "Hello,Word!", "Hello,Android!", "Hello,Material design!",
            "Hello,Word!", "Hello,Android!", "Hello,Material design!",
            "Hello,Word!", "Hello,Android!", "Hello,Material design!",
            "Hello,Word!", "Hello,Android!", "Hello,Material design!"};


private FloatingActionButton floatBtn;
private DrawerLayout drawerLayout;

@Override
protected void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    //設置ToolBar作為ActionBar
    setSupportActionBar(toolbar);
    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        //設置ActionBar左上角按鈕
        actionBar.setHomeAsUpIndicator(R.drawable.ic_nav);
        actionBar.setDisplayHomeAsUpEnabled(true);
    }
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_main);
    floatBtn = (FloatingActionButton) findViewById(R.id.float_btn);
    floatBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Toast.makeText(MainActivity.this, "Float Button", Toast.LENGTH_SHORT).show();
        }
    });

    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler);
    MyAdapter myAdapter = new MyAdapter();
    recyclerView.setAdapter(myAdapter);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater menuInflater = getMenuInflater();
    menuInflater.inflate(R.menu.main_menu, menu);
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
                drawerLayout.closeDrawers();
            } else {
                drawerLayout.openDrawer(GravityCompat.START);
            }
            break;
        case R.id.menu_1:
            Toast.makeText(MainActivity.this, item.getTitle(), Toast.LENGTH_SHORT).show();
            break;
    }
    return super.onOptionsItemSelected(item);
}

private class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

    class ViewHolder extends RecyclerView.ViewHolder {
        private TextView tv;

        ViewHolder(View itemView) {
            super(itemView);
            tv = (TextView) itemView.findViewById(R.id.tv);
        }

    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_list, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.tv.setText(data[holder.getAdapterPosition()]);
    }

    @Override
    public int getItemCount() {
        return data.length;
    }
}

}</code></pre> 
  
6 總結
 
  
 
   
Google提供的抽屜菜單(NavigationView)確實方便了許多，可以直接通過設置Menu資源作為抽屜菜單的菜單項，可以直接設置layout作為抽屜菜單的頭部
 
   
可折疊的ToolBar
 ( CoordinatorLayout + AppBarLayout + CollapsingToolbarLayout + Toolbar )使嵌套滾動的實現變得容易
 
   
浮動按鈕( FloatActionButton )也是方便了實現material design風格
 
  
 
  
 
 
  
來自：http://www.jianshu.com/p/eef5878a7627