可折叠的ToolBar+抽屉菜单NavigationView+浮动按钮FloatButton
使用Material Design风格的ToolBar和抽屉导航
先看个简单的运行效果
主要记录下布局的写法
1 用到的Google Design依赖和V7包依赖
compile 'com.android.support:cardview-v7:25.0.0'
compile 'com.android.support:recyclerview-v7:25.0.0'
compile 'com.android.support:design:25.0.0'
compile 'com.android.support:appcompat-v7:25.0.0'
2 主布局结构
3 主布局内容
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--CoordinatorLayout 布局属性:FrameLayout-->
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--AppBar 布局属性:LinearLayout 默认子元素垂直排列-->
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="200dp"
android:fitsSystemWindows="true">
<!--提供了一个可以折叠的Toolbar 布局属性:FrameLayout-->
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimary"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.5" />
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
app:contentInsetStart="0dp"
app:layout_collapseMode="pin"
app:title="@string/app_name" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/divider"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
<!--Float Button-->
<android.support.design.widget.FloatingActionButton
android:id="@+id/float_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginBottom="10dp"
android:layout_marginEnd="10dp"
android:src="@drawable/ic_action_important"
app:elevation="10dp" />
</FrameLayout>
<!--左侧抽屉-->
<android.support.design.widget.NavigationView
android:id="@+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/layout_navigation_header_main"
app:menu="@menu/main_navigation">
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
4 抽屉导航头布局内容 (layout_navigation_header_main.xml)
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="@color/colorAccent">
<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>
5 界面逻辑很简单，给RecyclerView绑定数据，抽屉菜单的打开关闭(MainActivity内容)
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);
//设置ToolBar作为ActionBar
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
//设置ActionBar左上角按钮
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;
}
}
}
6 总结
- Google提供的抽屉菜单(NavigationView)确实方便了许多，可以直接通过设置Menu资源作为抽屉菜单的菜单项，可以直接设置layout作为抽屉菜单的头部
- 可折叠的ToolBar
(**CoordinatorLayout + AppBarLayout + CollapsingToolbarLayout + Toolbar **)使嵌套滚动的实现变得容易 - 浮动按钮(FloatActionButton)也是方便了实现material design风格
源码虽简，还是也放到GitHub上了_
