我试图将FAB与导航抽屉和片段内容一起使用，这些内容随导航菜单中的onitemClcik（）而变化
但是在点击任何项目并执行replace（）片段之后我得到银行屏幕
课程：
public class SubTaB extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener , ObservableScrollViewCallbacks {
@Bind(R.id.list_view)
ObservableListView mObservableListView;
@Bind(R.id.fabtoolbar)
FabToolbar mFabToolbar;
@Bind(R.id.fab)
android.support.design.widget.FloatingActionButton mFab;
@Bind(R.id.ic_call)
ImageView mIcCall;
@Bind(R.id.ic_email)
ImageView mIcEmail;
@Bind(R.id.ic_forum)
ImageView mIcForum;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sub_ta_b);
final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
ButterKnife.bind(this);
initListView();
mFabToolbar.setFab(mFab);
}
private void initListView() {
List<String> list = new ArrayList<String>(100);
for (int i = 0; i < 100; i++) {
list.add("Item " + i);
}
// ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_1, list);
// mObservableListView.setAdapter(adapter);
mObservableListView.setScrollViewCallbacks(this);
}
@Override
public void onScrollChanged(int i, boolean b, boolean b1) {
}
@Override
public void onDownMotionEvent() {
}
@Override
public void onUpOrCancelMotionEvent(ScrollState scrollState) {
Log.d("","Scroll scroll scroll");
if (scrollState == ScrollState.UP) {
mFabToolbar.slideOutFab();
} else if (scrollState == ScrollState.DOWN) {
mFabToolbar.slideInFab();
}
}
@OnClick(R.id.fab)
void onFabClick() {
mFabToolbar.expandFab();
}
@OnClick(R.id.call)
void onClickCall() {
iconAnim(mIcCall);
}
@OnClick(R.id.ic_email)
void onClickEmail() {
iconAnim(mIcEmail);
}
@OnClick(R.id.ic_forum)
void onClickForum() {
iconAnim(mIcForum);
}
private void iconAnim(View icon) {
Animator iconAnim = ObjectAnimator.ofPropertyValuesHolder(
icon,
PropertyValuesHolder.ofFloat("scaleX", 1f, 1.5f, 1f),
PropertyValuesHolder.ofFloat("scaleY", 1f, 1.5f, 1f));
iconAnim.start();
}
///////////////////////////////////////
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.sub_ta_b, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// mFabToolbar.slideOutFab();
// Handle navigation view item clicks here.
int id = item.getItemId();
Fragment newFragment= null;
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
//
if (id == R.id.nav_camera) {
newFragment = new OneFragment();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, newFragment);
fragmentTransaction.commit();
} else if (id == R.id.nav_gallery) {
newFragment = new DashDetails();
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack("TAG");
transaction.commit();
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
XML layot：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/fragment_container2"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/MyMaterialTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/MyMaterialTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:id="@+id/fragment_container"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
layout="@layout/FAB" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_sub_ta_b"
app:menu="@menu/activity_sub_ta_b_drawer" />
答案 0 :(得分：1)
您的活动布局有点奇怪。您应该有一个根父布局，例如CoordinatorLayout。
但是，您的XML布局没有根布局，LinearLayouts都是兄弟。
我注意到的另一件事是FAB周围的LinearLayout是替换片段时替换的那个。这是错的。移除FAB周围的LinearLayout并添加FrameLayout id=fragment_container。
布局结构可能如下所示
<CoordinatorLayout>
<AppBarLayout>
<Toolbar/>
//... other layouts here
</AppBarLayout>
<FrameLayout
android:id="@+id/fragment_container"/>
//... rest of your layout here
<FloatingActionButton android:gravity="bottom|end" />
</CoordinatorLayout>