问题
Toolbar is not appearing on pre lollipop devices. I'm using drawer layout with toolbar. The same toolbar works on other activities but not when used along with drawer layout.
Activity with drawer layout and toolbar
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_screen);
{
/*supportChatImageButton = (ImageButton) findViewById(R.id.homeSupportChatImageButton);
orderImageButton = (ImageButton) findViewById(R.id.homeOrderImageButton);*/
headerTextView = (TextView) findViewById(R.id.homeHeaderTextView);
slidingTabLayout = (SlidingTabLayout) findViewById(R.id.homeSlidingTabLayout);
viewPager = (ViewPager) findViewById(R.id.homeViewPager);
headerBackgroundImageView = (ImageView)findViewById(R.id.homeHeaderBackgroundImageView);
mainContentLayout = (FrameLayout) findViewById(R.id.homeScreenMainContentLayout);
hamburgerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
hamburgerLinearLayout = (LinearLayout) findViewById(R.id.hamburgerProfileLayout);
hamburgerListView = (ListView) findViewById(R.id.hamburgerListView);
hamburgerMenu = (RelativeLayout) findViewById(R.id.hamburgerMenu);
GetHamburgerListItems();
HamburgerListAdapter hamburgerListAdapter = new HamburgerListAdapter(this, hamburgerListItems);
hamburgerListView.setAdapter(hamburgerListAdapter);
userProfileImageView = (ImageView) findViewById(R.id.userProfileImageView);
userProfileNameTextView = (TextView) findViewById(R.id.userProfileNameTextView);
if(StorageManager.read(this, "userProfile", new TypeToken<UserProfile>() {}.getType()) != null) {
UserProfile userProfile = (UserProfile) StorageManager.read(this, "userProfile", new TypeToken<UserProfile>() {}.getType());
userProfileNameTextView.setText(userProfile.getFullName());
}
else {
userProfileNameTextView.setText("Login / Sign up");
}
Typeface typeface = Typeface.createFromAsset(this.getAssets(), "fonts/GothamRnd-Medium.otf");
slidingTabLayout.setTypeface(typeface);
slidingTabLayout.setTextColor("#FFFFFF");
}
if(Utilities.IsCitySelected(this)) {
selectedCity = Utilities.GetSelectedCity(this);
}
else {
Intent intent = new Intent(HomeScreenActivity.this, ErrorInternetActivity.class);
intent.putExtra("error", "error");
startActivity(intent);
finish();
}
toolbar = (Toolbar) findViewById(R.id.main_toolbar);
toolbar.setNavigationIcon(R.drawable.ic_action_image_dehaze);
toolbar.inflateMenu(R.menu.home_screen_menu);
toolbar.setBackgroundColor(Color.TRANSPARENT);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, hamburgerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu();
syncState();
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
invalidateOptionsMenu();
syncState();
}
};
hamburgerLayout.setDrawerListener(actionBarDrawerToggle);
hamburgerLayout.setDrawerListener(this);
hamburgerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
publ
ic void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
SelectItemFromDrawer(position);
}
});
hamburgerLinearLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(Utilities.IsUserLoggedIn(HomeScreenActivity.this)) {
hamburgerLayout.closeDrawer(hamburgerMenu);
isLinkClicked = true;
position = 2;
}
else {
hamburgerLayout.closeDrawer(hamburgerMenu);
isLinkClicked = true;
position = 3;
}
}
}
});
Activity - XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".HomeScreenActivity">
<FrameLayout
android:id="@+id/homeScreenMainContentLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
layout="@layout/main_toolbar"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.6">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/homeHeaderBackgroundImageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="42dp"
android:layout_alignParentTop="true"
android:layout_marginTop="12dp"
android:gravity="right">
<!--<ImageButton
android:id="@+id/homeSupportChatImageButton"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginRight="20dp"
android:background="@drawable/ic_help"
android:visibility="visible" />
<ImageButton
android:id="@+id/homeOrderImageButton"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginRight="16dp"
android:background="@drawable/ic_menu_orders" />-->
</LinearLayout>
<com.misc.TextView
android:id="@+id/homeHeaderTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:text="@string/home_screen_header_text"
android:textColor="@color/white"
android:textSize="24sp"
android:textStyle="bold"
app:fontName="@string/gotham_bold_reg" />
<com.misc.SlidingTabLayout
android:id="@+id/homeSlidingTabLayout"
fontPath="fonts/GothamRnd-Medium.otf"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:paddingTop="10dp"></com.misc.SlidingTabLayout>
</RelativeLayout>
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.40"
android:background="#FFFFFF">
<android.support.v4.view.ViewPager
android:id="@+id/homeViewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"></android.support.v4.view.ViewPager>
</LinearLayout>
</LinearLayout>
</FrameLayout>
<!-- The navigation drawer -->
<RelativeLayout
android:id="@+id/hamburgerMenu"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start">
<!-- Profile Box -->
<LinearLayout
android:id="@+id/hamburgerProfileLayout"
android:layout_width="match_parent"
android:layout_height="144dp"
android:background="@color/lo_orange"
android:gravity="center_vertical"
android:orientation="vertical">
<ImageView
android:id="@+id/userProfileImageView"
android:layout_width="56dp"
android:layout_height="56dp"
android:layout_marginLeft="16dp"
android:scaleType="fitXY"
android:src="@drawable/ic_person_blue" />
<com.misc.TextView
android:id="@+id/userProfileNameTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginLeft="16dp"
app:fontName="@string/gotham_medium_reg"
android:textSize="14sp"
android:text=""
android:textColor="#FFFFFF"/>
</LinearLayout>
<!-- List of Actions (pages) -->
<ListView
android:id="@+id/hamburgerListView"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_below="@id/hamburgerProfileLayout"
android:background="#FFFFFF"
android:choiceMode="singleChoice" />
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
main_toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/lo_orange"
android:minHeight="?attr/actionBarSize"
android:fitsSystemWindows="true"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
android:elevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<com.misc.TextView
android:id="@+id/toolBarTitleTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:fontName="@string/gotham_medium_reg"
android:maxLines="2"
android:textSize="16sp"
android:textColor="#FFFFFF"/>
<com.misc.TextView
android:id="@+id/toolBarSubTitleTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:fontName="@string/gotham_light_reg"
android:maxLines="1"
android:textSize="12sp"
android:visibility="gone"
android:textColor="#FFFFFF"/>
</LinearLayout>
</android.support.v7.widget.Toolbar>
style.xml
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="android:textColorHintInverse">@color/lo_orange</item>
<!--<item name="colorPrimaryDark">@color/dark_orange</item>-->
<item name="colorPrimary">@color/lo_orange</item>
<item name="colorAccent">@color/lo_orange</item>
<!-- API 14 theme customizations can go here. -->
<item name="android:windowActionBarOverlay">true</item>
<!-- Support library compatibility -->
<item name="windowActionBarOverlay">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
</style>
回答1:
This is a common issue becoming less apparent when testing on Lollipop or later.
When using standard layouts (such as FrameLayout, RelativeLayout etc.) the default behavior is that child views get drawn in order they are added or inflated.
The fix would look similar to this:
<FrameLayout>
<!-- Content will be drawn first - below the toolbar. -->
<FrameLayout android:id="@+id/main_content" />
<!-- Toolbar will be drawn next - above the content. -->
<android.support.v7.widget.Toolbar android:id="@+id/toolbar" />
</FrameLayout>
However since Lollipop the android:elevation attribute can override this behavior. Since elevation defines precise position along the Z axis views with higher elevation values will be drawn above those with lower elevation values.
来源：https://stackoverflow.com/questions/32668480/toolbar-not-appearing-in-pre-lollipop-devices