android toolbar: how to have a toolbar with image in the background and menu items on top

问题

Using material design how to create a toolbar with background image.

the following is what i want:

I am trying the following code:

<?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/actionBar"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    app:contentInsetEnd="0dp"
    app:contentInsetStart="0dp" 
    android:minHeight="200dp">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imageViewplaces"
        android:src="@drawable/puri" 
        android:layout_gravity="center"/>

</android.support.v7.widget.Toolbar>

and what i am getting is:

回答1:

If you insist on using an ImageView over using the .setBackground(...) function.

You can try using a RelativeLayout with the Toolbar overlaying an ImageView like this:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/imageViewplaces"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:adjustViewBounds="true"
        android:src="@drawable/YOUR_IMAGE" />

    <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/toolbar_actionbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        >

    </android.support.v7.widget.Toolbar>


</RelativeLayout>

回答2:

Instead of adding an element with the image to the toolbar add the image as background of the toolbar, code below.

<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/actionBar"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    app:contentInsetEnd="0dp"
    app:contentInsetStart="0dp"
    android:background="@drawable/puri"
    android:minHeight="200dp">

    </android.support.v7.widget.Toolbar>

If you want to change it in java code, you can call toolbar.setBackground(ContextCompat.getDrawable(yourcontext, R.drawable/puri);

回答3:

A more proper solution would be to use an AppBarLayout:

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbarlayout"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    >
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="?android:attr/actionBarSize"
        android:src="@drawable/bg"
        android:scaleType="centerCrop"/>

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
    </RelativeLayout>
</android.support.design.widget.AppBarLayout>

来源：https://stackoverflow.com/questions/32607496/android-toolbar-how-to-have-a-toolbar-with-image-in-the-background-and-menu-ite