Handles multiple display states for data-centric views

• Content state; shows the inner content of the View (as defined in XML)
• Loading state; shows a Loading state (as specified either via the loadingLayout attribute, or the default layout (res/layout/msv__loading.xml)

The following shows examples (using default layouts) for Loading, General Error, Network Error, and the Content states (where we've made the "Hello World" the content) in respective order.

• For whatever View you want to switch out with MultiStateView, wrap the View in a MultiStateView node.
• In code, get your reference to the child of MultiStateView via MultiStateView#getContentView() and cast that value as needed. There's no good reason to put an android:id on the child View.

Example

• Assuming you're starting with:

        <LinearLayout
            xmlns:android="https://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="vertical" >

            <ListView
                android:id="@+id/list"
                android:layout_width="fill_parent"
                android:layout_height="match_parent" />

        </LinearLayout>

• You should end up with something like:

        <LinearLayout
            xmlns:android="https://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="vertical" >

            <com.meetme.android.multistateview.MultiStateView
                android:id="@+id/list_container"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <ListView
                    android:layout_width="fill_parent"
                    android:layout_height="match_parent" />

            </com.meetme.android.multistateview.MultiStateView>

        </LinearLayout>

Example Notes 0. android:id="@+id/list" was moved from the ListView to the MultiStateView 0. It was also renamed to list_container to note that it now is the parent of the ListView 0. Any references in code should now use MultiStateView#getContentView() casted to ListView to reference the ListView child. There's no good reason to put an id on the ListView. See below.

• In code,

ListView list = (ListView) findViewById(R.id.list);

• Becomes

MultiStateView container = (MultiStateView) findViewById(R.id.list_container);
ListView list = (ListView) container.getContentView();

• To control the state of the MultiStateView, use the MultiStateView#setState(State) method.

container.setState(State.LOADING);

• By default, "Loading" indication uses the loading layout provided in the library (res/layout/msv__loading.xml). To customize, you can add the custom attribute msvLoadingLayout to the MultiStateView in XML with a reference to the layout to inflate.

• Dallas Gutauckis

Apache 2.0

Copyright 2013 MeetMe, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
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