Use of the "Notes" ListView

1.0 ListView Three elements

1.0.1 Creating basic steps

1. Create a ListView component in the layout file and declare the component in the activity.

2. In the activity, create a suitable adapter.

3. Use the Setadapter (Adapter Adapter) of the ListView to set the Adapter to be the ListView.

1.0.2 different adapter, different usages

1.ArrayAdapter

1.1 Creating Arrayadapter

Arrayadapter arrayadapter = new Arrayadapter (Context context,int layout,t[] data);

1.1.1 Parameter Introduction

Context: Contexts

Layout: Layouts Resource ID

Data: A DataSet (that is, the data that will be displayed on each item on the ListView, in the constructor of Arrayadapter, is a generic array)

1.1.2 Using Arrayadapter

You can use Listview.setadapter (arrayadapter).

The 1.1.3 Arrayadapter is a very simple data adapter. Here is a rough introduction.

2.SimpleAdapter

2.1 Creating Simpleadapter

Simpleadapter simpleadapter = new Simpleadapter (Context context,list list,int layout,string[] key,int[] ID);

2.2.1 Parameter Introduction

Context: Contexts

List: Data collection, general use arraylist

Layout:item Layout Resource ID

Key:map inside the corresponding key

Id:layout each component ID (must correspond to key one by one, position relative)

2.2.2 Initialization parameters

List: Use Map.put ("key", corresponding resource ID);

Layout: A custom item layout resource;

Key:new string[]{"Key01", "key02"};

Id:new INT[]{ID01,ID02};

2.2.3 using Simpleadapter

You can use Listview.setadapter (simpleyadapter).

Use of the "Notes" ListView