Android user input auto prompt control AutoCompleteTextView usage

• Android

1、 Introduction

1. The role of AutoCompleteTextView

2. Class structure diagram of AutoCompleteTextView

That is, it has various functions of EditText

3. How AutoCompleteTextView works

The auto prompt function of AutoCompleteTextView certainly requires the adapter to provide data

4. Adapter in Android

5. Adapter for AutoCompleteTextView

ArrayAdapter

2、 AutoCompleteTextView method for realizing automatic prompt

1) AutoCompleteTextView method for realizing automatic prompt

Step 1: create an adapter

String [] arr = {"Caesar", "Caesar square", "Caesar the great"}; ArrayAdapter<String> adapter= new ArrayAdapter<String>(this,R.layout.textview,arr);

Step 2: AutoCompleteTextView object application adapter

autoCompleteTextView1.setAdapter(adapter);

explain:

The prompt text is implemented by textview. The prompt data in the prompt text is string [] arr.

3、 Code example

code:

fry.Activity01

fry.Activity01

/AutoCompleteTextViewDemo1/res/layout/textview.xml

4、 Error prone point

1. This is the direct textview, not the textview under layout

/AutoCompleteTextViewDemo1/res/layout/textview.xml

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