Android常用控件之AutoCompleteTextView、Spinner

概述

1、AutoCompleteTextView：相对于普通的TextView，AutoCompleteTextView的特点是可以自动提示文本，它可以通过SetAdapter()方法加载适配器。

2、Spinner：一种下拉列表。

知识内容

AutoCompletedTextView

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:tools="http://schemas.android.com/tools"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:paddingLeft="@dimen/activity_horizontal_margin"
                android:paddingRight="@dimen/activity_horizontal_margin"
                android:paddingTop="@dimen/activity_vertical_margin"
                android:paddingBottom="@dimen/activity_vertical_margin"
                tools:context=".MainActivity">

    <AutoCompleteTextView
        android:id="@+id/auto_complete_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="#2af"/>

</RelativeLayout>

java部分

public class MainActivity extends Activity {
    private AutoCompleteTextView mCompleteTextView;
    private ArrayAdapter<String> mArrayAdapter;
    private String[] mData = {"layout_linear","layout_relative","layout_absolute","text_view","button_image","button_radio"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.spinner_layout);

        mCompleteTextView = (AutoCompleteTextView)findViewById(R.id.auto_complete_textview);
        mArrayAdapter = new ArrayAdapter<String>(this,android.R.layout.test_list_item,mData);
        mCompleteTextView.setAdapter(mArrayAdapter);
    }

}

结果演示：

Spinner

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </Spinner>
</LinearLayout>

java部分

public class MainActivity extends Activity {

    private Spinner mSpinner;

    private String[] mData = {"layout_linear","layout_relative","layout_absolute","text_view","button_image","button_radio"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSpinner = (Spinner)findViewById(R.id.spinner);
        mSpinner.setAdapter(mArrayAdapter);
    }

}

结果演示

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