1.相关属性: android:completionHint:设置下拉菜单中的提示标题 android:completionHintView:定义提示视图中显示下拉菜单 android:completionThreshold:指定用户至少输入多少个字符才会显示提示 android:dropDownAnchor:设置下拉菜单的定位"锚点"组件,如果没有指定改属性, 将使用该TextView作为定位"锚点"组件 android:dropDownHeight:设置下拉菜单的高度 android:dropDownWidth:设置下拉菜单的宽度 android:dropDownHorizontalOffset:指定下拉菜单与文本之间的水平间距 android:dropDownVerticalOffset:指定下拉菜单与文本之间的竖直间距 android:dropDownSelector:设置下拉菜单点击效果 android:popupBackground:设置下拉菜单的背景
实现代码: 这里的话就不自定义布局了,直接用ArrayAdapter来实现吧! 布局文件:activity_main.xml: <LinearLayout 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:orientation="vertical" tools:context=".MainActivity"> <AutoCompleteTextView android:id="@+id/atv_content" android:layout_width="match_parent" android:layout_height="48dp" android:completionHint="请输入搜索内容" android:completionThreshold="1" android:dropDownHorizontalOffset="5dp" /> <MultiAutoCompleteTextView android:id="@+id/matv_content" android:layout_width="match_parent" android:layout_height="48dp" android:completionThreshold="1" android:dropDownHorizontalOffset="5dp" android:text="" /> </LinearLayout> MainActivity.java: public class MainActivity extends AppCompatActivity { private AutoCompleteTextView atv_content; private MultiAutoCompleteTextView matv_content; private static final String[] data = new String[]{ "小猪猪", "小狗狗", "小鸡鸡", "小猫猫", "小咪咪" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); atv_content = (AutoCompleteTextView) findViewById(R.id.atv_content); matv_content = (MultiAutoCompleteTextView) findViewById(R.id.matv_content); ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity. this, android.R.layout.simple_dropdown_item_1line, data); atv_content.setAdapter(adapter); ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_dropdown_item_1line, data); matv_content.setAdapter(adapter); matv_content.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer()); } } 部分代码分析: android:completionThreshold="1":这里我们设置了输入一个字就显示提示 android:completionHint="请输入搜索内容":这是框框底部显示的文字,如果觉得丑 可以android:completionHintView设置一个View! android:dropDownHorizontalOffset="5dp":设置了水平边距为5dp matv_content.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer()); setTokenizer是为其设置分隔符