我想创建EditText
,并在其下方单击可单击的菜单。用户应该能够将自己的自定义文本写入EditText
或从预定义选项中进行选择。
我虽然打算在recyclerView
下添加EditText
,但是对于4-5个选项,它浪费了recylerView
。有什么方法可以做得更好(我不想为此功能编写很多代码)。
答案 0 :(得分:0)
尝试一下, 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:gravity="center"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="State:" />
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
java
public class MainActivity extends AppCompatActivity {
AutoCompleteTextView autoCompleteTextView;
String[] arr={"used","new","repaired"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
autoCompleteTextView=findViewById(R.id.autoCompleteTextView);
ArrayAdapter aa=new ArrayAdapter(this,android.R.layout.simple_list_item_1,arr);
autoCompleteTextView.setAdapter(aa);
}
}
答案 1 :(得分:0)
AutoCompleteTextView是一个组件,用于在编写可编辑文本字段时显示建议。建议列表显示在下拉菜单中,用户可以从中选择所需的项目。建议列表是从适配器获得的,并且仅在阈值中指定的多个字符之后出现。
这是AutoCompleteTextView的简单示例:
<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">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="15dp"
android:text="X" />
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView"
android:layout_marginLeft="36dp"
android:layout_marginTop="17dp"
android:ems="10"
android:text="">
<requestFocus />
</AutoCompleteTextView>
</RelativeLayout>
MainActivity.java在下面定义。
public class MainActivity extends Activity {
String[] animals = {"Ant", "Bbird", "Cat"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Creating the instance of ArrayAdapter containing list of fruit names
ArrayAdapter<String> adapter = new ArrayAdapter<String>
(this, android.R.layout.select_dialog_item, animals);
//Getting the instance of AutoCompleteTextView
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
actv.setThreshold(1);//will start working from first character
actv.setAdapter(adapter);//setting the adapter data into the AutoCompleteTextView
actv.setTextColor(Color.BLACK);
}
}