这听起来很奇怪,因为小部件通常按其[[应]]工作。我有一个AutoCompleteTextView
,我想用城市名称列表进行填充。看起来很简单,但没有按我的意图工作。这是结果输出:
这里是图片的布局:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity1">
<AutoCompleteTextView
android:id="@+id/autocomptv_city_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="12dp"
android:layout_marginEnd="20dp"
android:layout_marginRight="20dp"
android:background="@drawable/bg_edittext_rect_opd"
android:hint="Select City"
android:text=""
android:inputType="text"
android:maxLines="1"
android:completionThreshold="0"
android:padding="10dp"
android:singleLine="true"
android:textColor="#000000"
android:textSize="15sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
下面是相同的Java代码:
public class MainActivity1 extends AppCompatActivity {
AutoCompleteTextView mAutCompleteTextViewSelfCity;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main1);
mAutCompleteTextViewSelfCity = ((AutoCompleteTextView) findViewById(R.id.autocomptv_city_list));
setupCityDropdownwidget();
}
private void setupCityDropdownwidget() {
Type listType = new TypeToken<List<CityName>>() {}.getType();
List<CityName> citiesList = Singletons.getGsonInstance().fromJson(TestData.cityDataJson, listType);
CityArrayAdapter adapter = new CityArrayAdapter(this, R.layout.item_spinner_city, citiesList);
mAutCompleteTextViewSelfCity.setAdapter(adapter);
adapter.notifyDataSetChanged();
mAutCompleteTextViewSelfCity.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
CityName selectedCitySelf = ((CityName) parent.getItemAtPosition(position));
mAutCompleteTextViewSelfCity.setText(selectedCitySelf.getCityName());
}
});
}
}
好吧,我希望视图显示为这样,只要用户点击它,它就会显示城市的下拉列表,并且当用户开始输入其城市进行过滤时,该视图会继续显示缩小的建议。] >问题:
当前,唯一可以建议的时间是当我键入内容并清空文本视图时。如果我将完成阈值更改为1,则不会显示任何建议。
我的代码怎么了?
这里是完整的参考来源:https://wetransfer.com/downloads/ce4017f5f2488288ef7494dc029e033420191019092536/7afa9a3e64afb257293533bd634d6c3220191019092536/dc2341这很奇怪,因为小部件通常会按预期工作。我有一个要用城市名称列表填充的AutoCompleteTextView。似乎很简单,但没有按我的预期工作...
adapter.notifyDataSetChanged();
,只需设置您的适配器,一切就可以了。