Android基础控件AutoCompleteTextView的使用

1.简单介绍

AutoCompleteTextView有点像EditText和Spinner的组合。所以使用AutoCompleteTextView和使用Spinner差不多，用ArrayAdapter即可。如果对ArrayAdapter还不了解，可以参考Spinner的使用。
显示效果
xml属性

2.简单使用

item_dropdown.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="40dp"
    android:id="@+id/tv_week"
    android:singleLine="true"
    android:gravity="center"
    android:textSize="18sp"
    android:textColor="#000000">
</TextView>

activity_auto_complete_text_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".AutoCompleteTextViewActivity">

    <AutoCompleteTextView
        android:id="@+id/auto_tv_demo"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:completionThreshold="1"
        android:completionHint="相关词语"
        />
</LinearLayout>

AutoCompleteTextViewActivity.java

package xyz.strasae.androidlearn.my;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class AutoCompleteTextViewActivity extends AppCompatActivity {
    AutoCompleteTextView autoCompleteTextViewDemo;
    private String[] mStrs = {"好", "不好", "好多了", "你好", "不知道", "不管我的事啊"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_auto_complete_text_view);
        ArrayAdapter<String> adapter = new ArrayAdapter<>(AutoCompleteTextViewActivity.this, R.layout.item_dropdown, mStrs);
        autoCompleteTextViewDemo = findViewById(R.id.auto_tv_demo);
        autoCompleteTextViewDemo.setAdapter(adapter);
    }
}

来源：https://blog.csdn.net/weixin_43219615/article/details/98966946

标签

android

arrayadapter

xmlns