Android 之 自動提示功能(AutoCompleteTextView)的使用

在android中咱們可使用AutoCompleteTextView來實現自動提示功能。
咱們將須要進行提示的數據放入ArrayAdapter中，而後用AutoCompleteTextView的setAdapter方法，就可讓AutoCompleteTextView具備自動完成提示的功能了.

autocomplete.xml代碼

Xml代碼

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout
3. xmlns:android="http://schemas.android.com/apk/res/android"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. android:orientation="vertical"
7. >
8. <AutoCompleteTextView android:id="@+id/autoComplete"
9. android:layout_width="fill_parent"
10. android:layout_height="wrap_content">
11. </AutoCompleteTextView>
12. </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:orientation="vertical"
  >
  <AutoCompleteTextView android:id="@+id/autoComplete" 
  						android:layout_width="fill_parent" 
  						android:layout_height="wrap_content">
  </AutoCompleteTextView>
</LinearLayout>

java代碼

Java代碼

1. import android.app.Activity;
2. import android.os.Bundle;
3. import android.widget.ArrayAdapter;
4. import android.widget.AutoCompleteTextView;
6. /**
7. * 自動完成文本
8. * @author daist
9. * @date 2010-9-25
10. */
11. public class AutoCompleteActivity extends Activity {
13. private static final String[] COUNTRIES = {"China","Russia","Germany",
14. "Ukraine","Belarus","USA","China1","China2","USA1"};
16. @Override
17. protected void onCreate(Bundle savedInstanceState) {
18. super.onCreate(savedInstanceState);
19. setContentView(R.layout.autocomplete);
20. //建立一個ArrayAdapter
21. ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
22. android.R.layout.simple_dropdown_item_1line,COUNTRIES);
23. //獲取AutoCompleteTextView對象
24. AutoCompleteTextView autoComplete = (AutoCompleteTextView) findViewById(R.id.autoComplete);
25. //將AutoCompleteTextView與ArrayAdapter進行綁定
26. autoComplete.setAdapter(adapter);
27. //設置AutoCompleteTextView輸入1個字符就進行提示
28. autoComplete.setThreshold(1);
29. }
30. }

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

/**
 * 自動完成文本
 * @author daist
 * @date 2010-9-25
 */
public class AutoCompleteActivity extends Activity {
	
	private static final String[] COUNTRIES = {"China","Russia","Germany",
		"Ukraine","Belarus","USA","China1","China2","USA1"};
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.autocomplete);
		//建立一個ArrayAdapter
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
				android.R.layout.simple_dropdown_item_1line,COUNTRIES);
		//獲取AutoCompleteTextView對象
		AutoCompleteTextView autoComplete = (AutoCompleteTextView) findViewById(R.id.autoComplete);
		//將AutoCompleteTextView與ArrayAdapter進行綁定
		autoComplete.setAdapter(adapter);
		//設置AutoCompleteTextView輸入1個字符就進行提示
		autoComplete.setThreshold(1);
	}
}

運行效果

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