DatePicker和DataPickerDialog以及AutoCompleteTextView的基本使用方法

1.DatePicker和DatePickerDialog的基本使用方法：

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
 android:id="@+id/textViewId"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<Button
 android:id="@+id/showDatePickerButton"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="顯示DatePicker"
    />
</LinearLayout>

MainActivity.xml:

package mars.dateandtime;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;

public class MainActivity extends Activity {
	/** Called when the activity is first created. */
	private Button showDatePickerButton = null;
	//該常量用於標識DatePickerDialog
	private static final int DATE_PICKER_ID = 1;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		showDatePickerButton = (Button) findViewById(R.id.showDatePickerButton);
		showDatePickerButton.setOnClickListener(new ButtonListener());
	}

	private class ButtonListener implements OnClickListener {

		@Override
		public void onClick(View v) {
			//此方法用於顯示DatePickerDialog
			showDialog(DATE_PICKER_ID);
		}

	}
	//監聽器，用戶監聽用戶點下DatePikerDialog的set按鈕時，所設置的年月日
	DatePickerDialog.OnDateSetListener onDateSetListener = new DatePickerDialog.OnDateSetListener() {

		@Override
		public void onDateSet(DatePicker view, int year, int monthOfYear,
				int dayOfMonth) {
			System.out.println(year + "-" + monthOfYear + "-" + dayOfMonth);
		}
	};

	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case DATE_PICKER_ID:
			return new DatePickerDialog(this, onDateSetListener, 2010, 11, 25);
		}
		return null;
	}

}

 注意：月份是從0開始的。

2.AutoCompleteTextView的基本使用方法：

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="horizontal"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:padding="5dp">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Country" />
    <AutoCompleteTextView android:id="@+id/autocomplete"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"/>
</LinearLayout>

 list_item.xml(用於顯示下拉菜單的顯示效果)

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:textSize="16sp"
    android:textColor="#000">
</TextView>

 MainActivity.java:

package mars.autocomplete;

import java.util.ArrayList;
import java.util.List;

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

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
	AutoCompleteTextView autoCompleteTextView = null;
	static final String[] COUNTRIES = new String[] {
		  "Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra",
		  "Angola", "Anguilla", "Antarctica", "Antigua and Barbuda", "Argentina",
		  "Armenia", "Aruba", "Australia", "Austria", "Azerbaijan",
		  "Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium",
		  "Belize", "Benin", "Bermuda", "Bhutan", "Bolivia",
		  "Bosnia and Herzegovina", "Botswana", "Bouvet Island", "Brazil", "British Indian Ocean Territory",
		  "British Virgin Islands", "Brunei", "Bulgaria", "Burkina Faso", "Burundi",
		  "Cote d'Ivoire", "Cambodia", "Cameroon", "Canada", "Cape Verde",
		  "Cayman Islands", "Central African Republic", "Chad", "Chile", "China",
		  "Christmas Island", "Cocos (Keeling) Islands", "Colombia", "Comoros", "Congo",
		  "Cook Islands", "Costa Rica", "Croatia", "Cuba", "Cyprus", "Czech Republic",
		  "Democratic Republic of the Congo", "Denmark", "Djibouti", "Dominica", "Dominican Republic",
		  "East Timor", "Ecuador", "Egypt", "El Salvador", "Equatorial Guinea", "Eritrea",
		  "Estonia", "Ethiopia", "Faeroe Islands", "Falkland Islands", "Fiji", "Finland",
		  "Former Yugoslav Republic of Macedonia", "France", "French Guiana", "French Polynesia",
		  "French Southern Territories", "Gabon", "Georgia", "Germany", "Ghana", "Gibraltar",
		  "Greece", "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala", "Guinea", "Guinea-Bissau",
		  "Guyana", "Haiti", "Heard Island and McDonald Islands", "Honduras", "Hong Kong", "Hungary",
		  "Iceland", "India", "Indonesia", "Iran", "Iraq", "Ireland", "Israel", "Italy", "Jamaica",
		  "Japan", "Jordan", "Kazakhstan", "Kenya", "Kiribati", "Kuwait", "Kyrgyzstan", "Laos",
		  "Latvia", "Lebanon", "Lesotho", "Liberia", "Libya", "Liechtenstein", "Lithuania", "Luxembourg",
		  "Macau", "Madagascar", "Malawi", "Malaysia", "Maldives", "Mali", "Malta", "Marshall Islands",
		  "Martinique", "Mauritania", "Mauritius", "Mayotte", "Mexico", "Micronesia", "Moldova",
		  "Monaco", "Mongolia", "Montserrat", "Morocco", "Mozambique", "Myanmar", "Namibia",
		  "Nauru", "Nepal", "Netherlands", "Netherlands Antilles", "New Caledonia", "New Zealand",
		  "Nicaragua", "Niger", "Nigeria", "Niue", "Norfolk Island", "North Korea", "Northern Marianas",
		  "Norway", "Oman", "Pakistan", "Palau", "Panama", "Papua New Guinea", "Paraguay", "Peru",
		  "Philippines", "Pitcairn Islands", "Poland", "Portugal", "Puerto Rico", "Qatar",
		  "Reunion", "Romania", "Russia", "Rwanda", "Sqo Tome and Principe", "Saint Helena",
		  "Saint Kitts and Nevis", "Saint Lucia", "Saint Pierre and Miquelon",
		  "Saint Vincent and the Grenadines", "Samoa", "San Marino", "Saudi Arabia", "Senegal",
		  "Seychelles", "Sierra Leone", "Singapore", "Slovakia", "Slovenia", "Solomon Islands",
		  "Somalia", "South Africa", "South Georgia and the South Sandwich Islands", "South Korea",
		  "Spain", "Sri Lanka", "Sudan", "Suriname", "Svalbard and Jan Mayen", "Swaziland", "Sweden",
		  "Switzerland", "Syria", "Taiwan", "Tajikistan", "Tanzania", "Thailand", "The Bahamas",
		  "The Gambia", "Togo", "Tokelau", "Tonga", "Trinidad and Tobago", "Tunisia", "Turkey",
		  "Turkmenistan", "Turks and Caicos Islands", "Tuvalu", "Virgin Islands", "Uganda",
		  "Ukraine", "United Arab Emirates", "United Kingdom",
		  "United States", "United States Minor Outlying Islands", "Uruguay", "Uzbekistan",
		  "Vanuatu", "Vatican City", "Venezuela", "Vietnam", "Wallis and Futuna", "Western Sahara",
		  "Yemen", "Yugoslavia", "Zambia", "Zimbabwe"
		};
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //經過ID獲得AutoCompleteTextView對象
        autoCompleteTextView = (AutoCompleteTextView)findViewById(R.id.autocomplete);
        //建立一個list，爲ArrayAdapter提供數據
        List<String> list = new ArrayList<String>();
        list.add("測試測試");
        list.add("測試test");
        //建立一個ArrayAdapter對象
        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.list_item,COUNTRIES);  最後一個參數能夠是一個list也能夠是個字符數組
        //將ArrayAdapter設置給AutoCompleteTextView對象
        autoCompleteTextView.setAdapter(arrayAdapter);
        
    }
}

 顯示以下: