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系出名门Android(6) - 控件(View)之DatePicker, TimePicker, ToggleButton, EditText, ProgressBar, SeekBar, AutoCompleteTextView, MultiAutoCompleteTextView

作者：webabcd


介绍
在 Android 中使用各种控件(View)
  • DatePicker - 日期选择控件
  • TimePicker - 时间选择控件
  • ToggleButton - 双状态按钮控件
  • EditText - 可编辑文本控件
  • ProgressBar - 进度条控件
  • SeekBar - 可拖动的进度条控件
  • AutoCompleteTextView - 支持自动完成功能的可编辑文本控件
  • MultiAutoCompleteTextView - 支持自动完成功能的可编辑文本控件，允许输入多值（多值之间会自动地用指定的分隔符分开）


1、DatePicker 的 Demo
datepicker.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" >
        
        
         < DatePicker android:id ="@+id/datePicker"
                 android:layout_width ="wrap_content" android:layout_height ="wrap_content" >
         DatePicker >
        
LinearLayout >   _DatePicker.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;

public class _DatePicker extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 // TODO Auto-generated method stub
                 super.onCreate(savedInstanceState);
                 this.setContentView(R.layout.datepicker);

                 // 具体的应用可参见对话框中的示例
                setTitle( "DatePicker");
        }
}     2、TimePicker 的 Demo
timepicker.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" >
        
        
         < TimePicker android:id ="@+id/timePicker"
                 android:layout_width ="wrap_content" android:layout_height ="wrap_content" >
         TimePicker >
        
LinearLayout >   _TimePicker.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;

public class _TimePicker extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 // TODO Auto-generated method stub
                 super.onCreate(savedInstanceState);
                 this.setContentView(R.layout.timepicker);

                 // 具体的应用可参见对话框中的示例
                setTitle( "TimePicker");
        }
}     3、ToggleButton 的 Demo
togglebutton.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:layout_width ="fill_parent"
                 android:layout_height ="wrap_content" android:id ="@+id/textView" />
                
        
         < ToggleButton android:id ="@+id/toggleButton"
                 android:layout_width ="wrap_content" android:layout_height ="wrap_content"
                 android:textOn ="关闭" android:textOff ="打开" />
                
LinearLayout >   _ToggleButton.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.ToggleButton;

public class _ToggleButton extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 // TODO Auto-generated method stub
                 super.onCreate(savedInstanceState);
                 this.setContentView(R.layout.togglebutton);

                setTitle( "ToggleButton");
                
                 final ToggleButton btn = (ToggleButton) this.findViewById(R.id.toggleButton);
                 // setOnClickListener() - 响应按钮的鼠标单击事件
                btn.setOnClickListener( new Button.OnClickListener(){
                        @Override
                         public void onClick(View v) {
                                TextView txt = (TextView) _ToggleButton. this.findViewById(R.id.textView);
                                 // ToggleButton.isChecked() - 双状态按钮的按钮状态
                                txt.setText( "按钮状态：" + String.valueOf(btn.isChecked()));
                        }
                });
        }
}     4、EditText 的 Demo
edittext.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" >
        
        
         < EditText android:id ="@+id/editText" android:layout_width ="fill_parent"
                 android:layout_height ="wrap_content" >
         EditText >
        
LinearLayout >   _EditText.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;

public class _EditText extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 // TODO Auto-generated method stub
                 super.onCreate(savedInstanceState);
                 this.setContentView(R.layout.edittext);

                setTitle( "EditText");
                
                EditText txt = (EditText) this.findViewById(R.id.editText);
                txt.setText( "我可编辑");
        }
}     5、ProgressBar 的 Demo
progressbar.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" >

        

        
         < ProgressBar android:id ="@+android:id/progress_large"
                 style ="?android:attr/progressBarStyleLarge" android:layout_width ="wrap_content"
                 android:layout_height ="wrap_content" />
         < ProgressBar android:id ="@+android:id/progress"
                 android:layout_width ="wrap_content" android:layout_height ="wrap_content" />
         < ProgressBar android:id ="@+android:id/progress_small"
                 style ="?android:attr/progressBarStyleSmall" android:layout_width ="wrap_content"
                 android:layout_height ="wrap_content" />

        
         < ProgressBar android:id ="@+id/progress_horizontal"
                 style ="?android:attr/progressBarStyleHorizontal" android:layout_width ="200px"
                 android:layout_height ="wrap_content" android:max ="100"
                 android:progress ="50" android:secondaryProgress ="75" />

LinearLayout >   _ProgressBar.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.view.Window;


// 另见对话框中的进度条
public class _ProgressBar extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 // TODO Auto-generated method stub
                 super.onCreate(savedInstanceState);                
                
                 // 设置特性以允许在应用程序的标题栏上显示进度条（条状）
                requestWindowFeature(Window.FEATURE_PROGRESS);
                 // 设置特性以允许在应用程序的标题栏上显示进度条（圆圈状）
                requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

                 this.setContentView(R.layout.progressbar);

                setTitle( "ProgressBar");
                
                 // 在标题栏上显示进度条（条状）
                setProgressBarVisibility( true);
                 // 在标题栏上显示进度条（圆圈状）
                setProgressBarIndeterminateVisibility( true);
                
                 // 指定进度条的进度
                setProgress(50 * 100);
                setSecondaryProgress(75 * 100);
        }
}     6、SeekBar 的 Demo
seekbar.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" >
        
        
         < SeekBar android:id ="@+id/seekBar" android:layout_width ="fill_parent"
                 android:layout_height ="wrap_content" android:max ="100"
                 android:progress ="50" android:secondaryProgress ="75" />

         < TextView android:id ="@+id/progress" android:layout_width ="fill_parent"
                 android:layout_height ="wrap_content" />

         < TextView android:id ="@+id/tracking" android:layout_width ="fill_parent"
                 android:layout_height ="wrap_content" />

LinearLayout >   _SeekBar.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;

public class _SeekBar extends Activity implements
                SeekBar.OnSeekBarChangeListener {

        SeekBar mSeekBar;
        TextView mProgressText;
        TextView mTrackingText;

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 // TODO Auto-generated method stub
                 super.onCreate(savedInstanceState);
                 this.setContentView(R.layout.seekbar);

                setTitle( "SeekBar");

                mSeekBar = (SeekBar) findViewById(R.id.seekBar);
                 // setOnSeekBarChangeListener() - 响应拖动进度条事件
                mSeekBar.setOnSeekBarChangeListener( this);
                
                mProgressText = (TextView) findViewById(R.id.progress);
                mTrackingText = (TextView) findViewById(R.id.tracking);
        }

         // 拖动进度条后，进度发生改变时的回调事件
         public void onProgressChanged(SeekBar seekBar, int progress,
                         boolean fromTouch) {
                mProgressText.setText(progress + "%");
        }

         // 拖动进度条前开始跟踪触摸
         public void onStartTrackingTouch(SeekBar seekBar) {
                mTrackingText.setText( "开始跟踪触摸");
        }

         // 拖动进度条后停止跟踪触摸
         public void onStopTrackingTouch(SeekBar seekBar) {
                mTrackingText.setText( "停止跟踪触摸");
        }

}     7、AutoCompleteTextView 的 Demo
autocompletetextview.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" >

        
         < AutoCompleteTextView android:id ="@+id/editText"
                 android:layout_width ="fill_parent" android:layout_height ="wrap_content" />

LinearLayout >   _AutoCompleteTextView.java package com.webabcd.view;

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

public class _AutoCompleteTextView extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 super.onCreate(savedInstanceState);
                setContentView(R.layout.autocompletetextview);

                setTitle( "AutoCompleteTextView");
                
                 // 实例化适配器，指定显示格式及数据源
                ArrayAdapter adapter = new ArrayAdapter(
                                 this,
                                android.R.layout.simple_dropdown_item_1line,    
                                ary);
                AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.editText);
                 // 指定自动完成控件的适配器
                textView.setAdapter(adapter);
        }

         // 自动完成控件的所需数据的数据源
         private String[] ary = new String[] {
                 "abc",
                 "abcd",
                 "abcde",
                 "abcdef",
                 "abcdefg",
                 "hij",
                 "hijk",
                 "hijkl",
                 "hijklm",
                 "hijklmn",
        };
}     8、MultiAutoCompleteTextView 的 Demo
multiautocompletetextview.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" >

        
         < MultiAutoCompleteTextView android:id ="@+id/editText"
                 android:layout_width ="fill_parent" android:layout_height ="wrap_content" />

LinearLayout >   _MultiAutoCompleteTextView.java package com.webabcd.view;

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

public class _MultiAutoCompleteTextView extends Activity {

        @Override
         protected void onCreate(Bundle savedInstanceState) {
                 super.onCreate(savedInstanceState);
                setContentView(R.layout.multiautocompletetextview);

                setTitle( "MultiAutoCompleteTextView");
                
                 // 实例化适配器，指定显示格式及数据源
                ArrayAdapter adapter = new ArrayAdapter(
                                 this,
                                android.R.layout.simple_dropdown_item_1line,    
                                ary);
                MultiAutoCompleteTextView textView = (MultiAutoCompleteTextView) findViewById(R.id.editText);
                textView.setAdapter(adapter);
                
                 // 设置多个值之间的分隔符，此处为逗号
                textView.setTokenizer( new MultiAutoCompleteTextView.CommaTokenizer());
        }

         // 自动完成控件的所需数据的数据源
         private String[] ary = new String[] {
                 "abc",
                 "abcd",
                 "abcde",
                 "abcdef",
                 "abcdefg",
                 "hij",
                 "hijk",
                 "hijkl",
                 "hijklm",
                 "hijklmn",
        };
}     OK
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