Android开发之《Android应用开发揭秘》UI事件汇总

调调

2011-12-27

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*Android开发之《Android应用开发揭秘》UI事件汇总

*北京Android俱乐部群：167839253

*Createdon:2011-12-01

*Author:blueeagle

*Email:[email protected]

思想跑毛是很可怕的，最近去尝试了下创业，结果碰了一鼻子灰，公司乱七八糟的项目搞的焦头烂额。各种没有心情。还好，现在沉淀下来，继续android开发的征程。

以下是Android应用开发揭秘这本书第四章的关于UI的事件处理的总结。基本上都是可以复用的代码。存着日后方便。

1.EditView控件的setOnKeyListener方法。点击上下左右键或者中间键的时候可以出发该方法。代码如下。

Java代码

1.myEditView.setOnKeyListener(newEditText.OnKeyListener(){

3.@Override

4.publicbooleanonKey(Viewv,intkeyCode,KeyEventevent){

5.myTextView.setText("文本框中内容是："+myEditView.getText().toString());

6.returnfalse;//TODOAuto-generatedmethodstub

7.}

8.});

myEditView.setOnKeyListener(newEditText.OnKeyListener(){@OverridepublicbooleanonKey(Viewv,intkeyCode,KeyEventevent){myTextView.setText("文本框中内容是："+myEditView.getText().toString());returnfalse;//TODOAuto-generatedmethodstub}});

2.RadioButton控件和RadioGroup控件的组合使用，代码如下：

Java代码

1.myRadioGroup.setOnCheckedChangeListener(newRadioGroup.OnCheckedChangeListener(){

3.@Override

4.publicvoidonCheckedChanged(RadioGroupgroup,intcheckedId){

5.//TODOAuto-generatedmethodstub

6.if(checkedId==myRadioButton3.getId())

7.{

8.DisplayToast("正确答案："+myRadioButton3.getText()+"恭喜你回答正确");

9.}

10.else

11.{

12.DisplayToast("回答错误");

13.}

14.}

15.);

myRadioGroup.setOnCheckedChangeListener(newRadioGroup.OnCheckedChangeListener(){@OverridepublicvoidonCheckedChanged(RadioGroupgroup,intcheckedId){//TODOAuto-generatedmethodstubif(checkedId==myRadioButton3.getId()){DisplayToast("正确答案："+myRadioButton3.getText()+"恭喜你回答正确");}else{DisplayToast("回答错误");}}});

3.CheckBox控件的使用，代码如下：

Java代码

1.myCheckBox1.setOnCheckedChangeListener(newCheckBox.OnCheckedChangeListener(){

2.@Override

3.publicvoidonCheckedChanged(CompoundButtonbuttonView,

4.booleanisChecked){

5.//TODOAuto-generatedmethodstub

6.if(myCheckBox1.isChecked()){

7.DisplayToast("你选择了："+myCheckBox1.getText());

8.}

9.}

10.});

myCheckBox1.setOnCheckedChangeListener(newCheckBox.OnCheckedChangeListener(){@OverridepublicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){//TODOAuto-generatedmethodstubif(myCheckBox1.isChecked()){DisplayToast("你选择了："+myCheckBox1.getText());}}});

4.Button控件的使用，代码如下：

Java代码

1.myButton1.setOnClickListener(newButton.OnClickListener(){

2.@Override

3.publicvoidonClick(Viewv){

4.}

5.});

myButton1.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){}});

4.Spinner控件的使用，代码如下：

Java代码

1.//Spinner控件需要跟ArrayAdapter绑定使用。

2.privatestaticfinalString[]m_Countries={"A型","B型","O型","AB型","未知类型"};

3.privateSpinnermySpinner;

4.privateArrayAdapter<String>myAdapter;

5.mySpinner=(Spinner)findViewById(R.id.mySpinner1);

6.myAdapter=newArrayAdapter<String>(this,android.R.layout.simple_spinner_item,m_Countries);

7.//设置下拉列表风格

8.myAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

9.//将adapter添加到mySpinner中

10.mySpinner.setAdapter(myAdapter);

11.//添加事件监听

12.mySpinner.setOnItemSelectedListener(newSpinner.OnItemSelectedListener(){

13.@Override

14.publicvoidonItemSelected(AdapterView<?>arg0,Viewarg1,

15.intarg2,longarg3){

16.//TODOAuto-generatedmethodstub

17.myTextView.setText("你的血型是"+m_Countries[arg2]);

18.arg0.setVisibility(View.VISIBLE);

19.}

20.@Override

21.publicvoidonNothingSelected(AdapterView<?>arg0){

22.//TODOAuto-generatedmethodstub

23.DisplayToast("你什么也没选！");

24.}

25.});

//Spinner控件需要跟ArrayAdapter绑定使用。privatestaticfinalString[]m_Countries={"A型","B型","O型","AB型","未知类型"};privateSpinnermySpinner;privateArrayAdapter<String>myAdapter;mySpinner=(Spinner)findViewById(R.id.mySpinner1);myAdapter=newArrayAdapter<String>(this,android.R.layout.simple_spinner_item,m_Countries);//设置下拉列表风格myAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);//将adapter添加到mySpinner中mySpinner.setAdapter(myAdapter);//添加事件监听mySpinner.setOnItemSelectedListener(newSpinner.OnItemSelectedListener(){@OverridepublicvoidonItemSelected(AdapterView<?>arg0,Viewarg1,intarg2,longarg3){//TODOAuto-generatedmethodstubmyTextView.setText("你的血型是"+m_Countries[arg2]);arg0.setVisibility(View.VISIBLE);}@OverridepublicvoidonNothingSelected(AdapterView<?>arg0){//TODOAuto-generatedmethodstubDisplayToast("你什么也没选！");}});

5.AutoCompleteTextView的使用，代码如下：

Java代码

1.privatestaticfinalString[]autoString={"abcd1","abcd212","32123","32open","32add","android","windows","iphone","linux","mydirve","msnbmw","wocaonimalegebi"};

2.privateArrayAdapter<String>myAdapter1;

3.privateAutoCompleteTextViewmyAutoCompleteTextView;

4.myAdapter1=newArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,autoString);

5.myAutoCompleteTextView=(AutoCompleteTextView)findViewById(R.id.myAutoCompleteTextView);

6.myAutoCompleteTextView.setAdapter(myAdapter1);

7.6.DatePicker、TimePicker以及Button的使用，代码如下：

8.myCalendar1=Calendar.getInstance();

9.myTextView=(TextView)findViewById(R.id.myTextView);

10.myDatePicker=(DatePicker)findViewById(R.id.datePicker1);

11.myTimePicker=(TimePicker)findViewById(R.id.timePicker1);

12.myButton1=(Button)findViewById(R.id.button1);

13.myButton2=(Button)findViewById(R.id.button2);

14.

15.//将日历初始化为当前系统时间，并设置其事件监听

16.myDatePicker.init(myCalendar1.get(Calendar.YEAR),myCalendar1.get(Calendar.MONTH),myCalendar1.get(Calendar.DAY_OF_MONTH),newDatePicker.OnDateChangedListener(){

17.

18.@Override

19.publicvoidonDateChanged(DatePickerview,intyear,intmonthOfYear,

20.intdayOfMonth){

21.//当日期更改时，在这里处理。

22.//myCalendar1.set(year,month,day);

23.}

24.});

25.//获取TimePicker对象设置为24小时显示。

26.myTimePicker.setIs24HourView(true);

27.//监听时间改变

28.myTimePicker.setOnTimeChangedListener(newTimePicker.OnTimeChangedListener(){

29.

30.@Override

31.publicvoidonTimeChanged(TimePickerview,inthourOfDay,intminute){

32.//TODOAuto-generatedmethodstub

33.//当时间改变时，在这里处理。

34.//myCalendar1.set(year,month,day,hourOfDay,minute);

35.}

36.});

37.//-----------按钮事件---------//

38.myButton1.setOnClickListener(newButton.OnClickListener(){

39.@Override

40.publicvoidonClick(Viewv){

41.//下面的NEW是新建了一个调整日历的对话框

42.newDatePickerDialog(AndroidUnleashed001Activity.this,newDatePickerDialog.OnDateSetListener(){

43.@Override

44.publicvoidonDateSet(DatePickerview,intyear,

45.intmonthOfYear,intdayOfMonth){

46.//TODOAuto-generatedmethodstub

47.//设置日历

48.}

49.},myCalendar1.get(Calendar.YEAR),myCalendar1.get(Calendar.MONTH),myCalendar1.get(Calendar.DAY_OF_MONTH)).show();

50.}

51.});

52.myButton2.setOnClickListener(newButton.OnClickListener(){

53.@Override

54.publicvoidonClick(Viewv){

55.//下面的NEW是新建了一个调整时间的对话框

56.newTimePickerDialog(AndroidUnleashed001Activity.this,newTimePickerDialog.OnTimeSetListener(){

57.

58.@Override

59.publicvoidonTimeSet(TimePickerview,inthourOfDay,intminute){

60.//TODOAuto-generatedmethodstub

61.}

62.},myCalendar1.get(Calendar.HOUR_OF_DAY),myCalendar1.get(Calendar.MINUTE),true).show();

63.}

64.});

65.}

privatestaticfinalString[]autoString={"abcd1","abcd212","32123","32open","32add","android","windows","iphone","linux","mydirve","msnbmw","wocaonimalegebi"};privateArrayAdapter<String>myAdapter1;privateAutoCompleteTextViewmyAutoCompleteTextView;myAdapter1=newArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,autoString);myAutoCompleteTextView=(AutoCompleteTextView)findViewById(R.id.myAutoCompleteTextView);myAutoCompleteTextView.setAdapter(myAdapter1);6.DatePicker、TimePicker以及Button的使用，代码如下：myCalendar1=Calendar.getInstance();myTextView=(TextView)findViewById(R.id.myTextView);myDatePicker=(DatePicker)findViewById(R.id.datePicker1);myTimePicker=(TimePicker)findViewById(R.id.timePicker1);myButton1=(Button)findViewById(R.id.button1);myButton2=(Button)findViewById(R.id.button2);//将日历初始化为当前系统时间，并设置其事件监听myDatePicker.init(myCalendar1.get(Calendar.YEAR),myCalendar1.get(Calendar.MONTH),myCalendar1.get(Calendar.DAY_OF_MONTH),newDatePicker.OnDateChangedListener(){@OverridepublicvoidonDateChanged(DatePickerview,intyear,intmonthOfYear,intdayOfMonth){//当日期更改时，在这里处理。//myCalendar1.set(year,month,day);}});//获取TimePicker对象设置为24小时显示。myTimePicker.setIs24HourView(true);//监听时间改变myTimePicker.setOnTimeChangedListener(newTimePicker.OnTimeChangedListener(){@OverridepublicvoidonTimeChanged(TimePickerview,inthourOfDay,intminute){//TODOAuto-generatedmethodstub//当时间改变时，在这里处理。//myCalendar1.set(year,month,day,hourOfDay,minute);}});//-----------按钮事件---------//myButton1.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//下面的NEW是新建了一个调整日历的对话框newDatePickerDialog(AndroidUnleashed001Activity.this,newDatePickerDialog.OnDateSetListener(){@OverridepublicvoidonDateSet(DatePickerview,intyear,intmonthOfYear,intdayOfMonth){//TODOAuto-generatedmethodstub//设置日历}},myCalendar1.get(Calendar.YEAR),myCalendar1.get(Calendar.MONTH),myCalendar1.get(Calendar.DAY_OF_MONTH)).show();}});myButton2.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//下面的NEW是新建了一个调整时间的对话框newTimePickerDialog(AndroidUnleashed001Activity.this,newTimePickerDialog.OnTimeSetListener(){@OverridepublicvoidonTimeSet(TimePickerview,inthourOfDay,intminute){//TODOAuto-generatedmethodstub}},myCalendar1.get(Calendar.HOUR_OF_DAY),myCalendar1.get(Calendar.MINUTE),true).show();}});}

7.Menu的使用，代码如下：

1.XML方式实现

XML代码可以写成：

Html代码

1.<menuxmlns:android="http://schemas.android.com/apk/res/android">

2.<itemandroid:id="@+id/style_submenu"android:title="笔迹样式">

3.<menu>

4.<groupandroid:id="@+id/style_group"android:checkableBehavior="single">

5.<itemandroid:id="@+id/style"android:orderInCategory="1"android:title="铅笔"/>

6.<itemandroid:id="@+id/style"android:orderInCategory="2"android:title="钢笔"/>

7.<itemandroid:id="@+id/style"android:orderInCategory="3"android:title="毛笔"/>

8.</group>

9.</menu>

10.</item>

11.<itemandroid:id="@+id/color_submenu"android:title="笔迹颜色">

12.<menu>

13.<groupandroid:id="@+id/color_group"android:checkableBehavior="single">

14.<itemandroid:id="@+id/color"android:orderInCategory="0"android:title="蓝色"/>

15.<itemandroid:id="@+id/color"android:orderInCategory="1"android:title="绿色"/>

16.<itemandroid:id="@+id/color"android:orderInCategory="2"android:title="青色"/>

17.<itemandroid:id="@+id/color"android:orderInCategory="3"android:title="红色"/>

18.</group>

19.</menu>

20.</item>

21.<itemandroid:id="@+id/width_submenu"android:title="笔迹粗细">

22.<menu>

23.<groupandroid:id="@+id/width_group"android:checkableBehavior="single">

24.<itemandroid:id="@+id/width"android:orderInCategory="1"android:title="较细"/>

25.<itemandroid:id="@+id/width"android:orderInCategory="2"android:title="细"/>

26.<itemandroid:id="@+id/width"android:orderInCategory="3"android:title="中等"/>

27.<itemandroid:id="@+id/width"android:orderInCategory="4"android:title="粗"/>

28.<itemandroid:id="@+id/width"android:orderInCategory="5"android:title="较粗"/>

29.</group>

30.</menu>

31.</item>

32.<itemandroid:id="@+id/write"android:title="书写"/>

33.<itemandroid:id="@+id/erase"android:title="清除"/>

34.<itemandroid:id="@+id/clear"android:title="清屏"/>

35.</menu>

<menuxmlns:android="http://schemas.android.com/apk/res/android"><itemandroid:id="@+id/style_submenu"android:title="笔迹样式"><menu><groupandroid:id="@+id/style_group"android:checkableBehavior="single"><itemandroid:id="@+id/style"android:orderInCategory="1"android:title="铅笔"/><itemandroid:id="@+id/style"android:orderInCategory="2"android:title="钢笔"/><itemandroid:id="@+id/style"android:orderInCategory="3"android:title="毛笔"/></group></menu></item><itemandroid:id="@+id/color_submenu"android:title="笔迹颜色"><menu><groupandroid:id="@+id/color_group"android:checkableBehavior="single"><itemandroid:id="@+id/color"android:orderInCategory="0"android:title="蓝色"/><itemandroid:id="@+id/color"android:orderInCategory="1"android:title="绿色"/><itemandroid:id="@+id/color"android:orderInCategory="2"android:title="青色"/><itemandroid:id="@+id/color"android:orderInCategory="3"android:title="红色"/></group></menu></item><itemandroid:id="@+id/width_submenu"android:title="笔迹粗细"><menu><groupandroid:id="@+id/width_group"android:checkableBehavior="single"><itemandroid:id="@+id/width"android:orderInCategory="1"android:title="较细"/><itemandroid:id="@+id/width"android:orderInCategory="2"android:title="细"/><itemandroid:id="@+id/width"android:orderInCategory="3"android:title="中等"/><itemandroid:id="@+id/width"android:orderInCategory="4"android:title="粗"/><itemandroid:id="@+id/width"android:orderInCategory="5"android:title="较粗"/></group></menu></item><itemandroid:id="@+id/write"android:title="书写"/><itemandroid:id="@+id/erase"android:title="清除"/><itemandroid:id="@+id/clear"android:title="清屏"/></menu>

JAVA代码：

Java代码

1.@Override

2.publicbooleanonCreateOptionsMenu(Menumenu){

3.MenuInflaterinflater=getMenuInflater();

4.inflater.inflate(R.menu.menu,menu);

5.returntrue;

6.}

7.@Override

8.publicbooleanonOptionsItemSelected(MenuItemitem){

9.intitem_id=item.getItemId();

10.switch(item_id)

11.{

12.caseR.id.about1:

13.Intentintent=newIntent();

14.

15.intent.setClass(AndroidUnleashed001Activity.this,Activity02.class);

16.startActivity(intent);

17.AndroidUnleashed001Activity.this.finish();

18.break;

19.caseR.id.about2:

20.AndroidUnleashed001Activity.this.finish();

21.break;

22.}

23.returntrue;

24.}

25..Menu.add方法实现

26.publicbooleanonCreateOptionsMenu(Menumenu){

27.//MenuInflaterinflater=getMenuInflater();

28.//inflater.inflate(R.menu.menu,menu);

29.menu.add(0,0,0,R.string.app_name);

30.menu.add(0,1,1,R.string.hello);

31.returntrue;

32.}

@OverridepublicbooleanonCreateOptionsMenu(Menumenu){MenuInflaterinflater=getMenuInflater();inflater.inflate(R.menu.menu,menu);returntrue;}@OverridepublicbooleanonOptionsItemSelected(MenuItemitem){intitem_id=item.getItemId();switch(item_id){caseR.id.about1:Intentintent=newIntent();intent.setClass(AndroidUnleashed001Activity.this,Activity02.class);startActivity(intent);AndroidUnleashed001Activity.this.finish();break;caseR.id.about2:AndroidUnleashed001Activity.this.finish();break;}returntrue;}1.Menu.add方法实现publicbooleanonCreateOptionsMenu(Menumenu){//MenuInflaterinflater=getMenuInflater();//inflater.inflate(R.menu.menu,menu);menu.add(0,0,0,R.string.app_name);menu.add(0,1,1,R.string.hello);returntrue;}

8.弹出对话框的使用，代码如下：

这个功能为弹出对话框，点击确定后弹出登录对话框，然后点击登录后弹出多线程对话框。

Java代码

1.Dialogdialog=newAlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle("登录提示").setMessage("这里需要登录").setPositiveButton("确定",newDialogInterface.OnClickListener(){

2.@Override

3.publicvoidonClick(DialogInterfacedialog,intwhich){

4.//点击确定转向登陆框

5.LayoutInflaterfactory=LayoutInflater.from(AndroidUnleashed001Activity.this);

6.//得到自定义对话框

7.finalViewDialogView=factory.inflate(R.layout.pop,null);

8.//创建对话框

9.AlertDialogdlg=newAlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle("登录框").setView(DialogView).setPositiveButton("确定",newDialogInterface.OnClickListener(){

10.privateProgressDialogmyProgressDialog;

11.@Override

12.publicvoidonClick(DialogInterfacedialog,intwhich){

13.//当输入完成后，点击确定开始登录。

14.myProgressDialog=ProgressDialog.show(AndroidUnleashed001Activity.this,"请等待","正在为您登陆",true);

15.newThread(){

16.publicvoidrun(){

17.try{

18.sleep(3000);

19.}

20.catch(Exceptione){

21.e.printStackTrace();

22.}

23.finally{

24.myProgressDialog.dismiss();

25.}

26.}

27.}.start();

28.}

29.}).setNegativeButton("取消",newDialogInterface.OnClickListener(){

30.

31.@Override

32.publicvoidonClick(DialogInterfacedialog,intwhich){

33.//TODOAuto-generatedmethodstub

34.AndroidUnleashed001Activity.this.finish();

35.}

36.}).create();

37.dlg.show();

38.}

39.}).setNegativeButton("退出",newDialogInterface.OnClickListener(){

40.

41.@Override

42.publicvoidonClick(DialogInterfacedialog,intwhich){

43.//TODOAuto-generatedmethodstub

44.AndroidUnleashed001Activity.this.finish();

45.}

46.}).create();

47.dialog.show();

Dialogdialog=newAlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle("登录提示").setMessage("这里需要登录").setPositiveButton("确定",newDialogInterface.OnClickListener(){@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//点击确定转向登陆框LayoutInflaterfactory=LayoutInflater.from(AndroidUnleashed001Activity.this);//得到自定义对话框finalViewDialogView=factory.inflate(R.layout.pop,null);//创建对话框AlertDialogdlg=newAlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle("登录框").setView(DialogView).setPositiveButton("确定",newDialogInterface.OnClickListener(){privateProgressDialogmyProgressDialog;@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//当输入完成后，点击确定开始登录。myProgressDialog=ProgressDialog.show(AndroidUnleashed001Activity.this,"请等待","正在为您登陆",true);newThread(){publicvoidrun(){try{sleep(3000);}catch(Exceptione){e.printStackTrace();}finally{myProgressDialog.dismiss();}}}.start();}}).setNegativeButton("取消",newDialogInterface.OnClickListener(){@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//TODOAuto-generatedmethodstubAndroidUnleashed001Activity.this.finish();}}).create();dlg.show();}}).setNegativeButton("退出",newDialogInterface.OnClickListener(){@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//TODOAuto-generatedmethodstubAndroidUnleashed001Activity.this.finish();}}).create();dialog.show();

9.ImageView的使用，代码如下：

Java代码

1.myImageButton1.setImageDrawable(getResources().getDrawable(R.drawable.logo2));

3.myImageButton1.setOnClickListener(newButton.OnClickListener(){

5.@Override

6.publicvoidonClick(Viewv){

7.//TODOAuto-generatedmethodstub

8.Dialogmydialog=newAlertDialog.Builder(AndroidUnleashed003Activity.this).setTitle("提示")

9..setMessage("我是ImageButton1").setPositiveButton("确定",newDialogInterface.OnClickListener(){

10.

11.@Override

12.publicvoidonClick(DialogInterfacedialog,intwhich){

13.//TODOAuto-generatedmethodstub

14.

15.}

16.}).create();

17.mydialog.show();

18.}

19.});

myImageButton1.setImageDrawable(getResources().getDrawable(R.drawable.logo2));myImageButton1.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstubDialogmydialog=newAlertDialog.Builder(AndroidUnleashed003Activity.this).setTitle("提示").setMessage("我是ImageButton1").setPositiveButton("确定",newDialogInterface.OnClickListener(){@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//TODOAuto-generatedmethodstub}}).create();mydialog.show();}});

注意：如果要去掉ImageButton后面的背景色，使得ImageButton看起来更漂亮一些而不是有个边，则需要做：在XML文件中的属性里添加：“android:background="#00000000"”

10.Gallery的使用，拖动效果很炫，代码如下：

Java代码

1.GallerymyGallery=(Gallery)findViewById(R.id.myGallery);

2.//添加ImageAdapter给Gallery对象

3.myGallery.setAdapter(newImageAdapter(this));

4.myGallery.setBackgroundResource(R.drawable.background);

5.myGallery.setOnItemClickListener(newOnItemClickListener(){

6.@Override

7.publicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,

8.longarg3){

9.//TODOAuto-generatedmethodstub

10.Toast.makeText(AndroidUnleashed003Activity.this,"你选择了"+(arg2+1)+"号图片",Toast.LENGTH_SHORT).show();

11.}

12.});

13.}

14.//另外，需要存放图片，存放图片的容器，需要使用一个类实现，这个类是ImageAdapter，继承于BaseAdapter。

15.publicclassImageAdapterextendsBaseAdapter{

16.privateContextmyContext;

17.privateInteger[]mImageIds={

18.R.drawable.ic_launcher,

19.R.drawable.icon,

20.R.drawable.logo,

21.R.drawable.logo2,

22.R.drawable.logo,

23.R.drawable.ic_launcher,

24.R.drawable.icon,

25.R.drawable.logo,

26.};

27.publicImageAdapter(Contextc){

28.myContext=c;

29.}

30.@Override

31.//获取图片的个数

32.publicintgetCount(){

33.//TODOAuto-generatedmethodstub

34.returnmImageIds.length;

35.}

36.@Override

37.//获取图片在库中的位置

38.publicObjectgetItem(intarg0){

39.//TODOAuto-generatedmethodstub

40.returnarg0;

41.}

42.

43.@Override

44.//获取图片在库中的位置

45.publiclonggetItemId(intarg0){

46.//TODOAuto-generatedmethodstub

47.returnarg0;

48.}

49.@Override

50.publicViewgetView(intposition,Viewarg1,ViewGrouparg2){

51.//TODOAuto-generatedmethodstub

52.//returnnull;

53.ImageViewmyImageView=newImageView(myContext);

54.//给ImageView设置资源

55.myImageView.setImageResource(mImageIds[position]);

56.//设置布局图片以120*120显示

57.//myImageView.setLayoutParams(newGallery.LayoutParams(120,120));

58.//设置显示比例类型

59.//myImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);

60.returnmyImageView;

61.}

62.}

GallerymyGallery=(Gallery)findViewById(R.id.myGallery);//添加ImageAdapter给Gallery对象myGallery.setAdapter(newImageAdapter(this));myGallery.setBackgroundResource(R.drawable.background);myGallery.setOnItemClickListener(newOnItemClickListener(){@OverridepublicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,longarg3){//TODOAuto-generatedmethodstubToast.makeText(AndroidUnleashed003Activity.this,"你选择了"+(arg2+1)+"号图片",Toast.LENGTH_SHORT).show();}});}//另外，需要存放图片，存放图片的容器，需要使用一个类实现，这个类是ImageAdapter，继承于BaseAdapter。publicclassImageAdapterextendsBaseAdapter{privateContextmyContext;privateInteger[]mImageIds={R.drawable.ic_launcher,R.drawable.icon,R.drawable.logo,R.drawable.logo2,R.drawable.logo,R.drawable.ic_launcher,R.drawable.icon,R.drawable.logo,};publicImageAdapter(Contextc){myContext=c;}@Override//获取图片的个数publicintgetCount(){//TODOAuto-generatedmethodstubreturnmImageIds.length;}@Override//获取图片在库中的位置publicObjectgetItem(intarg0){//TODOAuto-generatedmethodstubreturnarg0;}@Override//获取图片在库中的位置publiclonggetItemId(intarg0){//TODOAuto-generatedmethodstubreturnarg0;}@OverridepublicViewgetView(intposition,Viewarg1,ViewGrouparg2){//TODOAuto-generatedmethodstub//returnnull;ImageViewmyImageView=newImageView(myContext);//给ImageView设置资源myImageView.setImageResource(mImageIds[position]);//设置布局图片以120*120显示//myImageView.setLayoutParams(newGallery.LayoutParams(120,120));//设置显示比例类型//myImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);returnmyImageView;}}

11.ImageSwitcher的使用，代码如下：

Java代码

1.//首先需要实现接口：

2.extendsActivityimplementsOnClickListener,ViewFactory

3.//具体操作：

4.LinearLayoutmyMainView=newLinearLayout(this);

5.//创建ImageSwitcher对象

6.mySwitcher=newImageSwitcher(this);

7.myMainView.addView(mySwitcher);

8.mySwitcher.setId(BUTTON_SWITCHER_ID);

9.mySwitcher.setFactory(this);

10.mySwitcher.setImageResource(mImageIds[index]);

11.

12.setContentView(myMainView);

13.

14.Buttonnext=newButton(this);

15.next.setId(BUTTON_DOWN_ID);

16.next.setText("下一张");

17.next.setOnClickListener(this);

18.//LinearLayout.LayoutParamsparam=newLinearLayout.LayoutParams(200,200);

19.myMainView.addView(next);

20.

21.Buttonpre=newButton(this);

22.pre.setId(BUTTON_UP_ID);

23.pre.setText("上一张");

24.pre.setOnClickListener(this);

25.myMainView.addView(pre);

26.

27.}

28.

29.privateImageSwitchermySwitcher;

30.privatestaticintindex=0;

31.//上一页，下一页的按钮索引和Switcher的对象ID

32.privatestaticfinalintBUTTON_DOWN_ID=0x123456;

33.privatestaticfinalintBUTTON_UP_ID=0x123457;

34.privatestaticfinalintBUTTON_SWITCHER_ID=0x123458;

35.

36.//实现OnClickListener接口的函数

37.@Override

38.publicvoidonClick(Viewv){

39.//TODOAuto-generatedmethodstub

40.switch(v.getId()){

41.caseBUTTON_DOWN_ID:

42.index++;

43.if(index>=mImageIds.length){

44.index=0;

45.}

46.mySwitcher.setImageResource(mImageIds[index]);

47.break;

48.caseBUTTON_UP_ID:

49.index--;

50.if(index<0){

51.index=mImageIds.length-1;

52.}

53.mySwitcher.setImageResource(mImageIds[index]);

54.break;

55.default:

56.break;

57.}

58.}

59.

60.//实现View.Factory接口的函数

61.@Override

62.publicViewmakeView(){

63.//TODOAuto-generatedmethodstub

64.returnnewImageView(this);

65.}

//首先需要实现接口：extendsActivityimplementsOnClickListener,ViewFactory//具体操作：LinearLayoutmyMainView=newLinearLayout(this);//创建ImageSwitcher对象mySwitcher=newImageSwitcher(this);myMainView.addView(mySwitcher);mySwitcher.setId(BUTTON_SWITCHER_ID);mySwitcher.setFactory(this);mySwitcher.setImageResource(mImageIds[index]);setContentView(myMainView);Buttonnext=newButton(this);next.setId(BUTTON_DOWN_ID);next.setText("下一张");next.setOnClickListener(this);//LinearLayout.LayoutParamsparam=newLinearLayout.LayoutParams(200,200);myMainView.addView(next);Buttonpre=newButton(this);pre.setId(BUTTON_UP_ID);pre.setText("上一张");pre.setOnClickListener(this);myMainView.addView(pre);}privateImageSwitchermySwitcher;privatestaticintindex=0;//上一页，下一页的按钮索引和Switcher的对象IDprivatestaticfinalintBUTTON_DOWN_ID=0x123456;privatestaticfinalintBUTTON_UP_ID=0x123457;privatestaticfinalintBUTTON_SWITCHER_ID=0x123458;//实现OnClickListener接口的函数@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstubswitch(v.getId()){caseBUTTON_DOWN_ID:index++;if(index>=mImageIds.length){index=0;}mySwitcher.setImageResource(mImageIds[index]);break;caseBUTTON_UP_ID:index--;if(index<0){index=mImageIds.length-1;}mySwitcher.setImageResource(mImageIds[index]);break;default:break;}}//实现View.Factory接口的函数@OverridepublicViewmakeView(){//TODOAuto-generatedmethodstubreturnnewImageView(this);}

12.GridView的使用，代码如下：

Java代码

1.//这个和Gallery的使用相似，也需要存图片在BaseAdapter中。

2.GridViewmyGridView=(GridView)findViewById(R.id.gridView1);

3.myGridView.setAdapter(newImageAdapter(this));

5.myGridView.setBackgroundResource(R.drawable.background);

6.myGridView.setOnItemClickListener(newOnItemClickListener(){

8.@Override

9.publicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,

10.longarg3){

11.//TODOAuto-generatedmethodstub

12.Toast.makeText(AndroidUnleashed003Activity.this,"你选择了"+(arg2+1)+"号图片",Toast.LENGTH_SHORT).show();

13.}

14.

15.});

16.}

//这个和Gallery的使用相似，也需要存图片在BaseAdapter中。GridViewmyGridView=(GridView)findViewById(R.id.gridView1);myGridView.setAdapter(newImageAdapter(this));myGridView.setBackgroundResource(R.drawable.background);myGridView.setOnItemClickListener(newOnItemClickListener(){@OverridepublicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,longarg3){//TODOAuto-generatedmethodstubToast.makeText(AndroidUnleashed003Activity.this,"你选择了"+(arg2+1)+"号图片",Toast.LENGTH_SHORT).show();}});}

12.ScrollView的使用，代码如下：

Java代码

1.//要垂直滚动，使用ScrollView要水平滚动使用HorizontalScrollView。

2.myLayout=(LinearLayout)findViewById(R.id.myLayout);

3.myScllorView=(ScrollView)findViewById(R.id.myScrollView);

4.ButtonmyButton=(Button)findViewById(R.id.myButton);

6.myButton.setOnClickListener(newButton.OnClickListener(){

7.privateintmIndex=-1;

8.@Override

9.publicvoidonClick(Viewv){

10.//TODOAuto-generatedmethodstub

11.TextViewmyTextView=newTextView(ScrollerViewActivity.this);

12.myTextView.setText("TextView"+mIndex);

13.LinearLayout.LayoutParamsp=newLinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT);

14.//增加一个TextView到现行布局中

15.myLayout.addView(myTextView,p);

16.

17.ButtonmyButtonView=newButton(ScrollerViewActivity.this);

18.myButtonView.setText("Button"+mIndex++);

19.//增加一个Button到线性布局中

20.myLayout.addView(myButtonView,p);

21.//改变默认焦点切换

22.//myButtonView.setOnKeyListener(newButtonKeyListener);

23.//投递一个消息进行滚动

24.//myHandler.post(myScolltoBottom);

25.}

26.

27.});

28.}

//要垂直滚动，使用ScrollView要水平滚动使用HorizontalScrollView。myLayout=(LinearLayout)findViewById(R.id.myLayout);myScllorView=(ScrollView)findViewById(R.id.myScrollView);ButtonmyButton=(Button)findViewById(R.id.myButton);myButton.setOnClickListener(newButton.OnClickListener(){privateintmIndex=-1;@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstubTextViewmyTextView=newTextView(ScrollerViewActivity.this);myTextView.setText("TextView"+mIndex);LinearLayout.LayoutParamsp=newLinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT);//增加一个TextView到现行布局中myLayout.addView(myTextView,p);ButtonmyButtonView=newButton(ScrollerViewActivity.this);myButtonView.setText("Button"+mIndex++);//增加一个Button到线性布局中myLayout.addView(myButtonView,p);//改变默认焦点切换//myButtonView.setOnKeyListener(newButtonKeyListener);//投递一个消息进行滚动//myHandler.post(myScolltoBottom);}});}

13.ProgressBar的使用，代码如下：

ProgressBarStyleHorizontal（长形进度条）

ProgressBarStyleLarge（圆形进度条）

Java代码

1.publicclassProgressBarAextendsActivity{

2.protectedstaticfinalintGUI_STOP_NOTIFIER=0x108;

3.protectedstaticfinalintGUI_THREADING_NOTIFIER=0x109;

4.privateProgressBarmyProgress1;

5.privateProgressBarmyProgress2;

6.privateButtonmyButton;

7.privateintintCounter;

8./**Calledwhentheactivityisfirstcreated.*/

9.@Override

10.publicvoidonCreate(BundlesavedInstanceState){

11.super.onCreate(savedInstanceState);

12.//设置窗口模式，因为需要显示进度条在标题栏

13.requestWindowFeature(Window.FEATURE_PROGRESS);

14.setProgressBarVisibility(true);

15.setContentView(R.layout.main);

16.//取得ProgressBar

17.myProgress1=(ProgressBar)findViewById(R.id.myProgressBar01);

18.myProgress2=(ProgressBar)findViewById(R.id.myProgressBar02);

19.myButton=(Button)findViewById(R.id.myButton);

20.

21.myProgress1.setIndeterminate(false);

22.myProgress2.setIndeterminate(false);

23.

24.myButton.setOnClickListener(newButton.OnClickListener(){

25.

26.@Override

27.publicvoidonClick(Viewv){

28.//TODOAuto-generatedmethodstub

29.myProgress1.setVisibility(View.VISIBLE);

30.myProgress2.setVisibility(View.VISIBLE);

31.

32.myProgress1.setMax(100);

33.myProgress1.setProgress(0);

34.myProgress2.setProgress(0);

35.

36.//通过线程来改变Progress的值

37.

38.newThread(newRunnable(){

39.

40.@Override

41.publicvoidrun(){

42.//TODOAuto-generatedmethodstub

43.for(inti=0;i<10;i++){

44.try{

45.intCounter=(i+1)*20;

46.Thread.sleep(1000);

47.if(i==4){

48.Messagem=newMessage();

49.m.what=ProgressBarA.GUI_STOP_NOTIFIER;

50.ProgressBarA.this.myMessageHandler.sendMessage(m);

51.break;

52.}

53.else{

54.Messagem=newMessage();

55.m.what=ProgressBarA.GUI_THREADING_NOTIFIER;

56.ProgressBarA.this.myMessageHandler.sendMessage(m);

57.}

58.}

59.catch(Exceptione){

60.e.printStackTrace();

61.}

62.}

63.}

64.

65.}).start();

66.}

67.

68.});

69.}

70.HandlermyMessageHandler=newHandler(){

71.publicvoidhandleMessage(Messagemsg){

72.switch(msg.what){

73.caseProgressBarA.GUI_STOP_NOTIFIER:

74.//myProgress1.setVisibility(View.GONE);

75.//myProgress2.setVisibility(View.GONE);

76.//Thread.currentThread().interrupt();

77.break;

78.caseProgressBarA.GUI_THREADING_NOTIFIER:

79.if(!Thread.currentThread().isInterrupted()){

80.myProgress1.setProgress(intCounter);

81.myProgress1.setProgress(intCounter);

82.setProgress(intCounter*100);//设置标题栏中前景的一个进度条进度值

83.//setSecondaryProgress(intCounter*100);//设置标题栏中后面的一个进度条进度值

84.//Thread.currentThread().interrupt();

85.}

86.break;

87.}

88.super.handleMessage(msg);

89.}

90.};

91.}

publicclassProgressBarAextendsActivity{protectedstaticfinalintGUI_STOP_NOTIFIER=0x108;protectedstaticfinalintGUI_THREADING_NOTIFIER=0x109;privateProgressBarmyProgress1;privateProgressBarmyProgress2;privateButtonmyButton;privateintintCounter;/**Calledwhentheactivityisfirstcreated.*/@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);//设置窗口模式，因为需要显示进度条在标题栏requestWindowFeature(Window.FEATURE_PROGRESS);setProgressBarVisibility(true);setContentView(R.layout.main);//取得ProgressBarmyProgress1=(ProgressBar)findViewById(R.id.myProgressBar01);myProgress2=(ProgressBar)findViewById(R.id.myProgressBar02);myButton=(Button)findViewById(R.id.myButton);myProgress1.setIndeterminate(false);myProgress2.setIndeterminate(false);myButton.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstubmyProgress1.setVisibility(View.VISIBLE);myProgress2.setVisibility(View.VISIBLE);myProgress1.setMax(100);myProgress1.setProgress(0);myProgress2.setProgress(0);//通过线程来改变Progress的值newThread(newRunnable(){@Overridepublicvoidrun(){//TODOAuto-generatedmethodstubfor(inti=0;i<10;i++){try{intCounter=(i+1)*20;Thread.sleep(1000);if(i==4){Messagem=newMessage();m.what=ProgressBarA.GUI_STOP_NOTIFIER;ProgressBarA.this.myMessageHandler.sendMessage(m);break;}else{Messagem=newMessage();m.what=ProgressBarA.GUI_THREADING_NOTIFIER;ProgressBarA.this.myMessageHandler.sendMessage(m);}}catch(Exceptione){e.printStackTrace();}}}}).start();}});}HandlermyMessageHandler=newHandler(){publicvoidhandleMessage(Messagemsg){switch(msg.what){caseProgressBarA.GUI_STOP_NOTIFIER://myProgress1.setVisibility(View.GONE);//myProgress2.setVisibility(View.GONE);//Thread.currentThread().interrupt();break;caseProgressBarA.GUI_THREADING_NOTIFIER:if(!Thread.currentThread().isInterrupted()){myProgress1.setProgress(intCounter);myProgress1.setProgress(intCounter);setProgress(intCounter*100);//设置标题栏中前景的一个进度条进度值//setSecondaryProgress(intCounter*100);//设置标题栏中后面的一个进度条进度值//Thread.currentThread().interrupt();}break;}super.handleMessage(msg);}};}

14.SeekBar的使用，代码如下：

Java代码

1.implementsSeekBar.OnSeekBarChangeListener

2.//实现OnSeekBarChangeListener接口

3.publicvoidonProgressChanged(SeekBarseekBar,intprogress,

4.booleanfromUser){

5.//TODOAuto-generatedmethodstub

6.myProgressText.setText("当前值："+progress);

7.}

8.@Override

9.publicvoidonStartTrackingTouch(SeekBarseekBar){

10.//TODOAuto-generatedmethodstub

11.myTrackingText.setText("正在调节");

12.}

13.@Override

14.publicvoidonStopTrackingTouch(SeekBarseekBar){

15.//TODOAuto-generatedmethodstub

16.myTrackingText.setText("停止调节");

17.}

18.}

implementsSeekBar.OnSeekBarChangeListener//实现OnSeekBarChangeListener接口publicvoidonProgressChanged(SeekBarseekBar,intprogress,booleanfromUser){//TODOAuto-generatedmethodstubmyProgressText.setText("当前值："+progress);}@OverridepublicvoidonStartTrackingTouch(SeekBarseekBar){//TODOAuto-generatedmethodstubmyTrackingText.setText("正在调节");}@OverridepublicvoidonStopTrackingTouch(SeekBarseekBar){//TODOAuto-generatedmethodstubmyTrackingText.setText("停止调节");}}

15.Notification、NotificationManager的使用，代码如下：

Java代码

1.myIntent=newIntent(Notification01.this,Notification02.class);

2.//主要是设置点击通知时显示内容的类

3.myPendingIntent=PendingIntent.getActivity(Notification01.this,0,myIntent,0);

4.//构造Notification对象

5.myNotification=newNotification();

6.myButton1.setOnClickListener(newButton.OnClickListener(){

7.@Override

8.publicvoidonClick(Viewv){

9.//TODOAuto-generatedmethodstub

10.//设置通知在状态栏显示的图标

11.myNotification.icon=R.drawable.ic_launcher;

12.myNotification.tickerText="Button1的通知内容...";

13.//通知时发出默认的声音

14.myNotification.defaults=Notification.DEFAULT_SOUND;

15.//设置通知显示的参数

16.myNotification.setLatestEventInfo(Notification01.this,"Button1","Button1通知",myPendingIntent);

17.//可以理解为执行这个通知

18.myNotificationManager.notify(0,myNotification);

19.}

20.});

myIntent=newIntent(Notification01.this,Notification02.class);//主要是设置点击通知时显示内容的类myPendingIntent=PendingIntent.getActivity(Notification01.this,0,myIntent,0);//构造Notification对象myNotification=newNotification();myButton1.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstub//设置通知在状态栏显示的图标myNotification.icon=R.drawable.ic_launcher;myNotification.tickerText="Button1的通知内容...";//通知时发出默认的声音myNotification.defaults=Notification.DEFAULT_SOUND;//设置通知显示的参数myNotification.setLatestEventInfo(Notification01.this,"Button1","Button1通知",myPendingIntent);//可以理解为执行这个通知myNotificationManager.notify(0,myNotification);}});

16.ProgressDialog的使用，代码如下：

Java代码

1.myButton01=(Button)findViewById(R.id.Button1);

2.myButton02=(Button)findViewById(R.id.Button2);

3.myButton01.setOnClickListener(newButton.OnClickListener(){

4.@Override

5.publicvoidonClick(Viewv){

6.//TODOAuto-generatedmethodstub

7.//创建ProgressDialog对象

8.myProgressDialog=newProgressDialog(ProgressDialogActivity.this);

9.//设置进度条风格，风格为圆形的，旋转的

10.myProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

11.//设置ProgressDialog标题

12.myProgressDialog.setTitle("提示");

13.//设置ProgressDialog提示信息

14.myProgressDialog.setMessage("这是一个圆形进度条对话框");

15.//设置myProgressDialog标题图标

16.myProgressDialog.setIcon(R.drawable.ic_launcher);

17.//设置myProgressDialog的进度条是否不明确

18.myProgressDialog.setIndeterminate(false);

19.//设置myProgressDialog是否可以按退回键取消

20.myProgressDialog.setCancelable(true);

21.//设置myProgressDialog的一个Button

22.myProgressDialog.setButton("确定",newDialogInterface.OnClickListener(){

23.

24.@Override

25.publicvoidonClick(DialogInterfacedialog,intwhich){

26.//TODOAuto-generatedmethodstub

27.//点击确定取消对话框

28.dialog.cancel();

29.}

30.});

31.//让ProgressDialog显示

32.myProgressDialog.show();

33.}

34.});

35.

36.myButton02.setOnClickListener(newButton.OnClickListener(){

37.@Override

38.publicvoidonClick(Viewv){

39.//TODOAuto-generatedmethodstub

40.myCount=0;

41.//创建ProgressDialog对象

42.myProgressDialog=newProgressDialog(ProgressDialogActivity.this);

43.//设置进度条风格，风格为长形的。

44.myProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

45.//设置ProgressDialog标题

46.myProgressDialog.setTitle("提示");

47.//设置ProgressDialog提示信息

48.myProgressDialog.setMessage("这是一个长形进度条对话框");

49.//设置myProgressDialog标题图标

50.myProgressDialog.setIcon(R.drawable.ic_launcher);

51.//设置myProgressDialog进度条进度

52.myProgressDialog.setProgress(100);

53.//设置myProgressDialog的进度条是否不明确

54.myProgressDialog.setIndeterminate(false);

55.//设置myProgressDialog是否可以按退回键取消

56.myProgressDialog.setCancelable(true);

57.//设置myProgressDialog的一个Button

58.myProgressDialog.setButton("确定",newDialogInterface.OnClickListener(){

59.

60.@Override

61.publicvoidonClick(DialogInterfacedialog,intwhich){

62.//TODOAuto-generatedmethodstub

63.//点击确定取消对话框

64.dialog.cancel();

65.}

66.});

67.//让ProgressDialog显示

68.myProgressDialog.show();

69.newThread(){

70.publicvoidrun(){

71.try{

72.while(myCount<=100){

73.//由线程来控制进度

74.myProgressDialog.setProgress(myCount++);

75.Thread.sleep(100);

76.}

77.myProgressDialog.cancel();

78.}

79.catch(InterruptedExceptione){

80.myProgressDialog.cancel();

81.}

82.}

83.}.start();

84.}

85.});

myButton01=(Button)findViewById(R.id.Button1);myButton02=(Button)findViewById(R.id.Button2);myButton01.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstub//创建ProgressDialog对象myProgressDialog=newProgressDialog(ProgressDialogActivity.this);//设置进度条风格，风格为圆形的，旋转的myProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);//设置ProgressDialog标题myProgressDialog.setTitle("提示");//设置ProgressDialog提示信息myProgressDialog.setMessage("这是一个圆形进度条对话框");//设置myProgressDialog标题图标myProgressDialog.setIcon(R.drawable.ic_launcher);//设置myProgressDialog的进度条是否不明确myProgressDialog.setIndeterminate(false);//设置myProgressDialog是否可以按退回键取消myProgressDialog.setCancelable(true);//设置myProgressDialog的一个ButtonmyProgressDialog.setButton("确定",newDialogInterface.OnClickListener(){@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//TODOAuto-generatedmethodstub//点击确定取消对话框dialog.cancel();}});//让ProgressDialog显示myProgressDialog.show();}});myButton02.setOnClickListener(newButton.OnClickListener(){@OverridepublicvoidonClick(Viewv){//TODOAuto-generatedmethodstubmyCount=0;//创建ProgressDialog对象myProgressDialog=newProgressDialog(ProgressDialogActivity.this);//设置进度条风格，风格为长形的。myProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置ProgressDialog标题myProgressDialog.setTitle("提示");//设置ProgressDialog提示信息myProgressDialog.setMessage("这是一个长形进度条对话框");//设置myProgressDialog标题图标myProgressDialog.setIcon(R.drawable.ic_launcher);//设置myProgressDialog进度条进度myProgressDialog.setProgress(100);//设置myProgressDialog的进度条是否不明确myProgressDialog.setIndeterminate(false);//设置myProgressDialog是否可以按退回键取消myProgressDialog.setCancelable(true);//设置myProgressDialog的一个ButtonmyProgressDialog.setButton("确定",newDialogInterface.OnClickListener(){@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){//TODOAuto-generatedmethodstub//点击确定取消对话框dialog.cancel();}});//让ProgressDialog显示myProgressDialog.show();newThread(){publicvoidrun(){try{while(myCount<=100){//由线程来控制进度myProgressDialog.setProgress(myCount++);Thread.sleep(100);}myProgressDialog.cancel();}catch(InterruptedExceptione){myProgressDialog.cancel();}}}.start();}});

17.TabWidget的使用，代码如下：

要使用TabWidget，首先要了解TabHost，TabHost是一个用来存放Tab标签的容器。

Java代码

1.publicclassTabHostActivityextendsTabActivity{

2.TabHostmyTabHost;

4./**Calledwhentheactivityisfirstcreated.*/

5.@Override

6.publicvoidonCreate(BundlesavedInstanceState){

7.super.onCreate(savedInstanceState);

8.setContentView(R.layout.main);

9.//获取TabHost对象

10.myTabHost=getTabHost();

11.//为TabHost添加标签，新建一个newTabSpec(newTabSpec)设置其标签和图标(setIndicator)设置内容(setContent)

12.myTabHost.addTab(myTabHost.newTabSpec("tabHost1").setIndicator("TAB1",getResources().getDrawable(R.drawable.ic_launcher)).setContent(R.id.myTabContent1));

13.myTabHost.addTab(myTabHost.newTabSpec("tabHost2").setIndicator("TAB2",getResources().getDrawable(R.drawable.ic_launcher)).setContent(R.id.myTabContent2));

14.myTabHost.addTab(myTabHost.newTabSpec("tabHost3").setIndicator("TAB3",getResources().getDrawable(R.drawable.ic_launcher)).setContent(R.id.myTabContent3));

15.//设置TabHost的背景颜色

16.myTabHost.setBackgroundColor(Color.argb(150,22,70,150));

17.//设置当前显示哪个标签

18.myTabHost.setCurrentTab(1);

19.//标签切换事件处理setOnTabChangedListener

20.myTabHost.setOnTabChangedListener(newTabHost.OnTabChangeListener(){

21.

22.@Override

23.publicvoidonTabChanged(StringtabId){

24.//TODOAuto-generatedmethodstub

25.Dialogdialog=newAlertDialog.Builder(TabHostActivity.this).setTitle("提示").setMessage("当前选中"+tabId).setPositiveButton("确定",newDialogInterface.OnClickListener(){

26.

27.@Override

28.publicvoidonClick(DialogInterfacedialog,intwhich){

29.//TODOAuto-generatedmethodstub

30.dialog.cancel();

31.}

32.}).create();

33.dialog.show();

34.}

35.});

36.}

37.}

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