android3.0新特性UI.doc

Android3.0新增UI控件AdapterViewAnimator控件AdapterViewAnimator（堆View），已知子类有AdapterViewFlipper, StackView，是一系列View的集合，这些View叠加一起，并且View之间可以进行切换，并且在多个View切换过程体现渐隐渐现的动画效果。通过AdapterViewAnimator.setAdapter()方法设置一组要显示的View，通过AdapterViewAnimator.showPrevious()方法移动到前一个View,通过AdapterViewAnimator.showNext()移动到下一个View，示例代码如下：效果图：Src//AdapterViewAnimatorActivity.javares/layout/adapterviewanimator_layout.xmlAdapterViewFlipper控件AdapterViewFilpper（堆View），是AdapterViewAnimator的子类，是一系列View的集合，这些View叠加一起，并且View之间可以进行切换，并且在多个View切换过程体现渐隐渐现的动画效果。通过AdapterViewFilpper.setAdapter()方法设置一组要显示的View，通过AdapterViewFilpper.showPrevious()方法移动到前一个View,通过AdapterViewFilpper.showNext()移动到下一个View，示例代码如下：效果图：Src//AdapterViewFlipperActivity.javapackage ;import android.app.Activity;import android.graphics.Color; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterViewFlipper;import android.widget.Button; public class AdapterViewFlipperActivity extends Activity private int mColors = Color.BLUE, Color.CYAN, Color.GRAY, Color.GREEN, Color.RED; Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.adapterviewflipper_layout); final AdapterViewFlipper adapterViewFlipper = (AdapterViewFlipper) findViewById(R.id.mAdapterViewFlipper); ColorAdapter colorAdapter = new ColorAdapter(this, mColors); adapterViewFlipper.setAdapter(colorAdapter); final Button previousButon = (Button) findViewById(R.id.previousButton); previousButon.setOnClickListener(new OnClickListener() public void onClick(View view) adapterViewFlipper.showPrevious(); ); final Button nextButton = (Button) findViewById(R.id.nextButton); nextButton.setOnClickListener(new OnClickListener() public void onClick(View view) adapterViewFlipper.showNext(); ); res/layout/adapterviewflipper_layout.xml ListPopupWindow控件锚于宿主视图，并显示如一个建议，当输入到一个列表中的选项的EditText查看列表。CalendarView控件CalendarView是一个日历控件，作为显示和选择日期。日期范围的及日历样式是可配置的。用户可以选择一个日期,也可以触摸滚动日历。可在xml布局中添加此控件，可通过CalendarView.setOnDateChangeListener()方法为此控件的每一格设置点击事件。示例代码如下：效果图：Src//CalendarViewActivity.javapackage ;import android.app.Activity;import android.os.Bundle;import android.widget.CalendarView;import android.widget.CalendarView.OnDateChangeListener;import android.widget.Toast;public class CalendarViewActivity extends ActivityOverrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.calendarview_layout);CalendarView calendarView = (CalendarView) findViewById(R.id.calendarView);calendarView.setOnDateChangeListener(new OnDateChangeListener() Overridepublic void onSelectedDayChange(CalendarView view, int year, int month,int dayOfMonth) Toast.makeText(CalendarViewActivity.this, getString(R.string.select) + year + getString(R.string.year) + month + getString(R.string.month) + dayOfMonth + getString(R.string.day), Toast.LENGTH_SHORT).show(););res/layout/calendarview_layout.xmlNumberPicker控件这控件可用于设置时间的控件，允许用户选择一个数字，从一个预定范围。该部件提供了一个输入字段和向上和向下选择一个数字按钮。可按这两个按钮选择一个值填入显示框中，显示框还允许用户触摸滚动，这时会显示上个与下个的值，可以选择当前值来显示。此类中提供了NumberPicker.setLeft()方法设置最小值，NumberPicker.setMaxValue()设置最大值，可用NumberPicker.setOnValueChangedListener()方法监听更改值事件，只需new OnValueChangeListener对象，并重写里面onValueChange()方法即可，示例代码如下：效果图：Src//NumberPickerActivity.javapackage ;import android.app.Activity;import android.os.Bundle;import android.widget.NumberPicker;import android.widget.NumberPicker.OnValueChangeListener;import android.widget.Toast;public class NumberPickerActivity extends Activity NumberPicker mNumberPicker1 = null;NumberPicker mNumberPicker2 = null;NumberPicker mNumberPicker3 = null;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);setContentView(R.layout.numberpicker_layout);mNumberPicker1 = (NumberPicker) findViewById(R.id.numberPicker1);mNumberPicker1.setLeft(0);mNumberPicker1.setMaxValue(24);mNumberPicker1.setOnValueChangedListener(new OnValueChangeListener() Overridepublic void onValueChange(NumberPicker picker, int oldVal, int newVal) Toast.makeText(NumberPickerActivity.this,picker.getValue()+getString(R.string.hours), Toast.LENGTH_SHORT).show(););mNumberPicker2 = (NumberPicker) findViewById(R.id.numberPicker2);mNumberPicker2.setLeft(0);mNumberPicker2.setMaxValue(60);mNumberPicker2.setOnValueChangedListener(new OnValueChangeListener() Overridepublic void onValueChange(NumberPicker picker, int oldVal, int newVal) Toast.makeText(NumberPickerActivity.this,picker.getValue()+getString(R.string.minutes), Toast.LENGTH_SHORT).show(););mNumberPicker3 = (NumberPicker) findViewById(R.id.numberPicker3);mNumberPicker3.setLeft(0);mNumberPicker3.setMaxValue(60);mNumberPicker3.setOnValueChangedListener(new OnValueChangeListener() Overridepublic void onValueChange(NumberPicker picker, int oldVal, int newVal) Toast.makeText(NumberPickerActivity.this,picker.getValue()+getString(R.string.second), Toast.LENGTH_SHORT).show(););res/layout/numberpicker_layout.xml StackView控件StackView（堆View），是AdapterViewAnimator的子类，一系列View的集合，这些View以层叠样式显示，并且View之间可以进行切换（切换方式有两种：（1）拖动StackView组件中的某一个View，（2）通过代码控制），这样每一个View都有机会显示给用户，供用户使用，并且在多个View切换过程中可以添加动画效果。通过StackView.setAdapter()方法设置一组要显示的View，通过StackView.showPrevious()方法移动到前一个View,通过StackView.showNext()移动到下一个View示例代码如下：效果图：Src//StackViewActivity.javapackage ;import android.app.Activity;import android.graphics.Color; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.StackView;public class StackViewActivity extends Activity private int mColors = Color.BLUE, Color.CYAN, Color.GRAY, Color.GREEN, Color.RED; Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.stackview_layout); final StackView stackView = (StackView) findViewById(R.id.mStackView); ColorAdapter colorAdapter = new ColorAdapter(this, mColors); stackView.setAdapter(colorAdapter); final Button previousButon = (Button) findViewById(R.id.previousButton); previousButon.setOnClickListener(new OnClickListener() public void onClick(View view) stackView.showPrevious(); ); final Button nextButton = (Button) findViewById(R.id.nextButton); nextButton.setOnClickListener(new OnClickListener() public void onClick(View view) stackView.showNext(); ); Src//ColorAdapter.javapackage ;import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.LinearLayout; public class ColorAdapter extends BaseAdapter private Context mContext; private int mColors; public ColorAdapter(Context context, int colors) mContext = context; mColors = colors; public int getCount() return mColors = null ? 0 : mColors.length; public Object getItem(int position) return mColors = null ? null : mColorsposition; public long getItemId(int position) return position; public View getView(int position, View cacheView, ViewGroup parent) LinearLayout.LayoutParams colorLayoutParams = new LinearLayout.LayoutParams(100, 100); LinearLayout colorLayout = new LinearLayout(mContext); colorLayout.setBackgroundColor(mColorsposition); colorLayout.setLayoutParams(colorLayoutParams); return colorLayout; res/layout/stackview_layout.xml PopupMenu控件PopupMenu是个下拉菜单控件，可增加多条下拉菜单以及给每条下拉菜单增加子菜单。可通过new PopupMenu(context, view)创建一个下拉菜单，view为点击的控件，点此view时显示菜单，通过PopupMenu.getMenuInflater().inflate(R.menu.popup, PopupMenu.getMenu()方式为下接菜单设置主菜单项及子菜单项，R.menu.popup为下拉菜单资源文件,getMenu用于取得与此相关的弹出菜单对象，整个方法的作用就是将资源文件中的菜单项加入弹出菜单中，通过PopupMenu.setOnMenuItemClickListener()方法为每个弹出菜单项设定点击事件。示例代码如下：效果图：Src//PopupMenuActivity.javapackage ;import android.app.Activity;import android.os.Bundle;import android.view.MenuItem;import android.view.View;import android.widget.PopupMenu;import android.widget.Toast;public class PopupMenuActivity extends Activity PopupMenu popup = null; Override protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.popupmenu_layout); public void onPopupButtonClick(View button) popup = new PopupMenu(this, button); popup.getMenuInflater().inflate(R.menu.popup, popup.getMenu(); popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() public boolean onMenuItemClick(MenuItem item) if(item.getTitle().equals(getString(R.string.exit) popup.dismiss(); else Toast.makeText(PopupMenuActivity.this, getString(R.string.click) + item.getTitle(),Toast.LENGTH_SHORT).show(); return true; ); popup.show(); res/menu/popup.xml res/layout/popupmenu_layout.xml SearchView控件SearchView是一个搜索框控件，可增加一个ListView实现自动补全功能，通过Adapter给此控件加入自动补全列表，可根据输入的字段进行搜索，SearchView.setOnQueryTextListener()监听事件，其中onQueryTextChange()方法监听输入事件，onQueryTextSubmit()方法监听回车或搜索按钮事件。SearchView.setSubmitButtonEnabled()方法用于显示一个执行搜索功能的按钮，点此按钮时会触发onQueryTextSubmit()方法。SearchView.setQueryHint()方法用于控件默认显示的文本，示例代码如下：效果图：Src//SearchViewActivity.javapackage ;import android.app.Activity;import android.os.Bundle;import android.text.TextUtils;import android.view.Window;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.SearchView;import android.widget.Toast;/* * 搜索框控件,可自动补全 */public class SearchViewActivity extends Activity implements SearchView.OnQueryTextListener private SearchView mSearchView; private ListView mListView; /*自动补全列表*/ private final String mStrings = a,b,c; Override protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); getWindow().requestFeature(Window.FEATURE_ACTION_BAR); setContentView(R.layout.searchview_layout); mListView = (ListView) findViewById(R.id.list_view); mListView.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1,mStrings); mListView.setTextFilterEnabled(true); mSearchView = (SearchView) findViewById(R.id.search_view); mSearchView.setIconifiedByDefault(false); mSearchView.setOnQueryTextListener(this); mSearchView.setSubmitButtonEnabled(true); mSearchView.setQueryHint(getString(R.string.search); /*输入字符时触发*/ public boolean onQueryTextChange(String newText) if (TextUtils.isEmpty(newText) mListView.clearTextFilter(); else mListView.setFilterText(newText.toString(); return true; /*按回车或搜索按钮时触发，此处编写搜索代码*/ public boolean onQueryTextSubmit(String query) Toast