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android Manifest Manifest.permission Manifest.permission_group android.accessibilityservice AccessibilityService android.accounts Account android.app NotificationManager android.bluetooth BluetoothAdapter BluetoothClass BluetoothClass.Device BluetoothClass.Device.Major BluetoothClass.Service BluetoothDevice BluetoothServerSocket BluetoothSocket android.content SharedPreferences android.database.sqlite SQLiteCursorDriver SQLiteOpenHelper android.graphics Bitmap android.location LocationListener Geocoder GpsStatus GpsStatus.Listener GpsStatus.NmeaListener GpsSatellite android.media AudioFormat AsyncPlayer AudioRecord AudioRecord.OnRecordPositionUpdateListener ThumbnailUtils AudioManager android.net TrafficStats MailTo LocalSocket android.os AsyncTask AsyncTask.Status CountDownTimer Message MessageQueue HandlerThread android.text Html android.util JsonWriter android.view ContextMenu ContextMenu.ContextMenuInfo Display ViewManager View ViewStub ViewTreeObserver ViewParent WindowManager GestureDetector Gravity MenuInflater ScaleGestureDetector SoundEffectConstants android.view.inputmethod InputConnection InputMethod InputMethodSession BaseInputConnection InputMethodManager android.widget AbsListView AbsListView.LayoutParams AbsListView.OnScrollListener AbsListView.RecyclerListener AbsoluteLayout AbsoluteLayout.LayoutParams AbsSeekBar AbsSpinner AdapterView AdapterView.AdapterContextMenuInfo AdapterView.OnItemLongClickListener AdapterView.OnItemSelectedListener AdapterView.OnItemClickListener AnalogClock BaseAdapter BaseExpandableListAdapter Button CheckBox CheckedTextView Checkable Chronometer Chronometer.OnChronometerTickListener CompoundButton CompoundButton.OnCheckedChangeListener CursorAdapter CursorTreeAdapter DatePicker DatePicker.OnDateChangedListener DialerFilter DigitalClock EditText Filter Filter.FilterListener Filter.FilterResults ExpandableListAdapter ExpandableListView.OnChildClickListener ExpandableListView.OnGroupClickListener ExpandableListView.OnGroupCollapseListener ExpandableListView.OnGroupExpandListener Filterable Gallery Gallery.LayoutParams GridView GridLayout GridLayout.Alignment RadioGroup ImageView ImageView.ScaleType HorizontalScrollView ImageButton ImageSwitcher FilterQueryProvider ListAdapter ListView MediaController MultiAutoCompleteTextView MultiAutoCompleteTextView.CommaTokenizer MultiAutoCompleteTextView.Tokenizer QuickContactBadge RadioButton RatingBar RatingBar.OnRatingBarChangeListener RelativeLayout RemoteViews ResourceCursorAdapter ResourceCursorTreeAdapter Scroller ScrollView SearchView SearchView.OnCloseListener SearchView.OnQueryTextListener SearchView.OnSuggestionListener SeekBar SeekBar.OnSeekBarChangeListener SimpleAdapter SimpleAdapter.ViewBinder SimpleCursorAdapter SimpleCursorAdapter.CursorToStringConverter SimpleCursorAdapter.ViewBinder SimpleCursorTreeAdapter SimpleCursorTreeAdapter.ViewBinder SimpleExpandableListAdapter SlidingDrawer SlidingDrawer.OnDrawerCloseListener SlidingDrawer.OnDrawerOpenListener SlidingDrawer.OnDrawerScrollListener Spinner SpinnerAdapter WrapperListAdapter TabHost TabHost.TabSpec TextView TimePicker TimePicker.OnTimeChangedListener Toast TableLayout TableLayout.LayoutParams TableRow TableRow.LayoutParams TabWidget TextSwitcher ToggleButton TwoLineListItem VideoView ViewAnimator ViewFlipper ViewSwitcher ViewSwitcher.ViewFactory ZoomButtonsController ZoomButtonsController.OnZoomListener ZoomButton ZoomControls dalvik.system DexFile
Figuren


RadioButton

農(nóng)民伯伯

版本：Android 2.2 r1

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public class RadioButton extends CompoundButton

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java.lang.Object

android.view.View

? ???? android.widget.TextView

android.widget.Button

android.widget.CompoundButton

android.widget.RadioButton

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概述

????????

???????? 單選按鈕是一種雙狀態(tài)的按鈕，可以選擇或不選中。在單選按鈕沒(méi)有被選中時(shí)，用戶能夠按下或點(diǎn)擊來(lái)選中它。但是，與復(fù)選框相反，用戶一旦選中就不能夠取消選中（譯者注：可以通過(guò)代碼來(lái)控制，界面上點(diǎn)擊的效果是一旦選中之后就不能取消選中了）。

???????? 多個(gè)單選按鈕通常與RadioGroup同時(shí)使用。當(dāng)一個(gè)單選組（RadioGroup）包含幾個(gè)單選按鈕時(shí)，選中其中一個(gè)的同時(shí)將取消其它選中的單選按鈕。（譯者注：示例參見(jiàn)這里）

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公共方法???????

???????? public void toggle ()

???????? 將單選按鈕更改為與當(dāng)前選中狀態(tài)相反的狀態(tài)。

???????? 如果這個(gè)單選按鈕已經(jīng)選中，這個(gè)方法將不切換單選按鈕。（譯者注：請(qǐng)看源碼：

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