Android(安卓)UI系列-----CheckBox和RadioButton(1)

主要记录一下CheckBox多选框和RadioGroup、RadioButton单选框的设置以及注册监听器

1.CheckBox

布局文件：

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"tools:context=".MainActivity"><CheckBoxandroid:id="@+id/eatId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="吃饭"/><CheckBoxandroid:id="@+id/sleepId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="睡觉"/><CheckBoxandroid:id="@+id/playId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="玩游戏"/><CheckBoxandroid:id="@+id/allId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="全选"/></LinearLayout>

MainActivity：

publicclassMainActivityextendsActivity{privateCheckBoxeatBox;privateCheckBoxsleepBox;privateCheckBoxplayBox;privateCheckBoxallBox;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);eatBox=(CheckBox)findViewById(R.id.eatId);sleepBox=(CheckBox)findViewById(R.id.sleepId);playBox=(CheckBox)findViewById(R.id.playId);allBox=(CheckBox)findViewById(R.id.allId);//OnBoxClickListenerlistener=newOnBoxClickListener();//OnBoxCheckedListenerlistener2=newOnBoxCheckedListener();CheckedBoxListenerlistener3=newCheckedBoxListener();//eatBox.setOnClickListener(listener);//sleepBox.setOnClickListener(listener);//playBox.setOnClickListener(listener);eatBox.setOnCheckedChangeListener(listener3);sleepBox.setOnCheckedChangeListener(listener3);playBox.setOnCheckedChangeListener(listener3);allBox.setOnCheckedChangeListener(newOnCheckedChangeListener(){@OverridepublicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){eatBox.setChecked(isChecked);sleepBox.setChecked(isChecked);playBox.setChecked(isChecked);}});}classCheckedBoxListenerimplementsOnCheckedChangeListener{privateintcount=0;@OverridepublicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){if(isChecked){count++;if(count==3){allBox.setChecked(isChecked);}}else{count--;allBox.setChecked(isChecked);}}}@OverridepublicbooleanonCreateOptionsMenu(Menumenu){//Inflatethemenu;thisaddsitemstotheactionbarifitispresent.getMenuInflater().inflate(R.menu.main,menu);returntrue;}//CheckBox点击监听器classOnBoxClickListenerimplementsOnClickListener{@OverridepublicvoidonClick(Viewview){CheckBoxbox=(CheckBox)view;if(box.getId()==R.id.eatId){System.out.println("eatBox");}elseif(box.getId()==R.id.sleepId){System.out.println("sleepBox");}elseif(box.getId()==R.id.playId){System.out.println("playBox");}if(box.isChecked()){System.out.println("Boxischecked");}else{System.out.println("BoxisunChecked");}System.out.println("CheckBoxisclicked!");}}//CheckBox状态改变监听器classOnBoxCheckedListenerimplementsOnCheckedChangeListener{@OverridepublicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){CheckBoxbox=(CheckBox)buttonView;if(box.getId()==R.id.eatId){System.out.println("eatBox");}elseif(box.getId()==R.id.sleepId){System.out.println("sleepBox");}elseif(box.getId()==R.id.playId){System.out.println("playBox");}if(isChecked){System.out.println(box.getText()+"ischecked!");}else{System.out.println(box.getText()+"isunchecked!");}}}}

2.RadioGroup和RadioButton

RadioGroup中可以放置多个RadioButton单选框，位于同一RadioGroup中的RadioButton每次只能选择一个

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity"><RadioGroupandroid:id="@+id/radioGroupId1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><RadioButtonandroid:id="@+id/femailButtonId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="女"/><RadioButtonandroid:id="@+id/maleButtonId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="男"/></RadioGroup><RadioGroupandroid:id="@+id/raidoGroupId2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><RadioButtonandroid:id="@+id/womenButtonId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="women"/><RadioButtonandroid:id="@+id/manButtonId"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="man"/></RadioGroup></LinearLayout>

MainActivity：

publicclassMainActivityextendsActivity{privateRadioGroupradioGroup;privateRadioButtonfemaleRadio;privateRadioButtonmaleRadio;privateRadioGroupradioGroup2;privateRadioButtonwomenRadio;privateRadioButtonmanRadio;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);radioGroup=(RadioGroup)findViewById(R.id.radioGroupId1);femaleRadio=(RadioButton)findViewById(R.id.femailButtonId);maleRadio=(RadioButton)findViewById(R.id.maleButtonId);radioGroup2=(RadioGroup)findViewById(R.id.raidoGroupId2);womenRadio=(RadioButton)findViewById(R.id.womenButtonId);manRadio=(RadioButton)findViewById(R.id.manButtonId);RadioGroupListenerlistener=newRadioGroupListener();radioGroup.setOnCheckedChangeListener(listener);radioGroup2.setOnCheckedChangeListener(listener);}classRadioGroupListenerimplementsOnCheckedChangeListener{@OverridepublicvoidonCheckedChanged(RadioGroupgroup,intcheckedId){if(checkedId==femaleRadio.getId()||checkedId==womenRadio.getId()){womenRadio.setChecked(true);femaleRadio.setChecked(true);System.out.println("femaleRadioischeched!");}elseif(checkedId==maleRadio.getId()||checkedId==manRadio.getId()){manRadio.setChecked(true);maleRadio.setChecked(true);System.out.println("maleRadioischecked!");}}}classRadioButtonListenerimplementsandroid.widget.CompoundButton.OnCheckedChangeListener{@OverridepublicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){if(isChecked){System.out.println("RadioButtonischecked!");}}}@OverridepublicbooleanonCreateOptionsMenu(Menumenu){//Inflatethemenu;thisaddsitemstotheactionbarifitispresent.getMenuInflater().inflate(R.menu.main,menu);returntrue;}}

注意：我们可以给RadioGroup注册一个OnCheckedChangeListener，引用的是android.widget.RadioGroup.OnCheckedChangeListener这个包下的监听器，其里面的方法是：

onCheckedChanged(RadioGroupgroup,(checkedId==femaleRadio.getId()||checkedId=="femaleRadioischeched!"(checkedId==maleRadio.getId()||checkedId=="maleRadioischecked!"

而我们还可以给每个RadioButton注册一个OnCheckedChangeListener，但是这里就要使用android.widget.CompoundButton.OnCheckedChangeListener 这个监听器类，其里面的方法：

"RadioButtonischecked!"

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