中軟安卓-android周考試題

2016-07-29-107Android班JavaSE基礎(chǔ)_5_答 2、顯示啟動(dòng)、隱式啟動(dòng)3、standard、singleTask、singleTop、<style<item5、Activity運(yùn)行態(tài)（Running）Activity暫停態(tài)（Paused）Activity被置于用戶可見，但失去了焦點(diǎn)停止態(tài)（Stopped）ActivityActivity終止態(tài)（Destroyed）Activity被系統(tǒng)終止，資源被回收 、Paused、 、 1LinuxJava運(yùn)行時(shí)環(huán)境、應(yīng)用程序框架、應(yīng)用3、 這時(shí)A頁面顯示，突然按HOME鍵，activityA>>>>onPause()>>>>onStop()activityA處于暫停狀態(tài)AB頁面activityA>>>>onPause(),然后activityB>>>>onCreate()>>>>onStart()>>>>onResume() 時(shí)B頁面顯示，activityA>>>>onStop()此時(shí)A頁面處于暫停狀態(tài)，BAactivityB>>>>onPause(),activityA>>>>onRestart()>>>>onStart()>>>>onResume()A頁面顯示，activityB>>>>onStop()>>>>onDestory(),B頁面銷毀4、（此題為參考答案，大致意思對(duì)都可以standardActivity時(shí)(startActivity)Activity實(shí)例，并放入任務(wù)棧；ActivityActivityActivity的特點(diǎn)是：只要ActivityActivityActivity實(shí)例在任務(wù)ActivityActivityActivitypop；如果任務(wù)棧中存在該ActivityActivity實(shí)例全部移除，調(diào)用該實(shí)例的singleInstance1的任務(wù)棧中創(chuàng)建了MainActivity2也要激MainActivityActivityActivity實(shí)例在任務(wù)Activity，都會(huì)通過調(diào)用四、程序題（參考答案<style<item<item<LinearLayoutxmlns:android="http://s android:orientation="horizontal"> tools:context=".MainActivity">android:textSize="50sp"/>packageimportjava.util.List;importandroid.app.Activity;importandroid.os.Bundle;importandroid.view.View;importandroid.widget.AdapterView;importandroid.widget.AdapterView.OnItemClickListener;importandroid.widget.ArrayAdapter;importandroid.widget.Button;importandroid.widget.Spinner;publicclassMainActivityextendsActivityimplementsOnClickListener//privateSpinnersp_1,sp_2,////privateList<String>list_1,list_2,publicStringstr1,str2,str3;publicButtonbutton;protectedvoidonCreate(BundlesavedInstanceState){////}privatevoidinitView()sp_1=(Spinner)findViewById(R.id.spinner_id_1);sp_2=(Spinner)findViewById(R.id.spinner_id_2);sp_3=(Spinner)findViewById(R.id.spinner_id_3);button=(Button)findViewById(R.id.button1);}privatevoidinitData()//list_1=newArrayList<String>();list_2=newArrayList<String>();list_3=new////list}//1//2//3}//adpterlistadapteradapter_1=newArrayAdapter<String>(this,adapter_2=newArrayAdapter<String>(this,adapter_3=newArrayAdapter<String>(this,//下拉框//adapterspinner中去publicvoidonItemSelected(AdapterView<?>parent,Viewview,intposition,longid){str3=}//TODOAuto-generatedmethod}publicvoidonItemSelected(AdapterView<?>parent,Viewview,intposition,longid){str2=}//TODOAuto-generatedmethod}//spinneritempublicvoidonItemSelected(AdapterView<?>parent,Viewview,intposition,longid){//str1=//switch((int)id)//case//Intentintent=new////////case//Intentintent1=new////////case//Intentintent2=new////////case//Intentintent3=new////////////}}

}publicvoidonClick(Viewv){switch(v.getId()){case//Intentintent=newIntent(MainActivity.this,NewActivity.class);intent.putExtra("list_1",str1);}}}<RelativeLayoutxmlns:android="http://s tools:context=".MainActivity"android:padding="0.3dp">android:padding="5dp">android:layout_height="wrap_content"/>android:padding="5dp">android:layout_height="wrap_content"/>android:padding="5dp">android:layout_height="wrap_content"/>android:text="選擇完畢"/>另一個(gè)packageimportandroid.app.Activity;importandroid.content.Intent;importandroid.os.Bundle;importandroid.widget.TextView;publicclassNewActivityextendsActivitypublicTextViewtext_view_1,text_view_2,protectedvoidonCreate(BundlesavedInstanceState)//TODOAuto-generatedmethodstubtext_view_1=(TextView)findViewById(R.id.text_view_id_1);text_view_2=(TextView)findViewById(R.id.text_view_id_2);text_view_3=(TextView)findViewById(R.id.text_view_id_3);Intentintent=getIntent();Stringlist11=intent.getStringExtra("list_1");Stringlist22=intent.getStringExtra("list_2");Stringlist33=intent.getStringExtra("list_3");}}對(duì)應(yīng)布局文件<?xmlversion="1.0"encoding="utf-<LinearLayoutxmlns:android="http://s android:orientation="vertical" "/> "/> "/>importjava.util.List;importcom.pb.android_107_6_03_test.R;importandroid.content.Context;importimportandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.Button;importandroid.widget.TextView;publicclassMyAdapterextendsBaseAdapter//本地化（MyAdapter）publicList<String>list=////publicMyAdapter(Contextcontext,List<String>list){this.list=list;//inflater=}//返回集合的長(zhǎng)度（數(shù)據(jù)源的長(zhǎng)度publicintgetCount()return}//itempublicObjectgetItem(intposition){returnlist.get(position);}publiclonggetItemId(intposition){returnposition;}判斷convertViewitem（是否為空，為空則創(chuàng)建新的對(duì)象，不為空則不創(chuàng)建新的convertView對(duì)象//一個(gè)內(nèi)部類對(duì)象ViewHolderholdernull;if(convertView==null){//holder=new//創(chuàng)建convertView(視圖)Log.d("創(chuàng)建convertView的次數(shù)", Log.d("創(chuàng)建text的次數(shù)", Log.d("創(chuàng)建button的次數(shù)","findViewById //XML}else//holder=(ViewHolder)}returnconvertView;}//staticclassViewHolder{TextViewtext;Buttonbutton;}}packageimportjava.util.List;importandroid.app.Activity;importandroid.os.Bundle;publicclassMainActivityextendsActivity{publicListViewlist_vie