單元小測(cè)開(kāi)卷

開(kāi)卷試題1知識(shí)點(diǎn)：第一章請(qǐng)寫出該圖片中的“請(qǐng)輸入密碼”布局代碼其中：布局寬度320sp,布局高度48sp,布局上邊距20sp,左內(nèi)邊距10sp.代碼框架：請(qǐng)?zhí)顚懠t色下劃線中的代碼片段（共6處）<EditText android:id=“@+id/login_password” _____________________________//布局寬度_____________________________//布局高度_____________________________//布局居中_____________________________//布局上外邊距android:background=“@drawable/login_div_bg”android:ems=“10”android:inputType=“textPersonName”_____________________________//左內(nèi)邊距_____________________________//文本內(nèi)容 />開(kāi)卷試題2知識(shí)點(diǎn)：第二章請(qǐng)寫出該圖片中的部分Activity代碼其中：當(dāng)我們輸入密碼“123456”時(shí)，會(huì)提示密碼正確，否則提示密碼錯(cuò)誤。代碼框架：請(qǐng)?zhí)顚懠t色下劃線中的代碼片段（共10處）LinearLayoutlogin;@OverridepublicvoidonClick(Viewv){ AlertDialog.Builderdialog=newAlertDialog.Builder(DialogActivity.this); dialog.setTitle(__________);dialog.setIcon(R.drawable.icon);dialog.setMessage(__________);dialog.setPositiveButton(____,newloginClick());dialog.setNegativeButton(____,newexitClick());login=(__________)this.getLayoutInflater().inflate(R.layout.login,null);dialog.setView(login);}class________implementsDialogInterface.OnClickListener{@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){EditTextpassEdit=login.________(R.id.passEdit);Stringstr=passEdit.getText().toString();if(__________)Toast.makeText(DialogActivity.this,"密碼正確",Toast.LENGTH_SHORT).show();elseToast.makeText(DialogActivity.this,"密碼錯(cuò)誤",Toast.LENGTH_SHORT).show();dialog.dismiss();}}class________implementsDialogInterface.OnClickListener{@OverridepublicvoidonClick(DialogInterfacedialog,intwhich){DialogActivity.________.finish();}}開(kāi)卷試題3知識(shí)點(diǎn)：第三章請(qǐng)寫出該圖片中的部分Activity代碼其中：當(dāng)我們點(diǎn)擊播放按鈕，能夠正常播放音樂(lè)；當(dāng)我們點(diǎn)擊暫停按鈕，能夠正常暫停音樂(lè)。代碼框架：請(qǐng)?zhí)顚懠t色下劃線中的代碼片段（共8處）ImageButtonStart,Stop;MediaPlayermp;classmStartimplements__________{@OverridepublicvoidonClick(Viewv){try{if(__________){/*播放按鈕事件*/__________Toast.makeText(Localmp3Activity.this,"播放音樂(lè)",Toast.LENGTH_LONG).show();Start.setImageResource(R.drawable.music_pause);}else{/*暫停按鈕事件*/mp.pause();__________.makeText(Localmp3Activity.this,"暫停播放音樂(lè)",Toast.LENGTH_LONG).show();Start.setImageResource(R.drawable.music_play);}}catch(Exceptione){e.printStackTrace();}}}classmStopimplementsView.OnClickListener{@OverridepublicvoidonClick(Viewv){/*停止按鈕事件，停止播放音樂(lè)（不是退出app）*/__________try{mp=MediaPlayer._______(Localmp3Activity.this,R.raw.abc);mp.setLooping(________);Toast.makeText(Localmp3Activity.this,"停止播放音樂(lè)",Toast.LENGTH_LONG).show();}catch(Exceptione){e.printStackTrace();}________.setImageResource(R.drawable.music_play);}}開(kāi)卷試題4知識(shí)點(diǎn)：第四章請(qǐng)寫出該圖片中的部分Activity代碼其中：當(dāng)我們點(diǎn)擊啟動(dòng)時(shí)，會(huì)正常啟動(dòng)后臺(tái)服務(wù)程序；當(dāng)我們點(diǎn)擊關(guān)閉時(shí)，會(huì)正常銷毀后臺(tái)服務(wù)程序。代碼框架：請(qǐng)?zhí)顚懠t色下劃線中的代碼片段（共8處）publicclassMusicServiceextends__________{MediaPlayerplay;@OverridepublicIBinderonBind(Intentintent){returnnull;}@OverridepublicvoidonCreate(){super.__________();//創(chuàng)建調(diào)用資源音樂(lè)文件對(duì)象play=MediaPlayer.________(this,R.raw.abc);//設(shè)置循環(huán)播放play.__________(true);Toast.makeText(this,"創(chuàng)建后臺(tái)服務(wù)...",Toast.LENGTH_LONG).show();}@OverridepublicintonStartCommand(Intentintent,intflags,intstartId){super.__________(intent,flags,startId);________.start();//開(kāi)始播放音樂(lè)Toast.makeText(this,"啟動(dòng)后臺(tái)服務(wù)程序，播放音樂(lè)...",Toast.LENGTH_LONG).show();returnSTART_STICKY;//粘性的,如果service進(jìn)程被kill掉，保留service的狀態(tài)為開(kāi)始狀態(tài)，}@OverridepublicvoidonDestroy(){play.__________();super.__________();Toast.makeText(this,"銷毀后臺(tái)服務(wù)！",Toast.LENGTH_LONG).show();}}開(kāi)卷試題5知識(shí)點(diǎn)：第五章布局不做任何改變，需要考生補(bǔ)全代碼（共3處），實(shí)現(xiàn)以下功能：點(diǎn)擊“插入三條記錄”按鈕實(shí)現(xiàn)插入三條記錄。點(diǎn)擊“查詢數(shù)據(jù)記錄”按鈕實(shí)現(xiàn)查詢所有記錄。publicclassDB3ActivityextendsAppCompatActivity{Buttoncreatedb,deletedb,queryBtn,deleteItemBtn,insertBtn;TextViewtxt;MySQLDatabasemyc;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.diarydb);createdb=(Button)findViewById(R.id.createdb);deletedb=(Button)findViewById(R.id.deletedb);queryBtn=(Button)findViewById(R.id.querydb);deleteItemBtn=(Button)findViewById(R.id.deleteItemBtn);insertBtn=(Button)findViewById(R.id.insertdb);txt=(TextView)findViewById(R.id.txt);createdb.setOnClickListener(newmClick());deletedb.setOnClickListener(newmClick());queryBtn.setOnClickListener(newmClick());deleteItemBtn.setOnClickListener(newmClick());insertBtn.setOnClickListener(newmClick());myc=newMySQLDatabase();}classmClickimplementsView.OnClickListener{@OverridepublicvoidonClick(Viewview){if(view==createdb){myc.CreateDB(DB3Activity.this);txt.setText("創(chuàng)建數(shù)據(jù)庫(kù)成功");}elseif(view==deletedb){myc.deleteDB();txt.setText("刪除數(shù)據(jù)庫(kù)成功");}elseif(view==queryBtn){（5-3）}elseif(view==deleteItemBtn){myc.deleteItem();txt.setText("刪除數(shù)據(jù)記錄成功");}elseif(view==insertBtn){myc.insertItem();txt.setText("添加數(shù)據(jù)記錄成功");}}}}publicclassMySQLDatabase{privatestaticfinalStringDatabase_name="eBook.db";//數(shù)據(jù)庫(kù)名privatestaticfinalStringTABLE_NAME="diary";//數(shù)據(jù)表名privatestaticfinalStringID="nid";//ID編號(hào)privatestaticfinalStringTITLE="title";//標(biāo)題privatestaticfinalStringBODY="body";//正文privatestaticfinalintDatabase_Version=1;privateSQLiteDatabasedb;privateContextcontext;privateDatabaseHelpermyOpenHelper;/**創(chuàng)建數(shù)據(jù)庫(kù)*/publicvoidCreateDB(Contextc){context=c;myOpenHelper=newDatabaseHelper(context);try{intmode=Context.MODE_PRIVATE;//創(chuàng)建數(shù)據(jù)庫(kù)db=context.openOrCreateDatabase(Database_name,mode,null);//SQL語(yǔ)句StringDATABASE_CREATE="CREATETABLEIFNOTEXISTS"+TABLE_NAME+"("+ID+"INTEGERprimarykeyautoincrement,"+TITLE+"textnotnull,"+BODY+"textnotnull);";db.execSQL(DATABASE_CREATE);//創(chuàng)建數(shù)據(jù)表Log.i("SQLite","創(chuàng)建數(shù)據(jù)庫(kù)成功");}catch(SQLExceptione){Log.i("SQLite","創(chuàng)建數(shù)據(jù)庫(kù)失敗");}}/**刪除數(shù)據(jù)庫(kù)*/publicvoiddeleteDB(){try{context.deleteDatabase(Database_name);Log.i("SQLite","刪除數(shù)據(jù)庫(kù)成功");}catch(SQLExceptione){Log.i("SQLite","刪除數(shù)據(jù)庫(kù)失敗");}}/**每次插入3條數(shù)據(jù)*/publicvoidinsertItem(){try{ContentValuesvalues=newContentValues();values.put("TITLE","Android");values.put("BODY","發(fā)展真是迅速啊");db.insert(TABLE_NAME,ID,values);values.put("TITLE","城市");values.put("BODY","發(fā)展真是迅速啊");db.insert(TABLE_NAME,ID,values);（5-1）Log.i("SQLite","插入三條數(shù)據(jù)成功");}catch(SQLExceptione){Log.i("SQLite","插入三條數(shù)據(jù)失敗");}}/**刪除符合條件的數(shù)據(jù)*/publicvoiddeleteItem(){try{db.delete(TABLE_NAME,"TITLE='城市'",null);Log.i("SQLite","刪除數(shù)據(jù)成功");}catch(SQLExceptione){Log.i("SQLite","刪除數(shù)據(jù)失敗");}}/**查詢數(shù)據(jù)表*/publicList<String>showItems(){try{String[]col={TITLE,BODY};Cursorcursor=db.query(TABLE_NAME,col,null,null,null,null,null);Integernum=cursor.getCount();Stringstr="";（5-2）returnresult;}catch(SQLExceptione){Log.i("SQLite","查詢數(shù)據(jù)失敗");}returnnull;}privateclassDatabaseHelperextendsSQLiteOpenHelper{publicDatabaseHelper(Contextcontext){super(context,Database_name,null,Database_Version);}@OverridepublicvoidonCreate(SQLiteDatabasesqLiteDatabase){}@OverridepublicvoidonUpgrade(SQLiteDatabasesqLiteDatabase,inti,inti1){}}}

開(kāi)卷試題6知識(shí)點(diǎn)：第六章布局增加“第一張”按鈕，需要考生補(bǔ)全代碼（共3處），實(shí)現(xiàn)以下功能：按鈕的聲明以及監(jiān)聽(tīng)；實(shí)現(xiàn)跳轉(zhuǎn)到第一張圖片功能。publicclassPhotoActivityextendsAppCompatActivityimplementsView.OnClickListener{ImageViewimg;(6-1)int[]imgs={//存放圖片索引的int數(shù)組R.drawable.pic0,R.drawable.pic1,R.drawable.pic2};intindex=1;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.layout_photo);img=(ImageView)findViewById(R.id.img);(6-2)}@OverridepublicvoidonClick(Viewview){(6-3)}}開(kāi)卷試題7

知識(shí)點(diǎn)：第七章布局增加搜索框，需要考生補(bǔ)全代碼（共3處），實(shí)現(xiàn)以下功能：搜索框輸入城市id為101010100，點(diǎn)擊按鈕，搜索出結(jié)果顯示到屏幕。結(jié)果呈現(xiàn)格式如上圖所示。publicclassWeatherActivityextendsAppCompatActivityimplementsView.OnClickListener{ButtonBtn;TextViewtxt;EditTextid;//Stringurl="/data/cityinfo/101010100.html";//目標(biāo)網(wǎng)址樣式Stringurl="/data/cityinfo/";//北京id：101010100@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_volley);Btn=(Button)findViewById(R.id.btn);（7-1）}@OverridepublicvoidonClick(Viewv){（7-2）JsonObjectRequeststringRequest=newJsonObjectRequest(//第1個(gè)參數(shù)，目標(biāo)服務(wù)器的URL地址url,//第2個(gè)參數(shù),JSONObjectnull,//第3個(gè)參數(shù)，服務(wù)器響應(yīng)成功的回調(diào)newResponse.Listener<JSONObject>(){@OverridepublicvoidonResponse(JSONObjectresponse){try{JSONObjectmjson=response.getJSONObject("weatherinfo");//Jason數(shù)據(jù)的鍵值對(duì)的鍵keyStringcity=mjson.getString("city");（7-3）}catch(JSONExceptione){