Slide 1
Slide 1 text
涪䎃湡ך،فٔפך,PUMJO㼪Ⰵ
Slide 2
Slide 2 text
㹧♴畆㣐龤
$IBU8PSL吳䒭⠓爡
،فٔ؛٦ءّٝ涪鿇ث٦ئ٦ت٦
!SZVHPP@
Slide 3
Slide 3 text
$IBU8PSLחאְג
Slide 4
Slide 4 text
$IBU8PSL
㕂欵ךؽآطأثٍحز؟٦ؽأ
䎃剢ַ䲿⣘㨣
㼪Ⰵ爡侧
爡
䎃剢劣傈儗挿
䎃劣ח4DBMB㼪Ⰵ
1)1⢘欽׃גְֹתׅ
Slide 5
Slide 5 text
ؒٝآص،꧊⚥
J04"OESPJEؒٝآص،꧊⚥
匌❨ؔؿ؍أ㣐ꢻؔؿ؍أ
匌❨ؔؿ؍أכ剢ח匌❨ةٙ٦לח獳鯄
IUUQDPSQDIBUXPSLDPNKBSFDSVJUFOHJOFFS
Slide 6
Slide 6 text
$IBU8PSLךٌغ؎ٕ،فٔ
剑ⴱכ5JUBOJVN醡
+BWB4DSJQUדط؎ذ؍ـ6*䭯א،فָٔ⡲
3FBDU/BUJWFְזװאך饥
"OESPJE晛
䎃剢ַط؎ذ؍ـ⻉
J04晛
䎃剢ַط؎ذ؍ـ⻉
Slide 7
Slide 7 text
䎃剢
➂ד"OESPJEط؎ذ؍ـ晛ך涪㨣
䎃剢
,PUMJO⹈䓼⠓ח겣⳿ׅ
䎃剢
"OESPJEط؎ذ؍ـ晛ٔٔ٦أ
䎃
せ̔せ⡤ⵖח
䎃剢
,PUMJO醡ך傈㜠،فٔ爡ⰻ麊欽㨣
䎃剢
,PUMJOفٗتؙءّٝח㼪Ⰵ
Slide 8
Slide 8 text
ז,PUMJO㼪Ⰵׅךַ
Slide 9
Slide 9 text
,PUMJO㼪Ⰵ䚈ּ䗳銲כַ֮
䚈ָזֽלזזְ椚歋כזְ
,PUMJOׄׯזְה"OESPJE،فָٔ⡲זֻז
˘˘ֽדכזְ
ֻ֮תדⰕ䒭؟ه٦ز鎉铂ָ㟓ִֽ
؟ه٦زָ竰竲ׁ㸜䗰䠬䩛חⰅ
Slide 10
Slide 10 text
ד,PUMJO㼪Ⰵׅ椚歋
ؒٝآص،涸ז嚂׃ׁ
倜׃ְךח鍗ٌثك٦ءّٝ
ؒٝسِ٦ؠ٦ךًٔحزחז鎉铂堣腉
涪ח꧊⚥׃װְׅ
ن؎ٓ٦فٖ٦ز㼰זֻדֹ
膷ⰻךⳢ椚؎ً٦آ؝٦سח⿾僥׃װְׅ
"OESPJE涪鎉铂ה׃גⰕ䒭ח؟ه٦ز
涪ך䩛ָ姺תג׃תֲ〳腉䚍ָ嶊ִ
Slide 11
Slide 11 text
,PUMJOך㴍׃ְהֿ
Slide 12
Slide 12 text
ن؎ٓ٦فٖ٦ز幾ֿׅהָדֹ
-BNCEB䒭
ًاحسאֽ䭯א؎ٝة٦ؿؑ٦أ
4JOHMF"CTUSBDU.FUIPE5ZQF
-BNCEB䒭⢪גⱔꞿז鎸鶢ָ♶銲חז
+BWBךךה嫰鯰׃ג
䒷侧ָאד♶銲ז㜥さכ剅ַזֻג葺ְ
⢪זְ䒷侧כˑ@˒ד邌植
وآحؙؗ٦ٙ٦سˑJU˒
Slide 13
Slide 13 text
Button b = (Button) findViewById(R.id.button);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Your business logic
}
});
"OESPJE+BWB %FGBVMU
⼡せؙٓأ⢪גٔأش٦إحزׅךדن؎ٓ٦فٖ٦زָ㢳ְ
Slide 14
Slide 14 text
Button b = (Button) findViewById(R.id.button);
b.setOnClickListener(view —> {
// Your business logic
});
"OESPJE+BWB -BNCEB
4JOHMF"CTUSBDU.FUIPEכ-BNCEB䒭⢪ֲֿהדأحؗٔה剅ֽ
Slide 15
Slide 15 text
val b = findViewById(R.id.button) as Button
b.setOnClickListener { view ->
// Your business logic
}
b.setOnClickListener { _ ->
// No use args
}
b.setOnClickListener {
//“it” is View
}
,PUMJO
,PUMJOדずׄ״ֲח剅ֽ
⢪זְ䒷侧כ@ד邌ׅ
䒷侧ָאזל
ˑJU˒ؗ٦ٙ٦سד撑
ֿׅהדֹ
Slide 16
Slide 16 text
䙼罋⿾僥׃װְׅ鎉铂堣腉
أ؝٦فꟼ侧
知患ז鎸鶢ך䩛⸔ֽ׃גֻ
؎ً٦آ鸐ך؎ٝأةٝأך欰䧭ח⤑ⵃ
䭁䓸ꟼ侧
ְאךⳢ椚ًاحسך״ֲח䪔ִ
傀㶷ךؙٓأח،سنحؙחًاحس鷄⸇
JG䒭
USZ䒭
XIFO䒭
⦼鵤ֿׅהָדֹ
Slide 17
Slide 17 text
public static MyFragment newInstance(String str) {
MyFragment fragment = new MyFragment();
Bundle args = fragment.getArguments();
if (args == null) {
args = new Bundle();
}
args.putString(KEY_TEXT, str);
fragment.setArguments(args);
return fragment;
}
+BWB
葺ֻ֮ؿ؋ؙزٔػة٦ٝ
Slide 18
Slide 18 text
,PUMJO أ؝٦فꟼ侧
fun newInstance(str: String) = MyFragment().apply {
arguments = (arguments ?: Bundle()).apply {
putString(KEY_TEXT, str)
}
}
ˑBQQMZ˒כٖء٦غ「ֽ《גٖء٦غ鵤ׅ
➭חMFU
SVO
XJUI
BMTPָ֮䕵ⶴָ殯ז
Slide 19
Slide 19 text
,PUMJO أ؝٦فꟼ侧
var test: String? = null
var result: String = text ?: run {
// Some processing
"Hello, world"
}
ٕؒؽأ怴皾㶨ה穈さׇג䊩鴟ָOVMMך㜥さך⦼
⡦ַךⳢ椚ה穈さׇג《䖤דֹ
˟+BWB4DSJQUך⽯儗ꟼ侧䠬鋙
Slide 20
Slide 20 text
+BWB
public class StringUtils {
public static boolean isNothing(String text) {
return text == null || text.isEmpty();
}
}
OVMMתכ瑞俑㶵ַוֲַثؑحؙ׃ְ
Slide 21
Slide 21 text
,PUMJO DMBTT
PCKFDU
class StringUtils {
companion object {
fun isNothing(text: String?): Boolean {
return text == null || text.isEmpty()
}
}
}
object StringUtils {
fun isNothing(text: String?): Boolean {
return text == null || text.isEmpty()
}
}
TUBUJDًاحسך״ֲח鋅ׇ
ˑPCKFDU˒⢪גءؚٕٝزٝד㹀纏ׅ
Slide 22
Slide 22 text
,PUMJO 䭁䓸ꟼ侧
fun String.isNothing(): Boolean =
this == null || this.isEmpty()
var test: String? = null
test.isNothing() // true
㢌侧ך⚥魦ָˑOVMM˒ד/1&搀׃חثؑحָؙדֹ
Slide 23
Slide 23 text
תכծؽٕز؎ׁٝגְך⢪ֲ
@kotlin.internal.InlineOnly
public inline fun CharSequence?.isNullOrEmpty(): Boolean =
this == null || this.length == 0
俑㶵ךOVMMתכˑ瑞˒俑㶵ثؑحָؙדֹ
@kotlin.internal.InlineOnly
public inline fun CharSequence?.isNullOrBlank(): Boolean =
this == null || this.isBlank()
俑㶵ךOVMMתכˑ瑞涯˒俑㶵ثؑحָؙדֹ
Slide 24
Slide 24 text
+BWB JG俑
String text = "This is java";
String result;
if (text.length % 2 == 0) {
result = "Even";
} else {
result = "Odd";
}
JGˑ俑˒
㢌侧㹀纏ךة؎ىؚٝד
⦼然㹀דֹזְ
Slide 25
Slide 25 text
,PUMJO JG䒭
val text = "This is Kotlin"
val result = if (text.length % 2 == 0) {
"Even"
} else {
"Odd"
}
JGˑ䒭˒ה׃ג⦼鵤⽱ֿׅהָדֹךד
㢌侧㹑鎉儗ח⦼然㹀ׇׁ
JGFMTFぐـٗحؙך剑䖓ך遤ָ鐰⣣ׁ
Slide 26
Slide 26 text
+BWB TXJUDI俑
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
default:
return super.onOptionsItemSelected();
}
}
⢽ִלًصُ٦鼅䫛儗ךⳢ椚כ+BWBדכTXJUDI俑ד剅ֻֿהָ㢳ְ
TXJUDI俑דכ⦼鵤ֿׅהָדֹזְךד؝٦سָ撕꧟חזװְׅ
Slide 27
Slide 27 text
,PUMJO XIFO䒭
fun onOptionsItemSelected(item: MenuItem?): Boolean =
when(item?.itemId) {
android.R.id.home -> {
finish()
true
}
else -> super.onOptionsItemSelected()
}
,PUMJOחTXJUDI俑כזֻծ➿חXIFO䒭⢪ֲ
XIFO䒭כ⽃秪ז瘝⣣嫰鯰⟃㢩ח侧⦼ךٖٝآ䭷㹀װ㘗ثؑحؙ〳腉
Slide 28
Slide 28 text
㴍׃ְהָֿˑث٦ي˒חוֲ⸬ְגַֻ
ِ٦أ؛٦أ邌׃؝٦سחזװְׅ
搀꼽ָזְךד؝٦سٖؽُ٦ָװװְׅ
然钠ה䭷䶯ך怩ָ㼰זֻז
涪ה然钠ךٕ٦ف넝鸞⻉ֿׅהָדֹ
ِ٦ؠ٦פך⣣⦼䲿⣘ח꧊⚥דֹ
Slide 29
Slide 29 text
孡אְֽהֿ
Slide 30
Slide 30 text
,PUMJOח蕱ְהָֿ֮
ًاحس侧
ًاحسקו㟓ִ
Lًاحسⵖꣲחעאַ〳腉䚍ָ넝ת
"OOPUBUJPO1SPDFTTPS
BQQCVJMEHSBEMF
BOOPUBUJPO1SPDFTTPS̔LBQUח㢌ִ
LBQUָ欰䧭ׅ؝٦سח㉏겗ָֿ֮ה֮
Slide 31
Slide 31 text
וֲ㼪Ⰵ鹌גְַֻ
Slide 32
Slide 32 text
$IBU8PSL،فٔך植朐
،فٔך؝٦سك٦أכ䎃湡ח瑱Ⰵ
⢪גְ⚺זٓ؎ـٓٔ䪮遭
3FUSPMBNCEB
3Y+BWB
-JHIUXFJHIU4USFBN"1*
"OOPUBUJPO1SPDFTTPS
.VMUJEFY
Slide 33
Slide 33 text
וַֿ,PUMJO⢪ְ㨣ַ
Ⰻגך؝٦س,PUMJOחׅךכ⯓ָ黅ְ
鿇ⴓ涸ח,PUMJO⻉׃גְֻ
$IBU8PSLדכאך%JBMPH'SBHNFOUַ
הג⽃秪זت؎،ؚٗ
如ח傀㶷ך؝٦سא,PUMJO⻉
ثٍحزٕ٦يך⡲䧭٥刿倜ך"DUJWJUZ
ׁחך䖓ծ倜鋉堣腉؝٦س,PUMJOד鷄⸇
醱꧟זٗآحؙⰅגְ
Slide 34
Slide 34 text
וֲװגث٦يח嵴鷲ׇׁגְַֻ
,PUMJOأة٦زـحؙ
ˑ鸐獥饔ץֿ劤˒Ⰻ㆞飑Ⰵ׃ג䩛⯋ח縧ֻ
爡ⰻך,PUMJOثٍحزד㉔褏崞⹛
+BWBה,PUMJOד剅ְ㜥さך䊴䫎珲
فؙٕٔؒأزח铡僇؝ًٝز♨㻝ח鎸鶢
+BWBדְֲהֿך⡦ַ
,PUMJOך؎ر؍ؔيך铡僇
ٖؽُ٦䖓ثٍحزד椚鍑דַֹ然钠
Slide 35
Slide 35 text
No content
Slide 36
Slide 36 text
No content
Slide 37
Slide 37 text
ث٦ي㼪Ⰵך铬겗
Slide 38
Slide 38 text
ث٦يך稆㖑ה׃ג
כַׄ+BWBד؝٦س剅ְגְ
-BNCEB䒭䫺䫑זֻ「ֽⰅֿהָדֹ
-JHIUXFJHIU4USFBN"1*⢪גְ
0QUJPOBMך罋ִ倯ָ㕼〴ח֮ךדծ
/VMMBCMFUZQFT
/PO/VMMUZQFT
أحה麩ㄤ䠬זֻ《鴥ֿהָדֹ
穠卓ה׃ג
,PUMJOך؝٦سٖؽُ٦כ㉏겗זַ
Slide 39
Slide 39 text
ד
ث٦يⰋ㆞ָ,PUMJOغٔغٔ剅ֽגכְזְ
植㖈䩛ָֽגְ鿇ⴓך麩ְֽ֮ו
⡦וֿתד,PUMJOד剅ַֻכ㹀תגְזְ
ꬊず劍Ⳣ椚דBTZODBXBJU⢪גְַֻהַ
Ⰻ㆞ָ駈⚛䲧ִַוֲַ
铩ַ➂ָֽ,PUMJOח枠鹌׃גְֻ朐屣ָ
ث٦يחהגծמְגכِ٦ؠ٦ך⣣⦼חזַ
,PUMJOך؝٦س頾⫈ח׃גכְֽזְ
Slide 40
Slide 40 text
䩛ָֽכׄה׃ג
,PUMJO㼪Ⰵךח+BWBַ㨣ג葺ְַ
"OESPJE4UVEJPַכ㢩鿇خ٦ָٕ♶銲חז
"OESPJE(SBEMF1MVHJO
EFTVHBSخ٦ٕثؑ٦ٝ
-BNCEB䒭װًاحسٔؿ؋ٖٝأָ⢪ִ
傀㶷فٗآؙؑزח,PUMJO㼪Ⰵׅזל
㼭ֻׁ㨣
+BWBך؝٦سָ؎ً٦آדְֹּ㼭ׁזך
Slide 41
Slide 41 text
ֶ׃תְ