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AI ツールを活用したコードリーディング - Android の公式サンプル Now in A...
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Yuki Anzai
September 20, 2025
Technology
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AI ツールを活用したコードリーディング - Android の公式サンプル Now in Android のソースコードを読んでみよう - / Code reading with AI tools
GDG on Campus Japan Convention 2025
https://gdsc-jp.connpass.com/event/361579/
Yuki Anzai
September 20, 2025
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Transcript
͋Μ͍͟Ώ͖ (@yanzm) "*πʔϧΛ׆༻ͨ͠ίʔυϦʔσΟϯά "OESPJEͷެࣜαϯϓϧ/PXJO "OESPJEͷιʔείʔυΛಡΜͰΈΑ͏ 1 2025.9.20 GDG on Campus
Japan Convention 2025
:VLJ"O[BJ w "OESPJE&OHJOFFS w (PPHMF%FWFMPQFS&YQFSUGPS"OESPJE w 9 UXJUUFS !ZBO[N w
CMPHZBO[NCMPHTQPUDPN w גࣜձࣾϑΟΧදऔక w ࡳຈɾؔ౦ڌੜ׆ 2
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"OESPJEΞϓϦ։ൃʹඞཁͳͷ w "OESPJE4UVEJP w *%& *OUFHSBUFE%FWFMPQNFOU&OWJSPONFOU౷߹։ൃڥʣ w ίʔυΛॻ͍ͨΓɺσόοάͨ͠ΓɺϓϩάϥϜΛίϯύΠϧͯ͠ΞϓϦΛ ࣮ߦͨ͠Γ͢ΔͨΊͷιϑτ w
ʢ࣮ػσόΠεʣ w ͋Εָ͍͚͠Ͳɺͳͯ͘ΤϛϡϨʔλͰ࣮ߦՄೳ 4
"OESPJE4UVEJP 5
"OESPJE4UVEJP w IUUQTEFWFMPQFSBOESPJEDPNTUVEJP 6
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9 My Application com.example.myapplication
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"OESPJE4UVEJPͰJ04ΞϓϦ࡞ΕΔʁ w ,PUMJO.VMUJQMBUGPSN w "OESPJE J04 %FTLUPQ 8FCͳͲෳͷϓϥοτϑΥʔϜͷΞϓϦΛ୯ Ұͷ,PUMJOίʔυ͔Β࡞͢ΔϑϨʔϜϫʔΫ w
$PNQPTF.VMUJQMBUGPSN w $PNQPTFͱ͍͏ϑϨʔϜϫʔΫΛͬͯ6*෦ಉ͡,PUMJOίʔυ Ͱ࡞Ͱ͖Δ 17
$PNQPTF.VMUJQMBUGPSN1MVHJO 18
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"OESPJE4UVEJPͰ (FNJOJػೳΛ͏ 25
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"OESPJE4UVEJPͷ(FNJOJϞʔυ w (FNJOJGPSJOEJWJEVBMT w ແྉ w ίϯςΩετʢίʔυϓϩϯϓτ ͳͲʣ͕Ϟσϧͷֶशʹར༻͞ΕΔ Մೳੑ͕͋Δ w
(FNJOJGPSCVTJOFTTFT w ༗ྉ w ίϯςΩετ͕Ϟσϧͷֶशʹར༻ ͞Εͳ͍ 28 Android Studio Ͱ Google ΞΧϯτΛ Sign Out ͯ͠ ࠶ىಈ͢ΕબͼͤΔ
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(FNJOJͷઃఆ w <4FUUJOHT>ˠ<5PPMT>ˠ<(FNJOJ> 31
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(FNJOJ w (FNJOJͷ"1*LFZΛઃఆ ͢Δ͜ͱͰ$IBUͱ"HFOU Ͱ(FNJOJܥΛ͏͜ͱ ͕Ͱ͖Δ 33
(FNJOJ"1*Ωʔ w (PPHMF"*4UVEJPͰऔಘՄೳIUUQTBJTUVEJPHPPHMFDPNBQJLFZ 34 https://ai.google.dev/gemini-api/docs/rate-limits?hl=ja#current-rate-limits
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$IBU 36
"HFOU 37
/PXJO"OESPJE 38
/PXJO"OESPJE w "OESPJEެࣜͷαϯϓϧΞϓϦ w (JUIVCʹϗετ͞Ε͍ͯΔ w IUUQTHJUIVCDPNBOESPJEOPXJOBOESPJE 39
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·ͣΞϓϦΛϏϧυͯ͠৮ͬͯΈΔ w (PPHMF1MBZ͔ΒΠϯετʔϧ͢Δ͜ͱՄೳ 42
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$IBUͱ"HFOU w ʢࠓͷͱ͜Ζʣηογϣϯͱ͍͏୯Ґ͕ͳ͍ w ձཤྺΛফ͢ͱɺաڈͷձཤྺ͕ΈΕͳ͍ w "HFOUϞʔυΛͬͯௐͯΒͬͨ͜ͱϑΝΠϧʹग़ྗͯ͠Β͏΄͏ ͕Α͍ 44
ԿΛ࣭͢Δ͖͔ʁ w Ͳ͏͍͏ߏͷϓϩδΣΫτͳͷ͔ w ͲΜͳػೳ͕͋Δͷ͔ w ͲΜͳ6*͕͋Δͷ͔ w ͲΜͳϥΠϒϥϦΛ͍ͬͯΔͷ͔ w
ىಈ࣌ͷॲཧͷྲྀΕͲ͏ͳ͍ͬͯΔ͔ w ը໘ભҠͲͷΑ͏ʹ࣮ݱ͍ͯ͠Δͷ͔ w ͲͷΑ͏ʹσʔλΛऔಘ͍ͯ͠Δͷ͔ 45
ϞσϧʹΑΔग़ྗͷҧ͍ΛΈͯΈΑ͏ w ϓϩδΣΫτͷߏʹ͍ͭͯௐͯNZ@NFNPQSPKFDU@TUSVDUVSFNEʹ· ͱΊ͍ͯͩ͘͞ɻ w ϓϩδΣΫτͷओཁͳϞδϡʔϧʹ͍ͭͯௐͯNZ@NFNP QSPKFDU@TUSVDUVSFNEʹه͍ͯͩ͘͠͞ɻ w ༻͞Ε͍ͯΔϥΠϒϥϦʹ͍ͭͯௐͯANZ@NFNPMJCSBSJFTNEAʹهࡌ ͍ͯͩ͘͠͞ɻͦΕͧΕͲΜͳϥΠϒϥϦͳͷ͔؆୯ͳઆ໌͍Εͯͩ͘͞
͍ɻ w 'PS:PVʹදࣔ͞ΕΔσʔλͲ͔͜ΒͲͷΑ͏ʹऔಘ͞Ε͍ͯ·͔͢ʁ 46
୳ࡧతϦϑΝΫλϦϯά w ػೳΛՃͨ͠ΓɺϦϑΝΫλϦϯά͢ΔతͰίʔυΛಡΉ w #PUUPN/BWJHBUJPOʹ߲ΛՃͯ͠ΈΔ w ը໘ભҠͷΞχϝʔγϣϯΛม͑ͯΈΔ w ΞΠίϯΛมߋͯ͠ΈΔ 47
$POUFYUͱͯ͠ը૾Λఴͯ͠ΈΑ͏ w ઢͰғΜͰ͍ΔΞΠίϯΛมߋ͍ͨ͠Ͱ͢ɻ Ͳ͜Λมߋ͢ΕΑ͍Ͱ͔͢ʁ 48
·ͱΊ w "OESPJE4UVEJPʹϏϧτΠϯͷ(FNJOJػೳ͕͋Δ w "HFOUػೳͳΒௐࠪ݁ՌΛϑΝΠϧʹ·ͱΊͯΒ͏͜ͱ͕Ͱ͖Δ w ͍͍ίʔυΛॻͨ͘Ίʹ͍͍ίʔυΛͨ͘͞ΜಡΉ͜ͱ͕ॏཁ w "*πʔϧʹΘ͔Βͳ͍͜ͱΛͲΜͲΜ࣭ͯ͠ΈΑ͏ 49