Recommended
More Related Content
Similar to AndroidでGIFアニメ 2014.08.06 Kyoto.LT
Similar to AndroidでGIFアニメ 2014.08.06 Kyoto.LT (7)
AndroidでGIFアニメ 2014.08.06 Kyoto.LT
- 1. Androidד! GIF،صً ء٦؟٦吳䒭⠓爡! 啾腜խ翯㣕
- 2. 啾腜խ翯㣕! Shota Moriwaki! ! ء٦؟٦吳䒭⠓爡խ❨鿪ⴓ㹓! ٌغ؎ٕأُ٦ءّٝ✲噟鿇! أو٦زؿؓٝ،فٔؒٝآص،
- 3. GIFחאְג What is GIF?
- 4. GIF! Graphics Interchange Format չآؿպ ،ًٔؕך鸐⥋⠓爡CompuServeָ涪 GIF87aהGIF89aך2珏겲ך鋉呓 GIF،صًכGIF89a 256葿תד LZW،ٕ؞ٔؤيד㖇簭
- 5. GIFך圓鸡 GIF Header GIFךغ٦آّٝ鋉呓װ歗⫷ך؟؎ؤծ⢪欽ׁגְ葿䞔㜠זו! ؿ؋؎ٕⰋ⡤ך䞔㜠 Image Block 歗⫷ر٦ة Graphic Control Extension 鷲麓Ⳣ椚ך剣搀זו歗⫷חꟼׅ➰⸇䞔㜠
- 6. Application Extension ٕ٦ف㔐侧זוGIF،صًחꟼׅ➰⸇䞔㜠 Comment Extension ؝ًٝزر٦ة Plain Text Extension ذؗأزر٦ة Trailer ؿ؋؎ٕך穄✪邌ׅر٦ة
- 7. GIF87a GIF Header Image Block Trailer GIF89a GIF Header Graphic Control Extension Image Block Trailer GIF،صً GIF Header Application Extension Graphic Control Extension Image Block Graphic Control Extension Image Block ・・ ・ Graphic Control Extension Image Block Trailer
- 8. Androidד! 邌爙ׅחכ How to show animated gif on android device?
- 9. הִ֮׆! 兛鸐ח铣鴥 Try to decode animated gif like other file
- 10. 歗⫷ؿ؋؎ٕBitmapؙٓأח㢌䳔ׅ! ! BitmapFactory.decodeByteArray(byte[]data, int offset, int length) BitmapFactory.decodeFile(String pathName)! BitmapFactory.decodeResource(Resources res, int id) BitmapFactory.decodeStream(InputStream is) ! 㼎韋ؿؓ٦وحزכPNGծJPGծGIF! זח䊩ַ䱿㤺ׁ갫! “A bitmap image. Android supports bitmap files in a three formats: .png (preferred), .jpg (acceptable), .gif (discouraged).’’ http://developer.android.com/guide/topics/resources/drawable-resource.html#Bitmap GIF،صً铣鴥㜥さծ剑ⴱך歗⫷כ邌爙ָׁ! ،صً٦ءָّٝⱄ欰ׁזְ
- 11. WebView⢪ֲ Try to use android.webkit.WebView
- 13. Movie⢪ֲ Try to use android.graphics.Movie
- 14. 知⽃! ֽו! 輐鸐ַָֹזְ غָؚ֮
- 15. GIFⴓ鍑ׅ Try to decode animated gif file
- 16. ٓ؎ـָ֮ٓٔ
- 17. android-gifview! https://code.google.com/p/android-gifview/ GifDecoder.java! GIF،صً؝و׀הךBitmapחⴓ鍑ؙׅٓأ GifView! ⴓ鍑ׁBitmap鸬竲ד䲽歗ؙׅٓأ! ! 傈劤➂ך倯ָ⡲ٓ؎ـٓٔדծGifDecoder.javaכGoogle+ך! ،فٔⰻד⢪גְ׃ְדׅկ
- 18. 知⽃! ֽו! ظ؎ؤָⰅGIFָ֮ ׳הꅾְ孡ָׅ
- 19. GifDecoder.java! ⥜姻ׅ Try to fix GifDecoder.java
- 20. GifDecoder.java 1. GIFؿ؋؎ٕךغ؎شٔر٦ة鍑匿 2. GifHeaderַ歗⫷ך؟؎ؤה歗⫷Ⰻ⡤ך葿䞔㜠《䖤 3. Application Extensionַ،صً٦ءّٝךٕ٦ف㔐侧《䖤 4. Graphic Control Extensionַ؝و歗⫷ך鷲麓Ⳣ椚ך剣搀הծ! ،صً٦ءّׅٝꥷך如ך؝وתדך鹼䒀儗《䖤 5. ImageBlockַ؝و歗⫷ךؾؙإٕ׀הךر٦ة《䖤׃ծ! 䖤ؾؙإٕ䞔㜠הֿתד《䖤׃䞔㜠⯋חBitmap! ⡲䧭 6. 4ה5ך⡲噟؝و侧ⴓֽ粸鵤ׅ
- 22. GifDecoder.java 1. GIFؿ؋؎ٕךغ؎شٔر٦ة鍑匿 2. GifHeaderַ歗⫷ך؟؎ؤה歗⫷Ⰻ⡤ך葿䞔㜠《䖤 3. Application Extensionַ،صً٦ءّٝךٕ٦ف㔐侧《䖤 4. Graphic Control Extensionַ؝و歗⫷ך鷲麓Ⳣ椚ך剣搀הծ! ،صً٦ءّׅٝꥷך如ך؝وתדך鹼䒀儗《䖤 5. ImageBlockַ؝و歗⫷ךؾؙإٕ׀הךر٦ة《䖤׃ծ! 䖤ؾؙإٕ䞔㜠הֿתד《䖤׃䞔㜠⯋חBitmap! ⡲䧭 6. 4ה5ך⡲噟؝و侧ⴓֽ粸鵤ׅ
- 23. ֿֿ⥜姻ׅלְְשְ
- 25. 罋ִ倯㢌ִ
- 26. GifDecoder.java 1. GIFؿ؋؎ٕךغ؎شٔر٦ة鍑匿 2. GifHeaderַ歗⫷ך؟؎ؤה歗⫷Ⰻ⡤ך葿䞔㜠《䖤 3. Application Extensionַ،صً٦ءّٝךٕ٦ف㔐侧《䖤 4. Graphic Control Extensionַ؝و歗⫷ך鷲麓Ⳣ椚ך剣搀הծ! ،صً٦ءّׅٝꥷך如ך؝وתדך鹼䒀儗《䖤 5. ImageBlockַ؝و歗⫷ךؾؙإٕ׀הךر٦ة《䖤׃ծ! 䖤ؾؙإٕ䞔㜠הֿתד《䖤׃䞔㜠⯋חBitmap! ⡲䧭 6. 4ה5ך⡲噟؝و侧ⴓֽ粸鵤ׅ
- 27. 銲כBitmapָדֹלְְ
- 29. GIF89a GIF Header Graphic Control Extension Image Block Trailer GIF،صً GIF Header Application Extension Graphic Control Extension Image Block Graphic Control Extension Image Block Trailer GIF Header Graphic Control Extension Image Block Trailer
- 31. דֹ
- 32. GifImageDecoder.java 1. GIFؿ؋؎ٕךغ؎شٔر٦ة鍑匿 2. GifHeader《䖤 3. Graphic Control Extensionַ؝و歗⫷ך鷲麓Ⳣ椚ך剣搀הծ! ،صً٦ءّׅٝꥷך如ך؝وתדך鹼䒀儗《䖤 4. ImageBlock《䖤׃ծ《䖤׃GifHeaderהGraphic Control Extension! ♧אךغ؎شٔر٦ةחתה 5. 4ךر٦ةַBitmapFactory⢪גBitmap欰䧭ׅ 6. 3ה4ה5ך⡲噟؝و侧ⴓֽ粸鵤ׅ
- 33. 鸞ְ
- 34. ˟歗⫷כ؎ً٦آדׅ
- 35. 铬겗
- 36. Android OS 4.1JellyBean։! ♧鿇ךGIFָBitmapח㢌䳔דֹזְ BitmapFactoryⰻ鿇ד⢪גְٓ؎ـٓٔךغؚ…׃ְ ؟؎ؤ㢌刿װ㖇簭ׁGIFؿ؋؎ٕדⱄ植ׅךדծ! ׃ַ׃ؿ؋؎ٕך倯ח㉏겗ָ֮ךַ׃זְ! GIF،صַً欰䧭׃湫׃ؿ؋؎ٕׅץגָ㢌䳔דֹזְֽדכ זֻגծך⚥דׁח♧鿇ך歗⫷ֽח㼎׃ג饯ֿ! ד׀ֻ׀ֻ♧鿇זךד兛鸐ח⢪ֲⴓחכ㣐♱㣗זכ׆…
- 37. Android OS 4.4KitKat! GIFך鷲麓Ⳣ椚ָ⿾僥ׁזְ! BitmapFactoryךغؚ https://code.google.com/p/android/issues/detail?id=62016 GIF،صًכ⹛ַזְ鿇ⴓ鷲麓חֿׅהדؿ؋؎ٕ؟؎ؤ䫇ִ ֿהָקהוזךדծֿך♶Ⱗさכ汤ְ…