複数のファイルの文字列バイト表現の保存

Question

単一のHTTP Post内の複数のファイルの文字列バイト表現を含む情報のHTTP投稿を行う必要があります。かなりのバイト割り当てエラーが発生しており、後でサーバーにポストするためにこの情報を格納する方が良いかどうか疑問に思っていましたか？

私は基本的にかなりの数の画像ファイルを撮影した、と私はフォーマットの単一HTTPポスト文字列にそれらをパッケージ化しています：

name="string byte representation of picture file"&timestamp="time"&gps="latitude""longitude",など

Logcat：

03-09 22:26:41.329: E/dalvikvm-heap(8716): Out of memory on a 5932438-byte allocation. 
03-09 22:26:41.329: I/dalvikvm(8716): "main" prio=5 tid=1 RUNNABLE 
03-09 22:26:41.329: I/dalvikvm(8716): | group="main" sCount=0 dsCount=0 s=N obj=0x40020ba0 self=0xddd0 
03-09 22:26:41.329: I/dalvikvm(8716): | sysTid=8716 nice=0 sched=0/0 cgrp=unknown handle=-1345025972 
03-09 22:26:41.329: I/dalvikvm(8716): at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:~97) 
03-09 22:26:41.329: I/dalvikvm(8716): at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:157) 
03-09 22:26:41.329: I/dalvikvm(8716): at java.lang.StringBuilder.append(StringBuilder.java:217) 
03-09 22:26:41.329: I/dalvikvm(8716): at mfc.generalguixapi8.SaveData2.saveData(SaveData2.java:169) 
03-09 22:26:41.329: I/dalvikvm(8716): at mfc.generalguixapi8.SaveData2.onCreate(SaveData2.java:34) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.os.Looper.loop(Looper.java:123) 
03-09 22:26:41.329: I/dalvikvm(8716): at android.app.ActivityThread.main(ActivityThread.java:4627) 
03-09 22:26:41.339: I/dalvikvm(8716): at java.lang.reflect.Method.invokeNative(Native Method) 
03-09 22:26:41.339: I/dalvikvm(8716): at java.lang.reflect.Method.invoke(Method.java:521) 
03-09 22:26:41.339: I/dalvikvm(8716): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
03-09 22:26:41.339: I/dalvikvm(8716): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
03-09 22:26:41.339: I/dalvikvm(8716): at dalvik.system.NativeStart.main(Native Method) 
03-09 22:26:41.339: W/dalvikvm(8716): threadid=1: thread exiting with uncaught exception (group=0x40020ac0) 
03-09 22:26:41.339: E/AndroidRuntime(8716): FATAL EXCEPTION: main 
03-09 22:26:41.339: E/AndroidRuntime(8716): java.lang.OutOfMemoryError 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:97) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:157) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at java.lang.StringBuilder.append(StringBuilder.java:217) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at mfc.generalguixapi8.SaveData2.saveData(SaveData2.java:169) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at mfc.generalguixapi8.SaveData2.onCreate(SaveData2.java:34) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.os.Looper.loop(Looper.java:123) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at java.lang.reflect.Method.invoke(Method.java:521) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
03-09 22:26:41.339: E/AndroidRuntime(8716):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

この問題を解決するにはSending file > 1MB using HTTP POST

上記のリンクでOutofMemoryの問題が発生しましたが、保存して解決しましたデータをFileOutputStreamに送信し、情報をサーバーにチャンクで送信します。