I have also this problem
On 22 Temmuz, 03:18, Bo <zhaobo...@gmail.com> wrote:
> Dear Sir:
>
> I developed a FTP uploading program which upload the string to a text
> file through FTP. This program only works well as an Java application
> on PC, but when I put the same code to Android application on
> Emulator, Android always begins to grow heap and allocate memory when
> the code calls the function"URLConnection.getOutputStream()", and
> finally Android is "Out of memory". I have suffered from this problem
> for a week. If you could help me, I really appreciate!
>
> Below is the code and debug trace got by "adb logcat". (I replace the
> host, user, password and targetfile with some common strings.)
>
> String host = "hostname";
> String user = "username";
> String password = "password";
> String targetfile = "filename";
>
> try{
> URL url= new URL("ftp://"+ user+ ":"+ password+
> "@"+ host+ "/"+ targetfile + ";type=i");
> URLConnection urlc = url.openConnection();
> Log.d("DEBUG", " openconnection done");
>
> OutputStream os = urlc.getOutputStream();//
> problem happens from this line
> Log.d("DEBUG","get OutputStream");
> String packet_str = "Uploading";
> byte[] buf = packet_str.getBytes();
> os.write(buf);
> Log.d("DEBUG","write done");
> os.close();
> urlc= null;
> }catch (Exception E) {
> Log.d("DEBUG","Erro Happen!" + E.getMessage
> ());
> E.printStackTrace();
> }
>
> Below is the trace:
>
> D/DEBUG ( 719): openconnection done
> D/InetAddress( 719): xzzb.hostrator.com: 64.191.109.6 (family 2,
> proto 6)
> D/dalvikvm( 637): GC freed 2854 objects / 162328 bytes in 177ms
> D/dalvikvm( 719): GC freed 14245 objects / 422552 bytes in 84ms
> D/dalvikvm( 719): GC freed 19713 objects / 529824 bytes in 75ms
> D/dalvikvm( 719): GC freed 17813 objects / 501656 bytes in 78ms
> D/dalvikvm( 719): GC freed 23615 objects / 567184 bytes in 82ms
>
> .....
>
> D/dalvikvm( 719): GC freed 74935 objects / 1798504 bytes in 162ms
> D/dalvikvm( 719): GC freed 74935 objects / 1798504 bytes in 155ms
> D/dalvikvm( 719): GC freed 43212 objects / 1037152 bytes in 118ms
> I/dalvikvm-heap( 719): Forcing collection of SoftReferences for
> 9437196-byte allocation
> D/dalvikvm( 719): GC freed 0 objects / 0 bytes in 62ms
> E/dalvikvm-heap( 719): Out of memory on a 9437196-byte allocation.
> I/dalvikvm( 719): "main" prio=5 tid=3 RUNNABLE
> I/dalvikvm( 719): | group="main" sCount=0 dsCount=0 s=0
> obj=0x40018e70
> I/dalvikvm( 719): | sysTid=719 nice=0 sched=0/0 handle=-1097544548
> I/dalvikvm( 719): at java.lang.AbstractStringBuilder.enlargeBuffer
> (AbstractStringBuilder.java:~99)
> I/dalvikvm( 719): at java.lang.AbstractStringBuilder.append0
> (AbstractStringBuilder.java:153)
> I/dalvikvm( 719): at java.lang.StringBuffer.append
> (StringBuffer.java:128)
> I/dalvikvm( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.readLine
> (FtpURLConnection.java:403)
> I/dalvikvm( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.getReply
> (FtpURLConnection.java:355)
> I/dalvikvm( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.port
> (FtpURLConnection.java:391)
> I/dalvikvm( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.connectInternal
> (FtpURLConnection.java:232)
> I/dalvikvm( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.connect
> (FtpURLConnection.java:189)
> I/dalvikvm( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.getOutputStream
> (FtpURLConnection.java:342)
> I/dalvikvm( 719): at com.example.sendonce.sendonce$1.onClick
> (sendonce.java:118)
> I/dalvikvm( 719): at android.view.View.performClick(View.java:2179)
> I/dalvikvm( 719): at android.view.View.onTouchEvent(View.java:3828)
> I/dalvikvm( 719): at android.widget.TextView.onTouchEvent
> (TextView.java:6291)
> I/dalvikvm( 719): at android.view.View.dispatchTouchEvent
> (View.java:
> 3368)
> I/dalvikvm( 719): at android.view.ViewGroup.dispatchTouchEvent
> (ViewGroup.java:863)
> I/dalvikvm( 719): at android.view.ViewGroup.dispatchTouchEvent
> (ViewGroup.java:863)
> I/dalvikvm( 719): at android.view.ViewGroup.dispatchTouchEvent
> (ViewGroup.java:863)
> I/dalvikvm( 719): at android.view.ViewGroup.dispatchTouchEvent
> (ViewGroup.java:863)
> I/dalvikvm( 719): at com.android.internal.policy.impl.PhoneWindow
> $DecorView.superDispatchTouchEvent(PhoneWindow.java:1707)
> I/dalvikvm( 719): at
> com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent
> (PhoneWindow.java:1197)
> I/dalvikvm( 719): at android.app.Activity.dispatchTouchEvent
> (Activity.java:1993)
> I/dalvikvm( 719): at com.android.internal.policy.impl.PhoneWindow
> $DecorView.dispatchTouchEvent(PhoneWindow.java:1691)
> I/dalvikvm( 719): at android.view.ViewRoot.handleMessage
> (ViewRoot.java:1525)
> I/dalvikvm( 719): at android.os.Handler.dispatchMessage
> (Handler.java:99)
> I/dalvikvm( 719): at android.os.Looper.loop(Looper.java:123)
> I/dalvikvm( 719): at android.app.ActivityThread.main
> (ActivityThread.java:3948)
> I/dalvikvm( 719): at java.lang.reflect.Method.invokeNative(Native
> Method)
> I/dalvikvm( 719): at java.lang.reflect.Method.invoke(Method.java:
> 521)
> I/dalvikvm( 719): at com.android.internal.os.ZygoteInit
> $MethodAndArgsCaller.run(ZygoteInit.java:782)
> I/dalvikvm( 719): at com.android.internal.os.ZygoteInit.main
> (ZygoteInit.java:540)
> I/dalvikvm( 719): at dalvik.system.NativeStart.main(Native Method)
> I/dalvikvm( 719):
> D/AndroidRuntime( 719): Shutting down VM
> W/dalvikvm( 719): threadid=3: thread exiting with uncaught exception
> (group=0x4000fe70)
> E/AndroidRuntime( 719): Uncaught handler: thread main exiting due to
> uncaught exception
> E/AndroidRuntime( 719): java.lang.OutOfMemoryError
> E/AndroidRuntime( 719): at
> java.lang.AbstractStringBuilder.enlargeBuffer
> (AbstractStringBuilder.java:99)
> E/AndroidRuntime( 719): at
> java.lang.AbstractStringBuilder.append0
> (AbstractStringBuilder.java:153)
> E/AndroidRuntime( 719): at java.lang.StringBuffer.append
> (StringBuffer.java:128)
> E/AndroidRuntime( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.readLine
> (FtpURLConnection.java:403)
> E/AndroidRuntime( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.getReply
> (FtpURLConnection.java:355)
> E/AndroidRuntime( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.port
> (FtpURLConnection.java:391)
> E/AndroidRuntime( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.connectInternal
> (FtpURLConnection.java:232)
> E/AndroidRuntime( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.connect
> (FtpURLConnection.java:189)
> E/AndroidRuntime( 719): at
> org.apache.harmony.luni.internal.net.www.protocol.ftp.FtpURLConnection.getOutputStream
> (FtpURLConnection.java:342)
> E/AndroidRuntime( 719): at com.example.sendonce.sendonce
> $1.onClick
> (sendonce.java:118)
> E/AndroidRuntime( 719): at android.view.View.performClick
> (View.java:2179)
> E/AndroidRuntime( 719): at android.view.View.onTouchEvent
> (View.java:3828)
> E/AndroidRuntime( 719): at android.widget.TextView.onTouchEvent
> (TextView.java:6291)
> E/AndroidRuntime( 719): at android.view.View.dispatchTouchEvent
> (View.java:3368)
> E/AndroidRuntime( 719): at
> android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
> E/AndroidRuntime( 719): at
> android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
> E/AndroidRuntime( 719): at
> android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
> E/AndroidRuntime( 719): at
> android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
> E/AndroidRuntime( 719): at
> com.android.internal.policy.impl.PhoneWindow
> $DecorView.superDispatchTouchEvent(PhoneWindow.java:1707)
> E/AndroidRuntime( 719): at
> com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent
> (PhoneWindow.java:1197)
> E/AndroidRuntime( 719): at
> android.app.Activity.dispatchTouchEvent
> (Activity.java:1993)
> E/AndroidRuntime( 719): at
> com.android.internal.policy.impl.PhoneWindow
> $DecorView.dispatchTouchEvent(PhoneWindow.java:1691)
> E/AndroidRuntime( 719): at android.view.ViewRoot.handleMessage
> (ViewRoot.java:1525)
> E/AndroidRuntime( 719): at android.os.Handler.dispatchMessage
> (Handler.java:99)
> E/AndroidRuntime( 719): at android.os.Looper.loop(Looper.java:
> 123)
> E/AndroidRuntime( 719): at android.app.ActivityThread.main
> (ActivityThread.java:3948)
> E/AndroidRuntime( 719): at java.lang.reflect.Method.invokeNative
> (Native Method)
> E/AndroidRuntime( 719): at java.lang.reflect.Method.invoke
> (Method.java:521)
> E/AndroidRuntime( 719): at com.android.internal.os.ZygoteInit
> $MethodAndArgsCaller.run(ZygoteInit.java:782)
> E/AndroidRuntime( 719): at
> com.android.internal.os.ZygoteInit.main
> (ZygoteInit.java:540)
> E/AndroidRuntime( 719): at dalvik.system.NativeStart.main(Native
> Method)
> I/Process ( 569): Sending signal. PID: 719 SIG: 3
> I/dalvikvm( 719): threadid=7: reacting to signal 3
> I/dalvikvm( 719): Wrote stack trace to '/data/anr/traces.txt'
>
> Thank you!
> Bo
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