那些遇到过的问题

PrintedPdfDocument始终导致PDF损坏

Pau*_*ett 4 pdf android pdf-generation

我正在尝试根据用户在我的Android应用程序中显示的表单创建PDF文档.我使用以下代码创建PDF文件,然后将其附加到电子邮件中:

public static File generate(View salesFragmentTableLayout, Context context) throws KingdomSpasException {
        Builder printAttrsBuilder = new Builder();
        printAttrsBuilder.setMediaSize(PrintAttributes.MediaSize.ISO_A4);
        printAttrsBuilder.setMinMargins(new Margins(5, 5, 5, 5));

        PrintedPdfDocument document = new PrintedPdfDocument(context, printAttrsBuilder.build());

        PageInfo pageInfo = new PageInfo.Builder(150, 150, 1).create();
        Page page = document.startPage(pageInfo);
        salesFragmentTableLayout.draw(page.getCanvas());
        document.finishPage(page);
        File result = null;
        try {
            result = File.createTempFile("Kingdom Spas Agreement", ".pdf", context.getCacheDir());
            document.writeTo(new BufferedOutputStream(new FileOutputStream(result)));
        } catch (FileNotFoundException e) {
            throw new KingdomSpasException("Failed to find relevent file", e);
        } catch (IOException e) {
            throw new KingdomSpasException("IO Problem occured while creatin the PDF", e);
        }
        document.close();
        return result;
    }
Run Code Online (Sandbox Code Playgroud)

生成的PDF始终已损坏,无法通过Adobe Acroread或GS打开.当我在acroread中打开它时,我收到错误:

打开此文档时出错.文件已损坏,无法修复.

当我尝试使用以下命令在GS中打开它时:

gs \
   -o repaired.pdf \
   -sDEVICE=pdfwrite \
   -dPDFSETTINGS=/prepress \
  KingdomSpasAgreement.pdf
Run Code Online (Sandbox Code Playgroud)

我得到以下输出:

****错误:无法在文件中的任何位置找到"startxref".
****警告:读取XREF表时发生错误.
****文件已损坏.这可能是
由转换或传输文件时出现问题引起的.
****Ghostscript将尝试恢复数据.
****错误:未找到预告片.不会处理任何页面(FirstPage> LastPage).

****此文件包含已修复或忽略的错误.
****如果产生此
****文件的软件不符合Adobe发布的PDF
****规范,请通知作者.

我不明白我做错了什么 - 整个过程看起来相当简单,但总是失败.

编辑:

以下是完整性的相关布局:

<TableLayout
            android:id="@+id/salesAgreementTableLayout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <TableRow
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" >

                <ImageView
                    android:id="@+id/companyLogo"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:contentDescription="@string/logo_description"
                    android:src="@drawable/company_logo" />

                <ImageView
                    android:id="@+id/companyAddress"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:contentDescription="@string/address_description"
                    android:src="@drawable/company_address" />
            </TableRow>

            <TableRow
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical" >

                <FrameLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" >

                    <EditText
                        android:id="@+id/salesExecInitials"
                        android:layout_width="fill_parent"
                        android:layout_height="wrap_content"
                        android:background="@drawable/round"
                        android:inputType="text"
                        android:maxLines="1"
                        android:paddingLeft="130dp"
                        android:singleLine="true" >

                        <requestFocus />
                    </EditText>

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_vertical"
                        android:paddingLeft="10dp"
                        android:text="@string/sales_exec_initials" />
                </FrameLayout>
            </TableRow>
        </TableLayout>
Run Code Online (Sandbox Code Playgroud)

编辑#2:我在通过电子邮件发送后检查了文件,但现在使用"adb pull"直接检查了文件,它仍然以同样的方式被破坏.

编辑#3:我已经将一个损坏的PDF的示例上传到dropox:损坏的PDF示例

它实际上使用的是更简化的View,但仍然是腐败的

编辑#4:我现在尝试在getFD()上调用sync(),并按照CommonsWare下面的建议关闭流,这会导致异常,我觉得这很有趣.堆栈跟踪是为了防止任何光线:

12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950): com.kingdomspas.android.kingdomspasforms.exceptions.KingdomSpasException: Failed to correctly clean up streams
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at com.kingdomspas.android.kingdomspasforms.utils.KingdomSpasFormsPDFGenerator.generate(KingdomSpasFormsPDFGenerator.java:69)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at com.kingdomspas.android.kingdomspasforms.listeners.KingdomSpasSubmitButtonListener.onClick(KingdomSpasSubmitButtonListener.java:25)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at android.view.View.performClick(View.java:4438)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at android.view.View$PerformClick.run(View.java:18439)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at android.os.Handler.handleCallback(Handler.java:733)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at android.os.Handler.dispatchMessage(Handler.java:95)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at android.os.Looper.loop(Looper.java:136)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at android.app.ActivityThread.main(ActivityThread.java:5147)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at java.lang.reflect.Method.invokeNative(Native Method)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at java.lang.reflect.Method.invoke(Method.java:515)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at dalvik.system.NativeStart.main(Native Method)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950): Caused by: java.io.IOException: write failed: EBADF (Bad file number)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.IoBridge.write(IoBridge.java:455)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at java.io.FileOutputStream.write(FileOutputStream.java:187)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at java.io.BufferedOutputStream.flushInternal(BufferedOutputStream.java:185)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:85)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at com.kingdomspas.android.kingdomspasforms.utils.KingdomSpasFormsPDFGenerator.generate(KingdomSpasFormsPDFGenerator.java:63)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   ... 12 more
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950): Caused by: libcore.io.ErrnoException: write failed: EBADF (Bad file number)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.Posix.writeBytes(Native Method)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.Posix.write(Posix.java:202)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.BlockGuardOs.write(BlockGuardOs.java:197)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.IoBridge.write(IoBridge.java:450)
12-16 16:39:05.675: E/KingdomSpasSubmitButtonListener(17950):   ... 16 more
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950): Failed to generate the agreement PDF
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950): com.kingdomspas.android.kingdomspasforms.exceptions.KingdomSpasException: Failed to correctly clean up streams
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at com.kingdomspas.android.kingdomspasforms.utils.KingdomSpasFormsPDFGenerator.generate(KingdomSpasFormsPDFGenerator.java:69)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at com.kingdomspas.android.kingdomspasforms.listeners.KingdomSpasSubmitButtonListener.onClick(KingdomSpasSubmitButtonListener.java:25)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at android.view.View.performClick(View.java:4438)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at android.view.View$PerformClick.run(View.java:18439)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at android.os.Handler.handleCallback(Handler.java:733)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at android.os.Handler.dispatchMessage(Handler.java:95)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at android.os.Looper.loop(Looper.java:136)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at android.app.ActivityThread.main(ActivityThread.java:5147)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at java.lang.reflect.Method.invokeNative(Native Method)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at java.lang.reflect.Method.invoke(Method.java:515)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at dalvik.system.NativeStart.main(Native Method)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950): Caused by: java.io.IOException: write failed: EBADF (Bad file number)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.IoBridge.write(IoBridge.java:455)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at java.io.FileOutputStream.write(FileOutputStream.java:187)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at java.io.BufferedOutputStream.flushInternal(BufferedOutputStream.java:185)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:85)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at com.kingdomspas.android.kingdomspasforms.utils.KingdomSpasFormsPDFGenerator.generate(KingdomSpasFormsPDFGenerator.java:63)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   ... 12 more
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950): Caused by: libcore.io.ErrnoException: write failed: EBADF (Bad file number)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.Posix.writeBytes(Native Method)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.Posix.write(Posix.java:202)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.BlockGuardOs.write(BlockGuardOs.java:197)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   at libcore.io.IoBridge.write(IoBridge.java:450)
12-16 16:39:13.845: E/KingdomSpasSubmitButtonListener(17950):   ... 16 more
Run Code Online (Sandbox Code Playgroud)

Com*_*are 5

你永远不会flush()和close()你的流.你也应该叫sync()上getFD()你的FileOutputStream,以确保所有字节被提交到磁盘(而不是被写入缓存由文件系统).根据您尝试对文件执行某些操作的时间,此类内容可能会导致截断输出.

归档时间：

查看次数：

1544 次

最近记录：

10 年，8 月 前
相关归档
如何使用Qt 5.6在NFC上运行NFC 56
找不到与给定名称'@ style/Theme.Holo.Light.DarkActionBar'匹配的资源 54
Android中的SeekBar和媒体播放器 52
布局权重在ScrollView中不起作用 49
java.lang.VerifyError:使用发布APK时,Verifier在Lollipop上拒绝了类 41
如何使用印尼语本地化Android应用程序 35
HTML版C标准草案(n1256.pdf)？ 16
PDF JavaScript在Adobe Reader DC中不起作用,但在所有其他读者中都不起作用 5
mPDF - 基于元素高度的分页符 5
在R中创建漂亮的PDF报告文件 2
难疑归档
为什么减去这两次(在1927年)给出一个奇怪的结果？ 6628
如何在Java中读取/转换InputStream为String？ 3864
SCSS和Sass有什么区别？ 1760
如何检查变量是否是JavaScript中的数组？ 1713
如何迭代Bash中变量定义的一系列数字？ 1409
如何克隆仅Git存储库的子目录？ 1298
"javascript:void(0)"是什么意思？ 1292
哪些字符在CSS类名/选择器中有效？ 1171
require,include,require_once和include_once之间的区别？ 1166
git:撤消所有工作目录更改,包括新文件 1108