我有一个 fragment ,我在新实例中获取 1 个字符串,该字符串是 pdf 文件的 base64,然后将其转换为字节数组。我可以打开大尺寸的 pdf,超过 30mb,但是当应用程序进入后台时,它崩溃并显示“TransactionTooLargeException”。我尝试设置 2 个变量,base64 字符串和字节 null onPause 数组,或者使用saveInstanceState.clear(),但是当我使用手机主页按钮关闭应用程序时,应用程序继续崩溃。 我不明白为什么如果变量为空,它无论如何都会崩溃。我可以避免 saveInstanceState 吗?
private const val BASE64_PDF = "base64_pdf"
class PdfViewerFragment : Fragment() {
private var basePdf: String? = null
private var pdfAsBytes: ByteArray? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
arguments?.let {
basePdf = it.getString(BASE64_PDF)
}
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_pdf_viewer, container, false)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
pdfAsBytes = basePdf.let { PdfUtils.convertBaseToByte(it) }
if (pdfAsBytes != null) showPdf()
}
override fun onAttach(context: Context) {
super.onAttach(context)
}
override fun onPause() {
super.onPause()
basePdf = null
pdfAsBytes = null
}
private fun showPdf() {
pdf_view.fromBytes(pdfAsBytes)
.enableSwipe(true)
.swipeHorizontal(false)
.enableDoubletap(true)
.defaultPage(0)
.enableAntialiasing(true)
.onError { t ->
showError()
Log.d(TAG, t.message)
}
.load()
}
private fun showError() {
Toast.makeText(context, "Errore durante il caricamento del PDF", Toast.LENGTH_LONG).show()
}
companion object {
const val TAG = "PdfViewerFragmentTag"
@JvmStatic
fun newInstance(basePdf: String) =
PdfViewerFragment().apply {
arguments = Bundle().apply {
putString(BASE64_PDF, basePdf)
}
}
}
}
这是错误:
2019-05-03 12:59:18.986 24071-24071/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.energym.app.energympalestre, PID: 24071
java.lang.RuntimeException: android.os.TransactionTooLargeException: data parcel size 93574832 bytes
at android.app.servertransaction.PendingTransactionActions$StopInfo.run(PendingTransactionActions.java:160)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:201)
at android.app.ActivityThread.main(ActivityThread.java:6810)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
Caused by: android.os.TransactionTooLargeException: data parcel size 93574832 bytes
at android.os.BinderProxy.transactNative(Native Method)
at android.os.BinderProxy.transact(BinderProxy.java:473)
at android.app.IActivityManager$Stub$Proxy.activityStopped(IActivityManager.java:3973)
at android.app.servertransaction.PendingTransactionActions$StopInfo.run(PendingTransactionActions.java:144)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:201)
at android.app.ActivityThread.main(ActivityThread.java:6810)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
然后,当我使用任务管理器返回应用程序时,它会返回到开始 Activity ...只有巨大的 pdf 文件才会出现这种情况。
最佳答案
在onPause pdf_view.close();
在onStart pdf_view.load();
关于java - 当应用程序进入后台时,Android 绑定(bind)程序事务失败,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55968476/