My project in android use html file to navigate pages, and there is a

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Asked: June 9, 20262026-06-09T23:38:54+00:00 2026-06-09T23:38:54+00:00

My project in android use html file to navigate pages, and there is a

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My project in android use html file to navigate pages, and there is a link that will open a pdf file.

here is the html code for the html :

<a href="#" onClick="window.jsinterface.pdf1Click();" style="font-size: 0.9em; padding: 3px 7px 2px 7px; font-family:serif; color:white; text-decoration: none;">My PDF</a>

and this is the code for in my src.

public void pdf1Click() {
                    handler.post(new Runnable() {
                        public void run() {

                        ReadWriteDisplayPDFFile(getResources().openRawResource(R.raw.pdf1),"pdf1.pdf");
                        }
                    });
                }

but when I run my project and click to the link to open the pdf file,
it can’t open the pdf file and i got this error:

Error Writting on /sdcard/myproj/pdf1.pdf
Please Inserd SD Card

and

No Application available to view pdf

does anyone have an Idea about my case?
thanks in advance

logcat:

Error writing /sdcard/myproj/pdf1.pdf 
java.io.FileNotFoundException: /sdcard/myproj/pdf1.pdf : open failed: EACCES (Permission denied)
    at libcore.io.IoBridge.open(IoBridge.java:416)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
    at com.sample.AppActivity$JSInterface.ReadWriteDisplayPDFFile(AppActivity.java:146)

    START {act=android.intent.action.VIEW dat=file:///sdcard/myproj/pdf1.pdf typ=application/pdf flg=0x4000000 u=0} from pid 626