CODEWITHSUNDEEP
javaandroidandroid-studio
Mike
Mike

Reputation: 95

Android app says the file does not exist but it does. I need to install it

Here is my code:

        String dir = getFilesDir().getAbsolutePath();
        File myFile = new File(dir+"/file.apk");

        if (myFile.exists())
        {
            textView.setText("File exists.");
        }
        else
        {
            textView.setText("File does not exist.");
        }

myFile.exists() is false. I do not know why. The file exists and it is located in the directory.

When I solve the problem, I'll try this:

            Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
            intent.setData(Uri.fromFile(myFile));
            intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(intent);

Can somebody help? Why it does not see the file?

UPDATE:

It's really strange. If I use code: 

            if (myFile.exists())
            {
                textView.setText("it exists");
            }
            else
            {
                textView.setText(myFile.getAbsolutePath());
            }

, it goes to 'else' and shows the path to the file which 'does not exist'.

Upvotes: 2

Views: 4064

Answers (3)

Patricia
Patricia

Reputation: 2865

If you construct the file with the 2-arg constructor, you can avoid adding a system-dependent path separator character. Like this: 

    File myFile = new File(dir, "file.apk");

Upvotes: 0

Mike
Mike

Reputation: 95

Thanks to greenapps:

"Please click in Astro app left to the word Primary on the up arrow to see the real path. /Primary/ does not exist on an Android device. It's an Astro invention. And Astro shows external memory with Primary. And take a better file explorer like ES File Explorer to inform you about real paths"

I used direct path I found using Astro (modified string dir to '/sdcard/data/data/...").

Upvotes: 1

Viral Patel
Viral Patel

Reputation: 33438

Try using this code:

    String dir = getFilesDir().getAbsolutePath();
    boolean fileExists = (new File(dir + "/file.apk")).isFile();

    if (fileExists)
    {
        // your file exists
    }
    else
    {
        // your file does not exist
    }

Upvotes: 0

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