Question

I’m implementing a backup method to copy the app database to the SDCard.

This works fine in the emulator, but when I try to run it on my phone it crashes. Following is the relevant stacktrace:

W/KeyCharacterMap(15814): Can't open keycharmap file
W/KeyCharacterMap(15814): Error loading keycharmap file '/data/usr/keychars/tegra-kbc.kcm.bin'.     hw.keyboards.0.devname='tegra-kbc'
W/System.err(15814): java.io.FileNotFoundException: /mnt/sdcard/GroceryList.bak (Permission denied)
W/System.err(15814):    at org.apache.harmony.luni.platform.OSFileSystem.open(Native Method)
W/System.err(15814):    at dalvik.system.BlockGuard$WrappedFileSystem.open(BlockGuard.java:232)
W/System.err(15814):    at java.io.FileOutputStream.<init>(FileOutputStream.java:94)
W/System.err(15814):    at java.io.FileOutputStream.<init>(FileOutputStream.java:66)

My first thought was permissions (due to the permission denied in the stacktrace), but I double checked my manifest and it does contain:

   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

In case it’s something in the method:

public void backup() {
    try {
        File sdcard = Environment.getExternalStorageDirectory();
        File outputFile = new File(sdcard,
                "GroceryList.bak");
        File data = Environment.getDataDirectory();
        File inputFile = new File(data,
                "data/cdc.workshopapps.grocerylist/databases/GroceryList");
        InputStream input = new FileInputStream(inputFile);
        OutputStream output = new FileOutputStream(outputFile);
        byte[] buffer = new byte[1024];
        int length;
        while ((length = input.read(buffer)) > 0) {
            output.write(buffer, 0, length);
        }
        output.flush();
        output.close();
        input.close();
    } catch (IOException e) {
        e.printStackTrace();
        throw new Error("Copying Failed");
    }
}

Is there something I need to do to enable that permission on the phone other than Run the program from Eclipse?

EDIT

Entire manifest as requested:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="cdc.workshopapps.grocerylist"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk android:minSdkVersion="10" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".GroceryListMain"
            android:label="@string/app_name"
            android:theme="@android:style/Theme.NoTitleBar" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

And in case it matters, the phone I’m using is a Motorola Droid X2 (it mattered on my last issue, so I thought I’d mention it).

Answer 1

My comment “Google said the SD card shouldn’t be mounted.” was the correct answer according to OP.