Android studio getSlotFromBufferLocked: unknown buffer error

Question

I want to make a simple login and register app, so the user can create an account. (name, username, password) I use WAMP and a MYSQL database where I store the accounts.

Answer 1

Edit:

This was a bug in Android that was fixed in later versions of Marshmallow

Original:

I believe that this is Marshmallow specific. Are you using a Marshmallow device?

I've noticed this error is printed out every time I switch between applications (doesn't matter which) or exit out of them, and when activities are destroyed.

I've tried running the same apps on two Nexus 5s - one running Lollipop and the other Marshmallow, and these log prints only appeared on the Marshmallow version - with every app, not just the one I'm building.

Not sure why this happens, but I opened a report here.

Answer 2

It's quite strange but in my case i got this error when tried loading contacts without adding

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

into manifest. And it disappeared just I've done it.

So my guess it's might be something with new permissions in Marshmallow.

Tested on my Nexus 5 with Android 6.0 and with targetSdkVersion 23 in build.gradle

Answer 3

I don't have specific problem's solution. But I had similar problem. Anyone who has problem like this please make sure you have below code.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.<YOUR_XML_FILE_NAME>);

by using intelligence you might have choose below code:

@Override
public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
    super.onCreate(savedInstanceState, persistentState);
    setContentView(R.layout.<YOUR_XML_FILE_NAME>);
}

This worked for me

For more info on PersistentState

Happy coding :)

Answer 4

Since that android changed permissions request (some permissions like android.permission.READ_PHONE_STATE or android.permission.READ_CONTACTS), when you ask for these permissions at runtime and dont add the permission tag (<uses-permission android:name="..." />) in manifest, you will get the error.

So just use tag permissions like old versions and add request permission at runtime in newer versions.

Answer 5

Update your android OS to 6.0.1.

This was an open issue found here. The issue is fixed in Android 6.0.1 which was publicly released recently.

Answer 6

I think you are finishing the context before backgrounTask finish, and Context you pass no longer exist.
You can try:

• Use appContext : new BackgroundTask(Register.this.getApplicationContext());

• Or, Wait for BackgroundTask finish : remove finish() after .execute(...) and add finish() onPostExecute