Apps Getting rid of screen behind Dialog?

[croninberg]

So I've followed a tutorial on making dialog's and while it works fine, the dialog always has this white background behind it.

You can see it here in the image. I've tried making it transparent and stuff but it doesn't seem to work. I want it so that behind the popup will be the home screen or something else, with the dialog floating on top.

Code for dialog,

public class AlarmDialogClass extends Activity implements View.OnClickListener {

    private AlertDialog.Builder mBuilder;
    private AlertDialog mAlertDialog;
    private View mDialogView;
    private Button mOkBtn, mCancelBtn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        LayoutInflater inflater = getLayoutInflater();

        // build the dialog
        mBuilder = new AlertDialog.Builder(this);
        mDialogView = inflater.inflate(R.layout.dialog_layout, null);

        mOkBtn = (Button) mDialogView.findViewById(R.id.ok);
        mCancelBtn = (Button) mDialogView.findViewById(R.id.cancel);

        mOkBtn.setOnClickListener(this);
        mCancelBtn.setOnClickListener(this);

        mBuilder.setCancelable(false);
        mBuilder.setView(mDialogView);
        mAlertDialog = mBuilder.create();
        mDialogView.setBackground(new ColorDrawable(Color.TRANSPARENT));

        mAlertDialog.show();

    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.ok:
                mAlertDialog.dismiss();
                break;
            case R.id.cancel:
                mAlertDialog.dismiss();
                break;
        }
    }
}

 

[Deleted User]

Have you tried this?

dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));

http://stackoverflow.com/questions/10795078/dialog-with-transparent-background-in-android

 

[croninberg]

I did. When I run this code, the dialog itself becomes transparent.

When I click one of the buttons I'm left with this screen.

 

[Deleted User]

Use a DialogFragment to implement your popup dialog, not an Activity

https://www.tutorialspoint.com/android/android_alert_dialoges.htm
https://developer.android.com/guide/topics/ui/dialogs.html

 

[croninberg]

I'll have a look at this after and let you know how I get on. Thanks!

 

[croninberg]

Right I managed to get this working finally. The problem lies in the android manifest file. The AlarmDialogClass I have above needs to be set to a Dialog theme and have a singleInstance launch mode.

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.android.shnellers.dialogue"
          xmlns:android="http://schemas.android.com/apk/res/android">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <activity
            android:name=".AlarmDialogClass"
            android:theme="@android:style/Theme.Dialog"
            android:launchMode="singleInstance" />

        <receiver android:process=":remote" android:name=".AlertDialogReceiver" />
    </application>

</manifest>

When I began using the DialogFragment, I was calling it from inside the AlarmDialogClass, so this launched the DialogDragment dialog first and when I closed it the AlarmDialogClass launched it's own dialog straight after, so was getting this second dialog.

So got rid of the DialogFragment altogether and by launching from the Activity prevents this happening.