CODEWITHSUNDEEP
androidandroid-studioviewandroid-custom-viewcustom-view
Pankaj Lilan
Pankaj Lilan

Reputation: 4453

Save/restore state of custom views in android

I've implemented custom views for EditText as you can see in below image:

Custom view for edittext

Now this custom view includes feature of flipping, editing, rotating, drag & drop and resizing. I'm saving this custom view in bitmap format in explorer. The problem is I want to edit it and I want to restore the detail of the custom view and retrieve each and every detail of the CustomView even the position of it. So, is there any way how to implement it?

Upvotes: 4

Views: 1762

Answers (3)

Pankaj Lilan
Pankaj Lilan

Reputation: 4453

Finally, after searching for few days I got a solution for this.

There is a library named StickerView which helps to store the data of particular Drawable Sticker or any Text Sticker by using Matrix and many details can be stored by using The object of StickerView and can be customised by the requirements of an application.

There is one more library similar to this StickerView.

Upvotes: 0

Nouman Ghaffar
Nouman Ghaffar

Reputation: 3830

The simplest way of doing it

  • 1 - Store all the required properties in a preference via map, Pojo
    or via serialization.
  • 2 - Keep multiple keys in the case of multiple views.
  • 3 - Once the specific screen is launched, get the view
    properties from preferences and set it on view ( right a util method which take a Pref key, set everything and return the view ).

Upvotes: 1

Chetan Joshi
Chetan Joshi

Reputation: 5721

You need to store all editing like :

Rotation : for this you have to maintain angle from initial value 0 to next rotation value.

Flip : create one flag for this , and set True , false value for front and back.

Text : you know how take text form EditText.

Layout position within parent View:

for calculating layout postion within parent View use below method and create four int variable for this ,

Left =

Top =

Right =

Bottom =

Height =

Width =

private Map<String,Integer>  getPositionOnScreen(View view){
        Map<String,Integer> map = new HashMap<String,Integer>();
        View rootLayout = view.getRootView().findViewById(android.R.id.content);

        int[] viewLocation = new int[2];
        view.getLocationOnScreen(viewLocation);

        int[] rootLocation = new int[2];
        rootLayout.getLocationOnScreen(rootLocation);

        int relativeLeft = viewLocation[0] - rootLocation[0];
        int relativeTop  = viewLocation[1] - rootLocation[1];

        int height = viewLocation[0] - rootLocation[0];
        int width  = viewLocation[1] - rootLocation[1];


        map.put("left",relativeLeft);
        map.put("top",relativeTop);
        map.put("height",view.getLayoutParams().height);
        map.put("width",view.getLayoutParams().width);
        return map;
    }

Above method return left and top position of view , but you need to calculate right and bottom position from left , top and height , width .

Create one Pojo to hold all this parameters together and store this pojo into SharedPreferences or Data Base or in Application Context.

Upvotes: 4

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