CODEWITHSUNDEEP
javaandroidfloating-action-button
user5808807
user5808807

Reputation: 71

Change floating action button color on press

I want to use the floating action button as some sort of a favorite button, i.e. a bookmark function. I am using a boolean, initialized like so:

boolean favSelected = false;

and my activity will retrieve some information from my SQLite database to determine whether favSelected will be true or false. If it's true, I would want my fab to be in a different color, and if false the original color. I tried this:

    fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if(favSelected = false) {
                favSelected = true;
                fab.setBackgroundTintList(new ColorStateList(new int[][]{new int[]{0}}, new int[]{getResources().getColor(R.color.header_pressed)}));
            } else if ( favSelected = true){
                favSelected = false;
                fab.setBackgroundTintList(new ColorStateList(new int[][]{new int[]{0}}, new int[]{getResources().getColor(R.color.colorPrimary)}));
            }

        }
    });

but it didn't work. The intended function is a bit like a checkbox

Upvotes: 0

Views: 2353

Answers (2)

Amarjit
Amarjit

Reputation: 4357

You are using if(favSelected = false) This is assignment to favSelected, Please use as if(favSelected == false).

For comparisons we use == sign instead of =

so Modify your code like this 

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @TargetApi(Build.VERSION_CODES.LOLLIPOP)
            @Override
            public void onClick(View view) {

                if (!favSelected) {
                    favSelected = true;
                    view.setBackgroundTintList(new ColorStateList(new int[][]
                            {new int[]{0}}, new int[]{getResources().getColor(R.color.colorAccent)}));
                } else if (favSelected) {
                    favSelected = false;
                    view.setBackgroundTintList(new ColorStateList(new int[][]{new int[]{0}}, new int[]{getResources().getColor(R.color.colorPrimary)}));
                }

            }
        });

Upvotes: 1

Anggrayudi H
Anggrayudi H

Reputation: 15155

Try this code to change your FAB color on pressed state:

    int[][] states = new int[][]{
            new int[]{android.R.attr.state_pressed},
            new int[]{-android.R.attr.state_pressed},
            new int[]{android.R.attr.state_focused},
            new int[]{-android.R.attr.state_pressed}
    };

    int[] colors = new int[]{
            ContextCompat.getColor(this, R.color.color_pressed),
            ContextCompat.getColor(this, R.color.color_normal),
            ContextCompat.getColor(this, R.color.color_pressed),
            ContextCompat.getColor(this, R.color.color_normal)
    };
    fab.setBackgroundTintList(new ColorStateList(states, colors));

Upvotes: 2

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