How to convert a String array to a CharSequence?

Question

I need to display a dialogue with a list of colors to choose from. I found this solution here.

CharSequence colors[] = new CharSequence[] {"red", "green", "blue", "black"};

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick a color");
builder.setItems(colors, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        // the user clicked on colors[which]
    }
});
builder.show();

I already have a String array of colors. How can I convert it to a CharSequence? I was thinking to use type casting

CharSequence colors[] = (CharSequence) mStringArray;

But this route does not work

Brackets? CharSequence colors[] = (CharSequence[]) mStringArray; — Sviatoslav Melnychenko, Nov 01 '16 at 06:21
Did you tried this code in this link http://stackoverflow.com/questions/19594587/how-to-convert-a-string-array-to-char-array-in-java — Febi M Felix, Nov 01 '16 at 06:21
A `String` is a `CharSequence`. A `String[]` is a `CharSequence[]`. Just pass your `String[]` in `setItems()`. — Mike M., Nov 01 '16 at 06:22
A `String` is already a `CharSequence`. What exactly are you trying to accomplish? (BTW, the cast should be `(CharSequence[]) mStringArray`) — Ted Hopp, Nov 01 '16 at 06:22
@TedHopp You solved my problem, you can post your comment as answer and I will check-mark you — the_prole, Nov 01 '16 at 06:51

score 10 · Accepted Answer · answered Nov 01 '16 at 06:53

10

A String is already a CharSequence and since arrays are covariant in Java, a String[] is already a CharSequence[]. You probably don't need a cast at all, but if you use one it should be (CharSequence[]) mStringArray.

answered Nov 01 '16 at 06:53

Ted Hopp

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How to convert a String array to a CharSequence?

1 Answers1