How To Outline A Textview?

What I want to do? (blue will be changed as white) What I did? I have found a class which extends TextView that able to outline textview very close to what I want. The problem is

Solution 1:

1) create your textview object extends TextView

publicclassYourTextViewextendsTextView { .........

2) Do this on its draw method

@Overridepublicvoiddraw(Canvas canvas) {
        for (inti=0; i < 5; i++) {
        super.draw(canvas);
    }
}

3) set textview's xml side as below

android:shadowColor="@color/white"android:shadowRadius="5"

Solution 2:

I found simple way to outline view without inheritance from TextView. I had wrote simple library that use Android's Spannable for outlining text. This solution gives possibility to outline only part of text.

Library: OutlineSpan

Class (you can copy only class):OutlineSpan

Solution 3:

Couldn't this this but try experimenting with: PorterDuff.Mode

http://developer.android.com/reference/android/graphics/PorterDuff.Mode.html

Try changing it to 'ADD' or 'CLEAR', hope this helps.

Solution 4:

You need to change your getWhiteBorderPaint() method to the following:

privatestatic Paint getWhiteBorderPaint(){
    Paint p = new Paint();
    p.setColor(Color.WHITE);
    return p;
}

The Paint constructor only takes bitmasked flags and doesn't support arbitrary ints as parameters.

Solution 5:

Investigated into the original problem stated by this question. Found the solution.

First, change DST_OUT to DARKEN

static {
    BLACK_BORDER_PAINT.setXfermode(newPorterDuffXfermode(PorterDuff.Mode.DARKEN));
}

Secondly, save the original text color, and put the intended outline color up, draw the outline, and then restore the original text color.

@Overridepublicvoiddraw(Canvas aCanvas) {
    intoriginalColor=this.getCurrentTextColor();
    this.setTextColor(0xff000000); //set it to white.

    aCanvas.saveLayer(null, borderPaint, Canvas.HAS_ALPHA_LAYER_SAVE_FLAG
            | Canvas.FULL_COLOR_LAYER_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG);

        drawBackground(aCanvas, -BORDER_WIDTH, -BORDER_WIDTH);
        drawBackground(aCanvas, BORDER_WIDTH + BORDER_WIDTH, 0);
        drawBackground(aCanvas, 0, BORDER_WIDTH + BORDER_WIDTH);
        drawBackground(aCanvas, -BORDER_WIDTH - BORDER_WIDTH, 0);

    this.setTextColor(originalColor);
    aCanvas.restore();
    super.draw(aCanvas);
}