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POHow to programmatically draw smooth stroke around a button in Android?
 

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  1. POHow to programmatically draw smooth stroke around a button in Android?
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    <p>I am trying to draw a smoothed antialiased stroke around a gradient-filled button but the corners gets really ugly. This is my code:</p> <pre><code>import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.Shape; public class StrokeShapeDrawable extends ShapeDrawable { Paint fillpaint; Paint strokepaint; private static final int WIDTH = 1; public StrokeShapeDrawable(Shape s) { super(s); fillpaint = this.getPaint(); strokepaint = new Paint(fillpaint); strokepaint.setAntiAlias(true); strokepaint.setStyle(Paint.Style.STROKE); strokepaint.setStrokeWidth(WIDTH); strokepaint.setARGB(255, 0, 0, 0); } @Override protected void onDraw(Shape shape, Canvas canvas, Paint fillpaint) { shape.draw(canvas, fillpaint); shape.draw(canvas, strokepaint); } public void setFillColour(int c) { fillpaint.setColor(c); } } </code></pre> <p>And the button creation:</p> <pre><code> ShapeDrawable.ShaderFactory sf = new ShapeDrawable.ShaderFactory() { @Override public Shader resize(int width, int height) { LinearGradient lg = new LinearGradient(0, 0, 0, mLoginBtn.getHeight(), new int[] { 0xfff6f6f6, 0xffd2d3d5, 0xffc0c1c4, 0xffc0c1c4}, new float[] { 0, 0.45f, 0.55f, 1 }, Shader.TileMode.REPEAT); return lg; } }; float[] roundedCorner = new float[] {15, 15, 15, 15, 15, 15, 15, 15}; StrokeShapeDrawable b = new StrokeShapeDrawable(new RoundRectShape(roundedCorner, null, null)); b.setShaderFactory(sf); mLoginBtn.setBackgroundDrawable((Drawable)b); </code></pre> <p>My button looks like this:</p> <p><img src="https://i.stack.imgur.com/GOdTc.png" alt="Button"></p> <p>Not very nice, anyone has any ideas?</p> <p>Also I do not want to use a XML file since I am not sure it's possible to achieve two gradients with 50 precent each of the button without using dp's to specify gradient position (since I want to have 50-50 gradients).</p> <p>Thanks!</p>
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    1. USHenrik
    1. USHenrik
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    1. COI just wonder why don't you use nine-patch?
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      1. POHow to programmatically draw smooth stroke around a button in Android?
      1. USslkorolev
 

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