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copied!<p>You are drawing a line</p> <pre><code> canvas.drawLine(0, canvas.getHeight() / 2, canvas.getWidth(), canvas.getHeight() / 2, dashPaint) </code></pre> <p>This will draw a line</p> <p>Solution</p> <pre><code> private Path mPath; mPath = new Path(); mPath.moveTo(0, h / 2); mPath.quadTo(w/2, h/2, w, h/2); h and w are height and width of the screen Paint mPaint = new Paint(); mPaint.setARGB(255, 0, 0, 0); mPaint.setStyle(Paint.Style.STROKE); mPaint.setPathEffect(new DashPathEffect(new float[]{5, 10, 15, 20}, 0)); </code></pre> <p>In onDraw()</p> <pre><code> canvas.drawPath(mPath, mPaint); </code></pre> <p>Snap shot</p> <p><img src="https://i.stack.imgur.com/OW0Pn.png" alt="enter image description here"></p> <p>I have background and dashed line drew over it. </p> <p>Example</p> <pre><code>public class FingerPaintActivity extends Activity { MyView mv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mv = new MyView(this); setContentView(mv); mPaint = new Paint(); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setColor(0xFFFF0000); mPaint.setARGB(255, 0, 0, 0); mPaint.setStyle(Paint.Style.STROKE); mPaint.setPathEffect(new DashPathEffect(new float[]{10, 40,}, 0)); mPaint.setStrokeWidth(12); } private Paint mPaint; public class MyView extends View { private Bitmap mBitmap; private Canvas mCanvas; private Path mPath; private Paint mBitmapPaint; Context context; public MyView(Context c) { super(c); context = c; mPath = new Path(); mBitmapPaint = new Paint(Paint.DITHER_FLAG); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); mCanvas = new Canvas(mBitmap); mPath.moveTo(0, h / 2); mPath.quadTo(w / 2, h / 2, w, h / 2); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint); canvas.drawPath(mPath, mPaint); } } } </code></pre> <p>Modify the above according to your needs.</p>

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