Android java : Draw polyline on Bitmap [closed]

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I want to draw a polyline on a Bitmap which contains a picture but I don't know if I can draw a polyline on a Bitmap. Any idea ? Thanks for help.

回答1:

You can use following function:

canvas.drawLines(float[] pts, 
            int offset, 
            int count, 
            Paint paint);

OR

canvas.drawPath(Path path, 
                Paint paint);

Check below links for more details: https://developer.android.com/reference/android/graphics/Canvas.html

https://developer.android.com/reference/android/graphics/Canvas.html#drawLines(float[], int, int, android.graphics.Paint)

https://developer.android.com/reference/android/graphics/Canvas.html#drawPath(android.graphics.Path, android.graphics.Paint)

来源：https://stackoverflow.com/questions/43733362/android-java-draw-polyline-on-bitmap