Android的 - 帆布的drawLine内的ImageView [英] Android - Canvas drawLine inside ImageView

问题描述

我有1的ImageView中，我要画一条线。我已经做了如下：

I've one ImageView in which I want to draw a Line. I've done the follow:

mImagenCampo = (ImageView) findViewById(R.id.imagen_campo); 

crearPunto（mArea9M，mPaloIzq，v.getWidth（），mPaloIzq，Color.WHITE）;

crearPunto(mArea9M, mPaloIzq,v.getWidth(), mPaloIzq,Color.WHITE);

和作用是：

private void crearPunto(float x, float y, float xend, float yend, int color) {

    BitmapDrawable bmpDraw = (BitmapDrawable) mImagenCampo.getDrawable();
    Bitmap bmp = bmpDraw.getBitmap().copy(Config.RGB_565, true);
    Canvas c = new Canvas(bmp);
    Paint p = new Paint();
    p.setColor(color);
    c.drawLine(x, y, xend, yend, p);
    mImagenCampo.setImageBitmap(bmp);

}

我的问题是绘制的线，但它没有得到权利的坐标。它被绘制小于它应该是

My problem is that the line is drawn but It doesn't get the rights coordinates. It is drawn smaller than It should be.

感谢

编辑：我忘了说的 mImagenCampo 的是一个ImageView的

I forgot to say that mImagenCampo is an ImageView

推荐答案

试试这个：

private void crearPunto(float x, float y, float xend, float yend, int color) {

    bmp = Bitmap.createBitmap(mImagenCampo.getWidth(), mImagenCampo.getHeight(), Config.ARGB_8888);
    c = new Canvas(bmp);
        mImagenCampo.draw(c);

    Paint p = new Paint();
    p.setColor(color);
    c.drawLine(x, y, xend, yend, p);
    mImagenCampo.setImageBitmap(bmp);
}

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