Android - ImageView 内的画布绘制线

发布于 2024-12-20 12:33:00 字数 727 浏览 1 评论 0原文

我有一个 ImageView 我想在其中画一条线。我已经完成了以下操作：

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

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

功能是：

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);

}

我的问题是绘制了线，但没有获得权限坐标。它被绘制得比应有的小。

谢谢

编辑：我忘了说 mImagenCampo 是一个 ImageView

原文

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);

And the function is:

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);

}

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

Thanks

Edit: I forgot to say that mImagenCampo is an ImageView

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So尛奶瓶 2024-12-27 12:33:00

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);
}

Try this:

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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