谁能告诉我如何在保持图像缩放的同时更改图像视图中的图像?以前的和新的图像具有相同的大小。对于缩放功能,我使用来自https://stackoverflow.com/a/7458910/1346016的代码 我尝试使用 setimagebitmap、setimagedrawable 和其他一些,但它们似乎都不起作用。每次我刷新图像时,图像大小都会恢复到原来的大小。
谢谢你
这是我的代码的样子:
TouchImageView img,buffer;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set multi touch zooming
img = new TouchImageView(this);
img.setMaxZoom(4f);
Bitmap img1 = BitmapFactory.decodeResource(getResources(), R.drawable.blueprint);
img.setImageBitmap(img1);
// refresh image
refreshImage();
setContentView(img);
}
public void refreshImage() {
handler.postDelayed(new Runnable() {
public void run() {
Bitmap img1 = BitmapFactory.decodeResource(getResources(), R.drawable.blueprint);
Canvas newImg = new Canvas(img1);
newImg.drawBitmap(img1, 0f, 0f, null);
Paint inner = new Paint();
Paint outer = new Paint();
inner.setARGB(255, 0, 138, 255);
outer.setARGB(100, 0, 138, 255);
newImg.drawCircle(axis[0], axis[1], 9, inner);
newImg.drawCircle(axis[0], axis[1], 50, outer);
buffer = img;
img.setImageBitmap(img1);
img.bmHeight = buffer.bmHeight;
img.bmWidth = buffer.bmWidth;
img.bottom = buffer.bottom;
img.setImageDrawable(buffer.getDrawable());
img.origHeight = buffer.origHeight;
img.origWidth = buffer.origWidth;
img.redundantXSpace = buffer.redundantXSpace;
img.redundantYSpace = buffer.redundantYSpace;
img.right = buffer.right;
img.saveScale = buffer.saveScale;
img.setImageMatrix(buffer.matrix);
img.setScaleType(ScaleType.MATRIX);
}
}, 2000);
}
编辑:现在我尝试将更改图像的代码更改为:
m = img.matrix;
img.setImageBitmap(img1);
img.matrix = m;
img.setImageMatrix(m);
但我仍然有同样的问题。