CropPhotoActivity.java 文件源码

@TargetApi(10)
private Bitmap decodeRegionCrop(ImageViewTouch cropImage) {
    int width = initWidth > initHeight ? initHeight : initWidth;
    int screenWidth = DemoApplication.getApp().getScreenWidth();
    float scale = cropImage.getScale() / getImageRadio();
    RectF rectf = cropImage.getBitmapRect();
    int left = -(int) (rectf.left * width / screenWidth / scale);
    int top = -(int) (rectf.top * width / screenWidth / scale);
    int right = left + (int) (width / scale);
    int bottom = top + (int) (width / scale);
    Rect rect = new Rect(left, top, right, bottom);
    InputStream is = null;
    System.gc();
    Bitmap croppedImage = null;
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        oriBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        is = new ByteArrayInputStream(baos.toByteArray());
        BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance(is, false);
        croppedImage = decoder.decodeRegion(rect, new BitmapFactory.Options());
    } catch (Throwable e) {

    } finally {
        IOUtil.closeStream(is);
    }
    return croppedImage;
}