如何以编程方式减少图像中的Andr​​oid？ [英] How to reduce image programmatically in Android?

问题描述

我用下面的code编程服用屏幕截图在我的Andr​​oid应用程序。这是工作的罚款。我看到的问题是，它走的是整个布局的屏幕截图和观看。当我在平板执行此，它正在平板电脑更大尺寸的屏幕，所以我在观看一个问题。我可以减少这种图像的大小？例如：如果它走的观点，这是1920×1200的截图，我可以降低这种形象进一步编程为1200 * 650，像

？

 公共静态位图loadBitmapFromView（上下文的背景下，视图v）{
        DisplayMetrics DM = context.getResources（）getDisplayMetrics（）。        v.measure（MeasureSpec.makeMeasureSpec（dm.widthPixels，MeasureSpec.EXACTLY）
                MeasureSpec.makeMeasureSpec（dm.heightPixels，MeasureSpec.EXACTLY））;        v.layout（0，0，v.getMeasuredWidth（），v.getMeasuredHeight（））;        位图returnedBitmap = Bitmap.createBitmap（v.getMeasuredWidth（），
                v.getMeasuredHeight（），Bitmap.Config.ARGB_8888）;        帆布帆布=新的Canvas（returnedBitmap）;        v.draw（画布）;
        返回returnedBitmap;
    }
 

解决方案

试试这个：

 位图resizedImage = Bitmap.createScaledBitmap（old_bitmap，desiredimageWidth，desiredimageHeight，真正的）;
 

I am programmatically taking screenshot of the screen in my android app using the following code. It is working fine. The problem I see is, it is taking screenshot of the entire layout and viewing. When I execute this in Tablet, it is taking tablet the bigger size screen, so i have a problem in viewing. Can I reduce this image size? For example: If it is taking screenshot of the view, which is 1920 x 1200, Can I reduce this image further programmatically to 1200 * 650, like that?

public static Bitmap loadBitmapFromView(Context context, View v) {
        DisplayMetrics dm = context.getResources().getDisplayMetrics();

        v.measure(MeasureSpec.makeMeasureSpec(dm.widthPixels, MeasureSpec.EXACTLY),
                MeasureSpec.makeMeasureSpec(dm.heightPixels, MeasureSpec.EXACTLY));

        v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());

        Bitmap returnedBitmap = Bitmap.createBitmap(v.getMeasuredWidth(),
                v.getMeasuredHeight(), Bitmap.Config.ARGB_8888);

        Canvas canvas = new Canvas(returnedBitmap);

        v.draw(canvas);
        return returnedBitmap;
    }

解决方案

Try this:

Bitmap resizedImage = Bitmap.createScaledBitmap(old_bitmap,desiredimageWidth,desiredimageHeight, true);

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