如何使用 imageview onclick 保存位图图像

本文介绍了如何使用 imageview onclick 保存位图图像的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在开发 android 中的图像着色.因此，当我单击另一个图像视图(如保存)时，将颜色应用于我的图像后，我必须将该图像保存到图库.

Am developing a coloring of images in android. So after applying colors to my image when i click another imageview like save, then i have to save that image to gallery.

推荐答案

从imageView获取位图:

imageview.buildDrawingCache(); Bitmap bm=imageview.getDrawingCache();

要将其保存在文件中:

OutputStream fOut = null; Uri outputFileUri; try { File root = new File(Environment.getExternalStorageDirectory() + File.separator + "folder_name" + File.separator); root.mkdirs(); File sdImageMainDirectory = new File(root, "myPicName.jpg"); outputFileUri = Uri.fromFile(sdImageMainDirectory); fOut = new FileOutputStream(sdImageMainDirectory); } catch (Exception e) { Toast.makeText(this, "Error occured. Please try again later.", Toast.LENGTH_SHORT).show(); } try { bmpress(Bitmap.CompressFormat.PNG, 100, fOut); fOut.flush(); fOut.close(); } catch (Exception e) { }