如何保存与ImageView的位图图像的onclick [英] How to save a bitmap image with imageview onclick

问题描述

正在开发的图像在android的着色。因此，应用色彩来我的形象，当我点击另一个imageview的像保存后，以后我就保存图像gallery.So可有人告诉我，我该怎么办???达

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.So can someone tell me how can i do tat???

推荐答案

要得到ImageView的位图：

To get bitmap from imageview:

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

要保存在一个文件中：

 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 {
    bm.compress(Bitmap.CompressFormat.PNG, 100, fOut);
    fOut.flush();
    fOut.close();
   } catch (Exception e) {
   }

这篇关于如何保存与ImageView的位图图像的onclick的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！