如何保存我的ImageView图像到画廊（Android的发展） [英] How do I save my imageView image into Gallery (Android Development)

问题描述

我想创建一个onClick事件来保存的ImageView成一个点击按钮的手机图库，下面是我的code。它不保存到画廊，谁能帮助我弄清楚为什么？

  sharebtn.setOnClickListener（新View.OnClickListener（）{        @覆盖
        公共无效的onClick（视图B）{
            // TODO自动生成方法存根
            //试图保存图片            B = findViewById（R.id.imageView）;
            b.setDrawingCacheEnabled（真）;
                位图的位图= b.getDrawingCache（）;
                //文件文件=新的文件（/ DCIM /摄像机/ image.jpg文件）;
                文件根= Environment.getExternalStorageDirectory（）;
                文件cachePath =新的文件（root.getAbsolutePath（）+/DCIM/Camera/image.jpg）;
                尝试
                {
                    cachePath.createNewFile（）;
                    FileOutputStream中的ostream =新的FileOutputStream（cachePath）;
                    bitmap.com preSS（比较pressFormat.JPEG，100，ostream的）;
                    ostream.close（）;
                }
                赶上（例外五）
                {
                    e.printStackTrace（）;
                }        }
    }）;
 

解决方案

我这样做是为了保存形象的画廊。

 私人无效saveImageToGallery（）{
    imageview.setDrawingCacheEnabled（真）;
    位图B = imageview.getDrawingCache（）;
    Images.Media.insertImage（getActivity（）getContentResolver（），B，标题，描述）;
}
 

insertImage（）将返回字符串！= NULL 如果图像已被真的救了。
另外：需要在清单许可为android.permission.WRITE_EXTERNAL_STORAG​​E
并注意，这使该图像在已在库中的图像的列表的底部。

希望这有助于。

I am trying to create an onClick event to save an imageview into the phone Gallery by the click of a Button, below is my code. it does not save into the Gallery, can anyone help me figure out why?

    sharebtn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View b) {
            // TODO Auto-generated method stub
            //attempt to save the image

            b = findViewById(R.id.imageView);
            b.setDrawingCacheEnabled(true);
                Bitmap bitmap = b.getDrawingCache();
                //File file = new File("/DCIM/Camera/image.jpg");
                File root = Environment.getExternalStorageDirectory();
                File cachePath = new File(root.getAbsolutePath() + "/DCIM/Camera/image.jpg");
                try 
                {
                    cachePath.createNewFile();
                    FileOutputStream ostream = new FileOutputStream(cachePath);
                    bitmap.compress(CompressFormat.JPEG, 100, ostream);
                    ostream.close();
                } 
                catch (Exception e) 
                {
                    e.printStackTrace();
                }

        }
    });

解决方案

I do this to save Image in gallery.

private void saveImageToGallery(){
    imageview.setDrawingCacheEnabled(true);
    Bitmap b = imageview.getDrawingCache();
    Images.Media.insertImage(getActivity().getContentResolver(), b,title, description);
}

insertImage() will return a String != null if image has been really saved. Also: Needs permission in the manifest as "android.permission.WRITE_EXTERNAL_STORAGE" And note that this puts the image at the bottom of the list of images already in the gallery.

Hope this helps.

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