Posted on

title: android-ImageView保存图片到手机并更新媒体库
tags:

  • android
    categories:
  • 安卓

android-ImageView保存图片到手机并更新媒体库

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//调用执行
imageview.setDrawingCacheEnabled(true);
Bitmap imageBitmap = imageview.getDrawingCache();
if (imageBitmap != null) {
	new SaveImageTask().execute(imageBitmap);
}



	 
private class SaveImageTask extends AsyncTask<Bitmap, Void, String> {
	@Override
	protected String doInBackground(Bitmap... params) {
		String result = getResources().getString(R.string.save_picture_failed);
		try {
			String sdcard = Environment.getExternalStorageDirectory().toString();
//                String sdcard = Environment.getDataDirectory().toString();
//                String sdcard =  getBaseContext().getFilesDir().toString();;
			File fileDir=new File(getApplication().getExternalCacheDir(),"images");
			System.out.println(sdcard);

//                File file = new File(sdcard + "/DCIM");
			file = new File(sdcard+ "/Download");
			if (!file.exists()) {
				file.mkdirs();
			}
			fileName = "IMG_" + new Date().getTime() + ".jpg";
			File imageFile = new File(file.getAbsolutePath(),fileName);
			FileOutputStream outStream = null;
			outStream = new FileOutputStream(imageFile);
			Bitmap image = params[0];
			image.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
			outStream.flush();
			outStream.close();
			result = getResources().getString(R.string.save_picture_success,  file.getAbsolutePath());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}

	@Override
	protected void onPostExecute(String result) {
		Toast.makeText(getApplicationContext(),result,Toast.LENGTH_SHORT).show();

		share_code_img.setDrawingCacheEnabled(false);

		//后面两句是重点不然不会再媒体库中显示(或者重启后显示)
		try {
			MediaStore.Images.Media.insertImage(getBaseContext().getContentResolver(),
					file.getAbsolutePath(), fileName, null);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		getBaseContext().sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + file.getAbsolutePath()+fileName)));
	}
}