Android How to preview an image, using its file path from SDcard, from my application

问题

File is present in sdcard/image.jpg
I would like to create my own application (activity). On a button press, the image stored in the sdcard needs to be displayed using the built-in image viewer. On pressing the back button from the Image viewer, it should go back to my running application.

Need some help.

回答1:

Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, 1);

This code use for display all images from your SD card

回答2:

you can create an Intent with proper uri and mimetype for this.

Intent i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse("file:///sdcard/image.jpg"), "image/jpeg");
startActivity(i);

来源：https://stackoverflow.com/questions/3820949/android-how-to-preview-an-image-using-its-file-path-from-sdcard-from-my-applic