[英]Android Camera App (picture only shows up after reboot)
I'm having trouble with my camera app. 我的相机应用出现问题。 I'm trying to make it snap a picture and then save it to a folder of the android device and it seems to be doing that, but the pictures only show up after I reboot the device. 我正在尝试使其抓拍图片,然后将其保存到android设备的文件夹中,似乎正在这样做,但是这些图片仅在我重启设备后才会显示。 Furthermore, I seem to always end up with the result code of 0, so I never get to update my imageView. 此外,我似乎总是以结果代码0结束,因此我永远也无法更新imageView。 Why do I always get that result code? 为什么我总是得到那个结果代码?
/** Create a file Uri for saving an image */
private static Uri getOutputMediaFileUri(){
return Uri.fromFile(getOutputMediaFile());
}
/** Create a File for saving an image */
private static File getOutputMediaFile(){
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "myAppPics");
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("myAppPics", "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
return mediaFile;
}
/** Opening App*/
public void open(){
intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE_SECURE);
fileUri = getOutputMediaFileUri(); // create a file to save the image
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
startActivityForResult(intent, 0);
}
@Override
/**when you get the activity result*/
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
//if you want to keep the picture
if (resultCode == RESULT_OK )
{
//grab image data
Bundle extras = data.getExtras();
Bitmap bp = (Bitmap) extras.get("data");
//make imageView hold that image now
myImgV.setImageBitmap(bp);
Log.d("MyCameraApp", "update image");
}
//else just goes back to previously chosen image
else
Log.d("MyCameraApp", "don't want to update image "+resultCode);
}
To see the picture taken refresh the gallery using 要查看拍摄的照片,请使用刷新画廊
refreshGallery(String fileUrl, Context ctx) {
Intent mediaScanIntent = new Intent(
Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(fileUrl);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
ctx.sendBroadcast(mediaScanIntent);
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.