即使用户不接受照片，照相机意图onActivityResult代码也会保存(空白)图像 [英] Camera intent onActivityResult code saves (blank) image even if photo was not accepted by user
问题描述
当用户单击叉号不接受照片时，它会以与接受照片时相同的方式结束意图.它将文件保存到设备库.但这是空白.单击十字不应该意味着resultCode！= RESULT_OK吗?我还缺少一张支票吗?谢谢.这是代码.等等，我要先保存图像，然后再进行活动结果...这是一个有缺陷的系统，但是它在官方的Android Developers网站上.如果有人可以提出修复建议，我将非常感激，因为我曾经将图像保存在onActivtyResult中，并且在某些手机上无法正常工作，从而导致了异常，所以我改成了这个.
When the user clicks the cross to not accept the photo, it ends the intent in the same way it does when they accept the photo they took. It saves a file to the device gallery. But it's blank. Shouldn't clicking the cross mean that resultCode != RESULT_OK? Is there one more check I am missing? Thanks. Here's the code. Wait, I'm saving the image before activity result...this is a flawed system, but it was on the official Android Developers website. If someone can suggest a fix I would be very greatful, because I used to save the image in onActivtyResult and it did not work on some phones, causing an exception, so I changed to this.
要启动意图:
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoFile));
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
}
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
ih.galleryAddPic(mCurrentPhotoPath, this.getApplicationContext());
return image;
}
onActivityResult中的摄影机意图案例:
The camera intent case within onActivityResult:
else if ((requestCode == REQUEST_TAKE_PHOTO) && (resultcode == RESULT_OK)){
mProfilePicPath = mCurrentPhotoPath;
mPortraitPhoto = ih.decodeSampledBitmapFromImagePath(mCurrentPhotoPath,
GlobalConstants.PROFILE_PICTURE_RESOLUTION,
GlobalConstants.PROFILE_PICTURE_RESOLUTION);
TextView tv = (TextView) findViewById(id.ProfilePicText);
tv.setText(mProfilePicPath);
}
}catch(Exception ex){
Log.d("shkdghrfb", ex.toString());
}
}
编辑:我将onActivityResult更改为此，但无济于事(空白图像此后仍在我的图库中，并且删除的值为true):
I changed onActivityResult to this, but to no avail (the blank image is still in my gallery afterwards, and the value of deleted is true):
else if (requestCode == REQUEST_TAKE_PHOTO){
if(resultcode == RESULT_OK){
File f = new File(mCurrentPhotoPath);
mProfilePicPath = null;
if (f.exists()) {
if (f.length() != 0){
mProfilePicPath = mCurrentPhotoPath;
mPortraitPhoto = ih.decodeSampledBitmapFromImagePath(mCurrentPhotoPath,
GlobalConstants.PROFILE_PICTURE_RESOLUTION,
GlobalConstants.PROFILE_PICTURE_RESOLUTION);
TextView tv = (TextView) findViewById(id.ProfilePicText);
tv.setText(mProfilePicPath);
}
else {
boolean deleted = f.delete();
if (deleted == true){
Log.d("camera0", "deleted");
}
else{
Log.d("camera0", "not deleted");
}
}
}
}
else{
File f = new File(mCurrentPhotoPath);
boolean deleted = f.delete();
if (deleted == true){
Log.d("camera", "deleted");
}
else{
Log.d("camera", "not deleted");
}
}
}
}catch(Exception ex){
Log.d("shkdghrfb", ex.toString());
}
}catch(Exception ex){
Log.d("shkdghrfb", ex.toString());
}
编辑，好吧，我相信我需要在删除后使用MediaScannerIntent扫描SD卡的适当区域，以使其显示出来，因为它现在似乎可以正常工作.
Edit Ok I believe I needed to scan the appropriate area of the SD card with a MediaScannerIntent after the delete, for it to show, as it seems to work now.
推荐答案
不是使用createImageFile()创建文件吗? 您可以保存photoFile，然后保存结果！= RESULT_OK将其删除
Aren't you creating file with createImageFile() ? You may save photoFile and on result!=RESULT_OK delete it
顺便说一句，相机应用程序(甚至是默认)可能返回错误的结果.在日志中检查它.如果是这样，那就别依赖结果了！检查创建的文件的大小.如果== 0-将其删除
By the way, camera apps(even default) may return wrong result. Check it in logs. If they do, just don't rely on result & check created file's size. If ==0 - delete it
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