英文:
Copy the gallery photo into my app's folder
问题
//activity A intent
Intent intent = new Intent(Intent.ACTION_PICK, null);
intent.setType("image/*");
intent.putExtra("return-data", true);
startActivityForResult(intent, Constant.ACTION.LOAD_GALLERY_ACTION);
//this is onActicityResult function
case Constant.ACTION.LOAD_GALLERY_ACTION:
Uri uri = data.getData();
if (mImage.size() < maxAddPic) {
mImage.add(copyGalleryPic(uri));
adapter.notifyDataSetChanged();
}
break;
//to copy the gallery photo, return the new file uri.
private Uri copyGalleryPic(Uri uri) {
String filePath = Environment.getExternalStorageDirectory() + "/images/" + "diary" + System.currentTimeMillis() + ".jpg";
File outputFile = new File(filePath);
if (!outputFile.getParentFile().exists()) {
outputFile.getParentFile().mkdirs();
}
Bitmap bitmap;
try (FileOutputStream fos = new FileOutputStream(outputFile)) {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
} catch (IOException e) {
// ... handle IO exception
}
Uri newUri = FileProvider.getUriForFile(CreateDiaryActivity.this, "com.example.diary.cr", outputFile);
return newUri;
}
However, there are some errors:
The intent returns the URI:
"content://com.google.android.apps.photos.contentprovider/-1/1/content%3A%2F%2Fmedia%2Fexternal%2Fimages%2Fmedia%2F29/ORIGINAL/NONE/41130179"
But the debug info shows the error in this line:
"bitmap=MediaStore.Images.Media.getBitmap(getContentResolver(), uri);"
Error: java.io.FileNotFoundException: open failed: ENOENT (No such file or directory)
Please help me! Love you guys!
My English is not very good. Please use simple words. Thank you!
英文:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
//activity A intent
Intent intent = new Intent(Intent.ACTION_PICK,null);
intent.setType("image/*");
intent.putExtra("return-data", true);
startActivityForResult(intent,Constant.ACTION.LOAD_GALLERY_ACTION);
//this is onActicityResult function
case Constant.ACTION.LOAD_GALLERY_ACTION:
Uri uri = data.getData();
if(mImage.size()<maxAddPic) {
mImage.add(copyGalleryPic(uri));
adapter.notifyDataSetChanged();
}
break;
//to copy the gallery photo,return the new file uri.
private Uri copyGalleryPic(Uri uri) {
String filePath = Environment.getExternalStorageDirectory() + "/images/"+"diary"+System.currentTimeMillis()+".jpg";
File outputFile = new File(filePath);
if (!outputFile.getParentFile().exists()) {
outputFile.getParentFile().mkdirs();
}
Bitmap bitmap;
try (FileOutputStream fos = new FileOutputStream(outputFile)) {
bitmap=MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
bitmap.compress(Bitmap.CompressFormat.JPEG,100,fos);
} catch (IOException e) {
// ... handle IO exception
}
Uri newUri = FileProvider.getUriForFile(CreateDiaryActivity.this,"com.example.diary.cr",outputFile);
return newUri;
}
but there are some errors
the intent returns uri
> "content://com.google.android.apps.photos.contentprovider/-1/1/content%3A%2F%2Fmedia%2Fexternal%2Fimages%2Fmedia%2F29/ORIGINAL/NONE/41130179"
but debug info shows the code
> "bitmap=MediaStore.Images.Media.getBitmap(getContentResolver(),
> uri);" error : java.io.FileNotFoundException: open failed: ENOENT
> (No such file or directory)
please help me ! Love you guys!
My English is not well. please use Simple words. Thank you!
答案1
得分: 0
* 你使用的是哪个安卓版本和哪个SDK版本？我有一个在安卓2.2上无法在安卓7下接收意图权限的应用，请参考：https://github.com/k3b/intent-intercept/issues/4。我认为重新使用更新的安卓SDK进行重新编译可能会有帮助。
* 如果您使用InputStream通过[getContentResolver().openInputStream(data.getData(uri))]来读取选定的图像，您的程序是否正常工作？（链接：https://developer.android.com/reference/android/content/ContentResolver#openInputStream(android.net.Uri)）
* 自从安卓4.4起，ACTION_PICK被ACTION_OPEN_DOCUMENT取代。我最近使用ACTION_OPEN_DOCUMENT以及openInputStream的应用程序都能如预期般工作。
英文:
- which android version and which sdk-version are you using? I have an android-2.2 app that cannot receive intent permissions under android 7 see: https://github.com/k3b/intent-intercept/issues/4. I assume that recompiling with a more recent android-sdk might help.
- Does you program work if you use an InputStream to read the picked image via getContentResolver().openInputStream(data.getData(uri)).
- Since android-4.4 ACTION_PICK was replaced by ACTION_OPEN_DOCUMENT. My recent apps that use ACTION_OPEN_DOCUMENT together with openInputStream work as expected
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