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我想將圖庫中的位圖複製到SD卡上的路徑。從圖庫中讀取位圖並將其寫入sd卡失敗
此功能非常適用於從相機拍攝的圖像:
public void saveBitmap(Bitmap bitMap, Uri avatarUri) throws Exception{
File file = new File(avatarUri.toString());
// if (file.exists()) file.delete();
try {
OutputStream fOut = new FileOutputStream(file);
if (bitMap.compress(Bitmap.CompressFormat.PNG, 100, fOut)) {
fOut.flush();
fOut.close();
} else {
Log.d("123", "compress file");
}
} catch (Exception e) {
Log.d("123", "File not found file");
}
}
但是當我通過選擇從庫中的圖像:
void getImageFromGallery(Intent data) throws FileNotFoundException {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
Bitmap bitmap = BitmapFactory.decodeFile(picturePath);
avatarBitmap = bitmap;
}
,並使用saveBitmap()
方法保存此選擇的圖像,它會捕獲File not found
異常。
該方法生成一個文件夾並返回saveBitmap()
方法的URI。
public Uri generateAvatarImageUri(String patientName) {
Date date = new Date(0);
SimpleDateFormat sdf = new SimpleDateFormat ("yyyyMMddHHmmss");
String filename = sdf.format(date) + patientName;
return Uri.fromFile(new File(getExternalStorageDirectory(), avatarFolderPath+filename+".jpg"));
}
}
任何幫助?