前一段时间,公司自己要求做多客服开发,但是对于发送图片这一块,当时很苦恼,我用自己的手机(米2)测试,不管是本地,还是云相册,最新照片。都没有问题,但是测试那边一直说图片发不了,而且还会崩。很纳闷。
后来经过debug,发现4.4以上的手机,它的图片路径居然不一样,有file://开头的,也有content://开头的,还有/mnt/sdcard/开头的,坑爹啊,我自己的手机是4.1的,不一样。
4.4以前的路径都是Uri : content:
//media/extenral/images/***,我们在回的时候这样用就可以获取到路径。
if (resultCode != RESULT_OK) { //此处的 RESULT_OK 是系统自定义 return; } Bitmap bm = null; //外界的程序访问ContentProvider所提供数据 可以通过ContentResolver接口 ContentResolver resolver = getContentResolver(); if (requestCode == IMAGE_CODE) { try { Uri originalUri = data.getData(); //获得图片的uri bm = MediaStore.Images.Media.getBitmap(resolver, originalUri); //显得到bitmap图片 这里开始的第二部分,获取图片的路径: String[] proj = {MediaStore.Images.Media.DATA}; Cursor cursor = managedQuery(originalUri, proj, null, null, null); int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); cursor.moveToFirst(); //最后根据索引值获取图片路径 String path = cursor.getString(column_index); }catch (IOException e) { Log.e(TAG,e.toString()); } }
4.4翻阅api 你就会发现,图片的路径边的不统一,采用原来的方法,有的图片就会发送不了,经过查找后发现以下这种方法完美解决了我的问题
public class GetPathUri4kitk { /** * 专为Android4.4设计的从Uri获取文件绝对路径,以前的方法已不好使 */ @SuppressLint("NewApi") public static String getPath(final Context context, final Uri uri) { final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT; // DocumentProvider if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) { // ExternalStorageProvider if (isExternalStorageDocument(uri)) { final String docId = DocumentsContract.getDocumentId(uri); final String[] split = docId.split(":"); final String type = split[0]; if ("primary".equalsIgnoreCase(type)) { return Environment.getExternalStorageDirectory() + "/" + split[1]; } // TODO handle non-primary volumes } // DownloadsProvider else if (isDownloadsDocument(uri)) { final String id = DocumentsContract.getDocumentId(uri); final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id)); return getDataColumn(context, contentUri, null, null); } // MediaProvider else if (isMediaDocument(uri)) { final String docId = DocumentsContract.getDocumentId(uri); final String[] split = docId.split(":"); final String type = split[0]; Uri contentUri = null; if ("image".equals(type)) { contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; } else if ("video".equals(type)) { contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI; } else if ("audio".equals(type)) { contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; } final String selection = "_id=?"; final String[] selectionArgs = new String[] { split[1] }; return getDataColumn(context, contentUri, selection, selectionArgs); } } // MediaStore (and general) else if ("content".equalsIgnoreCase(uri.getScheme())) { return getDataColumn(context, uri, null, null); } // File else if ("file".equalsIgnoreCase(uri.getScheme())) { return uri.getPath(); } return null; } /** * Get the value of the data column for this Uri. This is useful for * MediaStore Uris, and other file-based ContentProviders. * * @param context * The context. * @param uri * The Uri to query. * @param selection * (Optional) Filter used in the query. * @param selectionArgs * (Optional) Selection arguments used in the query. * @return The value of the _data column, which is typically a file path. */ public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) { Cursor cursor = null; final String column = "_data"; final String[] projection = { column }; try { cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null); if (cursor != null && cursor.moveToFirst()) { final int column_index = cursor.getColumnIndexOrThrow(column); return cursor.getString(column_index); } } finally { if (cursor != null) cursor.close(); } return null; } /** * @param uri * The Uri to check. * @return Whether the Uri authority is ExternalStorageProvider. */ public static boolean isExternalStorageDocument(Uri uri) { return "com.android.externalstorage.documents".equals(uri.getAuthority()); } /** * @param uri * The Uri to check. * @return Whether the Uri authority is DownloadsProvider. */ public static boolean isDownloadsDocument(Uri uri) { return "com.android.providers.downloads.documents".equals(uri.getAuthority()); } /** * @param uri * The Uri to check. * @return Whether the Uri authority is MediaProvider. */ public static boolean isMediaDocument(Uri uri) { return "com.android.providers.media.documents".equals(uri.getAuthority()); } }