雷布斯的系统果然名不虚传，各种迷之报错。上传图片的时候发现图片的路径返回值与其他的手机不一样，所以封装了下面的工具来解决MIUI下无法获取到系统相册中的图片的问题。
工具类： /** * 小米、红米手机系列获取相册图片 * Cursor.moveToFirst()' on a null object reference * 工具处理类,处理小米手机各种ContentProvider空指针 */ public class MIUIPictureUtils { @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]; } } // 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 the remote address if (isGooglePhotosUri(uri)) return uri.getLastPathSegment(); return getDataColumn(context, uri, null, null); } // File else if ("file".equalsIgnoreCase(uri.getScheme())) { return uri.getPath(); } return null; } private 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 index = cursor.getColumnIndexOrThrow(column); return cursor.getString(index); } } finally { if (cursor != null) cursor.close(); } return null; } private static boolean isExternalStorageDocument(Uri uri) { return "com.android.externalstorage.documents".equals(uri.getAuthority()); } private static boolean isDownloadsDocument(Uri uri) { return "com.android.providers.downloads.documents".equals(uri.getAuthority()); } private static boolean isMediaDocument(Uri uri) { return "com.android.providers.media.documents".equals(uri.getAuthority()); } private static boolean isGooglePhotosUri(Uri uri) { return "com.google.android.apps.photos.content".equals(uri.getAuthority()); } }用法：
在onActivityResult中使用：
@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); String picPath = ""; if (BaseUtils.isMIUI()) {//如果是MIUI系统，单独调用获取图片地址的方法 Uri uri = data.getData(); picPath = MIUIPictureUtils.getPath(XXXXXX.this, uri); } else { picPath = mCreateBmpFactory.getBitmapFilePath(requestCode, resultCode, data); } Bitmap bmp = mCreateBmpFactory.getBitmapByOpt(picPath); ... }判断是否是MIUI的方法：
public static boolean isMIUI() { try { final BuildProperties prop = BuildProperties.newInstance(); return prop.getProperty(KEY_MIUI_VERSION_CODE, null) != null || prop.getProperty(KEY_MIUI_VERSION_NAME, null) != null || prop.getProperty(KEY_MIUI_INTERNAL_STORAGE, null) != null; } catch (final IOException e) { return false; } }上面的BuildProperties类：
public class BuildProperties { private final Properties properties; private BuildProperties() throws IOException { properties = new Properties(); properties.load(new FileInputStream(new File(Environment.getRootDirectory(), "build.prop"))); } public boolean containsKey(final Object key) { return properties.containsKey(key); } public boolean containsValue(final Object value) { return properties.containsValue(value); } public Set<Map.Entry<Object, Object>> entrySet() { return properties.entrySet(); } public String getProperty(final String name) { return properties.getProperty(name); } public String getProperty(final String name, final String defaultValue) { return properties.getProperty(name, defaultValue); } public boolean isEmpty() { return properties.isEmpty(); } public Enumeration<Object> keys() { return properties.keys(); } public Set<Object> keySet() { return properties.keySet(); } public int size() { return properties.size(); } public Collection<Object> values() { return properties.values(); } public static BuildProperties newInstance() throws IOException { return new BuildProperties(); } }