解决android4.4以上系统的相册选择图片后获取不到有效的URI

最近用到上传图片发现,当选择相册里的照片时,会出现无效的URI,android4.4以上系统,选择相册中的最近照片,也会报同样的错误。

找到如下两个方法:

方法一:

 /**  * 图片选择及拍照结果  */  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (resultCode != RESULT_OK) {
            return;
        }
        Uri uri = null;
        switch (requestCode) {
            case PHOTOZOOM:// 相册  if (data == null) {
                    return;
                }
                uri = data.getData();
 String[] proj = {MediaStore.Images.Media.DATA};  Cursor cursor = managedQuery(uri, proj, null, null, null);  int column_index = cursor  .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);  cursor.moveToFirst();  path = cursor.getString(column_index);// 图片在的路径  Intent intent3 = new Intent(mContext, UserRectClipHead.class);
                intent3.putExtra("path", path);
                Log.i("选择图片路径",path+"");
                startActivityForResult(intent3, IMAGE_COMPLETE);
                break;
            case PHOTOTAKE:// 拍照  path = photoSavePath + photoSaveName;
                uri = Uri.fromFile(new File(path));
                Intent intent2 = new Intent(mContext, UserRectClipHead.class);
                intent2.putExtra("path", path);
                startActivityForResult(intent2, IMAGE_COMPLETE);
                break;
            case IMAGE_COMPLETE:
                final String temppath = data.getStringExtra("path");
                Intent intent = new Intent();
                saveAllPath = FileUtils.saveBitmap(compressImage(BitmapUtils.UrlToBitmap(temppath)), ((int) (Math.random() * 10000)) + ".png");//质量压缩并存储得到path  intent.putExtra("path", saveAllPath);
// intent.putExtra("path", temppath);  setResult(0, intent);
                try {
                    cbuilder = new CustomDialogLoading.Builder(mContext, "上传中...");
                    mDialog = cbuilder.create();
                    mDialog.show();
                    postFile(saveAllPath);
                } catch (Exception e) {
                    // TODO Auto-generated catch block  e.printStackTrace();
                }
                add_img.setImageBitmap(BitmapUtils.UrlToBitmap(temppath));
                break;
            default:
                break;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

发现有些手机获取不到图片的path,后来经查找发现是因为android4.4以上的手机相册中有个最近的照片,是获取不到path路径的,更改如下可以解决:

 /**  * 图片选择及拍照结果  */  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (resultCode != RESULT_OK) {
            return;
        }
        Uri uri = null;
        switch (requestCode) {
            case PHOTOZOOM:// 相册  if (data == null) {
                    return;
                }
                uri = data.getData();  //此处为了解决android4.4 相册选择时的 选择最近图片 获取不到path问题  if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT){//4.4及以上  String wholeID = DocumentsContract.getDocumentId(uri);
                    String id = wholeID.split(":")[1];
                    String[] column = { MediaStore.Images.Media.DATA };
                    String sel = MediaStore.Images.Media._ID + "=?";
                    Cursor cursor = this.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, column,
                            sel, new String[] { id }, null);
                    int columnIndex = cursor.getColumnIndex(column[0]);
                    if (cursor.moveToFirst()) {
                        path = cursor.getString(columnIndex);
                    }
                    cursor.close();
                }else{//4.4以下,即4.4以上获取路径的方法  String[] projection = { MediaStore.Images.Media.DATA };
                    Cursor cursor = this.getContentResolver().query(uri, projection, null, null, null);
                    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                    cursor.moveToFirst();
                    path = cursor.getString(column_index);
                }
// }  Intent intent3 = new Intent(mContext, UserRectClipHead.class);
                intent3.putExtra("path", path);
                Log.i("x选择图片",path+"");
                startActivityForResult(intent3, IMAGE_COMPLETE);
                break;
            case PHOTOTAKE:// 拍照  path = photoSavePath + photoSaveName;
                uri = Uri.fromFile(new File(path));
                Intent intent2 = new Intent(mContext, UserRectClipHead.class);
                intent2.putExtra("path", path);
                startActivityForResult(intent2, IMAGE_COMPLETE);
                break;
            case IMAGE_COMPLETE:
                final String temppath = data.getStringExtra("path");
                Intent intent = new Intent();
                saveAllPath = FileUtils.saveBitmap(compressImage(BitmapUtils.UrlToBitmap(temppath)), ((int) (Math.random() * 10000)) + ".png");//质量压缩并存储得到path  intent.putExtra("path", saveAllPath);
// intent.putExtra("path", temppath);  setResult(0, intent);
                try {
                    cbuilder = new CustomDialogLoading.Builder(mContext, "上传中...");
                    mDialog = cbuilder.create();
                    mDialog.show();
                    postFile(saveAllPath);
                } catch (Exception e) {
                    // TODO Auto-generated catch block  e.printStackTrace();
                }
                add_img.setImageBitmap(BitmapUtils.UrlToBitmap(temppath));
                break;
            default:
                break;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

方法二:

  1. /** 
  2.  * 根据Uri获取图片绝对路径,解决Android4.4以上版本Uri转换 
  3.  * @param activity 
  4.  * @param imageUri 
  5.  * @author yaoxing 
  6.  * @date 2014-10-12 
  7.  */  
  8. @TargetApi(19)  
  9. public static String getImageAbsolutePath(Activity context, Uri imageUri) {  
  10.     if (context == null || imageUri == null)  
  11.         return null;  
  12.     if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, imageUri)) {  
  13.         if (isExternalStorageDocument(imageUri)) {  
  14.             String docId = DocumentsContract.getDocumentId(imageUri);  
  15.             String[] split = docId.split(":");  
  16.             String type = split[0];  
  17.             if ("primary".equalsIgnoreCase(type)) {  
  18.                 return Environment.getExternalStorageDirectory() + "/" + split[1];  
  19.             }  
  20.         } else if (isDownloadsDocument(imageUri)) {  
  21.             String id = DocumentsContract.getDocumentId(imageUri);  
  22.             Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));  
  23.             return getDataColumn(context, contentUri, nullnull);  
  24.         } else if (isMediaDocument(imageUri)) {  
  25.             String docId = DocumentsContract.getDocumentId(imageUri);  
  26.             String[] split = docId.split(":");  
  27.             String type = split[0];  
  28.             Uri contentUri = null;  
  29.             if ("image".equals(type)) {  
  30.                 contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;  
  31.             } else if ("video".equals(type)) {  
  32.                 contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;  
  33.             } else if ("audio".equals(type)) {  
  34.                 contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;  
  35.             }  
  36.             String selection = MediaStore.Images.Media._ID + "=?";  
  37.             String[] selectionArgs = new String[] { split[1] };  
  38.             return getDataColumn(context, contentUri, selection, selectionArgs);  
  39.         }  
  40.     } // MediaStore (and general)  
  41.     else if ("content".equalsIgnoreCase(imageUri.getScheme())) {  
  42.         // Return the remote address  
  43.         if (isGooglePhotosUri(imageUri))  
  44.             return imageUri.getLastPathSegment();  
  45.         return getDataColumn(context, imageUri, nullnull);  
  46.     }  
  47.     // File  
  48.     else if ("file".equalsIgnoreCase(imageUri.getScheme())) {  
  49.         return imageUri.getPath();  
  50.     }  
  51.     return null;  
  52. }  
  53.   
  54. public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {  
  55.     Cursor cursor = null;  
  56.     String column = MediaStore.Images.Media.DATA;  
  57.     String[] projection = { column };  
  58.     try {  
  59.         cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);  
  60.         if (cursor != null && cursor.moveToFirst()) {  
  61.             int index = cursor.getColumnIndexOrThrow(column);  
  62.             return cursor.getString(index);  
  63.         }  
  64.     } finally {  
  65.         if (cursor != null)  
  66.             cursor.close();  
  67.     }  
  68.     return null;  
  69. }  
  70.   
  71. /** 
  72.  * @param uri The Uri to check. 
  73.  * @return Whether the Uri authority is ExternalStorageProvider. 
  74.  */  
  75. public static boolean isExternalStorageDocument(Uri uri) {  
  76.     return "com.android.externalstorage.documents".equals(uri.getAuthority());  
  77. }  
  78.   
  79. /** 
  80.  * @param uri The Uri to check. 
  81.  * @return Whether the Uri authority is DownloadsProvider. 
  82.  */  
  83. public static boolean isDownloadsDocument(Uri uri) {  
  84.     return "com.android.providers.downloads.documents".equals(uri.getAuthority());  
  85. }  
  86.   
  87. /** 
  88.  * @param uri The Uri to check. 
  89.  * @return Whether the Uri authority is MediaProvider. 
  90.  */  
  91. public static boolean isMediaDocument(Uri uri) {  
  92.     return "com.android.providers.media.documents".equals(uri.getAuthority());  
  93. }  
  94.   
  95. /** 
  96.  * @param uri The Uri to check. 
  97.  * @return Whether the Uri authority is Google Photos. 
  98.  */  
  99. public static boolean isGooglePhotosUri(Uri uri) {  
  100.     return "com.google.android.apps.photos.content".equals(uri.getAuthority());  
  101. }  

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