Android 4.4从图库选择图片,获取图片路径

Intent intent=new Intent(Intent.ACTION_GET_CONTENT);//ACTION_OPEN_DOCUMENT  
intent.addCategory(Intent.CATEGORY_OPENABLE);  
intent.setType("image/jpeg");  
if(android.os.Build.VERSION.SDK_INT>=android.os.Build.VERSION_CODES.KITKAT){                  
        startActivityForResult(intent, SELECT_PIC_KITKAT);    
}else{                
        startActivityForResult(intent, SELECT_PIC);   
}  

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  
        } else if (isDownloadsDocument(uri)) { // DownloadsProvider    
            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);  
        } else if (isMediaDocument(uri)) {  // MediaProvider 
            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);  
        }  
    } else if ("content".equalsIgnoreCase(uri.getScheme())) {  // MediaStore (and general)    
        // Return the remote address  
        if (isGooglePhotosUri(uri))  
            return uri.getLastPathSegment();  
  
        return getDataColumn(context, uri, null, null);  
    }  else if ("file".equalsIgnoreCase(uri.getScheme())) {  // File
          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 index = cursor.getColumnIndexOrThrow(column);  
            return cursor.getString(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());  
}  
  
/** 
 * @param uri The Uri to check. 
 * @return Whether the Uri authority is Google Photos. 
 */  
public static boolean isGooglePhotosUri(Uri uri) {  
    return "com.google.android.apps.photos.content".equals(uri.getAuthority());  
}