\u5728activity\u5373\u53ef:<\/p>\n
public class UploadActivity extends Activity {\r\n\r\n public final static int REQUEST_CODE = 1000;\r\n\r\n @Override\r\n protected void onCreate(Bundle savedInstanceState) {\r\n super.onCreate(savedInstanceState);\r\n\r\n Intent intent = new Intent(Intent.ACTION_GET_CONTENT);\r\n intent.setType(\"*\/*\"); \/\/\u8bbe\u7f6e\u7c7b\u578b\uff0c\u4efb\u610f\u7c7b\u578b\r\n intent.addCategory(Intent.CATEGORY_OPENABLE);\r\n\r\n this.startActivityForResult(intent, REQUEST_CODE);\r\n }\r\n\r\n @Override\r\n protected void onActivityResult(int requestCode, int resultCode, Intent data) {\r\n super.onActivityResult(requestCode, resultCode, data);\r\n \/\/if (requestCode == REQUEST_CODE && resultCode == 200) {\r\n if (data == null) {\r\n \/\/ \u7528\u6237\u672a\u9009\u62e9\u4efb\u4f55\u6587\u4ef6\uff0c\u76f4\u63a5\u8fd4\u56de\r\n return;\r\n }\r\n\r\n Uri uri = data.getData(); \/\/ \u83b7\u53d6\u7528\u6237\u9009\u62e9\u6587\u4ef6\u7684URI\r\n\r\n String path = uri.getPath();\r\n Toast.makeText(this, \"path=\"+path, Toast.LENGTH_SHORT).show();\r\n \r\n String truePath = this.getPath(this,uri);\r\n Toast.makeText(this, \"truePath=\"+truePath, Toast.LENGTH_SHORT).show();\r\n\r\n File file = new File(truePath);\r\n Toast.makeText(this, \"file.exists()=\"+file.exists(), Toast.LENGTH_SHORT).show();\r\n\r\n Intent intent = new Intent();\r\n intent.putExtra(\"truePath\", truePath);\r\n setResult(Activity.RESULT_OK, intent);\r\n finish();\r\n\r\n }\r\n\r\n \/**\r\n * \u4e13\u4e3aAndroid4.4\u8bbe\u8ba1\u7684\u4eceUri\u83b7\u53d6\u6587\u4ef6\u7edd\u5bf9\u8def\u5f84\uff0c\u4ee5\u524d\u7684\u65b9\u6cd5\u5df2\u4e0d\u597d\u4f7f\r\n *\/\r\n @SuppressLint(\"NewApi\")\r\n public String getPath(final Context context, final Uri uri) {\r\n\r\n final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;\r\n\r\n \/\/ DocumentProvider\r\n if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {\r\n \/\/ ExternalStorageProvider\r\n if (isExternalStorageDocument(uri)) {\r\n final String docId = DocumentsContract.getDocumentId(uri);\r\n final String[] split = docId.split(\":\");\r\n final String type = split[0];\r\n\r\n if (\"primary\".equalsIgnoreCase(type)) {\r\n return Environment.getExternalStorageDirectory() + \"\/\" + split[1];\r\n }\r\n }\r\n \/\/ DownloadsProvider\r\n else if (isDownloadsDocument(uri)) {\r\n\r\n final String id = DocumentsContract.getDocumentId(uri);\r\n final Uri contentUri = ContentUris.withAppendedId(\r\n Uri.parse(\"content:\/\/downloads\/public_downloads\"), Long.valueOf(id));\r\n\r\n return getDataColumn(context, contentUri, null, null);\r\n }\r\n \/\/ MediaProvider\r\n else if (isMediaDocument(uri)) {\r\n final String docId = DocumentsContract.getDocumentId(uri);\r\n final String[] split = docId.split(\":\");\r\n final String type = split[0];\r\n\r\n Uri contentUri = null;\r\n if (\"image\".equals(type)) {\r\n contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;\r\n } else if (\"video\".equals(type)) {\r\n contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;\r\n } else if (\"audio\".equals(type)) {\r\n contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;\r\n } else if (\"document\".equals(type)) {\r\n contentUri = MediaStore.Files.getContentUri(\"external\");\r\n }\r\n\r\n final String selection = \"_id=?\";\r\n final String[] selectionArgs = new String[]{split[1]};\r\n\r\n return getDataColumn(context, contentUri, selection, selectionArgs);\r\n }\r\n }\r\n \/\/ MediaStore (and general)\r\n else if (\"content\".equalsIgnoreCase(uri.getScheme())) {\r\n return getDataColumn(context, uri, null, null);\r\n }\r\n \/\/ File\r\n else if (\"file\".equalsIgnoreCase(uri.getScheme())) {\r\n return uri.getPath();\r\n }\r\n return null;\r\n }\r\n\r\n \/**\r\n * Get the value of the data column for this Uri. This is useful for\r\n * MediaStore Uris, and other file-based ContentProviders.\r\n *\r\n * @param context The context.\r\n * @param uri The Uri to query.\r\n * @param selection (Optional) Filter used in the query.\r\n * @param selectionArgs (Optional) Selection arguments used in the query.\r\n * @return The value of the _data column, which is typically a file path.\r\n *\/\r\n public String getDataColumn(Context context, Uri uri, String selection,\r\n String[] selectionArgs) {\r\n\r\n Cursor cursor = null;\r\n final String column = \"_data\";\r\n final String[] projection = {column};\r\n\r\n try {\r\n cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,\r\n null);\r\n if (cursor != null && cursor.moveToFirst()) {\r\n final int column_index = cursor.getColumnIndexOrThrow(column);\r\n return cursor.getString(column_index);\r\n }\r\n } finally {\r\n if (cursor != null)\r\n cursor.close();\r\n }\r\n return null;\r\n }\r\n\r\n \/**\r\n * @param uri The Uri to check.\r\n * @return Whether the Uri authority is ExternalStorageProvider.\r\n *\/\r\n public boolean isExternalStorageDocument(Uri uri) {\r\n return \"com.android.externalstorage.documents\".equals(uri.getAuthority());\r\n }\r\n\r\n \/**\r\n * @param uri The Uri to check.\r\n * @return Whether the Uri authority is DownloadsProvider.\r\n *\/\r\n public boolean isDownloadsDocument(Uri uri) {\r\n return \"com.android.providers.downloads.documents\".equals(uri.getAuthority());\r\n }\r\n\r\n \/**\r\n * @param uri The Uri to check.\r\n * @return Whether the Uri authority is MediaProvider.\r\n *\/\r\n public boolean isMediaDocument(Uri uri) {\r\n return \"com.android.providers.media.documents\".equals(uri.getAuthority());\r\n }\r\n\r\n}<\/pre>\n <\/p>\n
\u6ce8\u610f\uff1a\u8bf7\u8bb0\u5f97\u5f00\u542f\u6587\u4ef6\u8bfb\u5199\u6743\u9650\uff0c\u5426\u5219\u83b7\u53d6\u5230\u7684\u6587\u4ef6\u8def\u5f84\u4e3anull\uff1a<\/p>\n
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