我如何获得一个开放的，以我的资产的图像，将工作的SearchManager.SUGGEST_COLUMN_ICON_1列？ [英] How do I get a Uri to an image in my Assets that will work for the SearchManager.SUGGEST_COLUMN_ICON_1 column?

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问题描述

我已经成功地将我的应用程序的国家搜索到全局搜索功能，现在我想旁边显示的搜索建议每个国家的国旗。搜索在我的应用程序以这种方式工作，但我当然有列表和视图结合自己的控制权。所以我知道的标志都在那里，我可以使用他们在我的应用程序的其余部分。

麻烦来当我尝试在我的资产提供一个开放的，以.gif文件。根据搜索文档与键列的值 SearchManager.SUGGEST_COLUMN_ICON_1 应该是一个开放的我们的形象。

下面是什么code样子。为响应的ContentProvider 方法公开光标查询（URI URI，字符串[]投影，弦乐选择，字符串[] selectionArgs两个，字符串排序顺序）我创建一个 MatrixCursor 的映射列从我的国家数据库，那些由搜索工具必需的。国名显示了罚款，我可以选择它们，并正确地在我的申请作出答复。

我试图形成开放的三种不同的方式：

  //字符串flagUri =文件：/// android_asset /+ flagPath;
//字符串flagUri =文件：///资产/+ flagPath;
                    字符串flagUri =android.resource：//com.lesliesoftware.worldinfo.WorldInfoActivity/assets/+ flagPath;
                    columnValues​​.add（flagUri）;

它们都导致了同样的事情 - 一个接一个建议，我可以用空字符串的值，让我的应用程序图标

有一个开放的，将工作？我怎样才能获得该国国旗图标旁边的搜索建议？

由于伊恩

的全部源代码：

 私人光标搜索（查询字符串，INT限制）{
    查询= query.toLowerCase（）;
    的String [] requestedColumns =新的String [] {
            BaseColumns._ID，
            SearchManager.SUGGEST_COLUMN_TEXT_1，
            SearchManager.SUGGEST_COLUMN_ICON_1，
    };
    的String [] queryColumns =新的String [] {
            WorldInfoDatabaseAdapter.KEY_ROWID，
            WorldInfoDatabaseAdapter.KEY_COUNTRYNAME，
            WorldInfoDatabaseAdapter.KEY_COUNTRY code
    };

    返回packageResults（查询，requestedColumns，queryColumns，限制）;
}


私人光标packageResults（查询字符串，字符串[] requestedColumns，字符串[] queryMappedColumns，INT限制）{
    如果（requestedColumns.length！= queryMappedColumns.length）
        抛出新抛出：IllegalArgumentException（内部错误：请求的列没有映射到查询栏）;

    MatrixCursor结果=新MatrixCursor（requestedColumns）;

    //查询国家列表返回列：KEY_ROWID，KEY_COUNTRYNAME，KEY_COUNTRY code
    光标DBRESULTS = myDbHelper.getCountryList（查询）;

    //验证查询列可用
    对于（INT指数= 0;指数＆LT; queryMappedColumns.length;指数++）{
        INT COL = dbResults.getColumnIndex（queryMappedColumns [指数]）;
        如果（COL == -1）
            抛出新抛出：IllegalArgumentException（内部错误：请求的列'+
                    queryMappedColumns [指数] +不是从数据库返回的。）;
    }

    //遍历数据库结果建立请求的结果
    INT rowCount时= 0;
    而（dbResults.moveToNext（）及和放大器; rowCount等＆LT;限制）{
        矢量＆lt;串GT; columnValues​​ =新矢量＆lt;串GT; （）;
        对于（INT指数= 0;指数＆LT; requestedColumns.length;指数++）{
            如果（requestedColumns [指数] .compareTo（SearchManager.SUGGEST_COLUMN_ICON_1）== 0）{
                字符串flagPath =标志/小/+ dbResults.getString（
                        dbResults.getColumnIndexOrThrow（queryMappedColumns [指数]））
                        +-flag.gif;
//字符串flagUri =文件：/// android_asset /+ flagPath;
//字符串flagUri =文件：///资产/+ flagPath;
                字符串flagUri =android.resource：//com.lesliesoftware.worldinfo.WorldInfoActivity/assets/+ flagPath;
                columnValues​​.add（flagUri）;
            }  其他  {
                //从数据库中添加映射查询列值
                字符串COLVALUE = dbResults.getString（dbResults.getColumnIndexOrThrow（queryMappedColumns [指数]））;
                columnValues​​.add（COLVALUE）;
            }
        }

        results.addRow（columnValues​​）;
        rowCount等++;
    }

    返回结果;
}

编辑： 我曾尝试过其他的变化包括从移动资产将图像的原始文件夹。毫无效果。这里是URI的我尝试：

  flagUriStr =android.resource：//com.lesliesoftware.worldinfo/raw/flags/small/+
    国家code +-flag.gif;

flagUriStr =android.resource：//com.lesliesoftware.worldinfo/assets/flags/small/+
    国家code +-flag.gif;

flagUriStr =android.resource：//com.lesliesoftware.worldinfo/assets/flags/small/+
    国家code +-flag;

flagUriStr =android.resource：//com.lesliesoftware.worldinfo/raw/+
    国家code +-flag.gif;

flagUriStr =android.resource：//com.lesliesoftware.worldinfo/raw/+
    国家code +-flag;

这是没有工作的唯一的URI是，如果我移动的测试标志到我绘制的文件夹：

  flagUriStr =android.resource：//com.lesliesoftware.worldinfo/+
    R.drawable.small_ca_flag;

解决方案

可悲的是经过一番摸索我已经达到了，你不能一个URI返回图像资源的搜索工具的结论。我所做的，而不是被移动我的标志图像资源（这样它们就不会弄乱我的应用程序的资源，我创建了标志图像库），并利用资源的URI的。所以，在我的供应商我有code，看起来像这样的一个映射数据库结果搜索结果的循环：

 如果（requestedColumns [指数] .compareTo（SearchManager.SUGGEST_COLUMN_ICON_1）== 0）{
                //翻译全国code到一个旗帜图标的URI
                字符串国code = dbResults.getString（
                        dbResults.getColumnIndexOrThrow（queryMappedColumns [指数]））;

                INT flagImageID = FlagLookup.smallFlagResourceID（国家code）;
                字符串flagUriStr =android.resource：//com.lesliesoftware.worldinfo/+ flagImageID;
                columnValues​​.add（flagUriStr）;
            }

和查找code，它是这样的：

 静态公众诠释smallFlagResourceID（字符串国code）{
    如果（国家code == NULL ||国家code.length（）== 0）
        返回R.drawable.flag_small_none;

    如果（国家code.equalsIgnoreCase（AA））
        返回R.drawable.flag_small_aa;
    否则，如果（国家code.equalsIgnoreCase（AC））
        返回R.drawable.flag_small_ac;
    否则，如果（国家code.equalsIgnoreCase（AE））
        返回R.drawable.flag_small_ae;
    ...

我只是要确保我创建一个测试，验证具有标志所有国家返回预期的结果。

I have successfully integrated my app's country search into the global search facility and now I am trying to display each country's flag next to the search suggestions. Search inside my app works this way but of course I have control of the list and its view binding myself. So I know the flags are all there and I can use them in the rest of my app.

The trouble comes when I try to supply a Uri to a .gif file in my Assets. According to the search documentation the value of the column with the key SearchManager.SUGGEST_COLUMN_ICON_1 should be a Uri to the image.

Below is what the code looks like. In response to the ContentProvider method public Cursor query (Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) I am creating a MatrixCursor that maps columns from my country database to those required by the search facility. The country names show up fine and I can select them and correctly respond in my application.

I have tried forming the Uri three different ways:

//                    String flagUri = "file:///android_asset/" + flagPath;
//                    String flagUri = "file:///assets/" + flagPath;
                    String flagUri = "android.resource://com.lesliesoftware.worldinfo.WorldInfoActivity/assets/" + flagPath;
                    columnValues.add (flagUri);

They all lead to the same thing - my application icon next to each suggestion which I can get by using a value of empty string.

Is there a Uri that will work? How can I get the country flag icon next to the search suggestions?

Thanks Ian

The full source:

private Cursor search (String query, int limit)  {
    query = query.toLowerCase ();
    String[] requestedColumns = new String[]  {
            BaseColumns._ID, 
            SearchManager.SUGGEST_COLUMN_TEXT_1,
            SearchManager.SUGGEST_COLUMN_ICON_1,
    };
    String[] queryColumns = new String[]  {
            WorldInfoDatabaseAdapter.KEY_ROWID, 
            WorldInfoDatabaseAdapter.KEY_COUNTRYNAME,
            WorldInfoDatabaseAdapter.KEY_COUNTRYCODE
    };

    return packageResults (query, requestedColumns, queryColumns, limit);
}


private Cursor packageResults (String query, String[] requestedColumns, String[] queryMappedColumns, int limit)  {
    if (requestedColumns.length != queryMappedColumns.length)
        throw new IllegalArgumentException ("Internal error: requested columns do not map to query columns");

    MatrixCursor results = new MatrixCursor (requestedColumns);

    //  Query the country list returns columns: KEY_ROWID, KEY_COUNTRYNAME, KEY_COUNTRYCODE
    Cursor dbResults = myDbHelper.getCountryList (query);

    //  Verify that the query columns are available
    for (int index = 0; index < queryMappedColumns.length; index++)  {
        int col = dbResults.getColumnIndex (queryMappedColumns[index]);
        if (col == -1)
            throw new IllegalArgumentException ("Internal error: requested column '" + 
                    queryMappedColumns[index] + "' was not returned from the database.");
    }

    //  Loop over the database results building up the requested results
    int rowCount = 0;
    while (dbResults.moveToNext ()  &&  rowCount < limit)  {
        Vector<String> columnValues = new Vector<String> ();
        for (int index = 0; index < requestedColumns.length; index++)  {
            if (requestedColumns[index].compareTo (SearchManager.SUGGEST_COLUMN_ICON_1) == 0)  {
                String flagPath = "flags/small/" + dbResults.getString (
                        dbResults.getColumnIndexOrThrow (queryMappedColumns[index]))
                        + "-flag.gif";
//                    String flagUri = "file:///android_asset/" + flagPath;
//                    String flagUri = "file:///assets/" + flagPath;
                String flagUri = "android.resource://com.lesliesoftware.worldinfo.WorldInfoActivity/assets/" + flagPath;
                columnValues.add (flagUri);
            }  else  {
                //  Add the mapped query column values from the database
                String colValue = dbResults.getString (dbResults.getColumnIndexOrThrow (queryMappedColumns[index]));
                columnValues.add (colValue);
            }
        }

        results.addRow (columnValues);
        rowCount++;
    }

    return results;
}

EDIT: I have tried other variations including moving the images from the assets to the raw folder. Nothing worked. Here are the uri's I tried:

flagUriStr = "android.resource://com.lesliesoftware.worldinfo/raw/flags/small/" + 
    countryCode + "-flag.gif";

flagUriStr = "android.resource://com.lesliesoftware.worldinfo/assets/flags/small/" + 
    countryCode + "-flag.gif";

flagUriStr = "android.resource://com.lesliesoftware.worldinfo/assets/flags/small/" + 
    countryCode + "-flag";

flagUriStr = "android.resource://com.lesliesoftware.worldinfo/raw/" + 
    countryCode + "-flag.gif";

flagUriStr = "android.resource://com.lesliesoftware.worldinfo/raw/" + 
    countryCode + "-flag";

The only uri that did work was if I moved a test flag into my drawable folder:

flagUriStr = "android.resource://com.lesliesoftware.worldinfo/" + 
    R.drawable.small_ca_flag;

解决方案

Sadly after much searching around I have reached the conclusion that you cannot return a uri to an image asset to the search facility. What I did instead was move my flag images to the resources (so they do not clutter up my app's resources I created a library for the flag images) and use resource uri's. So, in my provider I have code that looks like this in the loop that maps database results to search results:

            if (requestedColumns[index].compareTo (SearchManager.SUGGEST_COLUMN_ICON_1) == 0)  {
                //  Translate the country code into a flag icon uri
                String countryCode = dbResults.getString (
                        dbResults.getColumnIndexOrThrow (queryMappedColumns[index]));

                int flagImageID = FlagLookup.smallFlagResourceID (countryCode);
                String flagUriStr = "android.resource://com.lesliesoftware.worldinfo/" + flagImageID;
                columnValues.add (flagUriStr);
            }

and look up code that looks like this:

static public int smallFlagResourceID (String countryCode)  {
    if (countryCode == null || countryCode.length () == 0)
        return R.drawable.flag_small_none;

    if (countryCode.equalsIgnoreCase ("aa"))
        return R.drawable.flag_small_aa;
    else if (countryCode.equalsIgnoreCase ("ac"))
        return R.drawable.flag_small_ac;
    else if (countryCode.equalsIgnoreCase ("ae"))
        return R.drawable.flag_small_ae;
    ...

I will just have to make sure I create a test that verifies that all countries that have flags returns the expected results.

这篇关于我如何获得一个开放的，以我的资产的图像，将工作的SearchManager.SUGGEST_COLUMN_ICON_1列？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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