我有一个SearchManager
设置,其中的建议下拉列表将随用户类型显示。结果来自我的服务器(http)。我想为每个选项显示一个图标(如果文件实际上确实存在)。
查看文档,我看到常量列SUGGEST_COLUMN_ICON_1
的选项允许这些选项:
Column name for suggestions cursor. Optional. If your cursor includes this column, then all suggestions will be provided in a format that includes space for two small icons, one at the left and one at the right of each suggestion. The data in the column must be a resource ID of a drawable, or a URI in one of the following formats:
content (SCHEME_CONTENT)
android.resource (SCHEME_ANDROID_RESOURCE)
file (SCHEME_FILE)
我所拥有的只是一个URL。哪个选项最适合我?
这是我正在执行的
class
:public class MyCustomSuggestionProvider extends SearchRecentSuggestionsProvider {
public static final String AUTHORITY = "---.MyCustomSuggestionProvider";
public static final int MODE = DATABASE_MODE_QUERIES;
private final static String[] COLUMN_NAMES = {BaseColumns._ID,
SearchManager.SUGGEST_COLUMN_TEXT_1,
SearchManager.SUGGEST_COLUMN_TEXT_2,
SearchManager.SUGGEST_COLUMN_QUERY,
SearchManager.SUGGEST_COLUMN_INTENT_DATA,
SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA,
SearchManager.SUGGEST_COLUMN_ICON_1,
SearchManager.SUGGEST_COLUMN_INTENT_ACTION};
public MyCustomSuggestionProvider() {
setupSuggestions(AUTHORITY, MODE);
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
Cursor recentCursor = super.query(uri, projection, selection,
selectionArgs, sortOrder);
String query = selectionArgs[0];
if (query == null || query.length() < 3) {
return recentCursor;
}
final MatrixCursor customCursor = new MatrixCursor(COLUMN_NAMES);
// Get web results from Retrofit Library
List<TheProfile> suggestions = RestClient.get().getCustomSearch(query, MyApp.getUserId());
for (TheProfile suggestion : suggestions) {
Uri searchIconUri = Uri.parse("http:/---/profile_images/" + String.valueOf(suggestion.id) + ".png");
try {
customCursor.addRow(new Object[]{
suggestion.id, suggestion.profile, suggestion.subcategory, suggestion.profile, suggestion.profile, suggestion.subcategory, searchIconUri, "android.intent.action.SEARCH"});
} catch (Exception e) {
e.printStackTrace();
}
}
return customCursor;
}
}
最佳答案
对于那些像我一样仍在寻找该问题答案的人。它与我的代码非常相似,因此我决定共享它。我花了几个小时将所有内容放在一起。也许,我会为某人节省一些时间。
首先,您需要Glide library。
将其添加到应用程序的build.gradle文件中:
repositories {
mavenCentral() // jcenter() works as well because it pulls from Maven Central
}
dependencies {
compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.android.support:support-v4:19.1.0'
}
现在,让我们对问题的代码进行一些更改(在
MyCustomSuggestionProvider
类中):把它放在你的
for (TheProfile suggestion : suggestions) {
里面FutureTarget<File> futureTarget = Glide
.with(getContext().getApplicationContext())
.load(searchIcon)
.downloadOnly(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL);
File cacheFile = futureTarget.get();
Uri searchIconUri = Uri.fromFile(cacheFile);
请注意以下代码行:
.with(getContext().getApplicationContext())
这对于获取应用程序上下文非常重要,而不仅仅是上下文,因为我们不会在ImageView中显示bmp。 Official Glide documentation用于这种类型的Glide用法。毕竟,您可以致电:
// do things with bitmap and then release when finished:
Glide.clear(futureTarget);
关于android - 使用SUGGEST_COLUMN_ICON_1的网络URL获得搜索建议,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/32173898/