要实现在Android应用中使用JSoup搜索并检索结果,您可以按照以下步骤进行操作:
dependencies {
implementation 'org.jsoup:jsoup:1.13.1'
}
import android.os.AsyncTask;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.io.IOException;
public class SearchTask extends AsyncTask {
private SearchCallback callback;
public SearchTask(SearchCallback callback) {
this.callback = callback;
}
@Override
protected Document doInBackground(String... params) {
String searchQuery = params[0];
Document document = null;
try {
document = Jsoup.connect("https://example.com/search?q=" + searchQuery).get();
} catch (IOException e) {
e.printStackTrace();
}
return document;
}
@Override
protected void onPostExecute(Document document) {
if (document != null) {
callback.onSearchResultReceived(document);
} else {
callback.onSearchFailed();
}
}
public interface SearchCallback {
void onSearchResultReceived(Document document);
void onSearchFailed();
}
}
public class MainActivity extends AppCompatActivity implements SearchTask.SearchCallback {
private TextView searchResultTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
searchResultTextView = findViewById(R.id.search_result_text);
// 在按钮点击事件或其他触发条件下执行搜索
searchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String searchQuery = "your search query";
new SearchTask(MainActivity.this).execute(searchQuery);
}
});
}
@Override
public void onSearchResultReceived(Document document) {
// 在这里处理搜索结果
Elements searchResults = document.select("your selector");
for (Element searchResult : searchResults) {
String resultText = searchResult.text();
// 处理搜索结果的文本
searchResultTextView.setText(resultText);
}
}
@Override
public void onSearchFailed() {
// 处理搜索失败的情况
}
}
请注意,上面的代码示例中的https://example.com/search?q=
是一个示例URL,您需要将其替换为您实际要搜索的URL。另外,请使用您自己的选择器来选择并处理搜索结果中的文本。