要使用Markwon在Android中高亮关键字,可以使用Markwon的SpanFactory功能。以下是一个示例:

首先,导入Markwon:

implementation 'io.noties.markwon:markwon:4.6.2'

然后,在布局文件中添加一个TextView:

<TextView
    android:id="@+id/textView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="This is a sample text to highlight keywords"
    />

接下来,在Activity或Fragment中使用以下代码:

import io.noties.markwon.Markwon;
import io.noties.markwon.SpanFactory;
import io.noties.markwon.SpannableBuilder;
import io.noties.markwon.ext.highlight.HighlightPlugin;

public class MainActivity extends AppCompatActivity {

    private static final String KEYWORD = "highlight";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView textView = findViewById(R.id.textView);

        // Create a SpanFactory to highlight the keyword
        SpanFactory spanFactory = (configuration, props) -> {
            if (props != null && props.containsKey("highlight")) {
                return new BackgroundColorSpan(Color.YELLOW);
            }
            return null;
        };

        // Create a Markwon instance with HighlightPlugin and our SpanFactory
        Markwon markwon = Markwon.builder(this)
                .usePlugin(HighlightPlugin.create())
                .usePlugin(new AbstractMarkwonPlugin() {
                    @Override
                    public void configure(@NonNull Registry registry) {
                        registry.addSpanFactory(spanFactory);
                    }
                })
                .build();

        // Use Markwon to render the text with the keyword highlighted
        SpannableBuilder spannableBuilder = SpannableBuilder.create("This is a sample text to highlight keywords");
        int index = spannableBuilder.toString().indexOf(KEYWORD);
        if (index >= 0) {
            spannableBuilder.setSpan(new Object(), index, index + KEYWORD.length(), Spanned.SPAN_MARK_MARK);
            spannableBuilder.setProp("highlight", true, index, index + KEYWORD.length());
            spannableBuilder.setSpan(Spanned.SPAN_EXCLUSIVE_EXCLUSIVE, index, index + KEYWORD.length());
        }
        markwon.setMarkdown(textView, spannableBuilder);
    }
}

这将使用自定义SpanFactory在文本中高亮关键字。在上面的示例中,我们使用BackgroundColorSpan来设置高亮颜色,但您可以使用任何其他Span来自定义高亮效果。

android使用markwon使关键字高亮

原文地址: http://www.cveoy.top/t/topic/bBQH 著作权归作者所有。请勿转载和采集!

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