如何在不同的单词上单击或点击TextView文本？

Question

如何通过单击带有两个不同单词的文本视图来移动到另一个视图.这是我正在使用的字符串.

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我想用不同的颜色和可点击的这两个词(使用条款,隐私政策).

我知道要为特定单词制作颜色.我想让它可点击.

Answer 1

我终于弄明白了如何在TextView中拥有多个可点击的部分.重要的是他们都拥有自己的ClickableSpan!这是我第一次测试时出错的地方.如果它们具有相同的ClickableSpan实例,则仅记住最后设置的跨度.

我创建了一个String,其中包含所需的可点击区域,其中包含"["和"]".

String sentence = "this is [part 1] and [here another] and [another one]";

这里是设置TextView,setMovementMehthod也是必需的:

textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setText(addClickablePart(sentence), BufferType.SPANNABLE);

我创建了这个函数,它将处理可点击区域的创建:

private SpannableStringBuilder addClickablePart(String str) {
    SpannableStringBuilder ssb = new SpannableStringBuilder(str);

    int idx1 = str.indexOf("[");
    int idx2 = 0;
    while (idx1 != -1) {
        idx2 = str.indexOf("]", idx1) + 1;

        final String clickString = str.substring(idx1, idx2);
        ssb.setSpan(new ClickableSpan() {

            @Override
            public void onClick(View widget) {
                Toast.makeText(getView().getContext(), clickString,
                        Toast.LENGTH_SHORT).show();
            }
        }, idx1, idx2, 0);
        idx1 = str.indexOf("[", idx2);
    }

    return ssb;
}

Answer 2

基于Boy的回答(感谢您的回复对我有很多帮助),这是我实现它的另一种方式,没有这个'['和']'字符使用内部类来描述可点击的单词:

import java.util.List;

import android.content.Context;
import android.text.SpannableStringBuilder;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.AttributeSet;
import android.widget.TextView;

/**
 * Defines a TextView widget where user can click on different words to see different actions
 *
 */
public class ClickableTextView extends TextView {

    public ClickableTextView(Context context) {
        super(context);
    }

    public ClickableTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ClickableTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public void setTextWithClickableWords(String text, List<ClickableWord> clickableWords) {
        setMovementMethod(LinkMovementMethod.getInstance());
        setText(addClickablePart(text, clickableWords), BufferType.SPANNABLE);
    }

    private SpannableStringBuilder addClickablePart(String str, List<ClickableWord> clickableWords) {
        SpannableStringBuilder ssb = new SpannableStringBuilder(str);

        for (ClickableWord clickableWord : clickableWords) {
            int idx1 = str.indexOf(clickableWord.getWord());
            int idx2 = 0;
            while (idx1 != -1) {
                idx2 = idx1 + clickableWord.getWord().length();
                ssb.setSpan(clickableWord.getClickableSpan(), idx1, idx2, 0);
                idx1 = str.indexOf(clickableWord.getWord(), idx2);
            }
        }

        return ssb;
    }

    public static class ClickableWord {
        private String word;
        private ClickableSpan clickableSpan;

        public ClickableWord(String word, ClickableSpan clickableSpan) {
            this.word = word;
            this.clickableSpan = clickableSpan;
        }

        /**
         * @return the word
         */
        public String getWord() {
            return word;
        }

        /**
         * @return the clickableSpan
         */
        public ClickableSpan getClickableSpan() {
            return clickableSpan;
        }
    }
}

希望这可以帮助某人

编辑:如何更改链接颜色和删除下划线:

像这样创建和使用您自己的ClickableSpan实现:

//a version of ClickableSpan without the underline
public static class NoUnderlineClickableSpan extends ClickableSpan {
    private int color = -1;

    public void setColor(int color) {
        this.color = color;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        ds.setUnderlineText(false);
        if (this.color != -1) {
            ds.setColor(this.color);
        }
    }
}

Answer 3

在TextView中使用带有链接的HTML要比创建多个TextView要简单得多,要注意布局,听众等.

在您的活动或片段中:

    TextView mText = (TextView) findViewById(R.id.text_linkified);
    mText.setText(Html.fromHtml("Open <a href='myapp://my-activity'>My Activity</a> or" +
            " <a href='myapp://other-activity'>Other Activity</a>"));
    mText.setMovementMethod(LinkMovementMethod.getInstance());

在清单中

    <activity android:name=".MyActivity">
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT"/>
            <data android:scheme="myapp" android:host="my-activity"/>
        </intent-filter>
    </activity>
    <activity android:name=".MyOtherActivity">
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT"/>
            <data android:scheme="myapp" android:host="other-activity" />
        </intent-filter>
    </activity>