justificationMode 和 LinkMovementMethod 使文本被截断

Question

我想实现对齐文本并添加到

TextView

的链接（显示更多），因此我将

justificationMode

与

movementMethod

一起使用。

justificationMode

工作良好，但设置后

movementMethod

，我的 TextView 每行上的最后一个字符被剪切。

val textView = findViewById<TextView>(R.id.myTextView)
textView.text = "Lorem ipsum dolor sit amet, consectetuabc adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
textView.justificationMode = JUSTIFICATION_MODE_INTER_WORD
textView.movementMethod = LinkMovementMethod()

xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/myTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginHorizontal="16dp"
        android:layout_marginTop="10dp"
        android:textSize="20sp" />

</LinearLayout>

Answer 1

8 个月后，这个问题仍然存在，我刚刚在 SDK 31 上遇到了它。

android:autoLink="all"

解决方法对我不起作用，而且对我的应用程序也不满意。这是我的解决方法；它并不完美，但它为我解决了问题，我认为这里有足够的内容来解决OP的问题，同时为其他人提供指导：

1。将 OnTouchListener 添加到 TextView

// A lot of this code was lifted from LinkMovementMethod.onTouchEvent
binding.tv.setOnTouchListener { tv, event ->
        require(tv is TextView)
        val action = event.action
        if (action == MotionEvent.ACTION_UP) {
            val x = event.x.toInt() - tv.totalPaddingLeft + tv.scrollX
            val y = event.y.toInt() - tv.totalPaddingTop + tv.scrollY
            val line = tv.layout.getLineForVertical(y)
            val offset = tv.layout.getOffsetForHorizontal(line, x.toFloat())
            val spannable = tv.text as SpannedString // Risky business
            val links: Array<ClickableSpan> = spannable.getSpans(offset, offset, ClickableSpan::class.java)
            if (links.isNotEmpty()) {
                logger.debug("x=${event.x}; y=${event.y}")
                links.first().onClick(tv)
            }
        }
        true
    }

2。将 ClickableSpan 添加到 TextView

val builder = SpannableStringBuilder()
builder.setSpan(object : ClickableSpan() {
    // You can cache data here using closure
    val textOrUrl = "Clicked!"
    override fun onClick(widget: View) {
        // Do stuff
        Toast.makeText(widget.context, textOrUrl, Toast.LENGTH_SHORT).show()
    }

    // optional override if you don't want your links formatted
    override fun updateDrawState(ds: TextPaint) = Unit
}, beginIndex, endIndex, 0)
// Add builder to TextView 
binding.tv.text = builder

Answer 2

与@not43s相同的答案，但用Java编写：

    binding.termsTextView.setOnTouchListener((v, event) -> {
        if(v instanceof TextView){
            TextView tv = (TextView) v;
            if(event.getAction() == MotionEvent.ACTION_UP){
                int x = (int) (event.getX() - tv.getTotalPaddingLeft() + tv.getScrollX());
                int y = (int) (event.getY() - tv.getTotalPaddingTop() + tv.getScrollY());
                int line = tv.getLayout().getLineForVertical(y);
                int offset = tv.getLayout().getOffsetForHorizontal(line, x);
                if(tv.getText()instanceof Spanned) {
                    Spanned spannable = (Spanned) tv.getText();
                    ClickableSpan[] links =spannable.getSpans(offset, offset, ClickableSpan.class);
                    if (links.length>0) {
                        links[0].onClick(tv);
                    }
                }
            }
        }
        return true;
    });


    SpannableStringBuilder builder = new SpannableStringBuilder(gdrpMessage);
    setClickableSpan(builder,termsOfService,termsLink);
    setClickableSpan(builder,privacyPolicy,privacyLink);
    // Add builder to TextView
    binding.termsTextView.setText(builder);

和上面使用的setClickableSpan()：

void setClickableSpan(SpannableStringBuilder builder, String clickableString, String link){
    String originalString = builder.toString();
    int startIdx = originalString.indexOf(clickableString);
    int endIdx = startIdx + clickableString.length();
    builder.setSpan(new ClickableSpan() {
        @Override
        public void onClick(@NonNull View widget) {
            Toast.makeText(PremiumActivity.this, link, Toast.LENGTH_SHORT).show();
        }
    },startIdx,endIdx,0);
}

Answer 3

我遇到了同样的问题，我找到的解决方案是在我的 Textview 上使用

android:autoLink="all"

标签，而不是使用 LinkMovementMethod...

Answer 4

这是我的解决方案，它没有任何问题：

public class CustomLinkMovementMethod extends LinkMovementMethod {
private static CustomLinkMovementMethod instance;
public static MovementMethod getInstance() {
    if (instance == null) {
        instance = new CustomLinkMovementMethod();
    }
    return instance;
}

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
    int action = event.getAction();

    if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) {
        int x = (int) event.getX();
        int y = (int) event.getY();
        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();
        x += widget.getScrollX();
        y += widget.getScrollY();
        Layout layout = widget.getLayout();
        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);
        ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);
        if (link.length != 0) {
            if (action == MotionEvent.ACTION_UP) {
                link[0].onClick(widget);
            }
            return true;
        }
    }
    return Touch.onTouchEvent(widget, buffer, event);
}

}