在android textview中捕获http链接点击事件

Question

我在 android textview 中有一个链接。我无法捕获链接点击事件。

String text = "http:://www.google.com is a google link";
textview.setText(text);

"http:://www.google.com" 这个范围的字符串在 textview 中是可点击的。我想捕捉那个特定的点击事件。

我尝试了以下方法。

public static void setTextView(TextView text, CharSequence sequence) {
    UoloLogger.i(TAG, "Setting string :: "+sequence);
    SpannableStringBuilder strBuilder = new SpannableStringBuilder(sequence);
    URLSpan[] urls = strBuilder.getSpans(0, sequence.length(), URLSpan.class);
    for(URLSpan span : urls) {
        makeLinkClickable(strBuilder, span);
    }
    text.setText(strBuilder);
    text.setMovementMethod(LinkMovementMethod.getInstance());
}

public static void makeLinkClickable(SpannableStringBuilder strBuilder, final URLSpan span) {
    int start = strBuilder.getSpanStart(span);
    int end = strBuilder.getSpanEnd(span);
    int flags = strBuilder.getSpanFlags(span);
    ClickableSpan clickable = new ClickableSpan() {
        public void onClick(View view) {
            UoloLogger.i(TAG, span.getURL());
        }
    };
    strBuilder.setSpan(clickable, start, end, flags);
    strBuilder.removeSpan(span);
}

我开始使用 setTextView() 方法将文本设置到我的文本视图中。即使我有链接，我也得到 URLSpan 数组是空的。

String text = "http:://www.google.com is a google link";
setTextView(textView, text);

抱歉英语不好。我想，我已经解释了我的问题。有人能帮我吗。

Answer 1

public static void setLinkclickEvent(TextView tv, HandleLinkClickInsideTextView clickInterface) {
    String text = tv.getText().toString();
    String str = "([Hh][tT][tT][pP][sS]?:\\/\\/[^ ,'\">\\]\\)]*[^\\. ,'\">\\]\\)])";
    Pattern pattern = Pattern.compile(str);
    Matcher matcher = pattern.matcher(tv.getText());
    while (matcher.find()) {
        int x = matcher.start();
        int y = matcher.end();
        final android.text.SpannableString f = new android.text.SpannableString(
                tv.getText());
        InternalURLSpan span = new InternalURLSpan();
        span.setText(text.substring(x, y));
        span.setClickInterface(clickInterface);
        f.setSpan(span, x, y,
                android.text.Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        tv.setText(f);
    }
    tv.setLinksClickable(true);
    tv.setMovementMethod(LinkMovementMethod.getInstance());
    tv.setFocusable(false);
}

public static class InternalURLSpan extends android.text.style.ClickableSpan {

    private String text;
    private HandleLinkClickInsideTextView clickInterface;

    @Override
    public void onClick(View widget) {
        getClickInterface().onLinkClicked(getText());
    }

    public void setText(String textString) {
        this.text = textString;
    }

    public String getText() {
        return this.text;
    }

    public void setClickInterface(HandleLinkClickInsideTextView clickInterface) {
        this.clickInterface = clickInterface;
    }

    public HandleLinkClickInsideTextView getClickInterface() {
        return this.clickInterface;
    }

}

public interface HandleLinkClickInsideTextView {
    public void onLinkClicked(String url);
}

在此之后我只是使用了发送点击事件的方法。

textview.setText("http://google.com is google website and http://youtube.com is youtube site");
setLinkclickEvent(textview, new HandleLinkClickInsideTextView() {
    public void onLinkClicked(String url) {
          // Here I added my code
    }
});

Answer 2

您可以使用 SpannableStringBuilder 实现相同的目的。

只需初始化要添加 2 个或更多侦听器的 TextView，然后将其传递给我创建的以下方法：

示例代码：

private void customTextView(TextView view) {
        SpannableStringBuilder spanTxt = new SpannableStringBuilder(
                "I agree to the ");
        spanTxt.append("Term of services");
        spanTxt.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View widget) {
                Toast.makeText(getApplicationContext(), "Terms of services Clicked",
                        Toast.LENGTH_SHORT).show();
            }
        }, spanTxt.length() - "Term of services".length(), spanTxt.length(), 0);
        spanTxt.append(" and");
        spanTxt.setSpan(new ForegroundColorSpan(Color.BLACK), 32, spanTxt.length(), 0);
        spanTxt.append(" Privacy Policy");
        spanTxt.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View widget) {
                Toast.makeText(getApplicationContext(), "Privacy Policy Clicked",
                        Toast.LENGTH_SHORT).show();
            }
        }, spanTxt.length() - " Privacy Policy".length(), spanTxt.length(), 0);
        view.setMovementMethod(LinkMovementMethod.getInstance());
        view.setText(spanTxt, BufferType.SPANNABLE);
    } 

在您的 XML 中，使用 android:textColorLink 添加您选择的自定义链接颜色。像这样：

  <TextView
     android:id="@+id/textView1"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:text="TextView"
     android:textColorLink="#C36241" /> 

Answer 3

如果要在textview点击后打开链接，有两种选择：

1. 使用java代码：

   Spanned text = Html.fromHtml("<u>GOOGLE.COM</u>");
   textView.setText(text);
   Uri uri = Uri.parse("http://shopwhere.com.au/");
   Intent webIntent = new Intent(Intent.ACTION_VIEW,uri);
   // Create and start the chooser
   Intent chooser = Intent.createChooser(webIntent, "Open with");
   startActivityForResult(chooser,0);
   

2. 使用 XML：

   在 textview 标签内使用android:autoLink="web"。您还可以更改链接颜色android:textColorHighlight="@android:color/transparent" 和android:textColorLink="@color/white"。