我有文本“Android是一个软件堆栈”。在这个文本中,我想设置“堆栈”文本为可点击。所以,如果你点击它,它将重定向到一个新的活动(不在浏览器中)。
我试过了,但没有找到解决办法。
我有文本“Android是一个软件堆栈”。在这个文本中,我想设置“堆栈”文本为可点击。所以,如果你点击它,它将重定向到一个新的活动(不在浏览器中)。
我试过了,但没有找到解决办法。
当前回答
android.text.style.ClickableSpan可以解决你的问题。
SpannableString ss = new SpannableString("Android is a Software stack");
ClickableSpan clickableSpan = new ClickableSpan() {
@Override
public void onClick(View textView) {
startActivity(new Intent(MyActivity.this, NextActivity.class));
}
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
ds.setUnderlineText(false);
}
};
ss.setSpan(clickableSpan, 22, 27, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
TextView textView = (TextView) findViewById(R.id.hello);
textView.setText(ss);
textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setHighlightColor(Color.TRANSPARENT);
在XML:
<TextView
...
android:textColorLink="@drawable/your_selector"
/>
其他回答
t= (TextView) findViewById(R.id.PP1);
t.setText(Html.fromHtml("<bThis is normal text </b>" +
"<a href=\"http://www.xyz-zyyx.com\">This is cliclable text</a> "));
t.setMovementMethod(LinkMovementMethod.getInstance());
你可以像本文中描述的那样使用ClickableSpan
示例代码:
TextView myTextView = new TextView(this);
String myString = "Some text [clickable]";
int i1 = myString.indexOf("[");
int i2 = myString.indexOf("]");
myTextView.setMovementMethod(LinkMovementMethod.getInstance());
myTextView.setText(myString, BufferType.SPANNABLE);
Spannable mySpannable = (Spannable)myTextView.getText();
ClickableSpan myClickableSpan = new ClickableSpan() {
@Override
public void onClick(View widget) { /* do something */ }
};
mySpannable.setSpan(myClickableSpan, i1, i2 + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
参考
这是我的MovementMethod,用于检测链接/文本/图像点击。它被修改为LinkMovementMethod。
import android.text.Layout;
import android.text.NoCopySpan;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.ScrollingMovementMethod;
import android.text.style.ClickableSpan;
import android.text.style.ImageSpan;
import android.text.style.URLSpan;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
public class ClickMovementMethod extends ScrollingMovementMethod {
private Object FROM_BELOW = new NoCopySpan.Concrete();
private static final int CLICK = 1;
private static final int UP = 2;
private static final int DOWN = 3;
private Listener listener;
public void setListener(Listener listener) {
this.listener = listener;
}
@Override
public boolean canSelectArbitrarily() {
return true;
}
@Override
protected boolean handleMovementKey(TextView widget, Spannable buffer, int keyCode,
int movementMetaState, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_ENTER:
if (KeyEvent.metaStateHasNoModifiers(movementMetaState)) {
if (event.getAction() == KeyEvent.ACTION_DOWN &&
event.getRepeatCount() == 0 && action(CLICK, widget, buffer)) {
return true;
}
}
break;
}
return super.handleMovementKey(widget, buffer, keyCode, movementMetaState, event);
}
@Override
protected boolean up(TextView widget, Spannable buffer) {
if (action(UP, widget, buffer)) {
return true;
}
return super.up(widget, buffer);
}
@Override
protected boolean down(TextView widget, Spannable buffer) {
if (action(DOWN, widget, buffer)) {
return true;
}
return super.down(widget, buffer);
}
@Override
protected boolean left(TextView widget, Spannable buffer) {
if (action(UP, widget, buffer)) {
return true;
}
return super.left(widget, buffer);
}
@Override
protected boolean right(TextView widget, Spannable buffer) {
if (action(DOWN, widget, buffer)) {
return true;
}
return super.right(widget, buffer);
}
private boolean action(int what, TextView widget, Spannable buffer) {
Layout layout = widget.getLayout();
int padding = widget.getTotalPaddingTop() +
widget.getTotalPaddingBottom();
int areatop = widget.getScrollY();
int areabot = areatop + widget.getHeight() - padding;
int linetop = layout.getLineForVertical(areatop);
int linebot = layout.getLineForVertical(areabot);
int first = layout.getLineStart(linetop);
int last = layout.getLineEnd(linebot);
ClickableSpan[] candidates = buffer.getSpans(first, last, URLSpan.class);
int a = Selection.getSelectionStart(buffer);
int b = Selection.getSelectionEnd(buffer);
int selStart = Math.min(a, b);
int selEnd = Math.max(a, b);
if (selStart < 0) {
if (buffer.getSpanStart(FROM_BELOW) >= 0) {
selStart = selEnd = buffer.length();
}
}
if (selStart > last)
selStart = selEnd = Integer.MAX_VALUE;
if (selEnd < first)
selStart = selEnd = -1;
switch (what) {
case CLICK:
if (selStart == selEnd) {
return false;
}
if (listener != null) {
URLSpan[] link = buffer.getSpans(selStart, selEnd, URLSpan.class);
if (link.length >= 1) {
listener.onClick(link[0].getURL());
} else {
ImageSpan[] image = buffer.getSpans(selStart, selEnd, ImageSpan.class);
if (image.length >= 1) {
listener.onImageClicked(image[0].getSource());
} else {
listener.onTextClicked();
}
}
}
break;
case UP:
int beststart, bestend;
beststart = -1;
bestend = -1;
for (int i = 0; i < candidates.length; i++) {
int end = buffer.getSpanEnd(candidates[i]);
if (end < selEnd || selStart == selEnd) {
if (end > bestend) {
beststart = buffer.getSpanStart(candidates[i]);
bestend = end;
}
}
}
if (beststart >= 0) {
Selection.setSelection(buffer, bestend, beststart);
return true;
}
break;
case DOWN:
beststart = Integer.MAX_VALUE;
bestend = Integer.MAX_VALUE;
for (int i = 0; i < candidates.length; i++) {
int start = buffer.getSpanStart(candidates[i]);
if (start > selStart || selStart == selEnd) {
if (start < beststart) {
beststart = start;
bestend = buffer.getSpanEnd(candidates[i]);
}
}
}
if (bestend < Integer.MAX_VALUE) {
Selection.setSelection(buffer, beststart, bestend);
return true;
}
break;
}
return false;
}
@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);
URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
if (action == MotionEvent.ACTION_UP) {
if (listener != null) {
if (link.length >= 1) {
listener.onClick(link[0].getURL());
} else {
ImageSpan[] image = buffer.getSpans(off, off, ImageSpan.class);
if (image.length >= 1) {
listener.onImageClicked(image[0].getSource());
} else if (Selection.getSelectionStart(buffer) == Selection.getSelectionEnd(buffer)) {
listener.onTextClicked();
}
}
}
}
if (action == MotionEvent.ACTION_DOWN && link.length != 0) {
Selection.setSelection(buffer,
buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0]));
return true;
}
if (link.length == 0) {
Selection.removeSelection(buffer);
}
}
return super.onTouchEvent(widget, buffer, event);
}
@Override
public void initialize(TextView widget, Spannable text) {
Selection.removeSelection(text);
text.removeSpan(FROM_BELOW);
}
@Override
public void onTakeFocus(TextView view, Spannable text, int dir) {
Selection.removeSelection(text);
if ((dir & View.FOCUS_BACKWARD) != 0) {
text.setSpan(FROM_BELOW, 0, 0, Spannable.SPAN_POINT_POINT);
} else {
text.removeSpan(FROM_BELOW);
}
}
public interface Listener {
void onClick(String clicked);
void onTextClicked();
void onImageClicked(String source);
}
}
提供的解决方案相当不错。然而,我通常使用更简单的解决方案。
这是一个linkify效用函数
/**
* Method is used to Linkify words in a TextView
*
* @param textView TextView who's text you want to change
* @param textToLink The text to turn into a link
* @param url The url you want to send the user to
*/
fun linkify(textView: TextView, textToLink: String, url: String) {
val pattern = Pattern.compile(textToLink)
Linkify.addLinks(textView, pattern, url, { _, _, _ -> true })
{ _, _ -> "" }
}
使用这个函数非常简单。这里有一个例子
// terms and privacy
val tvTerms = findViewById<TextView>(R.id.tv_terms)
val tvPrivacy = findViewById<TextView>(R.id.tv_privacy)
Utils.linkify(tvTerms, resources.getString(R.string.terms),
Constants.TERMS_URL)
Utils.linkify(tvPrivacy, resources.getString(R.string.privacy),
Constants.PRIVACY_URL)
您可以使用示例代码。您希望了解关于ClickableSpan的详细信息。请检查这份文件
SpannableString myString = new SpannableString("This is example");
ClickableSpan clickableSpan = new ClickableSpan() {
@Override
public void onClick(View textView) {
ToastUtil.show(getContext(),"Clicked Smile ");
}
};
//For Click
myString.setSpan(clickableSpan,startIndex,lastIndex,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
//For UnderLine
myString.setSpan(new UnderlineSpan(),startIndex,lastIndex,0);
//For Bold
myString.setSpan(new StyleSpan(Typeface.BOLD),startIndex,lastIndex,0);
//Finally you can set to textView.
TextView textView = (TextView) findViewById(R.id.txtSpan);
textView.setText(myString);
textView.setMovementMethod(LinkMovementMethod.getInstance());