处理文本视图链接点击我的 Android 应用程序

小开

最佳答案

差不多一年之后，我用一种不同的方式解决了我的特殊问题。因为我想让我自己的应用程序来处理这个链接，所以有一个更简单的解决方案。

除了默认的意图过滤器之外，我只是让我的目标活动监听 ACTION_VIEW意图，特别是那些具有方案 com.package.name的意图

<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.intent.action.VIEW" />
<data android:scheme="com.package.name" />
</intent-filter>

这意味着从 com.package.name://开始的链接将由我的活动处理。

因此，我所要做的就是构建一个包含我想要传达的信息的 URL:

com.package.name://action-to-perform/id-that-might-be-needed/

在我的目标活动中，我可以检索到这个地址:

Uri data = getIntent().getData();

在我的示例中，我可以简单地检查 data是否为 null 值，因为当它不为 null 时，我将知道它是通过这样的链接调用的。从那里，我从 URL 中提取出我需要的指令，以便能够显示适当的数据。

小开

将这一行添加到代码中非常简单:

tv.setMovementMethod(LinkMovementMethod.getInstance());

小开

我通过使用以下例子将 TextView 的颜色更改为蓝色:

android:textColor="#3399FF"

在 xml 文件中。如何使它下划线解释了给你。

然后使用它的 onClick 属性指定一个方法(我猜你可以用另一种方式调用 setOnClickListener(this)) ，例如:

myTextView.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
doSomething();
}
});

在这种方法中，我可以像平常一样做任何我想做的事情，比如启动一个意图。请注意，您仍然必须执行常规的 myTextView.setMovementMethod(LinkMovementMethod.getInstance());操作，比如您的活动的 onCreate ()方法。

小开

另一种方式是从 Linkify 借鉴一点，但是允许你自定义你的操作。

自定义跨度类:

public class ClickSpan extends ClickableSpan {


private OnClickListener mListener;


public ClickSpan(OnClickListener listener) {
mListener = listener;
}


@Override
public void onClick(View widget) {
if (mListener != null) mListener.onClick();
}


public interface OnClickListener {
void onClick();
}
}

辅助功能:

public static void clickify(TextView view, final String clickableText,
final ClickSpan.OnClickListener listener) {


CharSequence text = view.getText();
String string = text.toString();
ClickSpan span = new ClickSpan(listener);


int start = string.indexOf(clickableText);
int end = start + clickableText.length();
if (start == -1) return;


if (text instanceof Spannable) {
((Spannable)text).setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
} else {
SpannableString s = SpannableString.valueOf(text);
s.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
view.setText(s);
}


MovementMethod m = view.getMovementMethod();
if ((m == null) || !(m instanceof LinkMovementMethod)) {
view.setMovementMethod(LinkMovementMethod.getInstance());
}
}

用法:

 clickify(textView, clickText,new ClickSpan.OnClickListener()
{
@Override
public void onClick() {
// do something
}
});

小开

如果文本视图中有多个链接。例如 textview 有“ https://”和“ tel no”，我们可以定制 LinkMovement 方法并根据模式处理单词的点击。附件是自定义的链接移动方法。

public class CustomLinkMovementMethod extends LinkMovementMethod
{


private static Context movementContext;


private static CustomLinkMovementMethod linkMovementMethod = new CustomLinkMovementMethod();


public boolean onTouchEvent(android.widget.TextView widget, android.text.Spannable buffer, android.view.MotionEvent event)
{
int action = event.getAction();


if (action == MotionEvent.ACTION_UP)
{
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 (link.length != 0)
{
String url = link[0].getURL();
if (url.startsWith("https"))
{
Log.d("Link", url);
Toast.makeText(movementContext, "Link was clicked", Toast.LENGTH_LONG).show();
} else if (url.startsWith("tel"))
{
Log.d("Link", url);
Toast.makeText(movementContext, "Tel was clicked", Toast.LENGTH_LONG).show();
} else if (url.startsWith("mailto"))
{
Log.d("Link", url);
Toast.makeText(movementContext, "Mail link was clicked", Toast.LENGTH_LONG).show();
}
return true;
}
}


return super.onTouchEvent(widget, buffer, event);
}


public static android.text.method.MovementMethod getInstance(Context c)
{
movementContext = c;
return linkMovementMethod;
}

应从文本视图中以下列方式调用:

textViewObject.setMovementMethod(CustomLinkMovementMethod.getInstance(context));

小开

这里有一个更通用的解决方案基于@Arun 的答案

public abstract class TextViewLinkHandler extends LinkMovementMethod {


public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
if (event.getAction() != MotionEvent.ACTION_UP)
return super.onTouchEvent(widget, buffer, event);


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 (link.length != 0) {
onLinkClick(link[0].getURL());
}
return true;
}


abstract public void onLinkClick(String url);
}

要使用它，只需实现 TextViewLinkHandler类的 onLinkClick。例如:

    textView.setMovementMethod(new TextViewLinkHandler() {
@Override
public void onLinkClick(String url) {
Toast.makeText(textView.getContext(), url, Toast.LENGTH_SHORT).show();
}
});

小开

这个答案延伸了 Jonathan S 的出色解决方案:

您可以使用以下方法从文本中提取链接:

private static ArrayList<String> getLinksFromText(String text) {
ArrayList links = new ArrayList();


String regex = "\(?\b((http|https)://www[.])[-A-Za-z0-9+&@#/%?=~_()|!:,.;]*[-A-Za-z0-9+&@#/%=~_()|]";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(text);
while (m.find()) {
String urlStr = m.group();
if (urlStr.startsWith("(") && urlStr.endsWith(")")) {
urlStr = urlStr.substring(1, urlStr.length() - 1);
}
links.add(urlStr);
}
return links;
}

这可用于删除 clickify()方法中的一个参数:

public static void clickify(TextView view,
final ClickSpan.OnClickListener listener) {


CharSequence text = view.getText();
String string = text.toString();




ArrayList<String> linksInText = getLinksFromText(string);
if (linksInText.isEmpty()){
return;
}




String clickableText = linksInText.get(0);
ClickSpan span = new ClickSpan(listener,clickableText);


int start = string.indexOf(clickableText);
int end = start + clickableText.length();
if (start == -1) return;


if (text instanceof Spannable) {
((Spannable) text).setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
} else {
SpannableString s = SpannableString.valueOf(text);
s.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
view.setText(s);
}


MovementMethod m = view.getMovementMethod();
if ((m == null) || !(m instanceof LinkMovementMethod)) {
view.setMovementMethod(LinkMovementMethod.getInstance());
}
}

对 ClickSpan 的一些修改:

public static class ClickSpan extends ClickableSpan {


private String mClickableText;
private OnClickListener mListener;


public ClickSpan(OnClickListener listener, String clickableText) {
mListener = listener;
mClickableText = clickableText;
}


@Override
public void onClick(View widget) {
if (mListener != null) mListener.onClick(mClickableText);
}


public interface OnClickListener {
void onClick(String clickableText);
}
}

现在你可以简单地在 TextView 上设置文本，然后添加一个监听器:

TextViewUtils.clickify(textWithLink,new TextUtils.ClickSpan.OnClickListener(){


@Override
public void onClick(String clickableText){
//action...
}


});

小开

只是使用我创建的库来共享一个替代解决方案:

TextView locNotFound = Textoo
.config((TextView) findViewById(R.id.view_location_disabled))
.addLinksHandler(new LinksHandler() {
@Override
public boolean onClick(View view, String url) {
if ("internal://settings/location".equals(url)) {
Intent locSettings = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(locSettings);
return true;
} else {
return false;
}
}
})
.apply();

或使用动态 HTML 源码:

String htmlSource = "Links: <a href='http://www.google.com'>Google</a>";
Spanned linksLoggingText = Textoo
.config(htmlSource)
.parseHtml()
.addLinksHandler(new LinksHandler() {
@Override
public boolean onClick(View view, String url) {
Log.i("MyActivity", "Linking to google...");
return false; // event not handled.  Continue default processing i.e. link to google
}
})
.apply();
textView.setText(linksLoggingText);

小开

解决方案

我已经实现了一个小类，在它的帮助下，您可以处理 TextView 本身的长时间点击和轻击 TextView 中的链接。

布局

TextView android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="all"/>

Java

import android.content.Context;
import android.text.Layout;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.Patterns;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.widget.TextView;


public class TextViewClickMovement extends LinkMovementMethod {


private final String TAG = TextViewClickMovement.class.getSimpleName();


private final OnTextViewClickMovementListener mListener;
private final GestureDetector                 mGestureDetector;
private TextView                              mWidget;
private Spannable                             mBuffer;


public enum LinkType {


/** Indicates that phone link was clicked */
PHONE,


/** Identifies that URL was clicked */
WEB_URL,


/** Identifies that Email Address was clicked */
EMAIL_ADDRESS,


/** Indicates that none of above mentioned were clicked */
NONE
}


/**
* Interface used to handle Long clicks on the {@link TextView} and taps
* on the phone, web, mail links inside of {@link TextView}.
*/
public interface OnTextViewClickMovementListener {


/**
* This method will be invoked when user press and hold
* finger on the {@link TextView}
*
* @param linkText Text which contains link on which user presses.
* @param linkType Type of the link can be one of {@link LinkType} enumeration
*/
void onLinkClicked(final String linkText, final LinkType linkType);


/**
*
* @param text Whole text of {@link TextView}
*/
void onLongClick(final String text);
}




public TextViewClickMovement(final OnTextViewClickMovementListener listener, final Context context) {
mListener        = listener;
mGestureDetector = new GestureDetector(context, new SimpleOnGestureListener());
}


@Override
public boolean onTouchEvent(final TextView widget, final Spannable buffer, final MotionEvent event) {


mWidget = widget;
mBuffer = buffer;
mGestureDetector.onTouchEvent(event);


return false;
}


/**
* Detects various gestures and events.
* Notify users when a particular motion event has occurred.
*/
class SimpleOnGestureListener extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onDown(MotionEvent event) {
// Notified when a tap occurs.
return true;
}


@Override
public void onLongPress(MotionEvent e) {
// Notified when a long press occurs.
final String text = mBuffer.toString();


if (mListener != null) {
Log.d(TAG, "----> Long Click Occurs on TextView with ID: " + mWidget.getId() + "\n" +
"Text: " + text + "\n<----");


mListener.onLongClick(text);
}
}


@Override
public boolean onSingleTapConfirmed(MotionEvent event) {
// Notified when tap occurs.
final String linkText = getLinkText(mWidget, mBuffer, event);


LinkType linkType = LinkType.NONE;


if (Patterns.PHONE.matcher(linkText).matches()) {
linkType = LinkType.PHONE;
}
else if (Patterns.WEB_URL.matcher(linkText).matches()) {
linkType = LinkType.WEB_URL;
}
else if (Patterns.EMAIL_ADDRESS.matcher(linkText).matches()) {
linkType = LinkType.EMAIL_ADDRESS;
}


if (mListener != null) {
Log.d(TAG, "----> Tap Occurs on TextView with ID: " + mWidget.getId() + "\n" +
"Link Text: " + linkText + "\n" +
"Link Type: " + linkType + "\n<----");


mListener.onLinkClicked(linkText, linkType);
}


return false;
}


private String getLinkText(final TextView widget, final Spannable buffer, final MotionEvent event) {


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) {
return buffer.subSequence(buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0])).toString();
}


return "";
}
}
}

用法

TextView tv = (TextView) v.findViewById(R.id.textview);
tv.setText(Html.fromHtml("<a href='test'>test</a>"));
textView.setMovementMethod(new TextViewClickMovement(this, context));

连结

希望这有帮助! 您可以找到代码给你。

小开

示例: 假设您已经在 textview 中设置了一些文本，并且希望为特定的文本表达式提供一个链接: “点击 # facebook就可以进入 facebook.com”

在布局 xml 中:

<TextView
android:id="@+id/testtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

活动内容:

String text  =  "Click on #facebook will take you to facebook.com";
tv.setText(text);
Pattern tagMatcher = Pattern.compile("[#]+[A-Za-z0-9-_]+\\b");
String newActivityURL = "content://ankit.testactivity/";
Linkify.addLinks(tv, tagMatcher, newActivityURL);

还要创建一个标记提供程序，如下所示:

public class TagProvider extends ContentProvider {


@Override
public int delete(Uri arg0, String arg1, String[] arg2) {
// TODO Auto-generated method stub
return 0;
}


@Override
public String getType(Uri arg0) {
return "vnd.android.cursor.item/vnd.cc.tag";
}


@Override
public Uri insert(Uri arg0, ContentValues arg1) {
// TODO Auto-generated method stub
return null;
}


@Override
public boolean onCreate() {
// TODO Auto-generated method stub
return false;
}


@Override
public Cursor query(Uri arg0, String[] arg1, String arg2, String[] arg3,
String arg4) {
// TODO Auto-generated method stub
return null;
}


@Override
public int update(Uri arg0, ContentValues arg1, String arg2, String[] arg3) {
// TODO Auto-generated method stub
return 0;
}


}

在清单文件中，作为提供程序和测试活动的条目如下:

<provider
android:name="ankit.TagProvider"
android:authorities="ankit.testactivity" />


<activity android:name=".TestActivity"
android:label = "@string/app_name">
<intent-filter >
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.cc.tag" />
</intent-filter>
</activity>

现在，当你点击 # facebook，它会调用 testactivity，在 test activity 中你可以得到如下数据:

Uri uri = getIntent().getData();

小开

谁能在这里找到更多的选择，只有一个

// Set text within a `TextView`
TextView textView = (TextView) findViewById(R.id.textView);
textView.setText("Hey @sarah, where did @jim go? #lost");
// Style clickable spans based on pattern
new PatternEditableBuilder().
addPattern(Pattern.compile("\\@(\\w+)"), Color.BLUE,
new PatternEditableBuilder.SpannableClickedListener() {
@Override
public void onSpanClicked(String text) {
Toast.makeText(MainActivity.this, "Clicked username: " + text,
Toast.LENGTH_SHORT).show();
}
}).into(textView);

资源: < a href = “ https://guide es.CodePath.com/android/Working-with-the-TextView”rel = “ nofollow norefrer”> CodePath

小开

public static void setTextViewFromHtmlWithLinkClickable(TextView textView, String text) {
Spanned result;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
result = Html.fromHtml(text, Html.FROM_HTML_MODE_LEGACY);
} else {
result = Html.fromHtml(text);
}
textView.setText(result);
textView.setMovementMethod(LinkMovementMethod.getInstance());
}

小开

Kotlin 版本:@user5699130回答:

布局

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="all"/>

截获的链接运动方法

import android.text.Spannable
import android.text.method.LinkMovementMethod
import android.text.style.ClickableSpan
import android.view.GestureDetector
import android.view.MotionEvent
import android.widget.TextView


/**
* Usage:
* fooTextView.movementMethod = InterceptedLinkMovementMethod(this)
* Where 'this' implements [TextViewLinkClickListener]
*/
class InterceptedLinkMovementMethod(
private val listener: TextViewLinkClickListener,
) : LinkMovementMethod() {


private lateinit var textView: TextView
private lateinit var spannable: Spannable
private val gestureDetector: GestureDetector by lazy {
GestureDetector(textView.context, SimpleTapListener())
}


override fun onTouchEvent(widget: TextView, buffer: Spannable, event: MotionEvent): Boolean {
textView = widget
spannable = buffer
gestureDetector.onTouchEvent(event)
return false
}


inner class SimpleTapListener : GestureDetector.SimpleOnGestureListener() {


override fun onDown(event: MotionEvent): Boolean = true


override fun onSingleTapConfirmed(event: MotionEvent): Boolean {
val linkText = getLinkText(textView, spannable, event)
val linkType = LinkTypes.getLinkTypeFromText(linkText)
if (linkType != LinkTypes.NONE) {
listener.onLinkClicked(linkText, linkType)
}
return false
}


override fun onLongPress(e: MotionEvent) {
val linkText = getLinkText(textView, spannable, e)
val linkType = LinkTypes.getLinkTypeFromText(linkText)
if (linkType != LinkTypes.NONE) {
listener.onLinkLongClicked(linkText, linkType)
}
}


private fun getLinkText(widget: TextView, buffer: Spannable, event: MotionEvent): String {
var x = event.x.toInt()
var y = event.y.toInt()
x -= widget.totalPaddingLeft
y -= widget.totalPaddingTop
x += widget.scrollX
y += widget.scrollY
val layout = widget.layout
val line = layout.getLineForVertical(y)
val off = layout.getOffsetForHorizontal(line, x.toFloat())
val link = buffer.getSpans(off, off, ClickableSpan::class.java)
if (link.isEmpty()) return ""
return buffer.subSequence(buffer.getSpanStart(link[0]), buffer.getSpanEnd(link[0]))
.toString()
}
}
}

链接类型

import android.util.Patterns


enum class LinkTypes {
PHONE,
WEB_URL,
EMAIL_ADDRESS,
NONE;


companion object {
fun getLinkTypeFromText(text: String): LinkTypes =
when {
Patterns.PHONE.matcher(text).matches() -> PHONE
Patterns.WEB_URL.matcher(text).matches() -> WEB_URL
Patterns.EMAIL_ADDRESS.matcher(text).matches() -> EMAIL_ADDRESS
else -> NONE
}
}
}

TextViewLinkClickListener

interface TextViewLinkClickListener {
fun onLinkClicked(linkText: String, linkTypes: LinkTypes)


fun onLinkLongClicked(linkText: String, linkTypes: LinkTypes)
}