我目前正在TextView中呈现HTML输入,如下所示:
tv.setText(Html.fromHtml("<a href='test'>test</a>"));
正在显示的HTML是通过外部资源提供给我的,所以我无法改变现状,但我当然可以对HTML进行一些正则篡改,更改href值,比如说别的什么。
我想要的是能够直接从应用程序中处理链接点击,而不是让链接打开浏览器窗口。这可以实现吗?我猜测可以将href-value的协议设置为类似“myApp://”的东西,然后注册一些可以让我的应用程序处理该协议的东西。如果这确实是最好的方式,我想知道这是怎么做的,但我希望有一个更简单的方法来说,“当在这个文本视图中点击链接时,我想提出一个接收的事件链接的href值作为输入参数“
答案 0 :(得分:177)
差不多一年后来到这里,我解决了我的特殊问题的方式有所不同。由于我希望链接由我自己的应用程序处理,因此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听取ACTION_VIEW
意图,特别是那些具有方案com.package.name
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.intent.action.VIEW" />
<data android:scheme="com.package.name" />
</intent-filter>
这意味着以com.package.name://
开头的链接将由我的活动处理。
所以我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,我可以检索此地址:
Uri data = getIntent().getData();
在我的示例中,我可以简单地检查data
是否为空值,因为当它不为空时,我会知道它是通过这样的链接调用的。从那里,我从url中提取我需要的指令,以便能够显示适当的数据。
答案 1 :(得分:62)
另一种方式,从Linkify借用一些,但允许您自定义处理。
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
}
});
答案 2 :(得分:52)
如果文本视图中有多个链接。例如,textview具有“https://”和“tel no”,我们可以自定义LinkMovement方法并根据模式处理单词的单击。附件是定制的链接移动方法。
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;
}
应该以下列方式从textview调用:
textViewObject.setMovementMethod(CustomLinkMovementMethod.getInstance(context));
答案 3 :(得分:36)
这是一个基于@Arun回答的更通用的解决方案
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onLinkClick
类的TextViewLinkHandler
。例如:
textView.setMovementMethod(new TextViewLinkHandler() {
@Override
public void onLinkClick(String url) {
Toast.makeText(textView.getContext(), url, Toast.LENGTH_SHORT).show();
}
});
答案 4 :(得分:10)
非常简单地将此行添加到您的代码中:
tv.setMovementMethod(LinkMovementMethod.getInstance());
答案 5 :(得分:5)
我已经实现了一个小类,借助它可以处理TextView本身的长按,并点击TextView中的链接。
TextView android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="all"/>
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 "";
}
}
}
TextView tv = (TextView) v.findViewById(R.id.textview);
tv.setText(Html.fromHtml("<a href='test'>test</a>"));
textView.setMovementMethod(new TextViewClickMovement(this, context));
希望这有帮助!您可以找到代码here。
答案 6 :(得分:3)
只是使用我创建的库共享替代解决方案。使用Textoo,可以实现:
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:
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);
答案 7 :(得分:2)
谁在这里寻找更多选项是一个
// 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: CodePath
答案 8 :(得分:2)
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());
}
答案 9 :(得分:1)
我使用例如:
将TextView的颜色更改为蓝色android:textColor="#3399FF"
xml文件中的。如何使其加下划线解释here。
然后使用其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();
}
});
在那种方法中,我可以像往常一样做任何我想要的事情,比如发动一个意图。请注意,您仍然必须执行正常的myTextView.setMovementMethod(LinkMovementMethod.getInstance());
操作,例如在您的acitivity的onCreate()方法中。
答案 10 :(得分:1)
我使用的最佳方式,它总是对我有用
android:autoLink="web"
答案 11 :(得分:1)
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());
}
}
ClickSpan的一些更改:
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);
}
}
现在您只需在TextView上设置文本,然后为其添加一个监听器:
TextViewUtils.clickify(textWithLink,new TextUtils.ClickSpan.OnClickListener(){
@Override
public void onClick(String clickableText){
//action...
}
});
答案 12 :(得分:0)
示例:假设您已在textview中设置了一些文本,并且希望提供特定文本表达式的链接: &#34;点击 #facebook 将带你到facebook.com&#34;
在布局xml中:
<TextView
android:id="@+id/testtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
活动:
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);
还创建一个标记提供者:
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,将提供者和测试活动的条目设为:
<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时,它会调用testactivtiy。在测试活动中,您可以获取数据:
Uri uri = getIntent().getData();