handle textview link click in my android app

Question

I\'m currently rendering HTML input in a TextView like so:

tv.setText(Html.fromHtml(\"test\"));

The HTML b

Answer 1

Coming at this almost a year later, there's a different manner in which I solved my particular problem. Since I wanted the link to be handled by my own app, there is a solution that is a bit simpler.

Besides the default intent filter, I simply let my target activity listen to ACTION_VIEW intents, and specifically, those with the scheme 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>

This means that links starting with com.package.name:// will be handled by my activity.

So all I have to do is construct a URL that contains the information I want to convey:

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

In my target activity, I can retrieve this address:

Uri data = getIntent().getData();

In my example, I could simply check data for null values, because when ever it isn't null, I'll know it was invoked by means of such a link. From there, I extract the instructions I need from the url to be able to display the appropriate data.

Answer 2

its very simple add this line to your code:

tv.setMovementMethod(LinkMovementMethod.getInstance());

Answer 3

I changed the TextView's color to blue by using for example:

android:textColor="#3399FF"

in the xml file. How to make it underlined is explained here.

Then use its onClick property to specify a method (I'm guessing you could call setOnClickListener(this) as another way), e.g.:

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

In that method, I can do whatever I want as normal, such as launch an intent. Note that you still have to do the normal myTextView.setMovementMethod(LinkMovementMethod.getInstance()); thing, like in your acitivity's onCreate() method.

Answer 4

Example: Suppose you have set some text in textview and you want to provide a link on a particular text expression: "Click on #facebook will take you to facebook.com"

In layout xml:

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

In Activity:

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);

Also create one tag provider as:

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;
    }

}

In manifest file make as entry for provider and test activity as:

<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>

Now when you click on #facebook, it will invoke testactivtiy. And in test activity you can get the data as:

Uri uri = getIntent().getData();

Answer 5

if there are multiple links in the text view . For example textview has "https://" and "tel no" we can customise the LinkMovement method and handle clicks for words based on a pattern. Attached is the customised Link Movement Method.

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;
}

This should be called from the textview in the following manner:

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

Answer 6

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());
}