Sometimes, in android developement, we want to make our textview’s text clickable, that is, when user click a link in textview’s content, user would open an activity,here are the code examples:

in res/values/strings.xml, there is a string like this:

<string name="guide">
    <![CDATA[
    * You can click <a href="RegisterActivity://ra">here</a> to register
    ]]>
</string>

Here we want the user can click ‘here’ to open an activity named RegisterActivity

then, in AndroidManifest.xml add an intent filter to RegisterActivity:

<activity
        android:name=".RegisterActivity"
        android:label="@string/app_name">
    <intent-filter>
        <action android:name=".RegisterActivity"/>
        <category android:name="android.intent.category.DEFAULT"/>
    </intent-filter>
    <intent-filter>
        <category android:name="android.intent.category.DEFAULT" />
        <action android:name="android.intent.action.VIEW" />
        <data android:scheme="RegisterActivity" />
    </intent-filter>
</activity>

the most important part is the second intent-filter, which includes “android.intent.action.VIEW” action and the data settings. Here ,we set the schema to “RegisterActivity”,then in your strings.xml ,you just set the link as this:

<a href="RegisterActivity://ra">here</a>

the ra is the path of the url, you can pass some parameters to the activity.

in the layout, you have a textview like this:

<TextView
    android:id="@+id/tvGuide"
    style="@style/NormalText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
/>

at last, you change the code of the textview,add init code like this:

TextView tvGuideDesc = (TextView)this.findViewById(R.id.tvGuide);
if(tvGuideDesc!=null) {
    tvGuideDesc.setText(Html.fromHtml(String.format(
            this.getString(R.string.guide))));
    tvGuideDesc.setMovementMethod(LinkMovementMethod.getInstance()); //this line is important

}

The most import line of the upper code is:

tvGuideDesc.setMovementMethod(LinkMovementMethod.getInstance()); //this line is important

the LinkMovementMethod make your text link clickable.

Then , you can test it.

You can find detail android documents about the data intent-filter here: