How to receive website url from other apps, such as Google

Question

I'm a new developer. Can someone help me on how to receive website URLs from other apps? My app is currently my default browser, but my problem is that, I don't know how to receive the website URL.

Here's the preview of the app.

Intent intent = getIntent();
    String action = intent.getAction();
    String type = intent.getType();

    if (Intent.ACTION_SEND.equals(action) && type != null) {
        if ("text/plain".equals(type)) {
            String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
                if (sharedText != null) {
                    // Update UI to reflect text being shared
                    webview1.loadUrl(action);
                }
            }
        }

I try to use the code above but it doesn't work.

Also, I don't know how to detect when a user clicks the 'done' or 'go' button in the edittext on the status bar above (see the pic).

I tried this code, but my app keeps closing:

edittext.setOnEditorActionListener(new OnEditorActionListener() {
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_DONE)) {
           //do what you want on the press of 'done'
           submit.performClick();
        }    
        return false;
    }
});

Please help me.

Edit: I already added an intent filter:

    <activity
        android:name=".ReceiveUrlActivity"
        android:configChanges="orientation|keyboardHidden"
        android:label="@string/app_name"
        android:windowSoftInputMode="stateHidden" >
        <intent-filter android:autoVerify="true">
            <action android:name="android.intent.action.VIEW" />

            <category android:name="android.intent.category.BROWSABLE" />

            <category android:name="android.intent.category.LAUNCHER" /> 

            <category android:name="android.intent.category.DEFAULT" />

            <data android:scheme="http"/> 

            <data android:scheme="https"/>

        </intent-filter>

    </activity>