Launching an Android Application from the Browser

Launch Android App from WEB browser

Guess I got my own answer after some more research:

It only works in Google Chrome but does the job in my case:

Links should look like:

<a href="intent://invoice/#Intent;scheme=company;package=company.printapp;S.doctype=FRA;S.docno=FRA1234;S.browser_fallback_url=http%3A%2F%2Fgoogle.com;end">PRINT INVOICE</a>

In the AndroidManifest.xml the important part is:

...

package="company.printapp"
...

<!-- Allow web apps to launch My App -->
            <intent-filter>
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data android:scheme="company" android:host="invoice" android:path="/"/>
            </intent-filter>

And finally this is how I get the parameters I pass in the Intent link (doctype and docno):

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Bundle parametros = getIntent().getExtras();
        if (parametros != null){
            String Doctype = parametros.getString("doctype");
            String DocNo = parametros.getString("docno");
            TextView textView = (TextView) findViewById(R.id.DocNo);
            textView.setText(DocNo);
            BluetoothPrint(Doctype,DocNo);
        }
    }

How can I open a URL in Android's web browser from my application?

Try this:

Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"));
startActivity(browserIntent);

That works fine for me.

As for the missing "http://" I'd just do something like this:

if (!url.startsWith("http://") && !url.startsWith("https://"))
   url = "http://" + url;

I would also probably pre-populate your EditText that the user is typing a URL in with "http://".

Launch android application from a browser link

It took me 6 hours to figure out the problem. Somehow setting the exported to false caused all the problem: android:exported="false". When I set it to true, it worked like a charm.

Funny because I put it there in the first place to avoid the Exported activity does not require permission warning. Setting it back to true, brought back the warning, but it is working now.

Solution is below. Hope it will help others save time.

<activity
      android:name=".MainActivity"
      android:label="@string/title_activity_main" 
      android:exported="true">
      <intent-filter>
          <data  android:scheme="allplayer" />
          <action android:name="android.intent.action.VIEW" />
          <category android:name="android.intent.category.BROWSABLE" />
          <category android:name="android.intent.category.DEFAULT" />
      </intent-filter>
  </activity>

Launching an App from a URL

Thanks for your replies. In the end I had to change my intent to the below and it had the desired result. When I click the URL specified in my intent the application chooser pops up allowing me to load the link in my app.

Just as info for anyone struggling as I did, you do not need to read data from incoming intents for the application chooser to launch, all you need is the below in your AndroidManifest file.

<intent-filter android:autoVerify="true">
                    <action android:name="android.intent.action.VIEW" />
                    <category android:name="android.intent.category.DEFAULT" />
                    <category android:name="android.intent.category.BROWSABLE" />
                    <data   android:scheme="http" />
                    <data   android:scheme="https" />
                    <data android:host=".website.com" />
</intent-filter>

Thanks All.

Launching an Android Application from the Browser

You cannot use MAIN -- URLs in Android are only VIEWed from the browser or WebView.

Also, none of your Intent filters include the BROWSABLE category, so they will never work with the browser.

It is not recommended to invent your own schemes. You can use a regular HTTP scheme, for some domain that you control. This sample project demonstrates this. In particular, you can follow the pattern shown by this filter:

<intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:host="www.this-so-does-not-exist.com" android:scheme="http" />
</intent-filter>

replacing www.this-so-does-not-exist.com with something you own, and perhaps adding in a path to narrow the filter's scope. You can also see this technique used by the Barcode Scanner app from ZXing.

Unable to launch app from web browser

Typing a link in the browser doesn't start an intent: the browser just browses to that URL. The intent mechanism is only used when you follow (i.e. click) a link in the browser.

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