Android opens its own APP (scheme) through the web page, androidscheme

Android opens its own APP (scheme) through the web page, androidscheme

You can access a webpage through a browser (built-in or third-party) on your mobile phone. You can click a link to start your application and transmit data.

First, add a filter to the Activity to be started in the Mainifest file.

<activity            android:name="com.example.helloworld.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-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:scheme="znn"/>            </intent-filter>        </activity>

Receive data in MainActivity:

public class MainActivity extends Activity implements View.OnClickListener{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Intent intent = getIntent();String scheme = intent.getScheme();Uri uri = intent.getData();System.out.println("scheme:"+scheme);if (uri != null) {String host = uri.getHost();String dataString = intent.getDataString();String id = uri.getQueryParameter("id");String path = uri.getPath();String path1 = uri.getEncodedPath();String queryString = uri.getQuery();System.out.println("host:"+host);System.out.println("dataString:"+dataString);System.out.println("id:"+id);System.out.println("path:"+path);System.out.println("path1:"+path1);System.out.println("queryString:"+queryString);}}}

Write a simple webpage:

<a href="znn://aa.bb:80/test?p=12&d=1">test</a>

Test URL: www.erdian.net/m.html

Test results:

Scheme: znn
Host: aa. bb
DataString: znn: // aa. bb: 80/test? P = 12 & id = 1
Id: 1
Path:/test
Path1:/test

QueryString: p = 12 & d = 1

Http://www.erdian.net /? P = 238

Android Application Development: the first time an app is opened, it is a login page. After login, the page is directly displayed on the home page. How to Design the page relationship of the app?

1. You can use SharedPreferences to record the login status...
2. You can use the same Activity on the home page and login page, but use different layout files, such as main. xml and login. xml.
3. When the first Activity is started, in the onCreate method, first obtain the login status in SharedPreference. Assume that it is a Boolean isLogin.
If (isLogin) {setContenView (R. layout. main );.........} else {setContenView (R. layout. login );.........} welcome to question ~ Hope to adopt ~


Create an APP on the Android mobile phone and open the URLs between companies in the form of a browser. Ask what controls are used in the navigation bar below?

You can use View to write one, and then add the buttons one by one on it!