(To) summary of the basic usage of intent

1. No parameter for activity jump

Intent it = new intent (activity. Main. This, activity2.class );

Startactivity (it );

2. pass data to the next activity (use bundle and intent. putextras)

Intent it = new intent (activity. Main. This, activity2.class );

Bundle bundle = new bundle ();

Bundle. putstring ("name", "this is from mainactivity! ");

It. putextras (bundle); // it. putextra ("test", "shuju ");

Startactivity (it); // startactivityforresult (it, request_code );

You can use the following methods to obtain data:

Bundle bundle = getintent (). getextras ();

String name = bundle. getstring ("name ");

3. Return the result to the previous activity (use setresult to start the activity for startactivityforresult (it, request_code)

Intent intent = getintent ();

Bundle bundle2 = new bundle ();

Bundle2.putstring ("name", "this is from showmsg! ");

Intent. putextras (bundle2 );

Setresult (result_ OK, intent );

4. Call back the result processing function (onactivityresult) of the previous activity)

@ Override

Protected void onactivityresult (INT requestcode, int resultcode, intent data ){

// Todo auto-generated method stub

Super. onactivityresult (requestcode, resultcode, data );

If (requestcode = request_code ){

If (resultcode = result_canceled)

Settitle ("cancle ");

Else if (resultcode = result_ OK ){

String temp = NULL;

Bundle bundle = data. getextras ();

If (bundle! = NULL) temp = bundle. getstring ("name ");

Settitle (temp );

}

}

}

The following are some other intent usage examples (from javaeye)

Display webpage

1. Uri uri = URI. parse ("http://google.com ");

2. Intent it = new intent (intent. action_view, Uri );

3. startactivity (it );

Show Map

1. Uri uri = URI. parse ("Geo: 38.899533,-77.036476 ");

2. Intent it = new intent (intent. action_view, Uri );

3. startactivity (it );

4. // other GEO Uri? Example

5. // GEO: latitude, longpolling

6. // GEO: latitude, longpolling? Z = zoom

7. // GEO: 0, 0? Q = My + street + address

8. // GEO: 0, 0? Q = business + near + city

9. // Google. Streetview: cbll = Lat, LNG & white = 1, yaw, pitch, zoom & MZ = mapzoom

Route Planning

1. Uri uri = URI. parse ("http://maps.google.com/maps? F = D & saddr = startlat % 20 startlng & daddr = endlat % 20 endlng & HL = EN ");

2. Intent it = new intent (intent. action_view, Uri );

3. startactivity (it );

4. // Where startlat, startlng, endlat, endlng are a long with 6 decimals like: 50.123456

Call

1. // call the dialing program

2. Uri uri = URI. parse ("Tel: 0800000123 ");

3. Intent it = new intent (intent. action_dial, Uri );

4. startactivity (it );

1. // directly call

2. Uri uri = URI. parse ("Tel: 0800000123 ");

3. Intent it = new intent (intent. action_call, Uri );

4. startactivity (it );

5. // use ?, In androidmanifest. XML, add

6 .//

Send SMS/MMS

1. // call the SMS Program

2. Intent it = new intent (intent. action_view, Uri );

3. It. putextra ("sms_body", "the SMS text ");

4. It. settype ("Vnd. Android-DIR/MMS-SMS ");

5. startactivity (it );

1. // send messages

2. Uri uri = URI. parse ("smsto: // 0800000123 ");

3. Intent it = new intent (intent. action_sendto, Uri );

4. It. putextra ("sms_body", "the SMS text ");

5. startactivity (it );

1. // send MMS

2. Uri uri = URI. parse ("content: // media/external/images/Media/23 ");

3. Intent it = new intent (intent. action_send );

4. It. putextra ("sms_body", "some text ");

5. It. putextra (intent. extra_stream, Uri );

6. It. settype ("image/PNG ");

7. startactivity (it );

Send email

1. Uri uri = URI. parse ("mailto: [email protected]");

2. Intent it = new intent (intent. action_sendto, Uri );

3. startactivity (it );

1. Intent it = new intent (intent. action_send );

2. it. putextra (intent. extra_email, "[email protected]");

3. It. putextra (intent. extra_text, "the email body text ");

4. It. settype ("text/plain ");

5. startactivity (intent. createchooser (IT, "Choose email client "));

1. Intent it = new intent (intent. action_send );

2. String [] TOS = {"[email protected]"};

3. String [] CCS = {"[email protected]"};

4. It. putextra (intent. extra_email, TOS );

5. It. putextra (intent. extra_cc, CCS );

6. It. putextra (intent. extra_text, "the email body text ");

7. It. putextra (intent. extra_subject, "the email subject text ");

8. It. settype ("message/rfc822 ");

9. startactivity (intent. createchooser (IT, "Choose email client "));

1. // transfer the attachment

2. Intent it = new intent (intent. action_send );

3. It. putextra (intent. extra_subject, "the email subject text ");

4. It. putextra (intent. extra_stream, "file: // sdcard/mysong.mp3 ");

5. sendintent. settype ("audio/MP3 ");

6. startactivity (intent. createchooser (IT, "Choose email client "));

Play multimedia

Uri uri = URI. parse ("file: // sdcard/song.mp3 ");

Intent it = new intent (intent. action_view, Uri );

It. settype ("audio/MP3 ");

Startactivity (it );

Uri uri = URI. withappendedpath (mediastore. Audio. Media. internal_content_uri, "1 ");

Intent it = new intent (intent. action_view, Uri );

Startactivity (it );

Market Problems

1. // search for an application

2. Uri uri = URI. parse ("Market: // search? Q = pname: pkg_name ");

3. Intent it = new intent (intent. action_view, Uri );

4. startactivity (it );

5. // Where pkg_name is the full package path for an application

1. // display information about an application

2. Uri uri = URI. parse ("Market: // details? Id = app_id ");

3. Intent it = new intent (intent. action_view, Uri );

4. startactivity (it );

5. // Where app_id is the Application ID, find the ID

6. // by clicking on your application on market Home

7. // page, and notice the ID from the address bar

Uninstall Application

1. Uri uri = URI. fromparts ("package", strpackagename, null );

2. Intent it = new intent (intent. action_delete, Uri );

3. startactivity (it );

(To) summary of the basic usage of intent