Intent intended for data transfer between activity

Transferred from: http://blog.sina.com.cn/s/blog_83940dfb0100veas.html

data transfer between activity in the start activity, sending dataprotected voidonCreate (Bundle saveinstancestate) {Super. OnCreate (saveinstancestate);          Setcontentview (r.layout.thisactivity); Intent Intent=NewIntent (); //set the start activity and target activity to indicate that the data is transferred from this activity to the next activityIntent.setclass (thisactivity. This, Targetactivity.class); //binding DataIntent.putextra ("username", username);//You can also bind an arrayIntent.putextra ("Userpass", Userpass); //Open target Activitystartactivity (Intent); In the target activity, the data is received:protected voidonCreate (Bundle saveinstancestate) {Super. OnCreate (saveinstancestate);               Setcontentview (r.layout.targetactivity); //Get IntentIntent Intent =getintent (); //reading DataString name = Intent.getstringextra ("username"); String Pass= Intent.getstringextra ("Userpass");you can also apply bundles (bundles) in the start activity to send data:protected voidonCreate (Bundle saveinstancestate) {Super. OnCreate (saveinstancestate);               Setcontentview (r.layout.thisactivity); Intent Intent=NewIntent (); //set the start activity and target activity to indicate that the data is transferred from this activity to the next activityIntent.setclass (thisactivity. This, Targetactivity.class); //bind multiple data at onceBundle bundle =NewBundle (); Bundle.putstring ("Username", username); Bundle.putstring ("Userpass", Userpass);          Intent.putextras (bundle); //Open target Activitystartactivity (Intent); In the target activity, the data is received:protected voidonCreate (Bundle saveinstancestate) {Super. OnCreate (saveinstancestate);               Setcontentview (r.layout.targetactivity); //Get IntentIntent Intent =getintent (); //reading DataBundle bundle =Intent.getextras (); String name= Bundle.getstring ("username"); String Pass= Bundle.getstring ("Userpass"); When you need to return data from the target activity to the original activity, you can use the above method to define a new Intent to pass the data, or you can use Startactivityforresult (Intent Intent,intRequestcode); method. In the start activity, send the data:protected voidonCreate (Bundle saveinstancestate) {Super. OnCreate (saveinstancestate);               Setcontentview (r.layout.thisactivity); Intent Intent=NewIntent (); //set the start activity and target activity to indicate that the data is transferred from this activity to the next activityIntent.setclass (thisactivity. This, Targetactivity.class); //binding DataIntent.putextra ("username", username);//You can also bind an arrayIntent.putextra ("Userpass", Userpass); //Open target ActivityStartactivityforresult (intent,1); }      //you need to override the Onactivityresult method      protected voidOnactivityresult (intRequestcode,intResultCode, Intent Intent) {         Super. Onactivityresult (requestcode,resultcode,intent); //determine if the result code is the same as the result code of the callback         if(ResultCode = = 1){            //Get backhaul dataString name = Intent.getstringextra ("name"); String Pass= Intent.getstringextra ("Pass");//working with Data            ......         } In the target activity, receive the data:protected voidonCreate (Bundle saveinstancestate) {Super. OnCreate (saveinstancestate);               Setcontentview (r.layout.targetactivity); //Get IntentIntent Intent =getintent (); //reading DataString name = Intent.getstringextra ("username"); String Pass= Intent.getstringextra ("Userpass");//get new data from EditText to name and passName =Edittext1.gettext (). toString (); Pass=Edittext2.gettext (). toString ()//data changes, you need to pass the changed value back to the original activityIntent.putextra ("name", name); Intent.putextra ("Pass", pass); //setresult (int resultcode,intent Intent) methodSetresult (1, intent); //Destroying this activity will automatically return to the previous activity when the activity is destroyed.finish (); }

Here are some other examples of intent usages that are reproduced (go from Javaeye) to display Web pages1. Uri uri = uri.parse ("http://google.com"); 2. Intent it =NewIntent (Intent.action_view, URI); 3. StartActivity (it); Show Map1. Uri uri = uri.parse ("geo:38.899533,-77.036476"); 2. Intent it =NewIntent (Intent.action_view, URI); 3. StartActivity (IT); 4.//other geo URI examples5.//Geo:latitude,longitude6.//Geo:latitude,longitude?z=zoom7.//geo:0,0?q=my+street+address8.//geo:0,0?q=business+near+city9.//Google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapzoomPath Planning1. Uri uri = uri.parse ("Http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng &hl=en "); 2. Intent it =NewIntent (Intent.action_view, URI); 3. StartActivity (IT); 4.//where Startlat, STARTLNG, Endlat, ENDLNG is a long with 6 decimals like:50.123456Call1.//call out Dialer2. Uri uri = uri.parse ("tel:0800000123"); 3. Intent it =NewIntent (intent.action_dial, URI); 4. StartActivity (IT); 1.//just call out .2. Uri uri = uri.parse ("tel:0800000123"); 3. Intent it =NewIntent (Intent.action_call, URI); 4. StartActivity (IT); 5.//with this, to be in Androidmanifest.xml, plus6.//<uses-permission id= "Android.permission.CALL_PHONE"/>Transferring SMS/MMS1.//Call SMS Program2. Intent it =NewIntent (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 Message2. Uri uri = uri.parse ("smsto://0800000123"); 3. Intent it =NewIntent (Intent.action_sendto, URI); 4. It.putextra ("Sms_body", "The SMS Text")); 5. StartActivity (IT); 1.//Transfer MMS2. Uri uri = uri.parse ("CONTENT://MEDIA/EXTERNAL/IMAGES/MEDIA/23"); 3. Intent it =NewIntent (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 email1. Uri uri = uri.parse ("Mailto:[email protected]"); 2. Intent it =NewIntent (Intent.action_sendto, URI); 3. StartActivity (IT); 1. Intent it =NewIntent (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=NewIntent (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 Attachments2. Intent it =NewIntent (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=NewIntent (Intent.action_view, URI); It.settype ("Audio/mp3");        StartActivity (IT); Uri URI= Uri.withappendedpath (MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1"); Intent it=NewIntent (Intent.action_view, URI); StartActivity (IT); Market related1.//Find an app2. Uri uri = uri.parse ("Market://search?q=pname:pkg_name"); 3. Intent it =NewIntent (Intent.action_view, URI); 4.  StartActivity (IT); 5.//where Pkg_name is the full package path for an application1.//Show information about an app2. Uri uri = uri.parse ("market://details?id=app_id"); 3. Intent it =NewIntent (Intent.action_view, URI);4.  StartActivity (IT); 5.//where app_id is the application ID, find the ID6.//By clicking on your application in market home7.//page, and notice the ID from the address barUninstall Applications1. Uri uri = uri.fromparts ("package", Strpackagename,NULL); 2. Intent it =NewIntent (Intent.action_delete, URI); 3. StartActivity (it);

Intent intended for data transfer between activity