Parameter passing between activity of Android Development Foundation

First, simple numerical transfer

1, Mainactivity

protected void OnCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);        Setcontentview (r.layout.activity_main);        Findviewbyid (R.id.button1). Setonclicklistener (New View.onclicklistener () {            @Override public            void OnClick ( View v) {                //startactivity (new Intent (Intent.action_view, Uri.parse ("http://www.baidu.com"));                Intent i=new Intent (mainactivity.this,newactivity.class);                I.putextra ("Data", "I am the string to be passed");                StartActivity (i);}}        );    

2, Newactivity

Private TextView T;    @Override    protected void onCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);        Setcontentview (r.layout.activity_new);        Intent i=getintent ();        t= (TextView) Findviewbyid (r.id.textview1);        T.settext (I.getstringextra ("Data"));    }

Second, packet bundle transfer

1, Mainactivity

protected void OnCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);        Setcontentview (r.layout.activity_main);        Findviewbyid (R.id.button1). Setonclicklistener (New View.onclicklistener () {            @Override public            void OnClick ( View v) {                Intent i=new Intent (mainactivity.this,newactivity.class);                Bundle B=new Bundle ();                B.putstring ("name", "Zhang San");                B.putint ("Age", at a);                I.putextra ("Data", B);                StartActivity (i);}}        );    

2, Newactivity

Private TextView T;    @Override    protected void onCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);        Setcontentview (r.layout.activity_new);        Intent i=getintent ();        Bundle B=new Bundle ();        B=i.getbundleextra ("Data");        t= (TextView) Findviewbyid (r.id.textview1);        T.settext (String.Format ("name:%s", B.getstring ("name"));    }

Parameter passing between activity of Android Development Foundation