Data exchange between Android two activity
Last Update:2015-10-11
Source: Internet
Author: User
<span id="Label3"></p><p><p>1. without data</p></p><pre><span style="color: #000000;"><span style="color: #000000;">@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate); Setcontentview (r.layout.activity_main); Next</span></span>=<span style="color: #000000;"><span style="color: #000000;">(Button) Findviewbyid (r.id.next); Next.setonclicklistener (</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Button.onclicklistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">OnClick (View arg0) {</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">TODO auto-generated Method Stub</span></span> <strong><strong>Intent intent=<span style="color: #0000ff;">new</span> <span style="color: #000000;"> Intent (); Intent.setclass (mainactivity.</span> <span style="color: #0000ff;"></span>this, Second. <span style="color: #0000ff;">class</span> </strong></strong><span style="color: #000000;"><span style="color: #000000;"><strong>); StartActivity (intent);</strong> } }); }</span></span></pre><p><p>2. Data from the first activity is passed to the second activity</p></p><p><p>Send Side</p></p><pre> <span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate); Setcontentview (r.layout.activity_main); Next</span></span>=<span style="color: #000000;"><span style="color: #000000;">(Button) Findviewbyid (r.id.next); Content</span></span>=<span style="color: #000000;"><span style="color: #000000;">(EditText) Findviewbyid (r.id.content); Next.setonclicklistener (</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Button.onclicklistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">OnClick (View arg0) {</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">TODO auto-generated Method Stub</span></span>String name=<span style="color: #000000;"><span style="color: #000000;">content.gettext (). toString (); <strong>Intent Intent</strong> </span></span><strong><strong>=<span style="color: #0000ff;">new</span> <span style="color: #000000;"> Intent (); Intent.putextra (</span>"name"<span style="color: #000000;">, name); </span> <span style="color: #008000;">//</span><span style="color: #008000;">toast.maketext (mainactivity.this, name, toast.length_short). show ();</span> Intent.setclass (mainactivity. <span style="color: #0000ff;"> </span>this, Second. <span style="color: #0000ff;">class</span> </strong></strong><span style="color: #000000;"><span style="color: #000000;"><strong>); StartActivity (intent); </strong> } }); }</span></span></pre><p><p>Receiving end</p></p><pre><span style="color: #000000;"><span style="color: #000000;">@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate); Setcontentview (r.layout.activity_second); Name</span></span>=<span style="color: #000000;"><span style="color: #000000;">(TextView) Findviewbyid (r.id.name); </span>age</span>=<span style="color: #000000;"><span style="color: #000000;">(EditText) Findviewbyid (r.id.age); </span>back</span>=<span style="color: #000000;"><span style="color: #000000;">(Button) Findviewbyid (r.id.back); <strong>Intent Intent</strong> </span></span><strong><strong>=<span style="color: #000000;">getintent (); String na</span>=intent.getstringextra ("name"<span style="color: #000000;">); </span> <span style="color: #008000;">//</span><span style="color: #008000;">toast.maketext (second.this, na, toast.length_short). show ();</span> </strong></strong><span style="color: #000000;"><span style="color: #000000;"> <strong>name.settext (na);</strong> }</span></span></pre><p><p>3. A second activity transmits data to the first activity</p></p><p><p>First activity</p></p><pre> <span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate); Setcontentview (r.layout.activity_main); Next</span></span>=<span style="color: #000000;"><span style="color: #000000;">(Button) Findviewbyid (r.id.next); Content</span></span>=<span style="color: #000000;"><span style="color: #000000;">(EditText) Findviewbyid (r.id.content); Next.setonclicklistener (</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Button.onclicklistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">OnClick (View arg0) {</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">TODO auto-generated Method Stub</span></span>String name=<span style="color: #000000;"><span style="color: #000000;">content.gettext (). toString (); <strong>Intent Intent</strong> </span></span><strong><strong>=<span style="color: #0000ff;">new</span> <span style="color: #000000;"> Intent (); Intent.putextra (</span>"name"<span style="color: #000000;">, name); </span> <span style="color: #008000;">//</span><span style="color: #008000;">toast.maketext (mainactivity.this, name, toast.length_short). show ();</span> Intent.setclass (mainactivity. <span style="color: #0000ff;"> </span>this, Second. <span style="color: #0000ff;">class</span> </strong></strong><span style="color: #000000;"><span style="color: #000000;"><strong>);</strong> <strong>Startactivityforresult (intent, result_code); </strong> } }); } @Override </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>Onactivityresult (<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>requestcode,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">resultcode, Intent Data) { </span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">TODO auto-generated Method Stub</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. Onactivityresult (requestcode, resultcode, data); </span></span><strong><strong> <span style="color: #0000ff;">if</span>(requestcode==<span style="color: #000000;">result_code) { </span> <span style="color: #0000ff;">if</span>(resultcode==<span style="color: #000000;">Second.result_code) { Bundle Bundle</span>=<span style="color: #000000;">Data.getextras (); String con</span>=bundle.getstring ("age"</strong></strong><span style="color: #000000;"><span style="color: #000000;"><strong>); Content.settext (con);</strong> } } }</span></span></pre><p><p>A second activity</p></p><pre><span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate); Setcontentview (r.layout.activity_second); Name</span></span>=<span style="color: #000000;"><span style="color: #000000;">(TextView) Findviewbyid (r.id.name); </span>age</span>=<span style="color: #000000;"><span style="color: #000000;">(EditText) Findviewbyid (r.id.age); </span>back</span>=<span style="color: #000000;"><span style="color: #000000;">(Button) Findviewbyid (r.id.back); Back.setonclicklistener (</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Button.onclicklistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">OnClick (View arg0) {</span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">TODO auto-generated Method Stub</span></span>String a=<span style="color: #000000;"><span style="color: #000000;">age.gettext (). toString (); <strong>Intent Intent</strong> </span></span><strong><strong>=<span style="color: #0000ff;">new</span> <span style="color: #000000;"> Intent (); Bundle Bundle</span>=<span style="color: #0000ff;">new</span> <span style="color: #000000;"> bundle (); Bundle.putstring (</span>"age"</strong></strong><span style="color: #000000;"><span style="color: #000000;"> <strong>, a); Intent.putextras (bundle); Setresult (result_code, intent); Finish ();</strong> } }); Intent Intent</span></span>=<span style="color: #000000;"><span style="color: #000000;">getintent (); String na</span></span>=intent.getstringextra ("name"<span style="color: #000000;"><span style="color: #000000;">); </span></span><span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">toast.maketext (second.this, na, toast.length_short). show ();</span></span><span style="color: #000000;"><span style="color: #000000;">Name.settext (na); }</span></span></pre><p><p></p></p><p><p> Data exchange between Android two activity </p> </p></span>
