Android shuts down another activity in one activity
Last Update:2015-09-20
Source: Internet
Author: User
<span id="Label3"></p><p><p><span style="font-size: 15px;">For example, there are activitya, activityb, close Activitya in activityb.</span></p></p><p><p><span style="font-size: 15px;">Solution:</span></p></p><p><p><span style="font-size: 15px;">1. In activitya, set a static variable instance, initialized to this, in activityb, ActivityA.instance.finish ();</span></p></p><p><p><span style="font-size: 15px;">2. You can also use Activitymanager</span></p></p><span style="font-size: 15px;"><span style="font-size: 15px;">Activitymanager manager = (activitymanager) Getsystemservice (activity_service); </span></span><span style="font-size: 15px;"><span style="font-size: 15px;">manager.restartpackage (packagename)</span></span><p><p><span style="font-size: 15px;">Code:</span></p></p><p><p><span style="font-size: 15px;"><strong>Activitya:</strong></span></p></p><span style="font-size: 15px;">public <span style="font-size: 15px;">class Mainactivity extends Activity {</span></span><span style="font-size: 15px;">public <span style="font-size: 15px;"> <span style="color: #ff0000;">static Activitya instance = null;</span> </span></span><span style="font-size: 15px;"><span style="font-size: 15px;">@Override</span></span><span style="font-size: 15px;">public <span style="font-size: 15px;">void OnCreate (Bundle Savedinstancestate) {</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">super.oncreate (savedinstancestate);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">Setcontentview (r.layout.activitya);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;"> <span style="color: #ff0000;">instance = this;</span> </span></span><span style="font-size: 15px;"><span style="font-size: 15px;">Intent Intent = new Intent ();</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">intent.setclass (activitya.this, activityb.class);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">ActivityA.this.startActivity (intent);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;"> }</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">}</span></span><span style="font-size: 15px;"><span style="font-size: 15px;"> </span></span><span style="font-size: 15px;"><span style="font-size: 15px;"><strong>activityb:</strong></span></span><span style="font-size: 15px;">public <span style="font-size: 15px;">class Activityb extends Activity {</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">@Override</span></span><span style="font-size: 15px;">public <span style="font-size: 15px;">void OnCreate (Bundle Savedinstancestate) {</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">super.oncreate (savedinstancestate);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">Setcontentview (r.layout.activityb);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">}</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">//return Key</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">@Override</span></span><span style="font-size: 15px;">public <span style="font-size: 15px;">boolean onKeyDown (int keycode, keyevent event) {</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">if (keycode = = Keyevent.keycode_back) {//if It is a return key on the phone</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">ActivityB.this.finish ();</span></span><span style="color: #ff0000; font-size: 15px;"><span style="color: #ff0000; font-size: 15px;">ActivityA.instance.finish ();</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">}</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">return super.onkeydown (keycode, event);</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">}</span></span><span style="font-size: 15px;"><span style="font-size: 15px;">}</span></span><p><p>Android shuts down another activity in one activity</p></p></span>
