Android实现EventBus登录界面与传值（粘性事件）

本文实例为大家分享了android实现eventbus登录界面与传值的具体代码，供大家参考，具体内容如下

展示效果

添加eventbus导入依赖

compile 'org.greenrobot:eventbus:3.0.0'

主mainactivity方法

public class mainactivity extends appcompatactivity {
 private edittext username,password;
 private button btn_go;
 private list<userevent> mdata;
 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);
 mdata=new arraylist<userevent>();
 username=(edittext)findviewbyid(r.id.username);
 password=(edittext)findviewbyid(r.id.passwork);
 btn_go=(button)findviewbyid(r.id.btn_go);
 btn_go.settext("登录");
 btn_go.setonclicklistener(new view.onclicklistener() {
  @override
  public void onclick(view view) {
  string name = username.gettext().tostring().trim();
  string pass = password.gettext().tostring().trim();
  eventbus.getdefault().poststicky(new userevent(name,pass));
  startactivity(new intent(mainactivity.this,mainbctivity.class));
  }
 });
 }
}

主mainbctivity方法

public class mainbctivity extends appcompatactivity {
 private button btn_shou;
 private textview tv_b;
 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main_bctivity);
 btn_shou=(button)findviewbyid(r.id.btn_shou);
 btn_shou.settext("接受参数");
 btn_shou.setonclicklistener(new view.onclicklistener() {
  @override
  public void onclick(view view) {
  if(!eventbus.getdefault().isregistered(mainbctivity.this)){
   eventbus.getdefault().register(mainbctivity.this);
  }else{
   toast.maketext(mainbctivity.this, "请勿重复注册事件", toast.length_short).show();
  }
  }
 });
 tv_b=(textview)findviewbyid(r.id.tv_b);
 tv_b.settext("账号多少呢！");

 }

 @override
 protected void ondestroy() {
 super.ondestroy();
 eventbus.getdefault().unregister(mainbctivity.this);
 }
 @subscribe(threadmode = threadmode.posting,sticky = true)
 public void onmoonevent(userevent userevent){
 tv_b.settext("账号："+userevent.getusername()+"密码："+userevent.getpasswork());
 }
}

userevent（事件类）

public class userevent {
 private string username;
 private string passwork;

 public userevent(string username, string passwork) {
 this.username = username;
 this.passwork = passwork;
 }

 public string getusername() {
 return username;
 }

 public void setusername(string username) {
 this.username = username;
 }

 public string getpasswork() {
 return passwork;
 }

 public void setpasswork(string passwork) {
 this.passwork = passwork;
 }

 public userevent() {
 }

 @override
 public string tostring() {
 return "userevent{" +
  "username='" + username + '\'' +
  ", passwork='" + passwork + '\'' +
  '}';
 }
}

activity_main（mainactivity的布局）

<relativelayout
 android:layout_width="match_parent"
 android:layout_height="match_parent">
 <imageview
  android:id="@+id/hh_img"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:src="@mipmap/logo"
  android:layout_centerhorizontal="true"
  android:layout_margintop="40dp"
  />
 <edittext
  android:id="@+id/username"
  android:layout_below="@id/hh_img"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_margintop="10dp"
  android:hint="用户名"
  />
 <edittext
  android:id="@+id/passwork"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_below="@id/username"
  android:layout_margintop="10dp"
  android:hint="密码"
  />
 <button
  android:id="@+id/btn_go"
  android:layout_below="@id/passwork"
  android:layout_margintop="10dp"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  />
 <textview
  android:id="@+id/new_user"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_below="@id/btn_go"
  android:text="新用户"
  android:layout_margintop="5px"
  />
 </relativelayout>

activity_main_bctivity（mainbctivity的布局）

<button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignparenttop="true"
 android:layout_centerhorizontal="true"
 android:layout_margintop="20dp"
 android:id="@+id/btn_shou" />

 <textview
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_below="@+id/btn_shou"
 android:layout_centerhorizontal="true"
 android:layout_margintop="32dp"
 android:id="@+id/tv_b" />

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。