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" />

来源：http://blog.csdn.net/qq_39493777/article/details/78467719