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亿速云。