本文实例为大家分享了Android EventBus普通事件和粘性事件,供大家参考,具体内容如下
展示效果添加EventBus导入依赖compile org
本文实例为大家分享了Android EventBus普通事件和粘性事件,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 Button button_t,button_d; private TextView tv_a; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button_d=(Button)findViewById(R.id.button_d); button_d.setText("订阅"); button_t=(Button)findViewById(R.id.button_t); button_t.setText("跳转到Bctivity"); tv_a=(TextView)findViewById(R.id.tv_a); tv_a.setText("欢迎大家观看飞鸟96的博客"); button_t.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startActivity(new Intent(MainActivity.this,MainBctivity.class)); } }); /* * 订阅事件 * */ button_d.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(!EventBus.getDefault().isRegistered(MainActivity.this)) { EventBus.getDefault().register(MainActivity.this); }else{ Toast.makeText(MainActivity.this, "请勿重复注册事件", Toast.LENGTH_SHORT).show(); } } }); } @Override protected void onDestroy() { super.onDestroy(); /* * 取消注册事件 * */ EventBus.getDefault().unregister(MainActivity.this); } @Subscribe(threadMode = ThreadMode.MAIN) public void onMoonEvent(MessageEvent message){ tv_a.setText(message.getMessage()); } @Subscribe(sticky = true) public void onMoonEvents(MessageEvent message){ tv_a.setText(message.getMessage()); } }
主MainBctivity方法
public class MainBctivity extends AppCompatActivity { private Button button_f,button_n; private TextView tv_b; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_bctivity); button_f=(Button)findViewById(R.id.button_f); button_f.setText("发送事件"); button_n=(Button)findViewById(R.id.button_n); button_n.setText("粘性事件"); tv_b=(TextView)findViewById(R.id.tv_b); tv_b.setText("MainBctivity"); /*发送事件*/ button_f.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { EventBus.getDefault().post(new MessageEvent("飞鸟96博客祝你用的开心!")); finish(); } }); /*粘性事件*/ button_n.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { EventBus.getDefault().postSticky(new MessageEvent("开心开心开开心!!")); finish(); } }); } }
MessageEvent(事件类)
public class MessageEvent { private String message; public MessageEvent(String message) { this.message = message; } public MessageEvent() { } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } }
activity_main(MainActivity的布局)
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Hello World!" android:layout_centerInParent="true" android:id="@+id/tv_a" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="17dp" android:id="@+id/button_t" android:layout_below="@id/tv_a" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="17dp" android:id="@+id/button_d" android:layout_below="@id/button_t" />
activity_main_bctivity(MainBctivity的布局)
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Hello World!" android:layout_centerInParent="true" android:id="@+id/tv_b" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="17dp" android:id="@+id/button_f" android:layout_below="@id/tv_b" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="17dp" android:id="@+id/button_n" android:layout_below="@id/button_f" />
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好代码网。