EventBus粘性事件、点击跳转登录传值
展示效果
添加EventBus导入依赖
1 |
compile
'org.greenrobot:eventbus:3.0.0' |
主MainActivity方法
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
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）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
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）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
<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）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
<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" />
|