android 线程通信 android, 通信

520503

activity_main.xml
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="16dp"
android:text="通信" />


MainActivity.java

public class MainActivity extends Activity implements OnClickListener{
Handler mainHanler,subHandler;
Button btn1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
mainHanler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
if(msg.what == 1){
System.out.println(msg.obj.toString());
}
}
};
new WorkThread().start();
}
public void initViews(){
btn1 = (Button) findViewById(R.id.button1);
btn1.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
//交互
Message msg = Message.obtain();
msg.what = 1;
msg.obj = "儿子,哥来看你啦!";
subHandler.sendMessage(msg);
break;
}
}
public class WorkThread extends Thread{
@Override
public void run() {
Looper.prepare();
subHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
if(msg.what == 1){
//接受消息
System.out.println(msg.obj.toString());
}
//发消息给主线程
Message m = Message.obtain();
m.what = 1;
m.obj = "老爸我来啦!";
mainHanler.sendMessage(m);
}
};
Looper.loop();
}
}
}