Android广播类似QT中的信号和槽~~~
创新互联是一家专注网站建设、网络营销策划、成都小程序开发、电子商务建设、网络推广、移动互联开发、研究、服务为一体的技术型公司。公司成立十载以来，已经为成百上千家成都边坡防护网各业的企业公司提供互联网服务。现在，服务的成百上千家客户与我们一路同行，见证我们的成长；未来，我们一起分享成功的喜悦。
发送方只负责发送广播，不关心接收方是否接收到了信号，也不关心接收方如何处理信号。
界面文件activity_main.xml
MainActivity.java
public class MainActivity extends Activity {
public static final String ACTION_1 = "send1~~~";
public static final String ACTION_2 = "send2~~~~~~";
private BroadcastReceiver receiver;
private TextView textView = null;
private Button button1 = null;
private Button button2 = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.textView1);
textView.setText("");
button1 = (Button) findViewById(R.id.send1);
button2 = (Button) findViewById(R.id.send2);
initView();
receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
String data = intent.getExtras().getString("data");
if (action.equals(ACTION_1)) {
textView.setText("");
textView.setText("接收到：\n" + ACTION_1 + "\n1内容是：" + data);
} else if (action.equals(ACTION_2)) {
textView.setText("");
textView.setText("接收到：\n" + ACTION_2 + "\n2内容是：" + data);
}
}
};
IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_1);
filter.addAction(ACTION_2);
registerReceiver(receiver, filter);
}
public void initView() {
OnClickListener onClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
int id = v.getId();
switch (id) {
case R.id.send1:
Intent intent1 = new Intent(ACTION_1);
intent1.putExtra("data", "action_01");
sendBroadcast(intent1);
break;
case R.id.send2:
Intent intent2 = new Intent(ACTION_2);
intent2.putExtra("data", "action_02");
sendBroadcast(intent2);
break;
default:
break;
}
}
};
button1.setOnClickListener(onClickListener);
button2.setOnClickListener(onClickListener);
}
@Override
protected void onStop() {
super.onStop();
unregisterReceiver(receiver);//解除注册
}
}下面的例子是Mars视频中的例子
自定义接收器TestRecevier.java
public class TestRecevier extends BroadcastReceiver{
public TestRecevier() {
System.out.println("调用TestRecevier构造函数");
}
@Override
public void onReceive(Context context, Intent intent) {
System.out.println("onReceive");
}
}在AndroidManifest.xml文件中注册接收器
