我已经开发了一个android
应用程序到rc汽车在wifi上。我已经使用了esp8266 nodemcu
wifi模块用于此目的。在我的应用程序。有4个按钮,分别是前进,后退,左右。我可以通过wifi连接这个模块,并为ex做一些基本的操作。前进,后退,右转,左转。下面是执行此操作的代码:如何在Android中同时处理两个按钮同时按下事件
@Override
public boolean onTouch(View v, MotionEvent event) {
String action;
if (v.getId() == moveForward.getId())
action = "/forward/";
else if (v.getId() == moveReverse.getId())
action = "/reverse/";
else if (v.getId() == moveRigth.getId())
action = "/right/";
else
action = "/left/";
String serverAddress = ipAddress.getText().toString() + ":" + "80" + action;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
HttpRequestTask requestTask = new HttpRequestTask(serverAddress);
requestTask.execute("1");
} else if (event.getAction() == MotionEvent.ACTION_UP) {
HttpRequestTask requestTask = new HttpRequestTask(serverAddress);
requestTask.execute("0");
}
return false;
}
private class HttpRequestTask extends AsyncTask<String, Void, String> {
private String serverAdress;
private String serverResponse = "";
public HttpRequestTask(String serverAdress) {
this.serverAdress = serverAdress;
}
@Override
protected String doInBackground(String... params) {
String val = params[0];
String url = "http://" + serverAdress + val;
Log.e("url", url);
try {
HttpClient client = new DefaultHttpClient();
HttpGet getRequest = new HttpGet();
getRequest.setURI(new URI(url));
HttpResponse response = client.execute(getRequest);
InputStream inputStream = null;
inputStream = response.getEntity().getContent();
BufferedReader bufferedReader =
new BufferedReader(new InputStreamReader(inputStream));
serverResponse = bufferedReader.readLine();
inputStream.close();
} catch (URISyntaxException e) {
e.printStackTrace();
serverResponse = e.getMessage();
} catch (ClientProtocolException e) {
e.printStackTrace();
serverResponse = e.getMessage();
} catch (IOException e) {
e.printStackTrace();
serverResponse = e.getMessage();
}
return serverResponse;
}
当用户按下向前也可以按右键或左键并车子前进,右转或反向移动,并在同一时间左转。但我不知道如何在代码中同时处理两个按钮按下的事件。你能告诉我一个方法吗?
没有你的屏幕支持多点触控? –
@OussemaAroua我不知道。如果是,如何处理? – user3059066
只需在您的内容布局中添加android:splitMotionEvents =“true” –