在下面的CancelAll和Stop之后的代码中,之后添加到队列中的请求将在start命令之后立即执行。
如何删除队列中插入的最后一个请求?
final RequestQueue queue = Volley.newRequestQueue(this);
String url ="";
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d("response", response);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d("VolleyError", error.toString());
}
});
// Add the request to the RequestQueue.
stringRequest.setTag("a");
queue.cancelAll("a");
queue.stop();
queue.add(stringRequest);
queue.start();
答案 0 :(得分:1)
queue
引用是一个局部变量,因此您需要将其移到外部,并且由于您正在活动中使用它,因此请像
private RequestQueue queue;
..oncreate(..){
//... code
queue = Volley.newRequestQueue(this);
}
并创建一个单独的方法以取消所有请求为
void cancelAllQueuedRequests(){
queue.cancelAll("a");
queue.stop();
queue.start();
}
随时随地致电cancelAllQueuedRequests
并添加这样的请求
String url ="some url";
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d("response", response);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d("VolleyError", error.toString());
cancelAllQueuedRequests();
}
});
// Add the request to the RequestQueue.
stringRequest.setTag("a");
queue.add(stringRequest);
//queue.start(); no need