如何使用 OKHTTP 取消请求
我需要能够使用OKHTTP管理一些请求,使用通过键入地址来接收一些预测。问题是每次我插入CHAR时,它都会发出新的请求,但同时我需要取消前一个请求!例如:纽约市 = 同时 13 个请求!因此,我正在使用一个实例,尝试取消已请求但未成功的任何内容。这就是我所做的!Google Places AutoComplete
Call
Address.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
if(Address.getText().toString().length() > 3){
_Address = Address.getText().toString();
if(call != null){
call.cancel();
}
Request request = new Request.Builder()
.url(getPlaceAutoCompleteUrl(_Address))
.addHeader("content-type", "application/json")
.addHeader("User-Agent", "Mozilla/5.0 (Linux; U; Android 4.0.3; en-us; google_sdk Build/MR1) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30")
.build();
call = client.newCall(request);
call.enqueue(new Callback() {
public void onResponse(Call call, final Response response) throws IOException {
final String result = response.body().string();
runOnUiThread(new Runnable() {
@Override
public void run() {
Log.d("Response",result);
PlacePredictions place = null;
try {
place = LoganSquare.parse(result,PlacePredictions.class);
} catch (IOException e) {
e.printStackTrace();
}
if(autoCompleteAdapter == null){
autoCompleteAdapter = new AutoCompleteAdapter(CustomPlaces.this);
recyclerView.setAdapter(autoCompleteAdapter);
autoCompleteAdapter.Add(place.getPlaces());
}else {
autoCompleteAdapter.Clear();
autoCompleteAdapter.Add(place.getPlaces());
autoCompleteAdapter.notifyDataSetChanged();
}
}
});
}
public void onFailure(Call call, IOException e) {
//fail();
}
});
}else {
if(autoCompleteAdapter != null){
autoCompleteAdapter.Clear();
}
}
}
我检查对象是否为空并取消请求,但仍然不断出现!call