在Edittext上使用setText的RxTextView.textChanges [英] RxTextView.textChanges with setText on Edittext
问题描述
RxTextView.textChanges(editText)
.map(CharSequence::toString)
.debounce(200, TimeUnit.MILLISECONDS)
.observeOn(AndroidSchedulers.mainThread())
.subscribe(input -> {
output = //...do something with input
editText.setText(ouput)
}));
当我 setText(输出)
它去了在循环中。要设置文本,我首先需要删除侦听器,然后再次设置侦听器。我怎么能用 RxJava 做这个?
When I setText(output)
it goes in loop. To set the text I first need to remove listener and then set listener again. How can I do this using RxJava?
推荐答案
当我
setText(输出)
它进入循环。要设置文本,我首先需要删除侦听器,然后再次设置侦听器。如何使用 RxJava 执行此操作?
When I
setText(output)
it goes in loop. To set the text I first need to remove listener and then set listener again. How can I do this using RxJava?
为了满足要求,我设法扩展 RxBinding 源代码如下。
To meet the requirement I managed to extend the RxBinding source code as follows.
EditableTextViewTextObservable.java
:
EditableTextViewTextObservable.java
:
public class EditableTextViewTextObservable extends InitialValueObservable<CharSequence> {
private final TextView view;
EditableTextViewTextObservable(TextView view) {
this.view = view;
}
@Override
protected void subscribeListener(Observer<? super CharSequence> observer) {
EditableTextViewTextObservable.Listener listener = new EditableTextViewTextObservable.Listener(view, observer);
observer.onSubscribe(listener);
view.addTextChangedListener(listener);
}
@Override protected CharSequence getInitialValue() {
return view.getText();
}
final static class Listener extends MainThreadDisposable implements TextWatcher {
private final TextView view;
private final Observer<? super CharSequence> observer;
Listener(TextView view, Observer<? super CharSequence> observer) {
this.view = view;
this.observer = observer;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (!isDisposed()) {
view.removeTextChangedListener(this);
observer.onNext(s);
view.addTextChangedListener(this);
}
}
@Override
protected void onDispose() {
view.removeTextChangedListener(this);
}
}
}
EditableRxTextView.java
:
EditableRxTextView.java
:
public final class EditableRxTextView {
@CheckResult
@NonNull
public static InitialValueObservable<CharSequence> textChanges(@NonNull TextView view) {
return new EditableTextViewTextObservable(view);
}
}
用法:
EditableRxTextView.textChanges(editText)
.map(CharSequence::toString)
.debounce(200, TimeUnit.MILLISECONDS)
.observeOn(AndroidSchedulers.mainThread())
.subscribe(input -> {
output = //...do something with input
editText.setText(ouput)
}));
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