1、處理表單驗證
注：在build.gradle中添加依賴
implementation 'android.arch.persistence.room:rxjava2:1.1.1'
或者：
implementation 'com.jakewharton.rxbinding3:rxbinding-material:3.0.0-alpha2'
1.1、僅僅處理一個編輯框以及按鈕變色和可點擊
可以使用RXTextView
private fun initView() {
RxTextView.textChanges(yaoqingCode!!).map { it ->//參數放的是控件id
it.length == 6//輸入框的限定
}.subscribe {
registe.isEnabled = it//按鈕是否可被點擊
}
}
1.2、僅僅處理兩個參數
Observable.combineLatest(RxTextView.textChanges(mPhone), RxTextView.textChanges(mPsw),
new BiFunction<CharSequence, CharSequence, Boolean>() {
@Override
public Boolean apply(CharSequence charSequence, CharSequence charSequence2) throws Exception {
return charSequence.length() == 11 && charSequence2.length() > 5;//限定
}
}).subscribe(new Consumer<Boolean>() {
@Override
public void accept(Boolean aBoolean) throws Exception {
mLogin.setEnabled(aBoolean);//按鈕
}
});
1.3、處理兩個以上參數
Observable.combineLatest(RxTextView.textChanges(etPhone), RxTextView.textChanges(password)
, RxTextView.textChanges(etCode), Function3<CharSequence, CharSequence, CharSequence, Boolean> { t1, t2, t3 ->
t1.length == 11 && t2.length > 5 && t3.length > 3//限定
}).subscribe { aBoolean ->
tvLogin.isEnabled = aBoolean//按鈕
}
1.4、在 Activity／Fragment 銷燬生命週期中取消異步操作防止內存泄露
private val mDisposables = CompositeDisposable()
private fun initView() {
val subscribe = Observable.combineLatest(RxTextView.textChanges(etPhone), RxTextView.textChanges(password)
, RxTextView.textChanges(etCode), Function3<CharSequence, CharSequence, CharSequence, Boolean> { t1, t2, t3 ->
t1.length == 11 && t2.length > 5 && t3.length > 3
}).subscribe { aBoolean ->
tvLogin.isEnabled = aBoolean
}
mDisposables.add(subscribe)
}
//回收
override fun onDestroy() {
super.onDestroy()
if (!mDisposables.isDisposed) {
mDisposables.dispose()
}
mDisposables.clear()
}