简介
RxBinding 能够把 Android 平台的兼容包内的 UI 控件变为 Observaber 对象. 可以把 UI 控件的事件当作 RxJava 中的数据流来使用。不同的依赖库引入了不同的控件可支持的Rxbinding
注：RxBinding包中包含RxJava的内容，所以就无需再添加RxJava的依赖了
RxBinding 的 GitHub 地址
RxBinding 的优点:
- 它是对 Android View 事件的扩展, 它使得开发者可以对 View 事件使用 RxJava 的各种操作。
- 提供了与 Rxjava 一致的回调, 使得代码简洁明了。
- 几乎支持所有的常用控件及事件, 还对 Kotlin 支持.
使用场景
可以应用于整个 App 的所有 UI 事件.
依赖
implementation 'com.jakewharton.rxbinding3:rxbinding-core:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-appcompat:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-drawerlayout:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-leanback:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-recyclerview:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-slidingpanelayout:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-swiperefreshlayout:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-viewpager:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-material:3.0.0-alpha2'
简单使用
1.点击事件
RxView.clicks(text1)
.subscribe(new Consumer<Object>() {
@Override
public void accept(@NonNull Object o) throws Exception {
Toast.makeText(MainActivity.this,"演示点击事件",Toast.LENGTH_SHORT).show();
}
});
2.长点击事件
RxView.longClicks(text2)
.subscribe(new Consumer<Object>() {
@Override
public void accept(@NonNull Object o) throws Exception {
Toast.makeText(MainActivity.this,"演示长点击事件",Toast.LENGTH_SHORT).show();
}
});
3.防止重复点击
RxView.clicks(text3)
.compose(RxUtils.useRxViewTransformer(MainActivity.this))
.subscribe(new Consumer<Object>() {
@Override
public void accept(@NonNull Object o) throws Exception {
Toast.makeText(MainActivity.this,"防止重复点击",Toast.LENGTH_SHORT).show();
}
});
4.表单验证
Observable<CharSequence> ObservablePhone = RxTextView.textChanges(phone);
Observable<CharSequence> ObservablePassword = RxTextView.textChanges(password);
Observable.combineLatest(ObservablePhone, ObservablePassword, new BiFunction<CharSequence,CharSequence,ValidationResult>() {
@Override
public ValidationResult apply(@NonNull CharSequence o1, @NonNull CharSequence o2) throws Exception {
if (o1.length()>0 || o2.length()>0) {
login.setBackgroundDrawable(getResources().getDrawable(R.drawable.shape_login_pressed));
} else {
login.setBackgroundDrawable(getResources().getDrawable(R.drawable.shape_login_normal));
}
ValidationResult result = new ValidationResult();
if (o1.length()==0) {
result.flag = false;
result.message = "手机号码不能为空";
} else if (o1.length()!=11) {
result.flag = false;
result.message = "手机号码需要11位";
} else if (o1 !=null && !AppUtils.isPhoneNumber(o1.toString())) {
result.flag = false;
result.message = "手机号码需要数字";
} else if(o2.length()==0) {
result.flag = false;
result.message = "密码不能为空";
}
return result;
}
}).subscribe(new Consumer<ValidationResult>() {
@Override
public void accept(@NonNull ValidationResult r) throws Exception {
result = r;
}
});
RxView.clicks(login)
.compose(RxUtils.useRxViewTransformer(TestEditTextActivity.this))
.subscribeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<Object>() {
@Override
public void accept(@NonNull Object o) throws Exception {
if (result==null) return;
if (result.flag) {
Toast.makeText(TestEditTextActivity.this,"模拟登录成功",Toast.LENGTH_SHORT).show();
} else if (Preconditions.isNotBlank(result.message)) {
Toast.makeText(TestEditTextActivity.this,result.message,Toast.LENGTH_SHORT).show();
}
}
});
5.点击后获取倒计时
Observable<Unit> observable = RxView.clicks(bDownload).share();
Disposable disposable = observable
.throttleFirst(SECOND, TimeUnit.SECONDS)
.subscribeOn(AndroidSchedulers.mainThread())
.doOnNext(new Consumer<Unit>() {
@Override
public void accept(Unit unit) throws Exception {
Toast.makeText(MainActivity.this, "点击了url=" + url, Toast.LENGTH_SHORT).show();
}
})
.compose(this.bindUntilEvent(ActivityEvent.STOP))
.subscribe(new Consumer<Unit>() {
@Override
public void accept(Unit unit) throws Exception {
Observable.interval(1,TimeUnit.SECONDS,AndroidSchedulers.mainThread())
.take(SECOND)
.subscribe(new Observer<Long>() {
@Override
public void onSubscribe(Disposable d) {
}
@Override
public void onNext(Long aLong) {
String time="剩余"+(SECOND-aLong-1)+"秒";
tvTime.setText(time);
}
@Override
public void onError(Throwable e) {
}
@Override
public void onComplete() {
tvTime.setText("剩余时间");
}
});
}
});
使用中遇到的问题
问题1： 编译时不通过，告警More than one file was found with OS independent path ‘META-INF/proguard/androidx-annotations.pro’
解决办法
在gradle文件的defaultConfig中添加代码，类似的代码可以按照相同的方式处理，排除文件重复
defaultConfig {
packagingOptions {
exclude 'META-INF/proguard/androidx-annotations.pro'
}
}
