两种方案
- 侵入式防抖处理(NoShakeClickListener) implements View.OnClickListener
- 无侵入式防抖处理(NoShakeClickListener2) not implements View.OnClickListener
侵入式防抖处理(NoShakeClickListener)
1. 既适用于单个View事件防抖, 也适用于Adapter中ItemView事件防抖
2. 如果事件为跳转到新的Activity, 该Activity启动模型应为android:launchMode="singleTop"
Java 版本
public abstract class NoShakeClickListener implements View.OnClickListener {
private long mTimeInterval = 500L;
/**
* 最近一次点击的时间
*/
private long mLastClickTime;
/**
* 最近一次点击的控件ID
*/
private int mLastClickViewId;
public NoShakeClickListener() {
}
public NoShakeClickListener(long interval) {
this.mTimeInterval = interval;
}
@Override
public void onClick(View v) {
final boolean isFastClick = isFastDoubleClick(v, this.mTimeInterval);
if (isFastClick) {
onFastClick(v);
} else {
onSingleClick(v);
}
}
/**
* 是否是快速点击
*
* @param v 点击的控件
* @param interval 时间间期（毫秒）
* @return true:是，false:不是
*/
private boolean isFastDoubleClick(View v, long interval) {
int viewId = v.getId();
long nowTime = System.currentTimeMillis();
long timeInterval = Math.abs(nowTime - mLastClickTime);
if (timeInterval < interval && viewId == mLastClickViewId) {
// 快速点击事件
return true;
} else {
// 单次点击事件
mLastClickTime = nowTime;
mLastClickViewId = viewId;
return false;
}
}
protected void onFastClick(View v) {}
protected abstract void onSingleClick(View v);
}
可简写为
public abstract class NoShakeListener implements OnClickListener {
private long mLastClickTime = 0;
private boolean isFastDoubleClick() {
long nowTime = System.currentTimeMillis();
if (Math.abs(nowTime - mLastClickTime) < 500) {
return true; // 快速点击事件
} else {
mLastClickTime = nowTime;
return false; // 单次点击事件
}
}
@Override
public void onClick(View v) {
if (isFastDoubleClick()) {
onFastClick(v);
} else {
onSingleClick(v);
}
}
protected void onFastClick(View v) {
}
protected abstract void onSingleClick(View v);
}
Kotlin版本
abstract class NoShakeClickListener @JvmOverloads constructor(interval: Long = 500L) : View.OnClickListener {
private var mTimeInterval = 500L
private var mLastClickTime: Long = 0 //最近一次点击的时间
private var mLastClickViewId = 0 //最近一次点击的控件ID
init {
mTimeInterval = interval
}
override fun onClick(v: View) {
if (isFastDoubleClick(v, mTimeInterval)) onFastClick(v) else onSingleClick(v)
}
/**
* 是否是快速点击
*
* @param v 点击的控件
* @param interval 时间间期（毫秒）
* @return true:是，false:不是
*/
private fun isFastDoubleClick(v: View, interval: Long): Boolean {
val viewId = v.id
val nowTime = System.currentTimeMillis()
val timeInterval = abs(nowTime - mLastClickTime)
return if (timeInterval < interval && viewId == mLastClickViewId) {
// 快速点击事件
true
} else {
// 单次点击事件
mLastClickTime = nowTime
mLastClickViewId = viewId
false
}
}
protected open fun onFastClick(v: View?) {}
protected abstract fun onSingleClick(v: View?)
}
差点忘了... 相应的扩展函数:
fun View?.noShake(block: (v: View?) -> Unit) {
this?.apply {
setOnClickListener(object : NoShakeClickListener() {
override fun onSingleClick(v: View?) {
block.invoke(v)
}
})
}
}
RxJava2 clickExt.kt
inline funT.noShake(crossinline listener: T.() -> Unit) = this.noShake(1000, listener) inline fun T.noShake(windowDuration: Long = 500, crossinline listener : T.() -> Unit) = RxView.clicks(this) .throttleFirst(windowDuration, TimeUnit.MILLISECONDS) .subscribe(object : Observer { override fun onSubscribe(d: Disposable) {} override fun onError(e: Throwable) {} override fun onComplete() {} override fun onNext(o: Any) { listener() } })
无侵入式防抖处理(NoShakeClickListener2)
特点:
1 移除了对View.OnClickListener的依赖, 在不破坏原有代码已设置好的OnClickListener基础上继续处理事件防抖;
2 支持简单处理事件和泛型回调
/**
* 事件防抖
* 注: 不仅适用于 View , 其他控件如: MenuItem 同样适用
*
* 1.既适用于单个`View`事件防抖, 也适用于`Adapter`中`ItemView`事件防抖
* 2.如果事件为跳转到新的`Activity`, 该`Activity`启动模型应为`android:launchMode="singleTop"`
*/
open class NoShakeClickListener2 @JvmOverloads constructor(interval: Long = 500L) {
private var mTimeInterval = 500L
private var mLastClickTime: Long = 0 //最近一次点击的时间
private var mLastClick: Any? = null //最近一次点击的控件 View or MenuItem ...
init {
mTimeInterval = interval
}
fun proceedClick() {
if (isFastClick(null, mTimeInterval)) onFastClick(null) else onSingleClick(null)
}
fun proceedClick(item: T?) {
if (isFastClick(item, mTimeInterval)) onFastClick(item) else onSingleClick(item)
}
/**
* 是否是快速点击
*
* @param item 点击的控件 View or MenuItem ...
* @param interval 时间间期（毫秒）
* @return true:是，false:不是
*/
private fun isFastClick(item: T?, interval: Long): Boolean {
val nowTime = System.currentTimeMillis()
val timeInterval = abs(nowTime - mLastClickTime)
return if (timeInterval < interval && item == mLastClick) {
// 快速点击事件
true
} else {
// 单次点击事件
mLastClickTime = nowTime
mLastClick = item
false
}
}
protected open fun onFastClick(item: Any?) {}
protected open fun onSingleClick(item: Any?) {}
}
实用案例
1 简单使用
//快速点击事件
val fastClick=object :NoShakeClickListener2(){
override fun onFastClick(item: Any?) {
super.onFastClick(item)
//此时 item == null
Log.e("123", "onFastClick Click")
}
}
BottomNavigationView.setOnNavigationItemSelectedListener {
switchPage(it.itemId)
fastClick.proceedClick()
true
}
2 回传参数
//快速点击事件
val fastClick=object :NoShakeClickListener2(){
override fun onFastClick(item: Any?) {
super.onFastClick(item)
//此时 item == null 为 proceedClick(it) 中的 it
Log.e("123", "onFastClick Click")
}
}
BottomNavigationView.setOnNavigationItemSelectedListener {
switchPage(it.itemId)
fastClick.proceedClick(it)
true
}
以上就是Android View 事件防抖的两种方案的详细内容，更多关于Android View 事件防抖的资料请关注脚本之家其它相关文章！