Java 在webview上添加拉入刷新以进行刷新
我将在我的webview上添加pull刷新,以便刷新我的webview。我已经看到了这个页面上的所有问题,但我找不到好的方法来添加拉刷新 Mainactivity.javaJava 在webview上添加拉入刷新以进行刷新,java,android,android-studio,webview,pull-to-refresh,Java,Android,Android Studio,Webview,Pull To Refresh,我将在我的webview上添加pull刷新,以便刷新我的webview。我已经看到了这个页面上的所有问题,但我找不到好的方法来添加拉刷新 Mainactivity.java package com.vvhvb.hesselfeenstra.vvheerenveenseboys; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.webkit.WebView; imp
package com.vvhvb.hesselfeenstra.vvheerenveenseboys;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String url ="http://heerenveenseboys.nl/";
WebView view=(WebView) this.findViewById(R.id.webView);
view.getSettings().setJavaScriptEnabled(true);
view.getSettings().setBuiltInZoomControls(true);
view.getSettings().setDisplayZoomControls(false);
view.setWebViewClient(new WebViewClient());
view.loadUrl(url);
}
}
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.vvhvb.hesselfeenstra.vvheerenveenseboys.MainActivity"
tools:showIn="@layout/activity_main">
<WebView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/webView"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
我希望任何人都能帮我解决这个问题 如果您只想拉动刷新,请尝试此操作
ll = (LinearLayout)findViewById(R.id.CategorySelect_lLayout_noID);
ll.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN){
Toast.makeText(CategorySelect.this, "action DOWN called", Toast.LENGTH_SHORT).show();
return true;
}
return false;
}
});
return true;
}
或者如果你想要一个图标或者类似chrome的东西
您可以使用滑动刷新布局,它易于使用,并为您处理刷新动画
您可以添加一个OnRefreshListener来刷新您的Web视图您可以像这样将Web视图包装在Swipe refesh布局中
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.vvhvb.hesselfeenstra.vvheerenveenseboys.MainActivity"
tools:showIn="@layout/activity_main">
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipeContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
</android.support.v4.widget.NestedScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
我认为最好的解决方案是使用
SwipeRefreshLayout
,但不使用NestedScrollView
,因为可能会出现此问题:。但对于滚动问题,还有另一种解决方案,如所述,要实现ViewTreeObserver.OnScrollChangedListener
,工作解决方案应该是这样的:
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipeContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<RelativeLayout
android:id="@+id/nonVideoLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:windowSoftInputMode="adjustResize">
<WebView
android:id="@+id/main_web_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:windowSoftInputMode="adjustResize"
app:layout_constraintDimensionRatio="1" />
</RelativeLayout>
</android.support.v4.widget.SwipeRefreshLayout>
在活动onCreate
上:
mWebView = (WebView) findViewById(R.id.main_web_view);
mySwipeRefreshLayout = (SwipeRefreshLayout)this.findViewById(R.id.swipeContainer);
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
mWebView.reload();
}
}
);
和活动的实现:实现AdvancedWebView.Listener
在顶部的活动上
:
mySwipeRefreshLayout.getViewTreeObserver().removeOnScrollChangedListener(mOnScrollChangedListener);
和活动onStart
:
mySwipeRefreshLayout.getViewTreeObserver().addOnScrollChangedListener(mOnScrollChangedListener =
new ViewTreeObserver.OnScrollChangedListener() {
@Override
public void onScrollChanged() {
if (mWebView.getScrollY() == 0)
mySwipeRefreshLayout.setEnabled(true);
else
mySwipeRefreshLayout.setEnabled(false);
}
});
这应该是完美的!在布局文件中,将webview包装为SwiperFreshLayout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipeContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="@+id/webView"
/>
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
activity_main.xml
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipeContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<WebView
android:id="@+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent" app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="0dp"
android:layout_marginLeft="0dp"
android:layout_marginStart="0dp"
android:layout_marginEnd="0dp"
android:layout_marginRight="0dp"
android:layout_marginBottom="0dp"
app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.v4.widget.SwipeRefreshLayout>
对于科特林:
MainActivity.kt
var mySwipeRefreshLayout: SwipeRefreshLayout? = null
var myWebView: WebView? = null
mySwipeRefreshLayout = findViewById<SwipeRefreshLayout>(R.id.swipeContainer)
mySwipeRefreshLayout?.setOnRefreshListener {
Log.i("on refresh", "onRefresh called from SwipeRefreshLayout")
// This method performs the actual data-refresh operation.
// The method calls setRefreshing(false) when it's finished.
myWebView?.reload();
}
myWebView!!.webViewClient = object : WebViewClient() {
override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
view?.loadUrl("http://www.google.com")
return false;
}
override fun onPageFinished(view: WebView?, url: String?) {
mySwipeRefreshLayout?.isRefreshing = false
}
}
var mysweep刷新布局:SwipeRefreshLayout?=无效的
var myWebView:WebView?=无效的
mySwipeRefreshLayout=findViewById(R.id.swipContainer)
mySwipeRefreshLayout?.setOnRefreshListener{
Log.i(“在刷新时”,“从SwipeRefreshLayout调用onRefresh”)
//此方法执行实际的数据刷新操作。
//该方法在完成时调用setRefreshing(false)。
myWebView?.reload();
}
myWebView!!。webViewClient=对象:webViewClient(){
override fun shouldOverrideUrlLoading(视图:WebView?,url:字符串?):布尔值{
查看?.loadUrl(“http://www.google.com")
返回false;
}
覆盖乐趣onPageFinished(视图:WebView?,url:字符串?){
mySwipeRefreshLayout?.isRefreshing=false
}
}
我可以用它刷新我的webview吗?是的,你可以在MotionEvent.ACTION\u之后再次将loadURL()和一些查询放在一起,如果你想要更多类型的运动,请参考@Hessel,找到一个函数来获取线性布局中的所有内容,我有RelativeLayout,当我粘贴webview.reload()时这一行给了我一个错误。您必须在onCreate()中定义webview webview=(webview)findViewById(R.id.web_view),然后在onCreate中调用webview.loadUrl(“您的url”)
,以最初加载wbeview。然后调用webview.reload()代码>内部onRefresh
after reload()函数。谢谢!但是您应该在PageFinished{swRefreshLayout.setRefreshing(false);}上执行该操作。这对我根本不起作用,它显示的是纯白色的空白屏幕。由于nestedscrollview行为粗暴,您不需要添加此行,因为它默认设置为LOAD_DEFAULT
modemWebview.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT)代码>是的,只有这个解决方案可以平滑加载,android.support.v4.widget.NestedScrollView在加载时是wrap webview,加载并不漂亮。
mySwipeRefreshLayout = (SwipeRefreshLayout)this.findViewById(R.id.swipeContainer);
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
mWebview.reload();
mWebview.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
// This is important as it forces webview to load from the instead of reloading from cache
mWebview .loadUrl(getString(R.string.app_link));
}
}
);
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipeContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<WebView
android:id="@+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent" app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="0dp"
android:layout_marginLeft="0dp"
android:layout_marginStart="0dp"
android:layout_marginEnd="0dp"
android:layout_marginRight="0dp"
android:layout_marginBottom="0dp"
app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.v4.widget.SwipeRefreshLayout>
var mySwipeRefreshLayout: SwipeRefreshLayout? = null
var myWebView: WebView? = null
mySwipeRefreshLayout = findViewById<SwipeRefreshLayout>(R.id.swipeContainer)
mySwipeRefreshLayout?.setOnRefreshListener {
Log.i("on refresh", "onRefresh called from SwipeRefreshLayout")
// This method performs the actual data-refresh operation.
// The method calls setRefreshing(false) when it's finished.
myWebView?.reload();
}
myWebView!!.webViewClient = object : WebViewClient() {
override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
view?.loadUrl("http://www.google.com")
return false;
}
override fun onPageFinished(view: WebView?, url: String?) {
mySwipeRefreshLayout?.isRefreshing = false
}
}