java (Android) Webview 刷新按钮

( Android ) Webview refresh button

提问by k0spwn

I'm trying to create a button to reload a Webview but ( sorry I'm new in android developement ) I didn't find a way to do it ( even in stackoverflow )

我正在尝试创建一个按钮来重新加载 Webview，但是（对不起，我是 android 开发的新手）我没有找到方法（即使在 stackoverflow 中）

Here is the Mainactivity.java

这是 Mainactivity.java

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebView;
import android.widget.Button;

import static com.d4rkunicorn.partyhard.R.id.webView;


public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        WebView webview = new WebView(this);
        setContentView(webview);
        webview.getSettings().setJavaScriptEnabled(true);
        webview.loadUrl("url");
    }

}

The webview.xml :

webview.xml ：

<?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:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
    android:id="@+id/webview.xml">

<WebView  xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/webview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"

    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true" />

    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:text="REFRESH"
        android:id="@+id/button" />

 </RelativeLayout>

Thanks for helping

谢谢你的帮助

回答by Android Team

In Activity class :

在活动类中：

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebView;
import android.widget.Button;

import static com.d4rkunicorn.partyhard.R.id.webView;


public class MainActivity extends ActionBarActivity {

     WebView webview;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        webview = new WebView(this);
        setContentView(webview);
        webview.getSettings().setJavaScriptEnabled(true);
        webview.loadUrl("url");

        Button button = (Button) findViewById(R.id.button);

        button.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                webview.reload();

            }
        });
    }

}

In Layout XML :

在布局 XML 中：

<?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:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
    android:id="@+id/webview.xml">

<WebView  xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/webview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"

    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true" />

    <Button
         android:id="@+id/button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:text="REFRESH"
        android:id="@+id/button" />

 </RelativeLayout>

Hope it will help you !!

希望能帮到你！！

回答by Michael

There many possible way to reload your webview, one the method is 1. you can use webview.loadUrl( "javascript:window.location.reload( true )" );inside any method/action event 2. webview.loadUrl(webview.toString); //geting the webview url and use to reload ur web page3. webview.loadUrl(url); // you can use your desire url to reload ur web page4. webview.loadUrl( "onclick=\"window.history.back()"\");

有许多可能的方式来重新加载的网页视图，一个方法是1，你可以用 webview.loadUrl( "javascript:window.location.reload( true )" );任何方法/行动事件2中webview.loadUrl(webview.toString); //geting the webview url and use to reload ur web page3 webview.loadUrl(url); // you can use your desire url to reload ur web page4。webview.loadUrl( "onclick=\"window.history.back()"\");

回答by KishuDroid

You can reload your web view or you can use below code :

您可以重新加载 Web 视图，也可以使用以下代码：

yourActivity.this.webView.loadUrl(url);

on your button click.

在您的按钮上单击。