WebView基类：BaseWebActivity

java代码：

package com...web;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.shushan.base.BaseActivity;
import com.shushan.base.ScreenManager;
import com.tencent.smtt.sdk.WebChromeClient;
import com.tencent.smtt.sdk.WebSettings;
import com.tencent.smtt.sdk.WebView;
import com.tencent.smtt.sdk.WebViewClient;
import com...R;

/**
 * @ClassName: BaseWebActivity
 * @Desciption: webview基础activity
 * @author: jesse_android
 * @date: 2018-05-10
 */
public class BaseWebActivity extends BaseActivity implements View.OnClickListener {

    private static final String TAG = "BaseWebActivity";

    protected WebView mWebView;
    private ProgressBar progressBar;
    private TextView titleTextView;
    private ImageView backImg;
    private TextView backTextView;
    private TextView rightBackText;

    protected String title;
    protected String url;

    private static final boolean enableProgressBar = false;
    private boolean canBack = false;


    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        initWindow();

        setContentView(R.layout.base_web_activity);

        initView();

        initWebView();

        title = getIntent().getStringExtra("title");
        if(!TextUtils.isEmpty(title)){
            titleTextView.setText(title);
        }
        url = getIntent().getStringExtra("url");
        Log.i(TAG,"url=" + url);

        mWebView.loadUrl(url);
    }

    private void initWindow() {
        ScreenManager screenManager;
        screenManager = ScreenManager.getInstance();
        screenManager.setStatusBar(true, this);
        screenManager.setScreenRoate(true, this);
        screenManager.setFullScreen(false, this);
    }

    private void initView() {
        mWebView = findViewById(R.id.base_web_webview);
        progressBar = findViewById(R.id.base_web_progress_bar);
        titleTextView = findViewById(R.id.base_web_title_tv);
        backImg = findViewById(R.id.base_web_left_back_img);
        backImg.setOnClickListener(this);
        backTextView = findViewById(R.id.base_web_title_back_tv);
        backTextView.setOnClickListener(this);
        rightBackText = findViewById(R.id.base_web_title_right_tv);
        rightBackText.setOnClickListener(this);
        if(canBack){
            rightBackText.setVisibility(View.VISIBLE);
        }else {
            rightBackText.setVisibility(View.GONE);
        }
    }

    private void initWebView() {
        WebSettings mWebSettings = mWebView.getSettings();
        mWebSettings.setSupportZoom(true);
        mWebSettings.setLoadWithOverviewMode(true);
        mWebSettings.setUseWideViewPort(true);
        mWebSettings.setDefaultTextEncodingName("utf-8");
        mWebSettings.setLoadsImagesAutomatically(true);

        //调用JS方法.安卓版本大于17,加上注解 @JavascriptInterface
        mWebSettings.setJavaScriptEnabled(true);

        mWebView.setWebChromeClient(webChromeClient);
        mWebView.setWebViewClient(webViewClient);
    }

    WebViewClient webViewClient = new WebViewClient(){

        /**
         * 多页面在同一个WebView中打开，就是不新建activity或者调用系统浏览器打开
         */
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

    };

    WebChromeClient webChromeClient = new WebChromeClient() {

        @Override
        public void onProgressChanged(WebView webView, int newProgress) {
            super.onProgressChanged(webView, newProgress);

            if(enableProgressBar){
                if(newProgress == 100){
                    progressBar.setVisibility(View.GONE);//加载完网页进度条消失
                } else{
                    progressBar.setVisibility(View.VISIBLE);//开始加载网页时显示进度条
                    progressBar.setProgress(newProgress);//设置进度值
                }
            }

        }
    };

    protected void onLeftBackward() {
        Log.i(TAG,"onLeftBackward()");

        onBackAction();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            goBack();
            return true;
        }

        return super.onKeyDown(keyCode, event);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.base_web_left_back_img:
            case R.id.base_web_title_back_tv:
                goBack();
                break;
            case R.id.base_web_title_right_tv:
                onLeftBackward();
                break;
            default:
                break;
        }
    }

    private void goBack() {
        if(canBack){
            if(mWebView.canGoBack()){
                mWebView.goBack();
            }else {
                onLeftBackward();
            }
        }else {
            onLeftBackward();
        }

    }

    public boolean isCanBack() {
        return canBack;
    }

    public void setCanBack(boolean canBack1){
        canBack = canBack1;
    }
}

这里导入的腾讯包如果找不到，换成android原生包即可。

如果需要拦截链接，在webViewClient中实现即可。

xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="64dp"
        android:background="@color/bg_navigation_bar"
        android:orientation="vertical">

        <View
            android:id="@+id/base_web_divider"
            android:layout_width="match_parent"
            android:layout_height="20dp"
            android:background="@color/bg_navigation_bar" />

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <ImageView
                android:id="@+id/base_web_left_back_img"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginLeft="12dp"
                android:padding="0dp"
                android:src="@drawable/ic_back_white" />

            <TextView
                android:id="@+id/base_web_title_back_tv"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginLeft="5dp"
                android:layout_toRightOf="@id/base_web_left_back_img"
                android:text="返回"
                android:textColor="@color/white_text_color"
                android:textSize="15sp" />

            <TextView
                android:id="@+id/base_web_title_tv"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:text=""
                android:textColor="@color/white_text_color"
                android:textSize="18sp" />

            <TextView
                android:id="@+id/base_web_title_right_tv"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_alignParentRight="true"
                android:layout_marginRight="5dp"
                android:padding="5dp"
                android:text="关闭"
                android:textColor="@color/white_text_color"
                android:textSize="15sp"
                android:visibility="gone"/>
        </RelativeLayout>
    </LinearLayout>

    <ProgressBar
        android:id="@+id/base_web_progress_bar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="3dip"
        android:progressDrawable="@drawable/web_progress"
        android:visibility="gone" />

    <com.tencent.smtt.sdk.WebView
        android:id="@+id/base_web_webview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

欢迎参观博主其他博客。

WebView基类：BaseWebActivity

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