webview简单互调

package com.example.mouth.fragment;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.JavascriptInterface;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;

import com.example.mouth.R;

public class WoDeFragment extends Fragment {

    private View view;
    private WebView webview;
    private Button button_wode;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = View.inflate(getActivity(), R.layout.wodefragment, null);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        webview = view.findViewById(R.id.webview);
        button_wode = view.findViewById(R.id.button_wode);

        button_wode.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        webview.loadUrl("javascript:changeColor('#DCDCDC')");
                    }
                });

            }
        });

        webview.loadUrl("https://abnerming8.github.io/abnerming.html");
        //获取设置管理器
        WebSettings settings = webview.getSettings();
        //开启权限可以跟js交互的权限
        settings.setJavaScriptEnabled(true);
        //Alert弹窗需要我们开权限
        settings.setJavaScriptCanOpenWindowsAutomatically(true);
        //添加你和html5要交互的方法  参数1：是定义两边需要交互的方法  参数2：就是html那边的调用者
        webview.addJavascriptInterface(new TestTwo(), "android");

        webview.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                view.loadUrl("https://abnerming8.github.io/abnerming.html");
                return super.shouldOverrideUrlLoading(view, request);
            }
        });

        webview.setWebChromeClient(new WebChromeClient() {
            @Override
            public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
                return super.onJsAlert(view, url, message, result);
            }
        });

    }

    private class TestTwo {
        @JavascriptInterface
        public void show() {
            getActivity().runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    webview.loadUrl("javascript:toast()");
                }
            });
        }
    }
}
//https://www.jianshu.com/p/97f52819a19d更多的HTML5的调用