BrowserActivity.java

package com.troy.xifan.activity;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import butterknife.BindView;
import butterknife.ButterKnife;
import com.chenenyu.router.annotation.Route;
import com.troy.xifan.R;
import com.troy.xifan.config.Constants;

/**
 * Created by chenlongfei on 2017/2/17.
 */

@Route({ Constants.Router.BROWSER, Constants.Router.SCHEME + Constants.Router.BROWSER })
public class BrowserActivity extends BaseActivity {
    public static final String BUNDLE_URL = "url";

    @BindView(R.id.toolbar) Toolbar mToolbar;
    @BindView(R.id.webview) WebView mWebView;

    private String mUrl;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_borwser);
        ButterKnife.bind(this);
        Bundle bundle = getIntent().getExtras();
        if (bundle != null) {
            mUrl = bundle.getString(BUNDLE_URL);
        }
        initViews();
    }

    @Override
    protected void initViews() {
        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        WebSettings webSettings = mWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);

        mWebView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                view.loadUrl(request.getUrl().toString());
                return true;
            }
        });
        mWebView.setWebChromeClient(new WebChromeClient() {
            @Override
            public void onReceivedTitle(WebView view, String title) {
                mToolbar.setTitle(title);
            }
        });
        if (!TextUtils.isEmpty(mUrl)) {
            mWebView.loadUrl(mUrl);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                finish();
                break;
        }
        return super.onOptionsItemSelected(item);
    }

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