webview

public class webActivity extends AppCompatActivity {
        WebView mWebview;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web);
        mWebview = findViewById(R.id.webview);
        mWebview.getSettings().setJavaScriptEnabled(true);
        WebSettings webSettings = mWebview.getSettings();
        webSettings.setAppCacheEnabled(true);
        webSettings.setDomStorageEnabled(true); //設置了Doestorage 才能實現免登錄跳轉到html的功能
        //webSettings.supportMultipleWindows();
        //webSettings.setAllowContentAccess(true);
        webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
        webSettings.setUseWideViewPort(true);
       webSettings.setLoadWithOverviewMode(true);
        webSettings.setSavePassword(true);
        webSettings.setSaveFormData(true);
        webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
        webSettings.setLoadsImagesAutomatically(true);
        String body ="示例：這裏有個img標籤，地址是相對路徑<img src='/uploads/allimg/130923/1FP02V7-0.png' />";
      //  mWebview.loadDataWithBaseURL("https://", body, "text/html", "utf-8","www.baidu.com");
       mWebview.loadUrl("https://jifen.bianxianmao.com/?appKey=a56a2213163e6371d&appType=app&appUid=12345&timestamp=1529572949596&sign=5066b94badada310daed2c1afb0ffc08");
        //設置WebChromeClient類
        mWebview.setWebChromeClient(new WebChromeClient() {


            //獲取網站標題
            @Override
            public void onReceivedTitle(WebView view, String title) {
                System.out.println("標題在這裏");
            }

            //獲取加載進度
            @Override
            public void onProgressChanged(WebView view, int newProgress) {
            }
        });


        //設置WebViewClient類
        mWebview.setWebViewClient(new WebViewClient() {
            //設置加載前的函數
            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {

            }

            //設置結束加載函數
            @Override
            public void onPageFinished(WebView view, String url) {
                L.e("aaaaaaaa url "+ url);

            }
        });
    }

    //點擊返回上一頁面而不是退出瀏覽器
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK && mWebview.canGoBack()) {
            mWebview.goBack();
            return true;
        }

        return super.onKeyDown(keyCode, event);
    }

    //銷燬Webview
    @Override
    protected void onDestroy() {
        if (mWebview != null) {
            mWebview.loadDataWithBaseURL(null, "", "text/html", "utf-8", null);
            mWebview.clearHistory();

            ((ViewGroup) mWebview.getParent()).removeView(mWebview);
            mWebview.destroy();
            mWebview = null;
        }
        super.onDestroy();
    }