Android 和 html的js交互

╰+哭是因爲堅強的太久メ 2021-09-15 15:16 311阅读 0赞

![70][]

使用场景：

当界面需要加载html，并且单纯显示已经不满足需求

使用方法：

![70 1][]

原理是不可能讲原理的，对于一个月薪不足25K的小白这辈子都不可能讲原理的，那就上代码：

demo地址：[https://gitee.com/longlyblack/JavascriptBridge.git][https_gitee.com_longlyblack_JavascriptBridge.git]

<?xml version="1.0" encoding="utf-8"?>
    <layout
        xmlns:android="http://schemas.android.com/apk/res/android"
        >
        <data>
            <variable
                name="activity"
                type="com.yarui.app.client.ui.activity.AIHtmlActivity"/>
        </data>
    
        <LinearLayout
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:background="@color/F1F1F1"
            android:orientation="vertical"
            android:fitsSystemWindows="true"
            >
    
            <include layout="@layout/view_base_title_bar" />
    
            <com.yarui.app.client.ui.view.ProgressWebView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/webview"
                />
    
        </LinearLayout>
    
    
    </layout>

public class AIHtmlActivity extends BaseActivity {
    
        ActivityAihtmlBinding aihtmlBinding;
        String info = "137820";
        String str = "http://192.168.1.152:8080/QualityTracking/views/sign/userDivision.html";
    
        @Override
        protected void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            aihtmlBinding = DataBindingUtil.setContentView(this, R.layout.activity_aihtml);
            aihtmlBinding.setActivity(this);
            initView();
        }
    
        @SuppressLint({"SetJavaScriptEnabled", "JavascriptInterface"})
        private void initView() {
            setBack();
            setTitleText("调试html");
    
              binding.webView.getSettings().setDomStorageEnabled(true);
            binding.webView.getSettings().setAppCacheMaxSize(1024 * 1024 * 8);
            String appCachePath = getApplicationContext().getCacheDir()
                    .getAbsolutePath();
            binding.webView.getSettings().setAppCachePath(appCachePath);
            binding.webView.getSettings().setAllowFileAccess(true);
            binding.webView.getSettings().setAppCacheEnabled(true);
            binding.webView.getSettings().setJavaScriptEnabled(true);
            binding.webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
            binding.webView.addJavascriptInterface(PayOfBankActivity.this, "android");
            binding.webView.setWebViewClient(new MyWebViewClient());
            binding.webView.loadUrl(Constants.URL_BANK_PAY);//你的HTML地址
        }
    
        /**
         * 页面加载完毕的监听
         * javascript: XXXXX(     是html界面方法的名称
         */
        public class MyWebViewClient extends WebViewClient {
            @Override
            public void onPageFinished(WebView view, String url) {
                aihtmlBinding.webview.loadUrl("javascript:loadData(" + info + ")");
            }
        }
    
        //html调用android无参方法
        @JavascriptInterface
        public void SHJObject(){
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(AIHtmlActivity.this, "44944", Toast.LENGTH_SHORT).show();
                }
            });
        }
    
        //html调用android有参方法
        @JavascriptInterface
        public void FLCObject(final String str){
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(AIHtmlActivity.this, str, Toast.LENGTH_SHORT).show();
                }
            });
        }
    
    }

实不相瞒，代码是抄人家的，至于谁的已经忘了，对不起。

亲测，有用！

有问题请联系小弟：

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[70]: /images/20210901/8b6bd848a6c84c8d856e7a0173e62a0a.png
[70 1]: /images/20210901/0df148427f2f4b1482cbe1ef06909462.png
[https_gitee.com_longlyblack_JavascriptBridge.git]: https://gitee.com/longlyblack/JavascriptBridge.git