android webview開發Java代碼裏面調用js代碼失敗解決方法

一些簡單的原因如：js接口沒開、方法名拼寫錯誤等不做過多贅述。

本片博客主要研究以下報錯原因：

java.lang.RuntimeException: java.lang.Throwable: A WebView method was called on thread 'JavaBridge'. All WebView methods must be called on the same thread. (Expected Looper Looper (main, tid 1) {4186a978} called on Looper (JavaBridge, tid 385) {41a24830}, FYI main Looper is Looper (main, tid 1) {4186a978})

字面翻譯就是：你沒在主線程操作webview，報錯

只要把操作webview的代碼放在UI線程裏面執行就可以了：

runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    if (version < 18) {
                        show("low");
                        wv.loadUrl("javascript:goMy()");
                    } else {
                        show("high");
                        wv.evaluateJavascript("javascript:goMy()", new ValueCallback<String>() {
                            @Override
                            public void onReceiveValue(String value) {
                                //此處爲 js 返回的結果
                            }
                        });
                    }
                }
});