android - 我无法在 Activity 中使用 Intent

Question

当我点击 Google Map 上的标记时，我希望它进入另一个 Activity，但是当我从 javascript 得到结果时，它不能做 Intent

WebSettings webSetting = webView.getSettings();
webSetting.setJavaScriptEnabled(true);
webSetting.setDisplayZoomControls(true);
webSetting.setSupportZoom(true);
webSetting.setBuiltInZoomControls(true);
webView.addJavascriptInterface(new JavaScriptInterfaceTest(this), "Android");

和我的JavaScriptInterfaceTest():

public class JavaScriptInterfaceTest {
  Context mContext;

  /** Instantiate the interface and set the context */
  JavaScriptInterfaceTest(Context c) {
    mContext = c;
  }

  /** Show a toast from the web page */
  @JavascriptInterface
  public void responseResult(String result){
    Log.e("JsCallBack","DRINK");
    Intent mainIntent = new Intent(MainActivity.this, Test.class);
    startActivity(mainIntent);
  }

  @JavascriptInterface
  private void startActivity(Intent mainIntent) {
    // TODO Auto-generated method stub
  }
}

HTML:

drinkMarker = new google.maps.Marker({
                   position: {lat: 25.079734,lng: 121.569519},
                   map: map,
                   });
drinkMarker.addListener('click',function(){
                        Android.responseResult("drink");
                        });

Answer 1

传递当前上下文而不是 MainActivity

public class JavaScriptInterfaceTest {
  Context mContext;

  /** Instantiate the interface and set the context */
  JavaScriptInterfaceTest(Context c) {
    mContext = c;
  }

  /** Show a toast from the web page */
  @JavascriptInterface
  public void responseResult(String result){
    Log.e("JsCallBack","DRINK");
    Intent mainIntent = new Intent(mContext, Test.class);
     mContext.startActivity(mainIntent);
  }

  @JavascriptInterface
  private void startActivity(Intent mainIntent) {
    // TODO Auto-generated method stub
  }
}