js实现界面向原生界面发消息并跳转功能

public class TestActivity extends AppCompatActivity {  private Button mBtGoBack;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_test);    mBtGoBack = (Button) findViewById(R.id.bt_go_back);    mBtGoBack.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View view) {        finish();      }    });  }}

public class ExampleInterface extends ReactContextBaseJavaModule {  private ReactApplicationContext mRApplicationContext;  public ExampleInterface(ReactApplicationContext reactContext) {    super(reactContext);    mRApplicationContext = reactContext;  }  //RN使用这个名称来调用原生模块的其他函数  @Override  public String getName() {    return "ExampleInterface";  }  //必须写@ReactMethod，将其注册为能够被React调用的函数  @ReactMethod  public void HandlerMessage(String aMessage){    Log.d("lt","====receive message from RN==="+aMessage);     //这部分实现简单的跳转    Intent intent = new Intent(mRApplicationContext,TestActivity.class);    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);    mRApplicationContext.startActivity(intent);   }}

public class AnExampleReactPackage implements ReactPackage {  @Override  public List<NativeModule> createNativeModules(ReactApplicationContext reactApplicationContext) {    List<NativeModule> modules = new ArrayList<>();    modules.add(new ExampleInterface(reactApplicationContext));    return modules;  }  @Override  public List<Class<? extends JavaScriptModule>> createJSModules() {    return Collections.emptyList();  }  @Override  public List<ViewManager> createViewManagers(ReactApplicationContext reactApplicationContext) {    return Collections.emptyList();  }}

 @Override  protected List<ReactPackage> getPackages() {   return Arrays.<ReactPackage>asList(     new MainReactPackage(),     new AnExampleReactPackage()   );  }

buttonPress:function(){  NativeModules.ExampleInterface.HandlerMessage('test');  }