android 通过onActivityResult，调用react native 的函数

在Android中通过onActivityResult回调调用React Native中的函数，你需要遵循以下步骤：

1. 在React Native中创建一个模块，该模块暴露一个可以从原生代码调用的函数。
2. 从Android原生代码中，启动一个React Activity并传递一个Intent。
3. 在React Activity中，重写onActivityResult方法，并通过ReactInstanceManager调用之前暴露的函数。

以下是实现这些步骤的示例代码：

React Native Module (MyModule.java)

package com.yourpackage;
 
import android.content.Intent;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.Callback;
 
public class MyModule extends ReactContextBaseJavaModule {
 
    public MyModule(ReactApplicationContext context) {
        super(context);
    }
 
    @Override
    public String getName() {
        return "MyModule";
    }
 
    @ReactMethod
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        // 调用React Native函数处理结果
        Callback callback = callbacks.get(requestCode);
        if (callback != null) {
            callback.invoke(resultCode, data);
        }
    }
}

Android Activity

public class MyActivity extends Activity {
 
    private ReactInstanceManager reactInstanceManager;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        // 初始化ReactInstanceManager
        reactInstanceManager = ReactInstanceManager.builder()
                .setApplication(getApplication())
                .setBundleAssetName("index.android.bundle")
                .setJSMainModuleName("index.android")
                .addPackage(new MainReactPackage())
                .setUseDeveloperSupport(BuildConfig.DEBUG)
                .setInitialLifecycleState(LifecycleState.RESUMED)
                .build();
        
        // 启动React Activity
        ReactActivity.launch(this, MainApplication.class, reactInstanceManager, "MyModule", null);
    }
 
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
 
        // 调用React Native的onActivityResult函数
        reactInstanceManager.onActivityResult(this, re