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：
- 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。
- 从Android原生代码中，启动一个React Activity并传递一个Intent。
- 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
