反应本机 onActivityResult 不起作用

Posted 2023-05-07

【中文标题】反应本机 onActivityResult 不起作用

【英文标题】：React Native onActivityResult not work

【发布时间】：2016-07-20 00:42:56

【问题描述】：

我有一个 React Native 的 webview 组件。 webview应该支持输入类型是文件，所以我这样做：

File Upload in WebView

并且 webview 实现了 ActivityEventListener 并覆盖了 onActivityResult。但是 onActivityResult 不起作用。

代码是

class RNWebView extends WebView implements ActivityEventListener 
      protected class GeoWebChromeClient extends WebChromeClient 
          public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) 
           ...
            mActivity.startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);
            return true;
          
      

    public RNWebView(ReactContext reactContext, Activity activity) 
        super(reactContext);
        // Add the listener for `onActivityResult`
        reactContext.addActivityEventListener(this);
        ...
     

@Override
public void onActivityResult(final int requestCode, final int resultCode, final Intent intent) 
    // Your logic here
    Log.d("Tanck", "requestCode:" + requestCode + "----" + "resultCode:" + resultCode);

【问题讨论】：

我还有一个问题，在 rn 27.0.2 和 android Marshmallow (6.0.1) - Nexus 5 上没有调用 onActivityResult。

【参考方案1】：

也许晚了，希望对你有帮助。

native 模块的onActivityResult 被ReactContext 调用，ReactInstanceManagerImpl 在 0.29 中被ReactActivity 调用。在上面的示例中，MyWb 扩展了 Activity 而不是 ReactActivity，因此永远不会调用 ReactInstanceManagerImpl。

解决方案只是在您的活动的onActivityResult 调用ReactInstanceManager 的onActivityResult 中，因为您已经拥有自己的 ReactInstanceManager 对象引用。

你启动 React Native 的 Activity 应该有一个这样的覆盖：

// Manually pass along the `onActivityResult` event to React Native event listeners.
// We are not extending from `ReactActivity` so we need to do this manually.
// 
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 

  mReactInstanceManager.onActivityResult( this, requestCode, resultCode, data );

【讨论】：

这就是我需要的！谢谢你。我正在使用 RN 0.33.1。我花了两天的时间才找到这个。

澄清一下，您需要将onActivityResult 放在您要从中启动React Native 的Activity 上并调用mReactInstanceManager.onActivityResult( ... )（或您所称的任何名称）。或者，您可以从 ReactActivity 扩展该 Activity。

这为我节省了数小时令人沮丧的调试时间。非常感谢！

【参考方案2】：

使解决方案完整：

在您的 MainActivity 中（或在 Activity 中，初始化 RN 并使用 mReactInstanceManager 如果它是本机应用程序的一部分）：

...
private ReactInstanceManager mReactInstanceManager;
...
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    super.onActivityResult(requestCode, resultCode, data);

    mReactInstanceManager.onActivityResult(requestCode, resultCode, data);

在您的模块中：

public class MyModule extends ReactContextBaseJavaModule implements ActivityEventListener 
    static final int REQUEST_VIDEO_CAPTURE = 1;

    final ReactApplicationContext reactContext;
    Promise promise;

    public GeneralIntentModule(ReactApplicationContext reactContext) 
        super(reactContext);
        this.reactContext = reactContext;
        this.reactContext.addActivityEventListener(this);
    

    @Override
    public String getName() 
        return "MyModule ";
    

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) 
        this.promise.resolve(data.getDataString());
    

【讨论】：

Np 伴侣，我花了一段时间才弄清楚。 :)

【参考方案3】：

如果有人使用带有 Promise 的 react-native 模块的 kotlin，请参考下面的代码，

import android.app.Activity
import android.content.Intent
import android.util.Log
import com.facebook.react.bridge.*
import com.onboardinglib.HostActivity

class ConsistyOnboarding (reactContext: ReactApplicationContext) :
  ReactContextBaseJavaModule(reactContext) 

  private val CODE = 999
  private var promise: Promise? = null
  private val reContext: ReactApplicationContext? = reactContext

  fun dumpIntent(intent: Intent) 
    LogPrint("Bundle data", "Dumping intent start")

    val bundleData = intent.extras
    if (bundleData != null) 
      for (key in bundleData.keySet()) 
        LogPrint(
          "Bundle data-->",
          key + " : " + if (bundleData[key] != null) bundleData[key] else "NULL"
        )
      
    
  

  override fun getName(): String 
    return "ConsistyOnboarding"
  

  private val mActivityEventListener: ActivityEventListener =
    object : BaseActivityEventListener() 
      override fun onActivityResult(
        activity: Activity,
        requestCode: Int,
        resultCode: Int,
        data: Intent
      ) 
        LogPrint("mActivityEventListener", "Started")

        if (data == null) 
          resolve("01", "No action taken", "0")
          return
        

        dumpIntent(data)

        if (resultCode == Activity.RESULT_OK) 
          try 
            val status = data.getBooleanExtra("status", false)
            val response = data.getIntExtra("response", 0)
            val message = data.getStringExtra("message")
            resolve(status.toString(), response.toString(), message.toString())
            return
           catch (e: Exception) 
            e.printStackTrace()
            resolve("01", "Exception occurred in on-boarding " + e.message, "0")
          
        
        resolve("01", "No action taken", "0")
      
    


  init 
    reContext?.addActivityEventListener(mActivityEventListener)
  


  @ReactMethod
  fun Onboarding(
    partnerId: String, partnerKey: String  prm: Promise
  ) 

    promise = prm
    val currentActivity = currentActivity
    val intent = Intent(currentActivity, HostActivity::class.java)

    intent.putExtra("pId", partnerId) 
    intent.putExtra("ApiKey", partnerKey) 
    
    try 
      currentActivity?.startActivityForResult(intent, CODE)
     catch (e: Exception) 
      e.printStackTrace()
      resolve("01", "No action taken", "0")
    
  

  private fun resolve(
    statusCode: String,
    response: String,
    message: String
  ) 
    if (promise == null) 
      return
    

    val map = Arguments.createMap()

    map.putString("statusCode", statusCode)
    map.putString("response", response)
    map.putString("message", message)

    promise!!.resolve(map)
    promise = null
  

  private fun LogPrint(key: String?, value: String?) 
    if (key == null || value == null) 
      return
    
    Log.i(key, value)
  

主要是需要添加事件监听器，

init 
    reContext?.addActivityEventListener(mActivityEventListener)