Question

我使用ZXing作为图书馆项目为PhoneGap使用Barcode Scanner插件。

我有一个在Galaxy Tab 2（7“）上完美运行的代码。相同的代码在Galaxy S3上不起作用。

问题：当ZXing CaptureActivity扫描条形码时，它只是完成了CaptureActivity，并且调用活动永远不会带有onActivityResult方法。

MainFest。

<activity
        android:name=".activity.MainActivity"
        android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Black.NoTitleBar" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.google.zxing.client.android.CaptureActivity"
        android:configChanges="orientation|keyboardHidden"
        android:screenOrientation="landscape"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
        android:windowSoftInputMode="stateAlwaysHidden" >
        <intent-filter>
            <action android:name="com.phonegap.plugins.barcodescanner.SCAN" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
</application>

MainActivity.java

public void startActivityForResult(CordovaPlugin command, Intent intent,
        int requestCode) {
    this.activityResultCallback = command;
    this.activityResultKeepRunning = this.keepRunning;

    // If multitasking turned on, then disable it for activities that return
    // results
    if (command != null) {
        this.keepRunning = false;
    }

    // Start activity
    startActivityForResult(intent, requestCode);
}

protected void onActivityResult(int requestCode, int resultCode,
        Intent intent) {
    CordovaPlugin callback = this.activityResultCallback;
          if (callback != null) {
              callback.onActivityResult(requestCode, resultCode, intent);
          } else {
              Log.e(TAG, "Plugin callback null");
          }
      // else continue with any other code you need in the method

    super.onActivityResult(requestCode, resultCode, intent);


}

BarcodeScanner插件

private static final String SCAN_INTENT = "com.phonegap.plugins.barcodescanner.SCAN";
public void scan() {

    Intent intentScan = new Intent(SCAN_INTENT);
    intentScan.addCategory(Intent.CATEGORY_DEFAULT);
    this.cordova.startActivityForResult((CordovaPlugin) this, intentScan,
            AppConstants.CAMERA_SCAN_REQUEST_CODE);

}

我将ZXing projet作为图书馆项目。

帮助将不胜感激。

Answer 1

每Cordova web view documentation

您需要在活动中使用此代码：

@Override
public void setActivityResultCallback(CordovaPlugin plugin) {
    this.activityResultCallback = plugin;        
}

public void startActivityForResult(CordovaPlugin command, Intent intent, int requestCode) {
    this.activityResultCallback = command;
    this.activityResultKeepRunning = this.keepRunning;

    // If multitasking turned on, then disable it for activities that return results
    if (command != null) {
        this.keepRunning = false;
    }

    // Start activity
    super.startActivityForResult(intent, requestCode);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    CordovaPlugin callback = this.activityResultCallback;
    if (callback != null) {
        callback.onActivityResult(requestCode, resultCode, intent);
    }
}

以及：

this.cordova.startActivityForResult((CordovaPlugin) this, intentScan, AppConstants.CAMERA_SCAN_REQUEST_CODE);

您需要在插件中使用以下方法：

@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    //do something with the result
    super.onActivityResult(requestCode, resultCode, intent);
}

Answer 2

在调用活动cordova.setActivityResultCallback (this);

之前尝试放置此this.cordova.startActivityForResult((CordovaPlugin) this, intentScan, AppConstants.CAMERA_SCAN_REQUEST_CODE);

Answer 3

在我的cordova插件类中，在调用startActivityForResult方法之前，我将此类设置为结果回调。

cordova.setActivityResultCallback(this);

Answer 4

@aviv给出的答案是绝对正确的，虽然在这种特殊情况下可能没有发生，但重要的是要添加一个细节：

在插件中设置意图的标记时，必须记住将标记设置为FLAG_ACTIVITY_SINGLE_TOP，而不是FLAG_ACTIVITY_NEW_TASK，否则您的setResult（）方法将不会按预期返回。< / p>

另外，请记住确保您的清单声明了launchMode：

android:launchMode="singleTop"

在Android中有一个奇怪的问题，如果你单独运行似乎工作正常，但如果你作为单个实例或单个任务运行，结果将立即返回。

因此，请记住在您要从插件中启动本机图层时添加此内容

Intent i = new Intent(cordova.getActivity(), ThanksActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
cordova.startActivityForResult(this, i, 0);
PluginResult r = new PluginResult(PluginResult.Status.NO_RESULT);
r.setKeepCallback(true);
callbackContext.sendPluginResult(r);

onActivityResult永远不会被称为Phonegap Cordova

4 个答案: