android - 将数据从子活动 onActivityResult() 发送到父活动 onActivityResult()

问题描述

我有一个包含 2 个活动的应用程序。Activity A（父）通过调用启动 Activity B（子）：

startActivityForResult(intentB,B_Request);

活动 B 是条形码扫描仪。（我使用这个库：com.journeyapps:zxing-android-embedded:3.2.0@aar）。在此活动中，我必须重写 onActivityResult() 方法才能获取扫描的代码。之后，我想将存储在“代码”中的数据发送回父（活动 A）onActivityResult（）。我这样做是这样的：

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
        String code = null;

        if(result != null){
            if(result.getContents() == null){
                return;
            }
            else {
                code = result.getContents();
            }
        }
        else {
            super.onActivityResult(requestCode, resultCode, data);
        }

        Intent intent = new Intent(getApplicationContext(),A.class);
        intent.putExtra("scannedCode", code);
        setResult(RESULT_OK, intent);
        finish();
}

父 onActivityResult() 看起来像这样：

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == CAMERA_REQUEST){
            if(resultCode == RESULT_OK){

                String scannedCode = data.getStringExtra("scannedCode");
                toastMessage("Scanned code: " + scannedCode);
            }
        }
    }

我得到以下异常，而不是看到 Activity A，我被重定向到 Activity A 的父级。

E/ActivityManager: Failed to schedule configuration change
    android.os.DeadObjectException
        at android.os.BinderProxy.transactNative(Native Method)
        at android.os.BinderProxy.transact(Binder.java:1177)
        at android.app.IApplicationThread$Stub$Proxy.scheduleTransaction(IApplicationThread.java:1815)
        at android.app.servertransaction.ClientTransaction.schedule(ClientTransaction.java:129)
        at com.android.server.am.ClientLifecycleManager.scheduleTransaction(ClientLifecycleManager.java:47)
        at com.android.server.am.ClientLifecycleManager.scheduleTransaction(ClientLifecycleManager.java:100)
        at com.android.server.am.ActivityManagerService.updateGlobalConfigurationLocked(ActivityManagerService.java:24782)
        at com.android.server.am.ActivityManagerService.updateDisplayOverrideConfigurationLocked(ActivityManagerService.java:24902)
        at com.android.server.am.ActivityManagerService.updateDisplayOverrideConfigurationLocked(ActivityManagerService.java:24879)
        at com.android.server.am.ActivityStackSupervisor.ensureVisibilityAndConfig(ActivityStackSupervisor.java:1671)
        at com.android.server.am.ActivityStackSupervisor.realStartActivityLocked(ActivityStackSupervisor.java:1420)
        at com.android.server.am.ActivityStackSupervisor.startSpecificActivityLocked(ActivityStackSupervisor.java:1709)
        at com.android.server.am.ActivityStack.resumeTopActivityInnerLocked(ActivityStack.java:3043)
        at com.android.server.am.ActivityStack.resumeTopActivityUncheckedLocked(ActivityStack.java:2488)
        at com.android.server.am.ActivityStackSupervisor.resumeFocusedStackTopActivityLocked(ActivityStackSupervisor.java:2234)
        at com.android.server.am.ActivityStack.completePauseLocked(ActivityStack.java:1745)
        at com.android.server.am.ActivityStack.activityPausedLocked(ActivityStack.java:1669)
        at com.android.server.am.ActivityManagerService.activityPaused(ActivityManagerService.java:9657)
        at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:224)
        at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3820)
        at android.os.Binder.execTransact(Binder.java:752)

ps Activity B 中获取代码对我来说是不够的，我需要在 Activity A 中返回代码。

你能告诉我我在这里做错了什么吗？

谢谢！

标签： androidonactivityresult

android - 将数据从子活动 onActivityResult() 发送到父活动 onActivityResult()

问题描述

解决方案

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